EP1836923A1 - Brosse brosse à dents avec un manche à facettes - Google Patents

Brosse brosse à dents avec un manche à facettes Download PDF

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Publication number
EP1836923A1
EP1836923A1 EP06006099A EP06006099A EP1836923A1 EP 1836923 A1 EP1836923 A1 EP 1836923A1 EP 06006099 A EP06006099 A EP 06006099A EP 06006099 A EP06006099 A EP 06006099A EP 1836923 A1 EP1836923 A1 EP 1836923A1
Authority
EP
European Patent Office
Prior art keywords
handle
surface elements
toothbrush
toothbrush according
elements
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.)
Granted
Application number
EP06006099A
Other languages
German (de)
English (en)
Other versions
EP1836923B1 (fr
Inventor
Peter Gross
Martin Zwimpfer
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.)
Trisa Holding AG
Original Assignee
Trisa Holding AG
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 Trisa Holding AG filed Critical Trisa Holding AG
Priority to AT06006099T priority Critical patent/ATE509546T1/de
Priority to EP06006099A priority patent/EP1836923B1/fr
Priority to PCT/EP2007/002610 priority patent/WO2007110208A1/fr
Priority to EP07723558A priority patent/EP1998643A1/fr
Priority to US12/225,121 priority patent/US8448284B2/en
Publication of EP1836923A1 publication Critical patent/EP1836923A1/fr
Application granted granted Critical
Publication of EP1836923B1 publication Critical patent/EP1836923B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0055—Brushes combined with other articles normally separate from the brushing process, e.g. combs, razors, mirrors
    • A46B15/0081—Brushes with a scraper, e.g. tongue scraper
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B15/00—Other brushes; Brushes with additional arrangements
    • A46B15/0087—Brushes with decoration on or in the handle
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • A46B5/026—Grips or handles having a nonslip section
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/10—For human or animal care
    • A46B2200/1066—Toothbrush for cleaning the teeth or dentures

Definitions

  • the present invention relates to a toothbrush according to the preamble of patent claim 1.
  • Toothbrushes are well-known items for cleaning the oral cavity, especially the teeth and the tongue, and serve oral hygiene in this sense.
  • a toothbrush is for example in the patent specification US 2,130,661 described.
  • the toothbrush is equipped with an elongate handle, a neck adjoining the handle in the longitudinal direction and a head adjoining the handle at the neck.
  • the head is occupied on one side with bristles.
  • the surface of the handle has trapezoidal surface elements in three longitudinal sections which adjoin one another in each case.
  • the circumferentially adjacent surface elements of a longitudinal section are arranged rotationally symmetrical with respect to the longitudinal axis of the handle and form in a cross section perpendicular to the longitudinal axis of the handle regular octagons. Starting from the free end of the handle in the direction of the head, the cross section of the handle initially tapers and then expands again to a thumb rest, to then rejuvenate to the neck again.
  • the object of the present invention is to provide a toothbrush with an ergonomically particularly advantageous handle for a convenient, cleaning-supporting handling of the toothbrush.
  • the present subject matter has an elongated handle, a neck adjoining on one side and a head arranged on the neck opposite the handle.
  • at least a portion of the surface of the handle is provided with a plurality of at least approximately planar surface elements.
  • the surface elements are each arranged adjacent to each other and border directly to each other to form element edges.
  • the surface elements are arranged facet-like on the surface, whereby a substantially rounded handle shape is at least approximately simulated.
  • the element edges thereby form a network-like surface structure on the handle.
  • the surface of the handle, in addition to portions having at least approximately planar surface elements also have continuous-smooth surface portions.
  • the rounded handle shape represents an ergonomically advantageous adaptation to the likewise roundish curved palm of the user and prevents the formation of pressure points.
  • the many flat surface elements form a plurality of bearing surfaces for the hand, so that a comfortable use of the toothbrush in different rotational positions with respect to its longitudinal axis is ensured. This in turn supports a different rotary positions requiring, circular cleaning movement for gentle and thorough cleaning of the teeth.
  • the element edges cause the use of the toothbrush on the one hand formation of lines of contact with the palm and on the other hand of free space between the handle surface and the palm, so that a drainage of liquids between the palm and the handle surface is promoted. In this way, the risk of slipping of the hand is reduced by the toothbrush and thus allows a safer handling.
  • adjoining element edges can form a continuous edge line, which wraps around the handle in the surface section formed by the surface elements.
  • the edge line is at least partially spirally formed.
  • the grip surface formed by the surface elements allows optimal grip for both right and left-handers, as well as for larger and smaller hands. During cleaning, the user is offered changing grip holding positions with the same level of comfort. Due to the large number of bearing surfaces formed by the surface elements a large number of secure grip holding position is possible.
