WO2004043284A1 - Brosse a dents electrique et tete de brosse a dents correspondante - Google Patents

Brosse a dents electrique et tete de brosse a dents correspondante Download PDF

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Publication number
WO2004043284A1
WO2004043284A1 PCT/EP2003/012308 EP0312308W WO2004043284A1 WO 2004043284 A1 WO2004043284 A1 WO 2004043284A1 EP 0312308 W EP0312308 W EP 0312308W WO 2004043284 A1 WO2004043284 A1 WO 2004043284A1
Authority
WO
WIPO (PCT)
Prior art keywords
bristle
toothbrush
carrier
brush head
axis
Prior art date
Application number
PCT/EP2003/012308
Other languages
German (de)
English (en)
Inventor
Gerhard Kressner
Armin Schwarz-Hartmann
Original Assignee
Braun Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Braun Gmbh filed Critical Braun Gmbh
Priority to AU2003293656A priority Critical patent/AU2003293656A1/en
Publication of WO2004043284A1 publication Critical patent/WO2004043284A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/349—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor with multiple brush bodies
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/16—Power-driven cleaning or polishing devices
    • A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
    • A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
    • A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
    • A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
    • A61C17/3427—Rotation around the axis perpendicular to the axis of toothbrush handle and in the plane defined by the bristle holder

