EP2701547B1 - Toothbrush with rotatable bristle support - Google Patents

Toothbrush with rotatable bristle support Download PDF

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Publication number
EP2701547B1
EP2701547B1 EP12735773.9A EP12735773A EP2701547B1 EP 2701547 B1 EP2701547 B1 EP 2701547B1 EP 12735773 A EP12735773 A EP 12735773A EP 2701547 B1 EP2701547 B1 EP 2701547B1
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EP
European Patent Office
Prior art keywords
bristle carrier
mount
toothbrush
pin
toothbrush according
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
Application number
EP12735773.9A
Other languages
German (de)
French (fr)
Other versions
EP2701547A2 (en
Inventor
Jürgen Butz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Interbros GmbH
Original Assignee
Interbros GmbH
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Filing date
Publication date
Application filed by Interbros GmbH filed Critical Interbros GmbH
Publication of EP2701547A2 publication Critical patent/EP2701547A2/en
Application granted granted Critical
Publication of EP2701547B1 publication Critical patent/EP2701547B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0062—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being flexible or resilient during use
    • A46B5/0066—Flexible resilience by elastic deformation of the material
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B7/00—Bristle carriers arranged in the brush body
    • A46B7/04—Bristle carriers arranged in the brush body interchangeably removable bristle carriers
    • A46B7/042—Clip or snap connection for bristle carriers
    • 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
    • A46B7/08—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement as a rotating disc
    • 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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/0004—Additional brush head
    • A46B5/0012—Brushes with two or more heads on the same end of a handle for simultaneous use, e.g. cooperating with each-other