  • the toothbrush according to the invention thus offers optimized and comfortable handling in different rotational positions of the toothbrush for different users with an ergonomically rounded handle shape and an advantageous discharge system for fluids that have entered between the surface of the handle and the palm of the hand.
  • the previously mentioned continuous-smooth surface sections are preferably used where the haptics and the friction between the surface and the palm of the hand play a minor role.
  • the brush neck can preferably be configured continuously smooth.
  • additional active light sources such as light emitting diodes (LED: light emitting diode) or incandescent bulbs
  • LED light emitting diode
  • the plurality of surface elements, as well as inner surfaces or surfaces, can serve to divert the generated light by reflection and refraction to specific locations. The user can thus visually display important elements and locations on the toothbrush. (e.g., active cleaning zones in the head, key holding zones on the handle, tongue cleaning elements, etc.).
  • the handle may be partially hollow. Internal surfaces of this cavity may have surface portions, which are also formed by planar surface elements. To the To optimize reflection and refraction in this area, the cavity or its surfaces can be designed as a so-called "cat's eye” to generate back reflections. Such a retroreflective zone may be provided in the head and / or handle.
  • the inventive toothbrush 10 shown in FIG. 1 has a head 12, also referred to as a treatment head, which is intended to carry bristles 14 (not shown in FIG. 1), a neck 16 adjoining the head 12, and a neck 16 opposite one another the head 12 arranged elongated handle 18.
  • the illustration in FIG. 1 shows the upper side 20 of the toothbrush 10 intended for carrying bristles 14.
  • An underside 22 of the toothbrush 10 shown in FIG. 1 opposite the upper side 20 is shown in FIG.
  • the neck 16 and the head 12 have a continuously smooth surface.
  • the toothbrush 10 shown in FIGS. 1 to 3 is preferably symmetrical with respect to its longitudinal center plane 24, which is perpendicular to the top 20 and bottom 22, formed. Laterally, the toothbrush 10 is bounded by two, preferably mirror-symmetrical side surfaces 26, one of which is shown in the side view of Fig. 2.
  • a portion of the surface of the handle 18 is faceted with a plurality of substantially planar surface elements 30.
  • the at least almost planar surface elements 30 are formed both on the surface of an ellipsoid-like handle body 32, which is arranged in the free, enclosed in the use of the palm inner end portion, as well as on a rosette-like recess 34 of a neck formed on the handle 18 thumb rest 36.
  • surface elements 30 are naturally also conceivable on the neck 16 or on the head 12 of the toothbrush 10.
  • the substantially planar surface elements 30 have a triangular base area with a maximum extent of 0.2 mm to 8 mm, preferably from 0.5 mm to 6 mm. They are each arranged so that they immediately adjoin one another and thereby form element edges 38.
  • the surface elements 30 are planar in order to achieve the advantages according to the invention. But they can also be slightly convex or concave curved or bent.
  • the radius of curvature of the surface elements 30 is in this case much larger than the radius of curvature of the approximated by them handle roundings.
  • the surface elements 30 cover the handle body 32 in a faceted arrangement. In this way, they approximate the substantially rounded basic shape of the handle 18. In addition to the ellipsoidal basic shape shown, other oblong-rounded basic shapes, as shown for example in FIG. 8 and FIGS. 13 to 16, can be approximated by the plurality of surface elements 30.
  • the planar surface elements 30 may alternatively have also n-sided, in particular quadrangular, square, rhombic, pentagonal, hexagonal, circular or elliptical or composite of n-cornered, circular or elliptical primitives base surfaces, which may optionally be equipped with re-entrant corners.
  • triangular base surfaces are particularly preferred, which in the facet-like arrangement shown in FIGS. 1 to 3 form a so-called briolette-ground joint arrangement and thereby give the grip body 32 a diamond-like appearance.
  • one element edge 38 of the surface elements 30 is preferably oriented at right angles to the longitudinal axis of the handle 18 in this specific arrangement.
  • the surface elements 30 or the surface structure formed by them are or are preferably made uniform over the entire area formed with them.
  • Surface elements 30 has an equilateral or at least isosceles basic shape.
  • Adjacent element edges 38 form contiguous, extending over the handle 18 edge lines 39. Only by way of illustration in Fig. 2 and 3 provided with the reference numeral 39 edge lines 39 are highlighted by a greater line thickness. Particularly advantageous are at least almost spirally the handle 18 or at least almost in the longitudinal direction of the handle 18 extending edge lines 39th
  • the element edges 38 and the edge lines 39 form in the hand of the user when receiving the handle 18 contact lines that improve the removal of liquids that have come between the hand and the handle 18, and thus promote safe handling of the toothbrush 10.
  • the edge lines 39 may be formed such that they protrude radially relative to adjacent element edges 38 to the outside.