Definitions

  • the present invention relates to a toothbrush head of an electric toothbrush with a brush head holder which can be connected to a hand part of the toothbrush, and a bristle holder which carries a bristle field, is movably mounted on the brush head holder and can be driven in an oscillating manner by the drive of the toothbrush, the bristle holder being a drive coupling for coupling to a drive element on the hand part.
  • the invention further relates to an electric toothbrush with such a toothbrush head.
  • two bristle fields can be provided on the toothbrush head, which move differently or perform a relative movement to one another.
  • a relative movement can be brought about, for example, simply by driving only one of the bristle fields while the other bristle field is arranged to be immobile.
  • the configuration of the tufts of bristles arranged on the two bristle carriers is not very suitable for effectively cleaning interdental spaces.
  • the present invention is therefore based on the object of creating an improved toothbrush and an improved toothbrush head for this purpose, avoiding the disadvantages of the prior art and developing the latter in an advantageous manner.
  • An efficient rocking movement of the bristles should preferably be achieved with a simply designed drive.
  • the brush head carrier itself has bearing means for movably mounting the brush head carrier on the hand part and a drive coupling for coupling the brush head carrier to the drive element on the hand part, by means of which the brush head carrier can itself be driven in an oscillating manner. It is not only the moveable bristle holder that is driven, but the entire brush head holder itself.
  • the brush head carrier practically performs a basic movement, which is superimposed on the movement of the movable bristle carrier.
  • the brush head holder is driven in addition to the movable bristle holder.
  • a further bristle field is advantageously provided on the bristle head carrier, which is preferably rigidly attached directly to the bristle head carrier.
  • Two bristle fields with different movements are therefore provided.
  • One of the bristle fields only takes part in the movement of the brush head wearer.
  • the other bristle field, which sits on the movable bristle carrier, is additionally driven. The resulting relative movement between the two bristle fields enables particularly efficient tooth cleaning to be achieved.
  • the mounting of the brush head carrier can be designed differently in order to achieve different basic movements of the brush head carrier.
  • the bearing means of the brush head carrier are designed as pivot bearings, so that the entire brush head carrier can be pivoted about a pivot axis relative to the handle of the toothbrush or the hand part of the toothbrush.
  • the bearing means preferably define a pivot axis extending transversely to the toothbrush longitudinal axis.
  • the bearing means of the brush head carrier can be designed as a sliding bearing, which preferably also permits a translational movement of the brush head carrier along a movement axis transversely to the longitudinal axis of the toothbrush.
  • Different arrangements and orientations of the pivot axis and / or the movement axis of the brush head carrier are possible.
  • An advantageous embodiment of the invention can consist in that the pivot axis is arranged coaxially with the movement axis.
  • the brush head carrier can be driven on the one hand in an oscillating manner about the pivot axis and on the other hand can perform an oscillating poking movement or translational movement parallel to the pivot axis.
  • the pivot axis of the brush head carrier and / or its translational movement axis are oriented essentially parallel to a main bristle direction of the bristles arranged on the brush head carrier. If the pivot axis in the longitudinal direction of the toothbrush is arranged on an edge section of the bristle field which is directly attached to the bristle head carrier, the opposite edge section of this bristle field carries out a transversely reciprocating movement. In principle, it is also possible to arrange the pivot axis in the center with respect to the bristle field seated on the bristle head carrier, so that the bristle field rotates in itself. If the bristle field is additionally moved about a translational movement axis parallel to the main direction of the bristles, the bristles make an oscillating, pocketing stroke movement, which brings about an improved penetration of the bristles into the interdental spaces.
  • the pivot axis and / or the translatory movement axis of the brush head holder can also be oriented perpendicular to the main bristle direction and thus essentially parallel to the plane defined by the bristle holder.
  • the bristle head carrier executes an up and down rocking movement, so that the tufts of bristles arranged thereon, as far as they are spaced apart from the swivel axis, poke up and down.
  • the additionally driven bristle carrier which is movably mounted on the brush head carrier, can perform different movements.
  • the movable bristle carrier and the entire bristle head carrier have mutually spaced, but parallel axes of movement.
  • the movable bristle holder is pivotally mounted about a pivot axis which extends approximately parallel to the main bristle direction of the bristles arranged on the movable bristle holder.
  • the movable bristle holder rotates relative to the brush head holder in itself or, in the case of an eccentric arrangement of the pivot axis, carries out a corresponding wiping movement.