Definitions

  • the invention relates to a toothbrush with a brush body having a handle portion and a head portion, wherein in the head portion at least one bristle carrier is rotatably mounted, which carries a bristles, and wherein in the head portion at least one cup-shaped receptacle is formed, in which the bristle carrier is inserted in which a pin is arranged in the receptacle, which supports the bristle carrier and forms its axis of rotation, the pin holding the bristle carrier at a small distance from the receptacle or the head portion, and wherein a pull-out protection is provided, which is a removal of the bristle carrier from the Recording prevented.
  • a structurally simple toothbrush has a usually made of plastic, rod-shaped brush body, at one end of a handle portion is formed. At the opposite end of the handle portion, a head portion is formed on which a bristle in the form of bristle bundles and / or individual bristles is attached.
  • the cleaning effect is only of the type and determines the duration of the movement that a user performs with the bristles on the tooth surface.
  • the WO2006 / 079122 A1 shows a corresponding toothbrush, in which two bristle carriers, each carrying a bristles, are rotatably supported on the head portion of the toothbrush.
  • Each bristle carrier has on its underside a recess in which an undercut is formed.
  • the head portion of the toothbrush has complementary approaches, so that in each case one approach can be inserted into the recess and there securely latched. In this way, it is possible to automatically translate a reciprocating brushing action that is unfavorable to dentistry into a rotary motion that is preferred by dentistry.
  • the US 6,338,176 B1 shows a toothbrush with two axially successively arranged bristle carriers, which are each rotatably mounted on the head portion.
  • the head portion on two cup-shaped receptacles, each having a bristle carrier is completely inserted.
  • the bristle carrier sits on a mushroom-like pin, which sits with its lower end in a through hole at the bottom of the receptacle and engages with its upper mushroom-like end in a correspondingly complementary recess formed on the underside of the bristle carrier.
  • DE-A-197 45 876 describes a toothbrush with a brush body having a handle portion and a head portion.
  • a bristle carrier is rotatably mounted, which carries a bristles.
  • at least one cup-shaped receptacle is further formed, in which the bristle carrier is inserted.
  • a pin is arranged, which supports the bristle carrier and forms its axis of rotation. The pin holds the bristle carrier at a small distance from the receptacle or the head section.
  • the pin is cylindrical and is seated with its one end in a blind hole-shaped receiving hole formed in the cup-shaped receptacle, and with its other end in a blind-hole-shaped receiving hole formed in the bristle carrier.
  • An extract safety is provided which prevents removal of the bristle carrier from the receptacle.
  • the pull-out protection is designed as a pin which is perpendicular to the pin, which forms the axis of rotation, and is fixedly secured at one end to the head portion and engages with the other end in an at least partially circumferential groove in the bristle carrier.
  • the invention has for its object to provide a toothbrush of the type mentioned, in which excessive wear of the components is avoided in the rotation of the bristle carrier and in which the pin is securely positioned.
  • a toothbrush with the features of claim 1. It is also provided that in the head portion of Brush body is formed at least one cup-shaped receptacle, in which the bristle carrier is inserted, that in the receptacle a preferably made of metal or plastic existing pin is arranged, which supports the bristle carrier and forms its axis of rotation, wherein the pin the bristle carrier at a small distance from the receptacle or holding the head portion, and that a pull-out protection is provided which prevents removal of the bristle carrier from the receptacle.
  • the extract safety device comprises at least a first engagement part, which is formed on the bristle carrier, and at least one second engagement part, which is formed on the head part.
  • the engagement parts are positively engageable with each other.
  • the first engagement part is formed by a completely circumferential, radially protruding shoulder of the bristle carrier, and there are provided a plurality of circumferentially distributed second engagement parts.
  • the functions of "rotary storage” and “pull-out protection” are separated.
  • the pivotal mounting of the bristle carrier relative to the head portion of the brush body is achieved by the pin.
  • the pin may be held either in the bristle carrier or in the head portion of the brush body and the respective other component is loosely mounted rotatably on the pin.
  • the pin is designed as a separate component. In this case, the pin is dimensioned so that the bristle carrier is disposed in the unused state of the toothbrush at a small distance from the receptacle or the head portion of the brush body, that is not in direct contact with this.
  • the pin is cylindrical and in particular circular cylindrical in shape and is seated with its one end in a blind hole-shaped receiving hole, which is formed in the cup-shaped receptacle, and with its other end in a further blind hole-shaped receiving hole, which is formed in the bristle carrier.
  • the pin is safe in the axial direction positioned and between the pin and the bristle carrier or between the pin and the receptacle is given only a relatively small contact surface, whereby a material wear due to frictional forces is kept low.
  • the bristle carrier can rotate freely about the axis of rotation defined by the pin without coming into contact with the head portion of the brush body. In this way, friction forces are avoided, so that these components are subject to a much lower wear and the release of plastic particles is avoided. Due to the distance between the bristle carrier and the head portion of the brush body, these areas can be cleaned or rinsed by the user in a simple manner.
  • the pull-out guard prevents the bristle carrier from disengaging from the pin in use, and this pull-out safeguard only needs to be effective when a pull-out force is applied to the bristle body that does not or rarely occurs during normal use of the toothbrush.
  • a hub part is formed that has the receiving hole for the pin.
  • the pin is held tilt-proof in this way in the receiving hole, wherein it can either be set in the receiving hole or rotatably inserted into this.
  • the bristle carrier is preferably dish-shaped and has a lower-side approach, with which it engages in the receptacle. It can be provided that the bristle carrier, the recording on the upper side in particular completely covers and engages only with the approach in the recording. In this way, the entry of dirt particles into the receptacle can be avoided or at least reduced.
  • the receiving hole for the pin is formed in the bristle carrier on the underside.
  • the pull-out safety device should ensure that the bristle carrier can not come loose from the brush body or the holder during operation of the toothbrush. This danger exists in particular if the user applies eccentric forces to the bristle carrier and thus deforms the bristle carrier.
  • the safety catch comprises at least a first engagement part, which is formed on the bristle carrier, and at least one second engagement part, which is formed on the head part, wherein the engagement parts are positively engageable with each other.
  • the engagement parts can be locked together during assembly of the toothbrush by the bristle carrier is pressed from above into the receptacle.
  • the first engaging part is formed by a completely circumferential, radially protruding shoulder of the bristle carrier, while the second engaging part is formed by at least a plurality of hooks formed on the head.
  • the second engaging part is formed by at least a plurality of hooks formed on the head.
  • 2 to 5 on the Circumference distributed arranged second engaging parts or hooks may be provided.
  • the toothbrush can be configured with a single rotatable bristle carrier and thus a receptacle, but it is also possible to arrange at least two receptacles lying one behind the other in the longitudinal direction of the toothbrush and rotatably insert a bristle carrier into each receptacle. It has proven to be advantageous if the axes of rotation of the bristle carrier are aligned inclined to opposite sides of a longitudinal axis of the toothbrush. The bristle carrier thus do not rotate about parallel axes of rotation, but the axes of rotation extend at an angle of 10 ° to 30 ° to each other. Accordingly, the shots for the bristle carrier are inclined relative to each other and have to Chryslergesestzten sides of the longitudinal axis of the toothbrush.
  • the at least two receptacles for each bristle carrier lie one behind the other in the longitudinal direction of the toothbrush, ie, a receptacle facing away from the handle section of the toothbrush and a receptacle facing the handle section of the toothbrush are provided.
  • the two receptacles are connected to each other by means of a web of the head portion, wherein the web can be dimensioned so that the receptacle facing away from the handle portion facing relative to the handle portion Recording is pivotable by the web is elastically deformed.
  • the pivotability of the front, the handle portion facing away from the receptacle relative to the inner, the handle portion facing receiving is determined by the material of the head portion and the dimensions of the web, as this acts as a spring.
  • the web can be provided with a sheath, which preferably consists of a soft elastomeric plastic.
  • a toothbrush 10 comprises in the usual way a brush body 11 made of plastic, which has a rear grip portion 12 and a front head portion 13.
  • a brush body 11 made of plastic, which has a rear grip portion 12 and a front head portion 13.
  • two plate-shaped bristle carrier 14 are rotatably mounted, each carrying a bristles 15.
  • each bristle carrier 14 has on its upper side a plurality of holes 18, in each of which a bristle bundle 25 is inserted.
  • the bristle bundles 25 and / or individual bristles not shown form the bristles 15.
  • the bristle carrier 14 On its underside, the bristle carrier 14 has a rotationally symmetrical projection 19 which has at its lower end a completely circumferential, radially outwardly projecting shoulder 20 (see FIGS. 3 and 4 ).
  • an axial receiving hole 22 is formed in the form of a blind hole.
  • the brush body 11 has in its head portion 13 in the longitudinal direction of the toothbrush one behind the other lying cup-shaped receptacles 16, which at its bottom in each case three distributed over the circumference arranged drain holes 23 (see FIG. 5 ).
  • upwardly projecting hooks 21 are formed, which form a second engagement part and with the Shoulder 20 of the bristle carrier 14 can engage in positive engagement.
  • an upwardly extending hub portion 27 In the middle of the cup-shaped receptacle 16 at the bottom of an upwardly extending hub portion 27 is formed, which has a blind hole-shaped receiving hole 24.
  • a cylindrical and in particular circular cylindrical pin 17 made of metal or plastic is used, which protrudes from the hub portion 27 upwards so that the protruding portion of the pin 17 can be inserted into the receiving hole 22 at the bottom of the bristle carrier 14.
  • FIG. 6 shows a section through the head portion of the toothbrush in the assembled state.
  • the pin 17 is inserted into the receiving hole 24 of the hub portion 27 and held there against rotation.
  • the bristle carrier 24 carrying the bristle bundles 25 is placed with its lower receiving hole on the upper, protruding end of the pin 17 and held rotatably on this.
  • the bristle carrier 14 is held in the receptacle 16 by a safety catch 26 which is formed by the hooks 21 at the bottom of the receptacle 16 and the peripheral shoulder 20 at the lower end of the bristle carrier 14.
  • a safety catch 26 which is formed by the hooks 21 at the bottom of the receptacle 16 and the peripheral shoulder 20 at the lower end of the bristle carrier 14.
  • FIG. 6 shows, engages the shoulder 20 of the bristle carrier 14 in the mounted state, the hooks 21 of the receptacle 16, of which in FIG. 6 only one hook 21 is visible.
  • the bristle carrier 14 in the assembled, unused state according to FIG. 6 alone on pin 17 am Head part 13 is supported, that is held in this state at a small distance from the surface of the receptacle 16 and the head portion 13. This ensures a smooth rotation of the bristle carrier 14 and prevents excessive friction between superimposed plastic parts while accurate and secure positioning of the pin 17th
  • the bristle carrier 14 is plate-shaped in its upper portion, wherein on the underside of the plate-shaped portion of the projection 19 is formed.
  • the dish-shaped region and the projection 19 are dimensioned such that the outer dimensions of the dish-shaped region are larger than the inner dimensions of the receptacle 16, so that the plate-shaped region is arranged above the upper access opening of the receptacle 16 and covers it (see FIG. 6 ), wherein the bristle carrier 14 engages only with the projection 19 in the receptacle 16.
  • FIG. 7 shows, the axes of rotation D1 and D2, about which the bristle carrier 14 are rotatable, not parallel to each other, but have an angular offset of 10 ° to 30 ° to each other.
  • the axes of rotation D1 and D2 of the bristle carrier 14 are aligned inclined to opposite sides of a longitudinal axis L of the toothbrush 10.
  • the two in the longitudinal direction of the toothbrush 10 successive receptacles 16 are according to FIG. 8 connected by a web 28 of the head portion 13 with each other.
  • the web 28 is dimensioned such that the handle portion remote from the front, according FIG. 8 left receptacle 16 relative to the handle portion facing, according to FIG. 8 right recording is pivotally, as indicated by the double arrow S and a dashed contour line.
  • the spring effect of the web can be adjusted by its material and dimensions.
  • the web 28 is provided with a sheath 29 made of an elastomeric plastic.