  • special properties can be assigned to them by using special materials, for example a colored soft material.
  • the element edges 38 and edge lines 39 cause their support in the palm, that form smaller cavities between the palm and the handle 18, which promote a drainage of liquids that reach into these spaces.
  • an optical, preferably crystal-like, effect resulting from the facet-like arrangement of the surface elements 30, in particular when using a transparent or translucent material for the handle 18, can attract the attention of a user, improve the recognizability of a specific toothbrush 10 and open up the possibility of the end of a useful life of the toothbrush 10 to the changed optical properties of the handle 18 and the whole toothbrush body, eg due to scratches or scratches.
  • the surface elements 30 are similar to each other regardless of their position on the handle 18. That is, although their extensions and / or angles included by the element edges 38 change depending on the position of the surface elements 30 along the longitudinal axis of the handle 18 and / or the handle circumference length at their respective positions, their basic shape remains preferred the entire handle 18 is substantially preserved. Accordingly, with a circumferentially constant number of surface elements 30, the triangular base surfaces at the tapering in the circumferential length free end portion or neck end portion of the handle body 32 towards smaller than in a central portion of the handle body 32. In general, it is that at a constant Number of surface elements 30, the size of their bases with the shape of the handle 18 scales. The size of the base surfaces is adapted to receive a "uneven" surface of the handle 18 with a corresponding number of associated element edges 38.
  • the ratio of its extent in the longitudinal direction of the handle 18 to the extent in the circumferential direction of the handle 18 is preferably less than 5: 1 for all flat surface elements 30.
  • the circumferential length of the handle 18 varies depending on its cross-sectional shape and extent.
  • the maximum height of the handle 18 between the top 20 and the bottom 22 is 8 mm to 16 mm, preferably 10 mm to 12 mm, the maximum width of the handle 18 at right angles to the longitudinal axis is 12 mm to 21 mm, preferably 15 mm to 18 mm , Generally, the width in this embodiment measures more than the height.
  • the facet-like arrangement of the surface elements 30 for the approximate formation of a voluminous, rounded handle 18 requires a respective angular arrangement of adjacent surface elements 30.
  • the surface normals adjacent surface elements 30 included angle in a relative to the longitudinal axis of the handle 18 middle handle portion is between 1 ° and 30 °, preferably between 1 ° and 15 °. In the free end region of the handle 18, these angles are between 20 ° and 50 °, preferably between 30 ° and 40 °.
  • the angles of the surface normals may vary depending on the specific position of the surface elements 30 on the handle 18 and the approachable handle shape.
  • angles of the surface normals of adjacent surface elements 30 are generally smaller than for smaller radii of curvature of the handle base. This can be seen, for example, in FIG. 5, where a large radius of curvature on the upper side 20 and lower side 22 of the toothbrush 10 requires smaller angles between the surface normals than the comparatively smaller radius of curvature on the side surfaces 26.
  • the angles are approximately 5 [deg.] In a central region, measured in the longitudinal center plane of the grip body 32, and approximately 33 [deg.] In the free end region of the grip body 32.
  • these are slightly rounded between adjacent surface elements 30.
  • Their radius of curvature is less than 0.5 mm, preferably less than 0.1 mm.
  • the handle 18 may include one or more surface portions having faceted arrays of surface elements 30. Preferably, at least a portion is formed from the free end of the handle 18 on the Handle body 32 extends to before the thumb rest 44. Alternatively, at least one substantial part held by the user during use of the toothbrush 10 in the palm of the hand is provided with a faceted arrangement.
  • the handle body 32 extends over about 45% to 65% of the total length of the toothbrush 10, which measures along its longitudinal axis about 120 mm to 230 mm, preferably 190 mm to 200 mm.
  • the longitudinal extent of the section with the facet-like arrangement of surface elements 30 is on the bristle-occupied upper side 20 of the toothbrush 10 measured from the free end of the handle 18 in the direction of the head 12 between 50 mm and 80 mm, preferably between 61 mm to 68 mm.
  • the section On the underside 22, the section has a length of 70 mm to 90 mm, preferably 77 mm to 83 mm.
  • the lateral length of the section is between 65 mm and 85 mm, preferably 73 mm to 79 mm.
  • the free end region of the handle 18 shown in FIGS. 1 to 3 is preferably designed such that the planar surface elements 30 reach as far as the free end of the handle 18.
  • the free end portion of the handle 18 is preferably formed as a rounded dome.
  • the facet-like arrangement of surface elements 30 preferably extends around the entire handle circumference. Alternatively, however, it is also possible that only band-like or smaller areal sections are provided with the facet-like arrangement, as shown, for example, in FIGS. 13 to 15. It is also possible the surface elements 30 in a combination of To arrange bands and surfaces, with multiple bands and / or surfaces can be combined.