  • the bristle holder moves in accordance with the basic movement of the entire brush head holder.
  • the bristle carrier can perform oscillatory sliding movement.
  • it can be slidably mounted on the brush head carrier along a translational movement axis, which can preferably be coaxial to the pivot axis.
  • the drive movements of the bristle head carrier and the bristle carrier movably mounted thereon can in principle be realized with different drives and drive elements.
  • Both the brush head carrier and the movable bristle carrier are preferably coupled to a common drive element.
  • a structurally simple and efficient design of the drive can consist in that a drive rocker is provided as the drive element on the hand part, to which the brush head holder and the movable bristle holder can be coupled, which can be rocked about a transverse axis running transversely to the longitudinal direction of the toothbrush. In principle, a uniaxial rocking movement can be provided in one plane.
  • a conical drive rocker is provided, the orbit of the toothbrush head end of the drive rocker being circular or elliptical.
  • these each have as the drive coupling an articulated connection which is articulated about an articulated axis transverse to the longitudinal direction of the toothbrush.
  • the corresponding joint piece of the bristle holder or of the bristle head holder participates in the transverse movement of the drive rocker and compensates for the angular rotation of the drive rocker due to its articulation.
  • both moving components i.e. the entire brush head carrier and the bristle carrier movable for this purpose can be coupled to a common drive element of the drive on the hand part, a simple design of the drive train is achieved.
  • the articulated connection between the bristle carrier or the bristle head carrier and the drive rocker preferably has a further degree of freedom in addition to its articulation about the one articulation axis.
  • the articulated connection can permit a translatory movement along the articulation axis between the bristle carrier or the bristle head carrier and the drive element on the hand part side.
  • the bristle holder and the brush head holder can each have a longitudinally slit-shaped recess transversely to the toothbrush longitudinal direction, which can be brought into engagement with the drive element on the handle part.
  • the toothbrush head in a further development of the invention is designed as an exchangeable head which can be attached to the hand part of the toothbrush as an attachment and can be removed again for replacement.
  • latching means are provided on the brush head carrier, which can be latched onto the hand part of the toothbrush with complementary latching means.
  • the attachment of the brush head holder to the hand part in the fastened state has a degree of freedom which enables the drive movement of the brush head holder.
  • latching means can be provided on the brush head carrier, which can be latched by moving the brush head carrier in the longitudinal direction of the toothbrush.
  • the toothbrush head can be slipped onto the handpiece or its brush tube in the longitudinal direction of the toothbrush.
  • the locking means lock by themselves. To remove the toothbrush head, only the locking means need to be released and the toothbrush head pushed off in the longitudinal direction of the toothbrush.
  • a latching hook is provided on the brush head carrier and can be latched on the hand part about a longitudinal groove running transversely to the longitudinal direction of the toothbrush.
  • the latching connection is preferably designed such that the latching can be released by pressing in the latching hook, as a result of which one-hand operation is possible when releasing the toothbrush head. All that is needed is to press in the locking hook and push the toothbrush head forward. It goes without saying that the reverse arrangement of the latching means is also possible.
  • the latching hook can be provided on the hand part and the longitudinal groove, in which the latching hook engages, on the brush head carrier.
  • the longitudinal groove expediently has a slightly curved course, in particular when the brush head carrier is pivotally mounted, the longitudinal groove having a curvature which is concentric with the pivot axis of the brush head carrier.
  • the latching device is designed as a joint.
  • the joint which allows the movement of the brush head wearer, becomes functional by latching.
  • An articulated half preferably an axle stub
  • the joint sleeve is preferably designed as a slotted sleeve with resilient walls so that the stub axle on the opposite component passes through the slot into the joint sleeve can be pressed.
  • the resilient walls snap over the stub shaft and hold it in the engaged position.
  • the joint formed by the latching device can also be designed as a sliding joint if the brush head carrier is to be mounted and driven in a translationally displaceable manner.
  • an axle bolt can snap into a slotted sleeve, which then forms a sliding sleeve.
  • the attachment device of the brush head carrier forms its movable mounting and defines the axis of movement thereof.
  • FIG. 1 shows a longitudinal section through an electric toothbrush with an exchangeable toothbrush head according to a preferred embodiment of the invention
  • Figure 2 is a plan view of the toothbrush head of Figure 1, for reasons of
  • a bristle carrier movably mounted on the brush head carrier of the toothbrush head has been omitted and the brush head carrier is shown in a position deflected relative to the brush tube of the hand part of the toothbrush,