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Description

Die Erfindung betrifft eine Zahnbürste mit einem Bürstenkörper, der einen Griffabschnitt und einen Kopfabschnitt aufweist, wobei im Kopfabschnitt zumindest ein Borstenträger drehbar gelagert ist, der eine Beborstung trägt, und wobei in dem Kopfabschnitt zumindest eine napfförmige Aufnahme ausgebildet ist, in die der Borstenträger eingesetzt ist, wobei in der Aufnahme ein Stift angeordnet ist, der den Borstenträger lagert und dessen Drehachse bildet, wobei der Stift den Borstenträger in geringem Abstand von der Aufnahme bzw. dem Kopfabschnitt hält, und wobei eine Auszugssicherung vorgesehen ist, die ein Entfernen des Borstenträgers aus der Aufnahme verhindert.The invention relates to a toothbrush with a brush body having a handle portion and a head portion, wherein in the head portion at least one bristle carrier is rotatably mounted, which carries a bristles, and wherein in the head portion at least one cup-shaped receptacle is formed, in which the bristle carrier is inserted in which a pin is arranged in the receptacle, which supports the bristle carrier and forms its axis of rotation, the pin holding the bristle carrier at a small distance from the receptacle or the head portion, and wherein a pull-out protection is provided, which is a removal of the bristle carrier from the Recording prevented.

Eine konstruktiv einfach aufgebaute Zahnbürste besitzt einen üblicherweise aus Kunststoff bestehenden, stabförmigen Bürstenkörper, an dessen einem Ende ein Griffabschnitt ausgebildet ist. An dem dem Griffabschnitt entgegengesetzten Ende ist ein Kopfabschnitt ausgebildet, an dem eine Beborstung in Form von Borstenbündeln und/oder Einzelborsten befestigt ist. Bei einer derartigen Zahnbürste wird die Reinigungswirkung allein von der Art und der Dauer der Bewegung bestimmt, die ein Benutzer mit der Beborstung auf der Zahnoberfläche ausführt.A structurally simple toothbrush has a usually made of plastic, rod-shaped brush body, at one end of a handle portion is formed. At the opposite end of the handle portion, a head portion is formed on which a bristle in the form of bristle bundles and / or individual bristles is attached. In such a toothbrush, the cleaning effect is only of the type and determines the duration of the movement that a user performs with the bristles on the tooth surface.

Seit langem ist versucht worden, die Reinigungswirkung zu erhöhen, indem die Beborstung nicht direkt am Kopfabschnitt, sondern an einem Borstenträger angebracht wird, der drehbar am Kopfabschnitt gelagert ist. Die WO2006/079122 A1 zeigt eine entsprechende Zahnbürste, bei der zwei Borstenträger, die jeweils eine Beborstung tragen, an dem Kopfabschnitt der Zahnbürste drehbar gehalten sind. Jeder Borstenträger weist auf seiner Unterseite eine Ausnehmung auf, in der eine Hinterschneidung ausgebildet ist. Der Kopfabschnitt der Zahnbürste besitzt komplementäre Ansätze, so dass jeweils ein Ansatz in die Ausnehmung eingeführt und dort auszugssicher verrastet werden kann. Auf diese Weise ist es möglich, eine hin und hergerichtete Putzbewegung, die gemäß der Zahnmedizin unvorteilhaft ist, selbsttätig in eine Drehbewegung umzusetzen, die von der Zahnmedizin bevorzugt wird.Attempts have been made for a long time to increase the cleaning effect by attaching the bristles not directly to the head section but to a bristle carrier rotatably mounted on the head section. The WO2006 / 079122 A1 shows a corresponding toothbrush, in which two bristle carriers, each carrying a bristles, are rotatably supported on the head portion of the toothbrush. Each bristle carrier has on its underside a recess in which an undercut is formed. The head portion of the toothbrush has complementary approaches, so that in each case one approach can be inserted into the recess and there securely latched. In this way, it is possible to automatically translate a reciprocating brushing action that is unfavorable to dentistry into a rotary motion that is preferred by dentistry.

Nachteilig bei dieser konstruktiven Ausgestaltung ist einerseits, dass die engen Zwischenräume zwischen dem Kopfabschnitt des Bürstenkörpers und dem Borstenträger leicht verschmutzen können, wodurch die Drehbarkeit des Borstenträgers behindert oder sogar unmöglich ist. Darüber hinaus steht der Borstenträger über eine relativ große Fläche mit dem Kopfabschnitt des Bürstenkörpers in Kontakt. Wenn der Borstenträger gedreht wird, treten zwischen dem Borstenträger und dem Bürstenkörper, die beide üblicherweise aus Kunststoff bestehen, Reibungskräfte auf, die zu einer Abnutzung der Bauteile führen und feinste Kunststoffpartikel freisetzen, die in den Körper des Benutzers gelangen können.A disadvantage of this constructive configuration on the one hand, that the narrow spaces between the head portion of the brush body and the bristle carrier can easily become dirty, whereby the rotation of the bristle carrier is hindered or even impossible. In addition, the bristle carrier is in contact over a relatively large area with the head portion of the brush body. When the bristle carrier is rotated, between the bristle carrier and the brush body, both of which are usually made of plastic, frictional forces occur, which lead to wear of the components and release the finest plastic particles that can enter the user's body.

Auch die US 6,338,176 B1 , zeigt eine Zahnbürste mit zwei axial hintereinander angeordneten Borstenträgern, die jeweils drehbar am Kopfabschnitt gelagert sind. Zu diesem Zweck weist der Kopfabschnitt zwei napfförmige Aufnahmen auf, die jeweils ein Borstenträger vollständig eingesetzt ist. Der Borstenträger sitzt auf einem pilzkopfartigen Stift, der mit seinem unteren Ende in einer Durchgangsbohrung am Boden der Aufnahme sitzt und mit seinem oberen pilzkopfartigen Ende in eine entsprechend komplementär ausgebildete Ausnehmung auf der Unterseite des Borstenträgers eingreift. Aufgrund der Form des Stiftes ist eine große Auflagefläche zwischen dem Borstenträger und dem Stift gegeben, was zu einer schwergängigen Drehung des Borstenträgers und auch in oben genannter Weise zu einer Abnutzung der Bauteile führt, insbesondere wenn Schmutzteilchen infolge längerer Benutzung in die Aufnahme eindringen. Darüber hinaus ist die axiale Fixierung des Stiftes ungenügend, da bei Aufbringen einer großen Druckkraft auf den Borstenträger die Gefahr besteht, dass der Stift axial verschoben wird, wodurch der Borstenträger nicht mehr drehbar ist.Also the US 6,338,176 B1 shows a toothbrush with two axially successively arranged bristle carriers, which are each rotatably mounted on the head portion. For this purpose, the head portion on two cup-shaped receptacles, each having a bristle carrier is completely inserted. The bristle carrier sits on a mushroom-like pin, which sits with its lower end in a through hole at the bottom of the receptacle and engages with its upper mushroom-like end in a correspondingly complementary recess formed on the underside of the bristle carrier. Due to the shape of the pin a large contact surface between the bristle carrier and the pin is given, resulting in a stiff rotation of the bristle carrier and also in the above manner to wear of the components, especially when dirt particles penetrate due to prolonged use in the recording. In addition, the axial fixation of the pin is insufficient, since upon application of a large pressure force on the bristle carrier there is a risk that the pin is displaced axially, whereby the bristle carrier is no longer rotatable.