  • the handle 18, as well as the inventive toothbrush 10 itself, is preferably manufactured in an injection molding process.
  • the injection molding tools used in this case are preferably designed in two parts and form along their cavity-side contact line on the finished toothbrush 10 a longitudinally extending around the handle 18 and the toothbrush 10 tool cutting line 40.
  • the injection-molding tool halves are preferably designed such that the flat surface elements 30 formed by them do not protrude beyond the tool-parting line 40 or interrupt it. Consequently, element edges 38 extend on the tool parting line 40.
  • these surface elements 30 In order to prevent the surface elements 30, whose element edges 38 form the tool parting line 40, from being damaged or scratched during demolding, these surface elements 30 have a draft angle of at least 1 °, preferably of at least 3 ° one.
  • the surface elements 30 adjacent the mold parting line 40 are either reduced in their base area or adapted in their basic form.
  • the triangular planar surface elements 30 along the mold parting line 40 can each be subdivided into two smaller, likewise triangular surface elements 30. Consequently no actual interruption occurs along the tool parting line 40 in the facet-like arrangement extending over the upper side 20 and lower side 22 of the handle 18.
  • the continuous and in the representation of Fig. 2 in this embodiment straight line shown tool cutting line 40 remains to recognize.
  • the tool parting line 40 may take an arbitrary, three-dimensional course in an alternative embodiment.
  • the adjacent surface elements 30 are adapted accordingly.
  • the tool parting line 40 does not form a "foreign body", but is incorporated into the surface portion as an edge line 39 formed from the element edges 38.
  • the toothbrush 10, preferably made by injection molding as mentioned above, may be made of a hard material and / or a soft material and / or a combination of a hard material and a soft material.
  • a hard material is used.
  • the hard material used is preferably plastics from the group comprising polypropylene (PP), polyester (PET), polyethylene (PE), polystyrene (PS), styrene-acrylonitrile (SAN), polyoxymethylene (POM), polymethylmethacrylate (PMMA), acrylobutadiene-styrene (ABS) etc. , preferably SAN, PS or PET.
  • transparent or translucent embodiments of the materials are preferably used in order to effect special optical effects in conjunction with a specific arrangement of surface elements 30.
  • the transparent or translucent materials have a refractive index of 0.4 to 2.5, preferably 0.5 to 2 or a Light transmission according to standard ASTM D1003 from 80% to 98%, preferably from 85% to 95%.
  • the hard material preferably forms a basic structure of the toothbrush 10, to which the soft materials are injected.
  • soft materials for example, low density polyethylene (PE-LD), high density polyethylene (PE-HD), polyethylene (PE), rubber-elastic materials such as polyurethane (PUR), thermoplastic elastomers (TPE), etc., preferably a thermoplastic elastomer (TPE ) used.
  • Soft materials are used in particular to improve the feel, for example in the area of the thumb rest 36 and the grip body 32, for example in the area elements 30 and / or in the area of the element edges 38. In addition, they find application in the area of the head 12 for damping of mechanical shocks during application of the toothbrush 10 in the oral cavity or in cleaning or massage elements (see reference numeral 41 in Fig. 32 and Fig. 33). Soft materials can also be used in all areas of the toothbrush 10 for forming decorative or additional haptic elements.
  • the surfaces of the surface elements 30 can be formed from hard and / or soft material. In order to achieve an optimum holding effect, at least a part of the surface elements 30 are polished.
  • individual surface elements 30 or portions of the handle surface with surface elements 30 consisting of Hard material of surface portions of soft material, which preferably form a continuous-smooth surface surrounded.
  • surface elements 30 are surrounded by soft material of continuously smooth surface portions of hard material.
  • the bristles 14 shown for example in Figures 15, 26 and 27 are preferably made of polyamide (PA) or polyester (PBT). They may be supplemented in the bristle field with rubber-elastic cleaning or massage elements 41 (see FIGS. 32 and 33) of one of the abovementioned soft materials.
  • the bristles 14 preferably have a round cross-section, which is at least approximately constant over their entire length in the case of cylindrical bristles 14A, or they may be formed as pointed bristles 14B with a cross-section decreasing towards their free end. The diameter of the pointed bristles 14B decreases substantially over the free 8 mm to the bristle end linearly.
  • individual surface elements 30 or element edges 38 can be equipped with different surface roughnesses.
  • a metal such as nickel, chromium, silver or gold.
  • other methods for metallic coating can be used, such as an embossing by means of metallic transfer film.
  • the metallic coated surface is preferably applied to a continuous, smooth surface portion on the opposite handle side of a surface portion provided with surface elements 30.