  • Figure 3 is a partial side view of the toothbrush from the previous ones
  • Figure 4 is a longitudinal section through the toothbrush head along the line A-A in Figure
  • Figure 5 shows a longitudinal section along the line B-B in Figure 3, the coupling of the
  • FIG. 6 shows a perspective view of the two bristle fields of the toothbrush head from the previous figures
  • 7 shows a plan view of the underside of the toothbrush in the region of the toothbrush head, which shows the interface between the brush tube on the handpiece side and the brush head holder of the toothbrush head and the swivel axis of the brush head holder which can be snapped onto the brush tube of the handpiece
  • FIG. 8 is a partial, perspective view of a toothbrush head with a movably mounted brush head holder according to an alternative embodiment of the invention, according to which the brush head holder and the rear additional bristle holder attached thereto are mounted so that they can be rocked about a transverse axis,
  • Figure 9 is a partial, perspective view of the toothbrush head
  • FIG. 10 shows a partial, perspective view of a toothbrush head with two movably mounted bristle carriers according to a further embodiment of the invention, according to which the brush head carrier with the rear additional bristle carrier is mounted so that it can be moved back and forth transversely to the longitudinal direction of the toothbrush and transversely to the main direction of the bristles, and
  • Figure 1 1 is a partial, perspective view of the toothbrush head
  • FIG 10 which shows the drive mechanism for the two bristle carriers and in particular the coupling of the bristle head carrier to the drive rocker.
  • the toothbrush shown in FIG. 1 comprises a hand part 1 and a toothbrush head 2 which sits on a brush tube 3 which forms an end face of the hand part 1 or is connected thereto.
  • the hand part 1 is formed by a toothbrush housing 4, in which a battery receiving compartment and a drive motor 5 are arranged axially one behind the other.
  • the brush head 2 has two bristle fields, namely a main bristle field 9 located directly at the head end and a rear additional bristle field 8 which is located in the immediate vicinity of the main bristle field 9 on its side facing the hand part 1.
  • the bristle field located at the head end is carried by a main bristle carrier 10 which is approximately circular plate-shaped towards the bristle field and Nem brush head bracket 11 is attached.
  • the bristle carrier 10 is rotatably seated on an axis of rotation 12 anchored in the brush head carrier 11, which extends perpendicular to the longitudinal axis of the toothbrush approximately parallel to the main bristle direction of the bristle field 9.
  • the axis of rotation 12 forms the axis of symmetry of the plate-shaped bristle carrier 10.
  • the bristle carrier 10 is driven by the motor 5 by means of a transmission 14 in the form of a drive rocker 15 in a rotationally oscillating manner about the axis of rotation 12.
  • the drive rocker 15 is a straight, rigid metal rod and is mounted between the motor and the bristle carrier 10 in the hand part 1 or in the brush tube 3 in a bearing 16, which can be designed as an elastic bearing plug in the form of a ring or a sleeve.
  • the bearing 16 allows a multi-axis pivoting of the drive rocker 15 about axes which lie in a plane perpendicular to the longitudinal direction of the toothbrush.
  • the drive rocker 15 is driven by an eccentric 17, which is non-rotatably seated on the motor shaft, which extends in the longitudinal direction of the toothbrush (see FIG. 1).
  • the drive rocker 15 carries out a double-conical wobble or orbital movement, the tips of the two cones lying approximately in the region of the bearing 16.
  • the two ends of the drive rocker 15 each perform a circular path movement in a plane perpendicular to the longitudinal direction of the toothbrush.
  • the end of the drive rocker 15 facing the bristle carrier 10 is seated in a longitudinally slit-shaped recess 18 in the bristle carrier 10, which is formed in a peripheral surface of the bristle carrier 10 facing the hand part 1 and extends essentially parallel to the axis of rotation 12 (cf. FIGS. 1). Due to the longitudinal slot-shaped recess, only the component of the drive movement of the drive rocker 15 is transmitted to the bristle carrier 10 transversely to the axis of rotation 12. The up and down movement, i.e. the component of the circumferential drive movement parallel to the axis of rotation 12 is not transmitted, since the drive rocker 15 can move freely in the recess 18 parallel to the axis of rotation 12.
  • the rear bristle field 8 which is closer to the hand part 1, is carried by an approximately plate-shaped additional bristle carrier 13 which is rigidly mounted on the bristle head carrier 11 or is integrally formed integrally thereon
  • the oscillating pivoting movement of the entire toothbrush head about the pivot axis 19 corresponds, so to speak, to a basic movement and defines the only movement of the additional bristle field 8.
  • This basic movement is superimposed on the additional pivoting movement of the bristle carrier 10, which is movably mounted on the bristle head carrier 11, about its pivot axis 12.