DE-A-197 45 876 beschreibt eine Zahnbürste mit einem Bürstenkörper, der einen Griffabschnitt und einen Kopfabschnitt aufweist. Im Kopfabschnitt ist zumindest ein Borstenträger drehbar gelagert, der eine Beborstung trägt. Im Kopfabschnitt ist ferner zumindest eine napfförmige Aufnahme ausgebildet, in die der Borstenträger eingesetzt ist. In der Aufnahme ist ein Stift angeordnet, der den Borstenträger lagert und dessen Drehachse bildet. Der Stift hält den Borstenträger in geringem Abstand von der Aufnahme bzw. dem Kopfabschnitt. Der Stift ist zylinderförmig ausgebildet und sitzt mit seinem einen Ende in einem sacklochförmigen Aufnahmeloch, das in der napfförmigen Aufnahme ausgebildet ist, und mit seinem anderen Ende in einem sacklochförmigen Aufnahmeloch, das in dem Borstenträger ausgebildet ist. Eine Auszugssicherung ist vorgesehen, die ein Entfernen des Borstenträgers aus der Aufnahme verhindert. Die Auszugssicherung ist als Stift ausgebildet, der senkrecht zum Stift steht, der die Drehachse bildet, und mit einem Ende fest am Kopfabschnitt befestigt ist und mit dem anderen Ende in eine zumindest teilweise umlaufende Nut im Borstenträger eingreift. DE-A-197 45 876 describes a toothbrush with a brush body having a handle portion and a head portion. In the head section, at least one bristle carrier is rotatably mounted, which carries a bristles. In the head portion, at least one cup-shaped receptacle is further formed, in which the bristle carrier is inserted. In the receptacle, a pin is arranged, which supports the bristle carrier and forms its axis of rotation. The pin holds the bristle carrier at a small distance from the receptacle or the head section. The pin is cylindrical and is seated with its one end in a blind hole-shaped receiving hole formed in the cup-shaped receptacle, and with its other end in a blind-hole-shaped receiving hole formed in the bristle carrier. An extract safety is provided which prevents removal of the bristle carrier from the receptacle. The pull-out protection is designed as a pin which is perpendicular to the pin, which forms the axis of rotation, and is fixedly secured at one end to the head portion and engages with the other end in an at least partially circumferential groove in the bristle carrier.

Der Erfindung liegt die Aufgabe zugrunde, eine Zahnbürste der genannten Art zu schaffen, bei der eine übermäßige Abnutzung der Bauteile bei der Drehung des Borstenträgers vermieden ist und bei der der Stift sicher positioniert ist.The invention has for its object to provide a toothbrush of the type mentioned, in which excessive wear of the components is avoided in the rotation of the bristle carrier and in which the pin is securely positioned.

Diese Aufgabe wird erfindungsgemäß durch eine Zahnbürste mit den Merkmalen des Anspruchs 1 gelöst. Dabei ist ebenfalls vorgesehen, dass in dem Kopfabschnitt des Bürstenkörpers zumindest eine napfförmige Aufnahme ausgebildet ist, in die der Borstenträger eingesetzt ist, dass in der Aufnahme ein vorzugsweise aus Metall oder Kunststoff bestehender Stift angeordnet ist, der den Borstenträger lagert und dessen Drehachse bildet, wobei der Stift den Borstenträger in geringem Abstand von der Aufnahme bzw. dem Kopfabschnitt hält, und dass eine Auszugssicherung vorgesehen ist, die ein Entfernen des Borstenträgers aus der Aufnahme verhindert.This object is achieved by a toothbrush with the features of claim 1. It is also provided that in the head portion of Brush body is formed at least one cup-shaped receptacle, in which the bristle carrier is inserted, that in the receptacle a preferably made of metal or plastic existing pin is arranged, which supports the bristle carrier and forms its axis of rotation, wherein the pin the bristle carrier at a small distance from the receptacle or holding the head portion, and that a pull-out protection is provided which prevents removal of the bristle carrier from the receptacle.

Die Auszugssicherung umfasst zumindest ein erstes Eingriffsteil, das am Borstenträger ausgebildet ist, und zumindest ein zweites Eingriffsteil, das an dem Kopfteil ausgebildet ist. Die Eingriffsteile sind formschlüssig miteinander in Eingriff bringbar. Erfindungsgemäß ist das erste Eingriffsteil von einer vollständig umlaufenden, radial hervorstehenden Schulter des Borstenträgers gebildet, und es sind mehrere, über den Umfang verteilt angeordnete zweite Eingriffsteile vorgesehen.The extract safety device comprises at least a first engagement part, which is formed on the bristle carrier, and at least one second engagement part, which is formed on the head part. The engagement parts are positively engageable with each other. According to the invention, the first engagement part is formed by a completely circumferential, radially protruding shoulder of the bristle carrier, and there are provided a plurality of circumferentially distributed second engagement parts.

Somit sind bei einer Zahnbürste mit einem drehbaren Borstenträger die Funktionen "Drehlagerung" und "Auszugssicherung" voneinander getrennt. Die Drehlagerung des Borstenträgers relativ zu dem Kopfabschnitt des Bürstenkörpers wird durch den Stift erreicht. Der Stift kann entweder in dem Borstenträger oder in dem Kopfabschnitt des Bürstenkörpers gehalten sein und das jeweils andere Bauteil ist lose drehbar auf den Stift aufgesetzt. Der Stift ist als separates Bauteil ausgebildet. Dabei ist der Stift so bemessen, dass der Borstenträger im unbenutzten Zustand der Zahnbürste in einem geringen Abstand von der Aufnahme bzw. dem Kopfabschnitt des Bürstenkörpers angeordnet ist, d.h. mit diesem nicht in unmittelbarem Kontakt steht. Der Stift ist zylinderförmig und insbesondere kreiszylinderförmig ausgebildet und sitzt mit seinem einen Ende in einem sacklochförmigen Aufnahmeloch, das in der napfförmigen Aufnahme ausgebildet ist, und mit seinem anderen Ende in einem weiteren sacklochförmigen Aufnahmeloch, das in dem Borstenträger ausgebildet ist. Auf diese Weise ist der Stift in axialer Richtung sicher positioniert und zwischen dem Stift und dem Borstenträger bzw. zwischen dem Stift und der Aufnahme ist nur eine relativ geringe Kontaktfläche gegeben, wodurch eine Materialabnutzung infolge von Reibungskräften gering gehalten ist. Der Borstenträger kann um die von dem Stift definierte Drehachse frei drehen, ohne mit dem Kopfabschnitt des Bürstenkörpers in Kontakt zu kommen. Auf diese Weise sind Reibungskräfte vermieden, so dass diese Bauteile einer wesentlich geringeren Abnutzung unterliegen und auch das Freisetzen von Kunststoffpartikeln vermieden ist. Aufgrund des Abstandes zwischen dem Borstenträger und dem Kopfabschnitt des Bürstenkörpers lassen sich diese Bereiche vom Benutzer in einfacher Weise reinigen bzw. ausspülen.Thus, in a toothbrush with a rotatable bristle carrier, the functions of "rotary storage" and "pull-out protection" are separated. The pivotal mounting of the bristle carrier relative to the head portion of the brush body is achieved by the pin. The pin may be held either in the bristle carrier or in the head portion of the brush body and the respective other component is loosely mounted rotatably on the pin. The pin is designed as a separate component. In this case, the pin is dimensioned so that the bristle carrier is disposed in the unused state of the toothbrush at a small distance from the receptacle or the head portion of the brush body, that is not in direct contact with this. The pin is cylindrical and in particular circular cylindrical in shape and is seated with its one end in a blind hole-shaped receiving hole, which is formed in the cup-shaped receptacle, and with its other end in a further blind hole-shaped receiving hole, which is formed in the bristle carrier. In this way, the pin is safe in the axial direction positioned and between the pin and the bristle carrier or between the pin and the receptacle is given only a relatively small contact surface, whereby a material wear due to frictional forces is kept low. The bristle carrier can rotate freely about the axis of rotation defined by the pin without coming into contact with the head portion of the brush body. In this way, friction forces are avoided, so that these components are subject to a much lower wear and the release of plastic particles is avoided. Due to the distance between the bristle carrier and the head portion of the brush body, these areas can be cleaned or rinsed by the user in a simple manner.