  • the area of refinement or the change in the surface roughness has, in the area of the element edges 38, a width of between 0.05 mm and 1 mm, preferably between 0.1 mm and 0.5 mm, symmetrically to the edge.
  • a tapered front grip part 42 having a smooth surface is formed between the handle body 32 and the thumb rest 36.
  • the transition between the front handle portion 42 and the handle body 32 may, discontinuously, as shown in the figures, or alternatively continuously respectively.
  • the surface of the front grip part 42 may also be equipped with planar surface elements 30, so that the facet-like surface of the grip extends directly in front of the thumb rest 36. It is also possible to expand the facet-like arrangement so far that it encloses the thumb support surface 44.
  • the thumb rest 36 on the upper side 20 of the toothbrush 10 has a rosette-like depression 34.
  • the flat surface elements 30 formed in the rosette-like depression 34 may be similar, similar or different from the surface elements 30 of the grip body 32.
  • the rosette-like depression 34 is surrounded by an elliptical, continuously smooth thumb support surface 44.
  • the projected on the top 20 length of the major axis of the elliptical thumb support surface 44 is between 16 mm and 23 mm, preferably between 18 mm and 21 mm.
  • the length of the minor axis projected onto the upper side 20 is between 8 mm and 15 mm, preferably between 10.5 mm and 13.5 mm.
  • a preferably flat decorative surface 46 is formed, which preferably has the same dimensions as the thumb rest surface 44.
  • the decorative surface 46 is preferably at least partially with a flat decorative element 47, for example, a color foil, image film, metal foil, a representation by pad printing or screen printing, a label, an adhesive image, etc. equipped.
  • the decorative element 47 may, for example, a gold or silver coating or a different colored hard and / or soft material which is injection-molded during injection molding.
  • the recess in this case has a depth of 0.1 mm to 1 mm, preferably from 0.3 mm to 0.7 mm.
  • the flat decorative surface 46 on the underside 22 of the toothbrush 10 is preferably provided with a flat circular or oval colored element.
  • the circular element has a diameter of 7 mm to 12.5 mm, but preferably from 8.5 mm to 11 mm. Further, it is possible for the decorative element 47 to use similar shapes as for the surface elements 30 on the handle 18 or in the rosette-like recess 34.
  • an annular decoration which surrounds the depression or the depressions can be applied to the upper side 20 as well as on the underside 22.
  • the width of this ring is, measured radially, between 0.1 mm and 2 mm, preferably 0.1 mm to 1.5 mm.
  • Parts of the elliptical thumb support surface 44, the rosette-like depression 34, the decorative surface 46 or even individual surface elements 30 may on the one hand be provided with a particularly low roughness or with a higher, previously specified roughness.
  • the thumb support surface 44 and the decorative surface 46 there is preferably a larger area surrounding the longitudinal axis of the handle 18 with a higher roughness. With respect to the tool parting line 40, this range measures between 11 mm and 22 mm, preferably 14 mm to 19 mm, while the thumb support surface 44 and the decor surface 46 are surrounded by a width of 0.3 mm to 3 mm, preferably 0.4 mm to 2.5 mm, from this region are.
  • a recess 34 is formed on the underside 22 similar to the recess 34.
  • a preferably similar recess 34 is located on both sides, which are arranged symmetrically to each other, whereby the distance between their respective lowest points is minimized.
  • the handle 18 is preferably a stamping or labeling surface.
  • the embossing or labeling surface is preferably attached to the smooth surface on the bottom 22 or the top 20 of the front handle portion 42.
  • Embossing or inscription can be done by embossing, image foil stamping or printing (pad printing or screen printing).
  • the embossing is preferably a silver foil applied. It is also possible to apply gold or other metal foils, color foils, picture films or a label.
  • the embossing or inscription can also be designed, for example, as a positively or negatively designed form integrated in the surface of the handle 18.
  • a positive design of the mold requires a sunken surface from which the mold protrudes.
  • a negative form is deepened according to its form.
  • the depth of the field or the lettering is between 0.1 mm and 1 mm, preferably between 0.2 mm and 0.5 mm. In both cases, the formation of the lettering is already implemented in the injection mold, which requires no additional processing steps.
  • one or more, preferably one, larger, continuously smooth, flat partial surface or partial surfaces may be configured in order to realize the embossing or lettering. If an application of the label by means of the above method is not possible, decorative elements can be glued.
  • one or more island-like surface sections (also briefly islands) with a continuously smooth surface can be provided in a surface section equipped with surface elements 30.
  • the length of the embossing surface in the longitudinal axis direction of the handle 18 is 17 mm to 25 mm, preferably 19 mm to 23 mm.
  • the width, perpendicular to the length is 1.5 mm to 7 mm, preferably 3 mm to 5 mm.