  • the two bristle fields 8 and 9 lead hence a relative movement , which is determined by the rotational movement of the bristle field 9 about the axis of rotation 12. Nevertheless, both movements are brought about by only one common drive element, namely the drive rocker 15, the movement of which is tapped twice, so to speak, once by the drive coupling 21 of the entire brush head carrier 11 and once more by the slot-shaped drive coupling 18 on the bristle carrier 10.
  • the drive coupling 21 is provided on the underside of the additional bristle holder 13 on the brush head holder 11 and consists of a longitudinal recess 22 parallel to the pivot axis 19, in which the drive rocker 15 is guided.
  • the longitudinal recess 22 is defined in the embodiment shown by two post-shaped projections 23 and 24, between which the drive rocker 15 is guided.
  • the brush head 2 is detachably attached to the brush tube 3. It can be easily pulled off or pushed onto the brush tube 3 in the axial direction.
  • the brush head carrier 11 has a roughly half-shell-shaped fastening section 34 with which it can be pushed onto or into a corresponding likewise half-shell-shaped fastening section 35 at the front end of the brush tube 3.
  • the two fastening sections complement each other so that, when pushed together, they form a hollow profile which continues the brush tube 3.
  • two bearing sections 50 and 51 are provided, both of which can be locked by axially pushing on the toothbrush head 2.
  • the one bearing section 50 defines the pivot axis 19 of the brush head carrier 1 1.
  • the brush tube 3 has a slotted bearing sleeve 52 on its underside, which has a slot 53 on the end face is open.
  • the bearing sleeve 52 is also slotted on its rear side, so that the lateral walls of the bearing sleeve 52 can spring away transversely.
  • the bearing axis 54 which is formed on the underside of the brush head carrier 11, can be inserted in the axial direction through the slot 53 into the bearing sleeve 52.
  • the side legs of the bearing sleeve 52 spring open.
  • the bearing axis 54 reaches its position coaxial with the bearing sleeve 52, the lateral legs snap back so that the brush head carrier 11 is snapped.
  • the bearing sleeve 52 together with the bearing axis 54 forms a pivot axis about which the brush head carrier 11 can be pivoted.
  • the second bearing section 51 lies on the upper side of the brush head carrier 11 and locks the latter to the brush tube 3. It serves as a kind of safety device which prevents the snap connection of the bearing section 50 from being released unintentionally.
  • the locking device in the area of the bearing section 50 is formed by a locking hook 36 and a complementary locking recess 37.
  • the latching hook 36 is integrally formed on the brush head carrier 1 1 in the embodiment shown, while the latching recess 37 is formed in the brush tube 3.
  • the latching hook 36 is designed to be elastic so that it can spring radially inward when the toothbrush head is pushed onto the brush tube. If the end position is reached, the latching hook 36 springs back and snaps into the latching recess 37 in the brush tube 3.
  • the locking recess 37 is in the form of a longitudinal groove extending transversely to the toothbrush longitudinal direction, so that the locking lug of the locking hook 36 can move back and forth transversely in the locking recess 37. This enables the oscillating pivoting movement of the entire toothbrush head 2 about its pivot axis 19.
  • the longitudinal groove-shaped latching recess 37 does not have a completely straight path, but rather a curve which is curved around the pivot axis of the brush head carrier and corresponds to the circular movement of the latching hook 36.
  • FIGS. 8 to 11 show alternative mountings of the additional bristle field 8 or of the bristle head carrier 11.
  • the toothbrush heads shown therein are also provided for the toothbrush shown in FIG. 1 and otherwise correspond to the previously described toothbrush head, so that in this respect reference is made to the description thereof and the same reference numbers are used for corresponding components.
  • the brush head carrier 11 is pivotally mounted about a pivot axis 29 which extends essentially parallel to the plane defined by the additional bristle carrier 13 and extends transversely to the longitudinal direction of the toothbrush.
  • the bristle head carrier is pivotally mounted approximately centrally under the additional bristle carrier 13, so that it can perform an up and down rocking movement around the pivot axis 25.
  • pivot axis 25 can also be arranged eccentrically, that is to say in the longitudinal direction of the toothbrush, further to the rear or further to the front in relation to the additional bristle field 8.
  • both the main bristle carrier 10 and the end sections of the additional bristle carrier 13 can rock up and down according to the arrow 26, so that the bristles perform a poking movement.
  • the main bristle carrier also rotates about its axis of rotation 12.
  • an engagement or sliding surface 27 is provided on its underside as a drive coupling, with which it sits on the drive rocker 15, which also drives the main bristle carrier 10.
  • the engagement or sliding surface 27 is formed by the end surface of an elongated plunger or hump 28, which extends transversely to the toothbrush longitudinal direction and projects towards the drive rocker 15.
  • the surface of the plunger 28 can be essentially flat.
  • the rotating drive rocker traverses in the transverse direction over the sliding surface 27, the vertical component of the rotating rocking movement being transmitted to the plunger or hump 28 and rocking the brush head carrier 11 up and down, the sliding surface 27 with the drive rocker 15 being affected by the toothbrushing reaction forces, which act on the additional bristle field are kept in engagement.