Die Auszugssicherung verhindert, dass sich der Borstenträger bei Gebrauch von dem Stift lösen kann, wobei diese Auszugssicherung nur dann wirksam werden muss, wenn auf dem Borstenkörper eine Auszugskraft wirkt, die bei normalem Gebrauch der Zahnbürste nicht oder nur selten auftritt.The pull-out guard prevents the bristle carrier from disengaging from the pin in use, and this pull-out safeguard only needs to be effective when a pull-out force is applied to the bristle body that does not or rarely occurs during normal use of the toothbrush.

In bevorzugter Ausgestaltung der Erfindung ist vorgesehen, dass in der napfförmigen Aufnahme ein Nabenteil ausgebildet ist, dass das Aufnahmeloch für den Stift aufweist. Der Stift ist auf diese Weise in dem Aufnahmeloch kippsicher gehalten, wobei er entweder in dem Aufnahmeloch festgelegt oder drehbar in dieses eingesetzt sein kann.In a preferred embodiment of the invention it is provided that in the cup-shaped receptacle, a hub part is formed that has the receiving hole for the pin. The pin is held tilt-proof in this way in the receiving hole, wherein it can either be set in the receiving hole or rotatably inserted into this.

Der Borstenträger ist vorzugsweise tellerförmig ausgebildet und besitzt einen unterseitigen Ansatz, mit dem er in die Aufnahme eingreift. Dabei kann vorgesehen sein, dass der Borstenträger die Aufnahme oberseitig insbesondere vollständig abdeckt und nur mit dem Ansatz in die Aufnahme eingreift. Auf diese Weise kann das Eintreten von Schmutzpartikeln in die Aufnahme vermieden oder zumindest vermindert werden.The bristle carrier is preferably dish-shaped and has a lower-side approach, with which it engages in the receptacle. It can be provided that the bristle carrier, the recording on the upper side in particular completely covers and engages only with the approach in the recording. In this way, the entry of dirt particles into the receptacle can be avoided or at least reduced.

Zur Lagerung des Stiftes kann vorgesehen sein, dass das Aufnahmeloch für den Stift, in dem der Stift sicher gehalten und gegebenenfalls befestigt ist, in dem Borstenträger auf dessen Unterseite ausgebildet ist.For supporting the pin can be provided that the receiving hole for the pin, in which the pin is held securely and optionally secured, is formed in the bristle carrier on the underside.

Die Auszugssicherung soll sicherstellen, dass der Borstenträger sich bei Betrieb der Zahnbürste nicht vom Bürstenkörper bzw. aus der Aufnahme lösen kann. Diese Gefahr besteht insbesondere, wenn der Benutzer auf den Borstenträger außermittige Kräfte aufbringt und somit den Borstenträger verformt.The pull-out safety device should ensure that the bristle carrier can not come loose from the brush body or the holder during operation of the toothbrush. This danger exists in particular if the user applies eccentric forces to the bristle carrier and thus deforms the bristle carrier.

Gemäß der Erfindung ist vorgesehen, dass die Auszugssicherung zumindest ein erstes Eingriffsteil, das am Borstenträger ausgebildet ist, und zumindest ein zweites Eingriffsteil umfasst, das am Kopfteil ausgebildet ist, wobei die Eingriffsteile formschlüssig miteinander in Eingriff bringbar sind. Insbesondere können die Eingriffsteile bei Montage der Zahnbürste miteinander verrastet werden, indem der Borstenträger von oben in die Aufnahme hineingedrückt wird.According to the invention, it is provided that the safety catch comprises at least a first engagement part, which is formed on the bristle carrier, and at least one second engagement part, which is formed on the head part, wherein the engagement parts are positively engageable with each other. In particular, the engagement parts can be locked together during assembly of the toothbrush by the bristle carrier is pressed from above into the receptacle.

Das erste Eingriffsteil ist von einer vollständig umlaufenden, radial hervorstehenden Schulter des Borstenträgers gebildet, während das zweite Eingriffsteil von zumindest mehreren am Kopf ausgebildeten Haken gebildet ist. Insbesondere können beispielsweise 2 bis 5 über den Umfang verteilt angeordnete zweite Eingriffsteile bzw. Haken vorgesehen sein.The first engaging part is formed by a completely circumferential, radially protruding shoulder of the bristle carrier, while the second engaging part is formed by at least a plurality of hooks formed on the head. In particular, for example, 2 to 5 on the Circumference distributed arranged second engaging parts or hooks may be provided.

Die Zahnbürste kann mit einem einzelnen rotierbaren Borstenträger und somit einer Aufnahme ausgestaltet sein, es ist jedoch auch möglich, zumindest zwei Aufnahmen in Längsrichtung der Zahnbürste hintereinander liegend anzuordnen und in jede Aufnahme einen Borstenträger drehbar einzusetzen. Dabei hat es sich als vorteilhaft erwiesen, wenn die Drehachsen der Borstenträger zu entgegengesetzten Seiten einer Längsachse der Zahnbürste geneigt ausgerichtet sind. Die Borstenträger drehen somit nicht um parallel verlaufende Drehachsen, sondern die Drehachsen verlaufen zueinander in einem Winkel von 10° bis 30°. Entsprechend sind auch die Aufnahmen für die Borstenträger relativ zueinander geneigt und weisen zu entgegengesestzten Seiten der Längsachse der Zahnbürste.The toothbrush can be configured with a single rotatable bristle carrier and thus a receptacle, but it is also possible to arrange at least two receptacles lying one behind the other in the longitudinal direction of the toothbrush and rotatably insert a bristle carrier into each receptacle. It has proven to be advantageous if the axes of rotation of the bristle carrier are aligned inclined to opposite sides of a longitudinal axis of the toothbrush. The bristle carrier thus do not rotate about parallel axes of rotation, but the axes of rotation extend at an angle of 10 ° to 30 ° to each other. Accordingly, the shots for the bristle carrier are inclined relative to each other and have to entgegengesestzten sides of the longitudinal axis of the toothbrush.