  • the free end of the handle 18 facing side of the embossing surface has from free end a distance of 55 mm to 85 mm, preferably from 65 mm to 75 mm.
  • the embossing or the inscription through the handle 18 is at least approximately visible. Due to specific arrangements of surface elements 30, an observer may see an apparent distortion, enlargement or reduction of the embossing due to optical reflections and refractions. The reflections may particularly preferably lead to an optical multiplication of the labels or other optical elements.
  • cutting lines 48 of a longitudinal section have a concave-convex course, at least in sections, due to the handle 18 provided with planar surface elements 30.
  • the longitudinal axis of the handle 18 is in the selected longitudinal sectional plane.
  • the concavo-convex course repeats periodically.
  • FIG. 5 shows a cross section through the grip body 32 of the toothbrush 10 shown in FIGS. 1 to 4.
  • the cross section has an elliptically rounded basic shape which is approximated by the straight cut lines 48 of twelve planar surface elements 30. In each case, radially outward from the cutting lines 48, further element edges 38 are visible in the direction of view of FIG. 5.
  • the surface elements 30 have isosceles triangular base surfaces possess, which lie in the direction behind the cutting surface element edges 38 each triangular points 49, which are centrally visible with respect to the truncated surface elements 30.
  • the handle 18 may additionally be provided with a cavity which is formed during manufacture, for example by means of a mold core or a lid member.
  • the surface lying in the cavity may also be at least partially equipped with surface elements 30, in this case internal.
  • FIG. 6 shows a further cross section through the toothbrush 10 according to the invention shown in FIGS. 1 to 5.
  • the sectional plane runs through the center of the rosette-like recess 34 of the thumb rest 36 perpendicular to the longitudinal axis of the handle 18.
  • the rosette-like recess 34 is in Fig. 7 shown as an enlarged section.
  • the filled with material part of the handle 18 is shown hatched.
  • the recess 34 forms a comfortable receptacle for the thumb of the user.
  • the surface of the rosette-like depression 34 is likewise formed by surface elements 30.
  • the position of the recess 34 on the handle 18 encourages the user to take the toothbrush 10 in a particularly advantageous manner and optimally perform cleaning technology.
  • the rosette-like recess 34 may also be provided with different concave and / or convex surface elements.
  • the rosette-like recess 34 is arranged on the toothbrush 10 so that it from the free end of the toothbrush 10th between 50 mm and 140 mm, preferably 95 mm to 115 mm.
  • the remaining material thickness of the handle 18 between the lowest point of the rosette-like recess 34 and the opposite bottom 22 is 4 mm to 8 mm, preferably 5.5 mm to 7 mm.
  • FIG. 7 shows a plan view of the rosette-like depression 34 which is hereby isolated.
  • the flat surface elements 30 of the rosette-like depression 34 have triangular, quadrilateral and pentagonal base surfaces which have a certain similarity to the planar surface elements 30 of the associated grip body 32 shown in FIGS. 1 to 3.
  • similar base surfaces in particular triangular surfaces, are preferably formed. In this way, a viewer is given the impression of an overall diamond-like design.
  • a handle body 32 is shown in FIG. 8.
  • the handle body 32 is provided near its free end region with a circumferential handle body taper 50, which gives the free end region of the handle body 32 a nearly spherical shape.
  • a circumferential handle body taper 50 which gives the free end region of the handle body 32 a nearly spherical shape.
  • other simple or composite, but preferably rounded basic shapes, such as cones, cylinders, spheres, ellipsoids, etc. may be approximated by the surface elements 30.
  • This makes it possible to form in the handle 18 along its longitudinal axis different concave and / or convex areas.
  • concave and / or convex portions may be isolated at certain positions or circumferentially disposed about the longitudinal axis of the handle 18.
  • the flat surface elements 30 can also have elliptical base surfaces. Two such embodiments are shown in fragmentary form in FIGS. 9 and 10.
  • the centers of adjacent elliptical surface elements 30 are each arranged in rows at right angles to the longitudinal axis of the handle 18. They form a composite of 3 times 5 not offset from each other, elliptical surface elements 30.
  • This dislocation-free composite is surrounded by elliptical surface elements 30, which in contrast are arranged offset from one another.
  • all elliptical surface elements 30 are offset from each other.
  • the surface elements 30 may also be disposed on the handle 18 as a whole without dislocation.
  • the use of rounded, for example elliptical, base surfaces is in addition to the dominant, convexly shaped surface elements 30 also so-called minor complementary surface elements 52 formed.
  • These complementary surface elements 52 fill the space between adjacent similar or similar convex surface elements 30 and generally have concave bases.
  • the base surfaces of the complementary surface elements 52 can alternatively also be spatially curved.
  • various combinations of several types of surface elements 30 and complementary surface elements 52 are conceivable.