  • the bristle head carrier 11 can also be preloaded here, for example by means of a spring, which presses the bristle head carrier against the drive rocker.
  • a groove-shaped transverse recess is provided in a corresponding section of the brush head carrier 11, in which the drive rocker 15 is seated, so that the brush head carrier would be pressed upward by the drive rocker and actively pulled downward .
  • Such a transverse groove corresponds to the arrangement of two parallel sliding surfaces 27, between which the drive rocker 15 is guided.
  • the bearing axis 51 of the brush head holder 11 is also snapped into a bearing sleeve 52, which together form a swivel joint for the brush head holder.
  • the snap-in movement does not take place in the longitudinal direction of the toothbrush, but transversely to it in accordance with the longitudinal extent of the slot 53.
  • the brush head carrier is initially attached to the handpiece 1 of the toothbrush when it is attached Drive rocker 15 threaded and then depressed so that the bearing portion 51 is locked.
  • FIGS. 10 and 11 A further possible mounting of the additional bristle carrier 13 is shown in FIGS. 10 and 11.
  • the brush head carrier 11 is mounted here in a translationally displaceable manner, namely along two parallel sliding guide axes 31 which extend in the plane defined by the additional bristle carrier 13 transversely to the longitudinal direction of the toothbrush.
  • two sliding axes 31 can be provided, a rear end section facing the hand part 1 and an end section of the bristle head holder 11 facing the main bristle holder 10 being supported under the additional bristle holder 13 by said sliding guide.
  • the brush head carrier and thus the additional bristle carrier 13 can carry out laterally back and forth movements, as the arrow 32 shows.
  • the translationally oscillating drive movement of the brush head carrier 11 is also effected in this case by the drive rocker 15.
  • the brush head carrier 11 is seated on the drive rocker 15 by means of a transverse guide 33.
  • the transverse guide 33 is defined by two parallel post-shaped projections 23 and 24, which have a gap or a longitudinal recess 22 between them define that extends substantially perpendicular to the plane of the additional bristle carrier 13.
  • the drive rocker 15 can be vertical between the two projections 23 and 24, i.e. slide freely on and off in the longitudinal symmetry plane of the toothbrush. In a plane perpendicular to this, i.e. in a plane parallel to the two sliding guide axes 31, however, the drive movement of the drive rocker 15 is transmitted, so that the brush head carrier 11 oscillates back and forth in the direction of the sliding guide axes 31.
  • the sliding axis can also be formed approximately parallel to the main bristle direction, in which case the sliding surface shown in FIGS. 8 and 9 could be provided.
  • the storage is formed in the manner described above by a snap connection.
  • the bearing axles 54 which are fixed to the brush head, snap into slots in sliding tube sleeves 52 which are fixed to the support tube.
  • the main bristle field 9 which can be driven in a rotationally oscillating manner, has an overall approximately circular-cylindrical outline and is formed by a plurality of bristle tufts of different inclinations, different heights and different cross-sections.
  • central first bristle tufts 38 are arranged centrally around the axis of rotation of the main bristle carrier. They extend perpendicular to the plane defined by the bristle carrier 10 and have an approximately circular or slightly oval cross section.
  • Four of the first bristle tufts 38 are provided. They are centered around the axis of rotation 19. Adjacent to the first bristle tuft 38 are second bristle tufts 39 which, when the bristle carrier 10 is not rotated, lie on the longitudinal center axis of the toothbrush and lie in the longitudinal direction in front of or behind the first bristle tuft 38.
  • the second bristle tufts 39 have an oval cross section with a longitudinal axis extending transversely to the longitudinal axis of the toothbrush.
  • the second tufts of bristles 39 are also arranged perpendicular to the plane defined by the bristle carrier 10. Their distance from the axis of rotation 19 is greater than that of the first bristle tufts 38.
  • the ratio of contour length to contour width is approximately two.
  • the further bristle tufts of the driven bristle field are arranged at an incline, in a different orientation.
  • the fourth bristle tufts 40 which are arranged radially outside the first bristle tufts 38 on a second bristle tuft ring, so to speak, have an approximately circular cross section and are inclined radially outwards, i.e. their free working ends are further away from the axis of rotation of the bristle holder than their fastening sections fastened to the bristle holder 10.
  • the angle of inclination is acute and is less than 20 °.
  • the third tufts of bristles 41 are also arranged inclined radially outward. However, they have an oval contour or an elongated cross section, the longitudinal axis of the cross section being oriented radially.
  • the cross section of the third tufts of bristles is about two to three times as long as it is wide.
  • the third bristle tufts 41 sit radially outside the first bristle tufts 38 adjacent to them on an axis of symmetry of the bristle field running transversely to the toothbrush longitudinal direction.