Die zumindest zwei Aufnahmen für jeweils einen Borstenträger liegen in Längsrichtung der Zahnbürste hintereinander, d.h. es ist eine dem Griffabschnitt der Zahnbürste abgewandte Aufnahme und eine dem Griffabschnitt der Zahnbürste zugewandte Aufnahme vorgesehen. Vorzugsweise sind die beiden Aufnahmen mittels eines Steges des Kopfabschnittes miteinander verbunden, wobei der Steg so bemessen sein kann, dass die dem Griffabschnitt abgewandte Aufnahme relativ zu der dem Griffabschnitt zugewandten Aufnahme schwenkbar ist, indem der Steg elastisch verformt wird. Die Schwenkbarkeit der vorderen, dem Griffabschnitt abgewandten Aufnahme relativ zu der inneren, dem Griffabschnitt zugewandten Aufnahme wird durch das Material des Kopfabschnittes sowie die Abmessungen des Steges bestimmt, da dieser als Feder wirkt. Zum Schutze des Steges und um ein bestimmtes Verformungsverhalten zu erzielen, kann der Steg mit einer Ummantelung versehen sein, die vorzugsweise aus einem weichen elastomeren Kunststoff besteht.The at least two receptacles for each bristle carrier lie one behind the other in the longitudinal direction of the toothbrush, ie, a receptacle facing away from the handle section of the toothbrush and a receptacle facing the handle section of the toothbrush are provided. Preferably, the two receptacles are connected to each other by means of a web of the head portion, wherein the web can be dimensioned so that the receptacle facing away from the handle portion facing relative to the handle portion Recording is pivotable by the web is elastically deformed. The pivotability of the front, the handle portion facing away from the receptacle relative to the inner, the handle portion facing receiving is determined by the material of the head portion and the dimensions of the web, as this acts as a spring. To protect the web and to achieve a certain deformation behavior, the web can be provided with a sheath, which preferably consists of a soft elastomeric plastic.

Weitere Einzelheiten und Merkmale der Erfindung sind aus der folgenden Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung ersichtlich. Es zeigen:

Fig. 1
eine perspektivische Ansicht einer erfindungsgemäßen Zahnbürste,
Fig. 2
die Bauteile des Kopfabschnitts der Zahnbürste im auseinandergezogenen Zustand,
Fig. 3
eine Seitenansicht eines Borstenträgers,
Fig. 4
eine Unteransicht des Borstenträgers gemäß Figur 3,
Fig. 5
eine Aufsicht auf den Kopfabschnitt der Zahnbürste ohne Borstenträger,
Fig. 6
einen Schnitt durch den Kopfabschnitt und den Borstenträger der Zahnbürste,
Fig. 7
eine perspektivische Aufsicht auf den Kopfabschnitt der Zahnbürste und
Fig. 8
einen Längsschnitt durch den Bürstenkörper im Kopfabschnitt.
Further details and features of the invention will become apparent from the following description of embodiments with reference to the drawings. Show it:
Fig. 1
a perspective view of a toothbrush according to the invention,
Fig. 2
the components of the head portion of the toothbrush in the exploded state,
Fig. 3
a side view of a bristle carrier,
Fig. 4
a bottom view of the bristle carrier according to FIG. 3 .
Fig. 5
a view of the head portion of the toothbrush without bristle carrier,
Fig. 6
a section through the head portion and the bristle carrier of the toothbrush,
Fig. 7
a perspective view of the head portion of the toothbrush and
Fig. 8
a longitudinal section through the brush body in the head section.

Eine erfindungsgemäße Zahnbürste 10 umfasst in üblicher Weise einen aus Kunststoff bestehenden Bürstenkörper 11, der einen hinteren Griffabschnitt 12 und einen vorderen Kopfabschnitt 13 aufweist. Im Kopfabschnitt 13 sind zwei tellerförmige Borstenträger 14 drehbar gelagert, die jeweils eine Beborstung 15 tragen.A toothbrush 10 according to the invention comprises in the usual way a brush body 11 made of plastic, which has a rear grip portion 12 and a front head portion 13. In the head portion 13, two plate-shaped bristle carrier 14 are rotatably mounted, each carrying a bristles 15.

Wie Figur 2 zeigt, besitzt jeder Borstenträger 14 auf seiner Oberseite eine Vielzahl von Löchern 18, in die jeweils ein Borstenbündel 25 eingesetzt ist. Die Borstenbündel 25 und/oder nicht dargestellte Einzelborsten bilden die Beborstung 15. Auf seiner Unterseite besitzt der Borstenträger 14 einen rotationssymmetrischen Ansatz 19, der an seinem unteren Ende eine vollständig umlaufende, radial nach außen hervorstehende Schulter 20 besitzt (siehe Figuren 3 und 4). Auf der Unterseite des Borstenträgers 14 ist ein axiales Aufnahmeloch 22 in Form eines Sacklochs ausgebildet.As FIG. 2 shows, each bristle carrier 14 has on its upper side a plurality of holes 18, in each of which a bristle bundle 25 is inserted. The bristle bundles 25 and / or individual bristles not shown form the bristles 15. On its underside, the bristle carrier 14 has a rotationally symmetrical projection 19 which has at its lower end a completely circumferential, radially outwardly projecting shoulder 20 (see FIGS. 3 and 4 ). On the underside of the bristle carrier 14, an axial receiving hole 22 is formed in the form of a blind hole.

Der Bürstenkörper 11 besitzt in seinem Kopfabschnitt 13 zwei in Längsrichtung der Zahnbürste hintereinander liegende napfförmige Aufnahmen 16, die an ihrem Boden jeweils drei über den Umfang verteilt angeordnete Abflusslöcher 23 (siehe Figur 5) besitzen. Darüber hinaus sind am Boden der Aufnahmen 16 jeweils drei über den Umfang verteilt angeordnete, nach oben hervorstehende Haken 21 ausgebildet, die ein zweites Eingriffsteil bilden und mit der Schulter 20 des Borstenträgers 14 in formschlüssigen Eingriff treten können.The brush body 11 has in its head portion 13 in the longitudinal direction of the toothbrush one behind the other lying cup-shaped receptacles 16, which at its bottom in each case three distributed over the circumference arranged drain holes 23 (see FIG. 5 ). In addition, at the bottom of the receptacles 16 each three distributed over the circumference arranged, upwardly projecting hooks 21 are formed, which form a second engagement part and with the Shoulder 20 of the bristle carrier 14 can engage in positive engagement.