  • surface elements 30 of the same type repeat with a certain symmetry.
  • planar surface elements 30 may extend over various portions of the toothbrush 10 and handle 18, respectively, forming so-called open junctions 53A, as shown in FIG. 11, or closed junctions 53B, as shown in FIG. 12, for surrounding surface design .
  • open junctions 53A as shown in FIG. 11, or closed junctions 53B, as shown in FIG. 12, for surrounding surface design
  • closed transition 53A the facet-like arrangements of the surface elements 30 are bounded by a continuous, preferably by a circumferential circumferential line 54.
  • 53B are at an open transition Circumferential lines 54 formed as discontinuous, for example jagged boundaries of a surface portion, with individual or groups of surface elements 30 extend into the differently shaped surface sections.
  • FIGS. 16 and 17 The sectional view for the toothbrush 10 shown in FIGS. 13 to 15 results in a kidney-shaped rounded cross-sectional area. Also possible are crescent-shaped rounded cross-sectional areas, as shown in FIG. 17.
  • the underside 22, which is preferably not provided with planar surface elements 30, can be used for attaching decorative elements and / or embossings or lettering.
  • the handle 18 optical distortions, multiplications, reductions or enlargements of the decorative elements and / or embossings or the like can occur to the observer because of the concave or substantially concave surface on the upper side 20 or substantially flat surface. Labels are effected.
  • decorative elements 47 of the toothbrush 10 can be formed both flat and voluminous. Examples of arranged in the region of the handle 18 and the neck 16 voluminous decorative elements 47, which resume basic shapes of surface elements 30 of the handle 18, are shown in FIGS. 18 to 23. In particular, triangular or crystalline hexagonal basic shapes are used.
  • the decorative elements 47 may be arched out or embossed or recessed. They may also be arranged symmetrically with respect to a longitudinal center plane 24, as shown in FIGS. 18 to 22, or asymmetrically with respect to the longitudinal center plane 24, as shown in FIG. 23. In particular, by recess-like decor elements 47, as shown for example in Fig. 18 or 21, or protruding decorative elements 47, as shown for example in Fig. 20 or Fig. 23, elastic properties of the toothbrush 10 can be influenced.
  • Projecting decorative elements 47 can serve a better support of the user's hand on the handle 18.
  • the surface is additionally structured, thus reducing the risk of individual fingers or the user's hand slipping off the toothbrush 10.
  • the decorative elements 47 may form channels 55 to discharge fluids between the toothbrush 10 and the user's hand or fingers, and thereby also the risk of slipping to diminish.
  • the decorative elements 47 have the same or similar shapes as the surface elements 30, which are already arranged on the handle 18 on. They represent additional reference points for guiding the toothbrush 10.
  • the decorative elements 47 are preferably placed in the middle and / or in the head-side front third of the toothbrush 10.
  • the decorative elements 47 are formed from a hard and / or a soft material or a combination of hard and soft materials.
  • decorative elements 47 which can be formed, for example, from soft materials, are provided with the reference symbol "56". It is also possible to embed individual voluminous, protruding decorative elements 47 made of hard material into a surface of continuously smooth soft material.
  • the inventive toothbrush 10 is optionally equipped on the underside 22 of the head 12 with a tongue cleaner 57.
  • tongue cleaner 57 In a scraping movement of resting on the tongue to be cleaned tongue cleaner 57 causes the interaction between edges of the tongue cleaner 57 with the tongue to be cleaned a cleaning effect.
  • the tongue cleaner 57 may be formed, for example, with a rough surface structure or with protruding tongue-cleaning elements 58, as shown in FIGS. 24 and 25.
  • the tongue cleaner 57 is formed of hard or soft material or a combination of hard and soft material. Within a tongue cleaner area, the various tongue cleaner elements 58 may be formed of different materials / material combinations.
  • the tongue cleaning elements 58 shown in Fig. 24 are elevations with a hexagonal base, which are arranged regularly on the bottom 22 of the head 12.
  • the protruding height of the tongue cleaning elements 58 is 0.1 mm to 0.5 mm, preferably 0.2 mm to 0.4 mm.
  • the height of the tongue cleaning elements 58 can on a toothbrush 10th be the same or vary between individual tongue cleaner elements 58. It is also possible to use different base areas for the tongue cleaning elements 58 and / or to arrange the tongue cleaning elements 58 irregularly on the underside 22 of the head 12.
  • the base surfaces of the tongue cleaning elements 58 are preferably similar to the base surfaces of the surface elements 30 formed on the handle 18, the size of which may vary from one another.
  • the tongue cleaning elements 58 are preferably arranged like a ribbon or flat. A combination of several such bands and / or surfaces is also possible.