  • the remaining bristle tufts of the bristle field 9 are also arranged at an incline, but they are inclined in the circumferential direction around the axis of rotation 12. They form the outer edge or rim of the bristle field 9.
  • the fifth tufts of bristles 42 have an oval contour or an elongated cross section, which is oriented approximately tangentially to the edge of the bristle carrier 10. In cross section, the tufts of bristles 42 are about twice to three times as long as they are wide. As FIG. 12 shows, the fifth bristle tufts 42 are arranged in pairs in the region of the longitudinal axis of the toothbrush when the bristle field 9 is not twisted. They are inclined towards one another in pairs, so that their free working ends are closer together than their fastening sections anchored in the bristle carrier 10.
  • sixth tufts of bristles 43 are provided, which likewise lie on the outer edge of the bristle field and are inclined in the circumferential direction about the axis of rotation 12. However, they have an approximately circular cross-section and are arranged in pairs on both sides of the third tufts of bristles 41 and also inclined in opposite directions.
  • the angles of inclination of the bristle tufts 43 and 42, which are inclined in the circumferential direction, are also acute and are preferably less than 20 ° to the vertical through the plane defined by the bristle carrier 10.
  • the tufts of bristles arranged on the movable bristle carrier 10 have two lengths.
  • the free ends of the fifth bristle tufts 42 define a plane.
  • the height difference between the tufts of bristles is in the range from 0.5 mm to 2.5 mm, preferably approximately 1.0 mm to 1.5 mm. In the drawn version, it is 1.2 mm.
  • the bristle tufts of the additional bristle field 8 likewise have different cross sections with regard to contour and area and are also arranged at different angles. Tufts of bristles of different lengths are also provided, as will be described.
  • FIG. 6 shows, roughly speaking, three rows of bristle tufts are provided in the additional bristle field, all of which extend approximately in the longitudinal direction of the toothbrush.
  • the middle row lies on the longitudinal central axis of the additional bristle carrier 13, while the two outer rows are spaced apart transversely thereto.
  • All the bristle tufts are arranged inclined towards the hand part 1. All tufts of bristles have an elongated or oval cross-section, but different cross-sectional areas.
  • First bristle tufts 44 of the fixed bristle field 8 have an oval cross section, the longitudinal axis of which is approximately twice as long as its transverse axis.
  • the first bristle tufts 44 alternate in the middle row with bristle tufts 45, hereinafter referred to as fourth bristle tufts, which are also inclined towards the rear of the hand part.
  • the fourth tufts of bristles 45 likewise have an oval cross section, but are of considerably slimmer design and have a smaller cross-sectional area than the first tufts of bristles. According to the design, the elongated cross-section is roughly three times as long as it is wide. The length of the oval cross section is slightly less than the length of the cross section of the first bristle tufts 44.
  • the two outer rows of the bristle tufts of the fixed bristle field 8 consist of second and third bristle tufts.
  • Second tufts of bristles 46 have an oval cross section with a relatively slim contour.
  • the longitudinal axis of the elongated cross-sectional contour is approximately three times the width of the cross-sectional contour.
  • the third bristle tufts 47 have an approximately circular cross section, the diameter of the cross section being slightly more than half the longitudinal axis of the cross section of the second bristle tufts 46.
  • the third bristle tufts 47 are spaced differently from the longitudinal center axis of the brush head 2. The distance to the longitudinal central axis decreases towards the hand part 1.
  • the third bristle tufts 47 are still one behind the other to such an extent that their contour lies approximately behind the contour of the much wider second bristle tufts 46.
  • the second and third tufts of bristles 46 and 47 are each forward at an acute angle, i.e. inclined towards the drivable bristle field 9, namely at an acute angle, which can preferably be 12 ° to 15 °.
  • All bristle tufts of the additional bristle field 8 are preferably inclined in the longitudinal center plane of the brush head 2 or planes parallel to it. In contrast, all of the bristle tufts of the main bristle field 9 are inclined differently or are arranged in a different orientation.
  • the bristle tufts of the additional bristle field 8 define two working levels.
  • the circular third bristle tufts 47 in the outer rows and the thicker first bristle tufts 44 in the middle row are shorter and, with their free working ends, define a deeper level which corresponds to the level of the first, second, third and fourth and sixth Bristle tufts of the main bristle field 9 is defined.
  • a higher, second level is defined by the longer fourth bristle tufts 45 in the middle row and the second bristle tufts 46 in the two outer rows. This higher level corresponds to the level which is defined by the longer, fifth bristle tufts of the main bristle field 9.
  • the slimmer oval bristle tufts have a greater length than the thicker bristle tufts.
  • the additional bristle field 8 does not have a circular contour, but an overall elongated contour which surrounds the end of the bristle field 9 facing it.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Brushes (AREA)