In der Mitte der napfförmigen Aufnahme 16 ist am Boden ein sich nach oben erstreckendes Nabenteil 27 angeformt, das ein sacklochförmiges Aufnahmeloch 24 besitzt. In das Aufnahmeloch 24 ist ein zylinderförmiger und insbesondere kreiszylinderförmiger Stift 17 aus Metall oder Kunststoff einsetzbar, der aus dem Nabenteil 27 nach oben hervorsteht, so dass der hervorstehende Abschnitt des Stiftes 17 in das Aufnahmeloch 22 an der Unterseite des Borstenträgers 14 eingesetzt werden kann.In the middle of the cup-shaped receptacle 16 at the bottom of an upwardly extending hub portion 27 is formed, which has a blind hole-shaped receiving hole 24. In the receiving hole 24, a cylindrical and in particular circular cylindrical pin 17 made of metal or plastic is used, which protrudes from the hub portion 27 upwards so that the protruding portion of the pin 17 can be inserted into the receiving hole 22 at the bottom of the bristle carrier 14.

Figur 6 zeigt einen Schnitt durch den Kopfabschnitt der Zahnbürste im montierten Zustand. Der Stift 17 ist in das Aufnahmeloch 24 des Nabenteils 27 eingesetzt und dort drehfest gehalten. Der die Borstenbündel 25 tragende Borstenträger 24 ist mit seinem unteren Aufnahmeloch auf das obere, hervorstehende Ende des Stiftes 17 aufgesetzt und auf diesem drehbar gehalten. Alternativ ist es jedoch auch möglich, den Stift im Aufnahmeloch 22 des Borstenträgers 14 zu befestigen und drehbar in das Aufnahmeloch 24 des Kopfabschnitts 13 einzusetzen. FIG. 6 shows a section through the head portion of the toothbrush in the assembled state. The pin 17 is inserted into the receiving hole 24 of the hub portion 27 and held there against rotation. The bristle carrier 24 carrying the bristle bundles 25 is placed with its lower receiving hole on the upper, protruding end of the pin 17 and held rotatably on this. Alternatively, however, it is also possible to fix the pin in the receiving hole 22 of the bristle carrier 14 and to insert it rotatably into the receiving hole 24 of the head section 13.

Der Borstenträger 14 ist in der Aufnahme 16 durch eine Auszugssicherung 26 gehalten, die von den Haken 21 am Boden der Aufnahme 16 und der umlaufenden Schulter 20 am unteren Ende des Borstenträgers 14 gebildet ist. Wie Figur 6 zeigt, untergreift die Schulter 20 des Borstenträgers 14 im montierten Zustand die Haken 21 der Aufnahme 16, von denen in Figur 6 nur ein Haken 21 sichtbar ist. Dabei ist ersichtlich, dass der Borstenträger 14 sich im montierten, unbenutzten Zustand gemäß Figur 6 alleine über Stift 17 am Kopfteil 13 abstützt, d.h. in diesem Zustand in geringem Abstand von der Oberfläche der Aufnahme 16 bzw. des Kopfabschnittes 13 gehalten ist. Dies sichert eine leichtgängige Drehbarkeit des Borstenträgers 14 und verhindert eine übermäßige Reibung zwischen aufeinanderliegenden Kunststoffteilen bei gleichzeitiger exakter und sicherer Positionierung des Stifts 17.The bristle carrier 14 is held in the receptacle 16 by a safety catch 26 which is formed by the hooks 21 at the bottom of the receptacle 16 and the peripheral shoulder 20 at the lower end of the bristle carrier 14. As FIG. 6 shows, engages the shoulder 20 of the bristle carrier 14 in the mounted state, the hooks 21 of the receptacle 16, of which in FIG. 6 only one hook 21 is visible. It can be seen that the bristle carrier 14 in the assembled, unused state according to FIG. 6 alone on pin 17 am Head part 13 is supported, that is held in this state at a small distance from the surface of the receptacle 16 and the head portion 13. This ensures a smooth rotation of the bristle carrier 14 and prevents excessive friction between superimposed plastic parts while accurate and secure positioning of the pin 17th

Wie die Figuren 2, 3 und 6 zeigen, ist der Borstenträger 14 in seinem oberen Bereich tellerförmig ausgebildet, wobei auf der Unterseite des tellerförmigen Bereiches der Ansatz 19 angeformt ist. Der tellerförmige Bereich und der Ansatz 19 sind so dimensioniert, dass die Außenabmessungen des tellerförmigen Bereiches größer als die Innenabmessungen der Aufnahme 16 sind, so dass der tellerförmige Bereich oberhalb der oberen Zugangsöffnung der Aufnahme 16 angeordnet ist und diese abdeckt (siehe Figur 6), wobei der Borstenträger 14 nur mit dem Ansatz 19 in die Aufnahme 16 eingreift.As the Figures 2 . 3 and 6 show, the bristle carrier 14 is plate-shaped in its upper portion, wherein on the underside of the plate-shaped portion of the projection 19 is formed. The dish-shaped region and the projection 19 are dimensioned such that the outer dimensions of the dish-shaped region are larger than the inner dimensions of the receptacle 16, so that the plate-shaped region is arranged above the upper access opening of the receptacle 16 and covers it (see FIG. 6 ), wherein the bristle carrier 14 engages only with the projection 19 in the receptacle 16.

Bei der Reinigung der Zahnbürste durch Spülen mit Wasser kann das Wasser zwischen dem Borstenträger 14 und der Oberseite der Aufnahme 16 hindurchströmen und somit eventuelle Verunreinigungen, die sich in der Aufnahme 16 angesammelt haben, zuverlässig lösen und durch die im Boden der Aufnahme 16 ausgebildeten Abflusslöcher 23 wegspülen.When cleaning the toothbrush by rinsing with water, the water between the bristle carrier 14 and the top of the receptacle 16 to flow through and thus reliably solve any impurities that have accumulated in the receptacle 16 and through the bottom of the receptacle 16 formed drainage holes 23rd wash away.

Wie Figur 7 zeigt, verlaufen die Drehachsen D1 und D2, um die die Borstenträger 14 drehbar sind, nicht parallel zueinander, sondern weisen einen Winkelversatz von 10° bis 30° zueinander auf. Dabei sind die Drehachsen D1 und D2 der Borstenträger 14 zu entgegengesetzten Seiten einer Längsachse L der Zahnbürste 10 geneigt ausgerichtet.As FIG. 7 shows, the axes of rotation D1 and D2, about which the bristle carrier 14 are rotatable, not parallel to each other, but have an angular offset of 10 ° to 30 ° to each other. The axes of rotation D1 and D2 of the bristle carrier 14 are aligned inclined to opposite sides of a longitudinal axis L of the toothbrush 10.