Abstract

La présente invention concerne une tête de brosse à dents pour une brosse à dents électrique, comprenant un support de tête de brosse qui peut être relié à un manche de brosse à dents, ainsi qu'un support à poils qui porte un ensemble de poils logé mobile sur le support à poils et pouvant être mis en oscillation par un mécanisme d'entraînement de la brosse à dents. Le support à poils présente un raccord d'entraînement à raccorder à un élément d'entraînement situé côté manche. La présente invention concerne également une brosse à dents électrique équipée d'une telle tête de brosse à dents. Selon cette invention, le support de tête de brosse présente lui-même des systèmes de positionnement permettant de positionner de manière mobile le support de tête de brosse sur le manche, ainsi qu'un raccord d'entraînement permettant de raccorder le support de tête de brosse à l'élément d'entraînement situé côté manche, au moyen duquel le support de tête de brosse peut être mis lui-même en oscillation. Non seulement le support à poils logé mobile, mais également l'ensemble du support de tête de brosse lui-même peuvent être mis en oscillation. Le support de tête de brosse effectue quasiment un mouvement de base qui se superpose au mouvement du support à poils mobile. Le support de tête de brosse est entraîné de manière supplémentaire au support à poils mobile. Il est avantageux de pourvoir, à côté de l'ensemble de poils sur le support à poils mobile, un autre ensemble de poils sur le support de tête de brosse, qui est monté fixement de préférence directement sur le support de tête de brosse. Ainsi, un des ensembles de poils n'effectue que le mouvement du support de tête de brosse. L'autre ensemble de poils, qui est situé sur le support à poils mobile, est encore entraîné de manière supplémentaire.
PCT/EP2003/012308 2002-11-13 2003-11-05 Brosse a dents electrique et tete de brosse a dents correspondante WO2004043284A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003293656A AU2003293656A1 (en) 2002-11-13 2003-11-05 Electric toothbrush and corresponding toothbrush head

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10252752.0 2002-11-13
DE2002152752 DE10252752B4 (de) 2002-11-13 2002-11-13 Elektrische Zahnbürste sowie Zahnbürstenkopf hierfür

Publications (1)

Publication Number Publication Date
WO2004043284A1 true WO2004043284A1 (fr) 2004-05-27

Family

ID=32240002

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/012308 WO2004043284A1 (fr) 2002-11-13 2003-11-05 Brosse a dents electrique et tete de brosse a dents correspondante

Country Status (3)

Country Link
AU (1) AU2003293656A1 (fr)
DE (1) DE10252752B4 (fr)
WO (1) WO2004043284A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109890322A (zh) * 2017-05-26 2019-06-14 科富创新有限公司 具有随机运动的刷毛的电动牙刷

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504959A (en) * 1994-03-24 1996-04-09 Matsushita Electric Works, Ltd. Electric toothbrush
DE19603851A1 (de) * 1996-02-05 1997-08-07 Finalpina Ag Elektrische Zahnbürste
EP1093770A2 (fr) * 1999-10-22 2001-04-25 The Gillette Company Tête de brosse pour brosse à dents
DE10211391A1 (de) * 2002-03-15 2003-10-02 Braun Gmbh Elektrische Zahnbürste und Zahnbürstenkopf hierfür

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5524312A (en) * 1995-03-06 1996-06-11 Tan; Kuo-Ching Electric toothbrush
DE19627752A1 (de) * 1996-07-10 1998-01-15 Braun Ag Elektrische Zahnbürste
DE19802904A1 (de) * 1998-01-27 1999-07-29 Finalpina Ag Elektrische Zahnbürste
DE29924223U1 (de) * 1998-09-30 2002-06-06 The Procter & Gamble Company, Cincinnati, Ohio Elektrische Zahnbürste
US6836917B2 (en) * 2001-05-07 2005-01-04 The Procter & Gamble Company Replaceable head electric toothbrush and connection structure therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5504959A (en) * 1994-03-24 1996-04-09 Matsushita Electric Works, Ltd. Electric toothbrush
DE19603851A1 (de) * 1996-02-05 1997-08-07 Finalpina Ag Elektrische Zahnbürste
EP1093770A2 (fr) * 1999-10-22 2001-04-25 The Gillette Company Tête de brosse pour brosse à dents
DE10211391A1 (de) * 2002-03-15 2003-10-02 Braun Gmbh Elektrische Zahnbürste und Zahnbürstenkopf hierfür

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109890322A (zh) * 2017-05-26 2019-06-14 科富创新有限公司 具有随机运动的刷毛的电动牙刷
CN109890322B (zh) * 2017-05-26 2021-04-30 科富创新有限公司 具有随机运动的刷毛的电动牙刷

Also Published As

Publication number Publication date
AU2003293656A1 (en) 2004-06-03
DE10252752B4 (de) 2006-05-04
DE10252752A1 (de) 2004-06-03

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