Die beiden in Längsrichtung der Zahnbürste 10 hintereinander liegenden Aufnahmen 16 sind gemäß Figur 8 über einen Steg 28 des Kopfabschnittes 13 miteinander verbunden. Der Steg 28 ist so bemessen, dass die dem Griffabschnitt abgewandte, vordere, gemäß Figur 8 linke Aufnahme 16 relativ zu der dem Griffabschnitt zugewandten, gemäß Figur 8 rechten Aufnahme schwenkbar ist, wie es durch den Doppelpfeil S und eine gestrichelte Konturlinie angedeutet ist. Die Federwirkung des Steges lässt sich durch dessen Material und Abmessungen einstellen. Um eine bestimmte Federwirkung zu erreichen, ist der Steg 28 mit einer Ummantelung 29 aus einem elastomeren Kunststoff versehen.The two in the longitudinal direction of the toothbrush 10 successive receptacles 16 are according to FIG. 8 connected by a web 28 of the head portion 13 with each other. The web 28 is dimensioned such that the handle portion remote from the front, according FIG. 8 left receptacle 16 relative to the handle portion facing, according to FIG. 8 right recording is pivotally, as indicated by the double arrow S and a dashed contour line. The spring effect of the web can be adjusted by its material and dimensions. In order to achieve a certain spring effect, the web 28 is provided with a sheath 29 made of an elastomeric plastic.

Claims (13)

  1. Toothbrush (10) having a brush body (11), which has a handle portion (12) and a head portion (13), wherein at least one bristle carrier (14), which carries a bristle covering (15), is mounted in a rotatable manner in the head portion (13), and wherein the head portion (13) has formed in it at least one cup-like mount (16), into which the bristle carrier (14) is inserted, wherein the mount (16) has arranged in it a pin (17), which bears the bristle carrier (14) and forms the axis of rotation thereof, wherein the pin (17) retains the bristle carrier (14) at a small distance from the mount (16) or the head portion (13), and wherein there is a pullout-prevention means (26) provided to prevent removal of the bristle carrier (14) from the mount (16), wherein the pin (17) is of cylindrical design and has its one end seated in an accommodating hole (24), which is in the form of a blind hole in the cup-like mount (16), and has its other end seated in an accommodating hole (22), which is in the form of a blind hole in the bristle carrier, wherein the pullout-prevention means (26) comprises at least one first engagement part (20), which is formed on the bristle carrier (14), and at least one second engagement part (21), which is formed on the head part (13), wherein the engagement parts (20, 21) can be brought into form-fitting engagement with one another, characterized in that the first engagement part (20) is formed by a fully encircling, radially projecting shoulder of the bristle carrier (14), and in that a plurality of circumferentially distributed second engagement parts (21) are provided.
  2. Toothbrush according to Claim 1, characterized in that the second engagement parts (21) are formed by a plurality of hooks formed on the head portion (13).
  3. Toothbrush according to Claim 1 or 2, characterized in that the cup-like mount (16) has formed in it a hub part (27), which has the accommodating hole (24) for the pin (17).
  4. Toothbrush according to one of Claims 1 to 3, characterized in that the bristle carrier (14) is of plate-like design and has an extension (19) on its underside engaging in the mount (16).
  5. Toothbrush according to Claim 4, characterized in that the bristle carrier (14) covers the mount (16) on the upper side and has only the extension (19) engaging in the mount (16).
  6. Toothbrush according to one of Claims 1 to 5, characterized in that the accommodating hole (22) for the pin (17) is formed in the bristle carrier (14), on the underside thereof.
  7. Toothbrush according to one of Claims 1 to 6, characterized in that at least one outflow hole (23) is formed in the floor of the cup-like mount (16).
  8. Toothbrush according to one of Claims 1 to 7, characterized in that at least two mounts (16) are arranged one behind the other in the longitudinal direction of the toothbrush (10), and in that a bristle carrier (14) is inserted in a rotatable manner into each mount (16).
  9. Toothbrush according to Claim 8, characterized in that the axes of rotation (D1, D2) of the bristle carriers (14) are oriented in an inclined manner towards opposite sides of a longitudinal axis (L) of the toothbrush (10).
  10. Toothbrush according to Claim 8 or 9, characterized in that the two mounts (16) are connected to one another by means of a crosspiece (28) of the head portion (13), wherein the crosspiece (28) is dimensioned such that the mount (16) which is directed away from the handle portion (12) can be pivoted relative to the mount (16) which is directed towards the handle portion (12).
  11. Toothbrush according to Claim 10, characterized in that the crosspiece (28) has a sheath (29).
  12. Toothbrush according to Claim 11, characterized in that the sheath (29) is formed by an elastomeric plastics material.
  13. Toothbrush according to one of Claims 1 to 12, characterized in that the pin (17) consists of metal or of plastics material.
EP12735773.9A 2011-04-28 2012-04-25 Toothbrush with rotatable bristle support Active EP2701547B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110018879 DE102011018879A1 (en) 2011-04-28 2011-04-28 Toothbrush with rotatable bristle carrier
PCT/EP2012/001764 WO2012146373A2 (en) 2011-04-28 2012-04-25 Toothbrush with rotatable bristle support

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EP2701547A2 EP2701547A2 (en) 2014-03-05
EP2701547B1 true EP2701547B1 (en) 2015-06-03

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EP12735773.9A Active EP2701547B1 (en) 2011-04-28 2012-04-25 Toothbrush with rotatable bristle support

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EP (1) EP2701547B1 (en)
DE (1) DE102011018879A1 (en)
WO (1) WO2012146373A2 (en)

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Publication number Priority date Publication date Assignee Title
CN102106646B (en) * 2011-01-31 2017-07-04 李政衡 Cross toothbrush
WO2013175513A1 (en) * 2012-05-21 2013-11-28 P & B S.N.C. Di Piccenna Damiel E.C. Toothbrush structure
CN108968309A (en) * 2018-07-18 2018-12-11 于守东 A kind of novel toothbrush

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5727273A (en) * 1997-01-23 1998-03-17 Pai; Chung-Jeng Electric toothbrush assembly with sterilizing and charging devices
DE19717334C1 (en) * 1997-04-24 1998-07-09 Braun Ag Brush attachment for electric toothbrush with interchangeable brush attachment
DE19745876A1 (en) * 1997-10-17 1999-04-22 Braun Ag Brush part for electric toothbrush
DE29822826U1 (en) * 1998-01-05 1999-04-01 Trisa Holding Ag, Triengen Brush head for a toothbrush
US6338176B1 (en) * 1998-03-16 2002-01-15 Lee Y. Smith Manual rotary brush
CN2354429Y (en) * 1998-09-04 1999-12-22 裴学增 Toothbrush with rotary head operated by hand
US6751823B2 (en) * 1999-06-23 2004-06-22 Ladislau Biro Motorized toothbrush brush tip with two counter-rotating brush heads rotating on a common axis
DE10205010B4 (en) * 2002-02-07 2004-06-17 Braun Gmbh toothbrush head
DE10315011A1 (en) * 2002-11-05 2004-05-19 Novotech Ltd., St.Peter Port, Guernsey Electric toothbrush has toothbrush rod constructed with gear unit for driving only one brush carrying plate connected to other brush carrying plate via push rod to drive other brush carrying plate
WO2006079122A1 (en) 2005-01-21 2006-07-27 Malcolm Duncan A toothbrush

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WO2012146373A3 (en) 2012-12-27
EP2701547A2 (en) 2014-03-05
DE102011018879A1 (en) 2012-10-31
WO2012146373A2 (en) 2012-11-01

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