  • the decorative elements 47 shown in FIGS. 18-23 can also be arranged on the underside 22 of the head 12. The user is thus already given a corresponding feeling when touching the handle 12 by hand, which he can expect when cleaning the tongue.
  • the tongue cleaning elements 58 are arranged like ribs at nearly equal distances transversely to the longitudinal direction of the head 12 on the underside 22. They have a nearly C-shaped base, which is composed of n-angular elements. The C-shaped base is open in the direction of the neck 16. The free, protruding from the head 12 end portions of the tongue cleaning elements 58 form edges, which - as already mentioned - cause the tongue cleaning.
  • the individual rib-like tongue cleaning elements 58 are similar in shape to each other, but differ in their size.
  • FIGS. 26 and 27 show two embodiments of the upper side 20 of the head 12.
  • the bristles 14 shown here are preferably cylindrical and / or tapered on one side and / or pointed on both sides. As already mentioned, they can be combined in a bristle field with cleaning or massage elements 41.
  • the head 12 is provided with bristle holes 60.
  • the bristle holes 60 have a diameter of 1 mm to 2 mm, preferably 1.4 mm to 1.8 mm and have a depth of 2.5 mm to 4.5 mm, preferably from 3 mm to 4 mm.
  • the bristling of the head 12 is preferably carried out by means of conventional punching using anchor plates, but can also be carried out by means of an AFT (Anchor Free Tufting) or IMT (In-Mold Tufting) method. When using the latter two methods, it is possible to produce flat bristle bundles.
  • AFT Anchor Free Tufting
  • IMT In-Mold Tufting
  • bristles 14B which are sharpened on both sides are preferably used exclusively.
  • the bristle holes 60 are arranged such that never more than two centers of bristle holes 60 lie on a straight line.
  • the head 12 has a substantially rhombic basic shape with rounded corners.
  • a group of 8 bristle bundles is designed as a stepped group, while the bristle bundles in the neck area in their Arrangement of the outer contour of the head 12 are adapted.
  • bristle bundles preferably 32 to 34 Bostenbündel attached.
  • the head 12 shown in Fig. 26 has a thickness of 3 mm to 7 mm, preferably 4 mm to 6 mm.
  • the maximum width of the head 12 is 9 mm to 17 mm, preferably 12 mm to 14 mm.
  • the length of the bristle field along the longitudinal axis of the head 12 is 13 mm to 26 mm, preferably 20 mm to 25 mm.
  • bristle bundles with purely cylindrical bristles 14A (colored black in the illustration), which stand together in a group of six and four, are surrounded by further bristle bundles with pointed bristles 14B.
  • the cylindrical bristles 14A are intended for surface cleaning in the oral cavity, while the sharpened bristles 14B are intended in particular for cleaning interdental spaces.
  • the height of the bristles 14 above the head 12 is 7 mm to 12 mm, preferably 8.5 mm to 9.5 mm for the cylindrical bristles 14A, and 8 mm to 14 mm, preferably 10.5 mm to 12, in the case of the pointed bristles 14B , 5 mm.
  • the diameter of the pointed bristles 14B decreases to about 8 mm towards the free end thereof. Over the remaining length to the head 12, the bristles 14B have a substantially constant diameter.
  • FIGS. 28 to 34 Two further embodiments of toothbrushes 10 are shown in FIGS. 28 to 34. They partially have a faceted arrangement of surface elements 30 on the handle 18 and are equipped with a tongue cleaner 57, as previously described.
  • the toothbrush 10 illustrated in FIGS. 28 to 31 has approximately square surface elements 30 in the free end region of the handle 18, wherein the element edges 38 extending in the longitudinal direction of the handle 18 coincide with the tool cutting line 40.
  • the toothbrush 10 shown is preferably made of three plastic components, wherein the handle body 32 with the surface elements 30 is preferably made of a transparent, a semi-transparent or a translucent hard material, preferably polypropylene PP.
  • the surface of the handle 18 is essentially formed by a soft material.
  • the corresponding areas are provided with the reference numeral "62".
  • a rosette or crystal-like elevation 64 is arranged as a decorative element 47 in the free end region of the handle 18 and preferably also formed from the soft material of the surrounding area 62.
  • the bristling of this embodiment of a toothbrush 10 according to the invention is preferably carried out by means of the mentioned AFT method.
  • FIGS. 32 to 34 show a similar embodiment to the embodiment shown in FIGS. 28 to 31.
  • the main body of the toothbrush 10 as well as the elevation 64, are made of a transparent hard material, preferably of SAN, PS, ABS or PET.
  • On the top 20 and the bottom 22 are again areas 62 formed of a soft material.
  • the bristles of this embodiment is carried out in the conventional punching process by means of anchor plates.
  • the two embodiments shown in FIGS. 28 to 34 are also equipped in the head area with further rosette-like or crystal-like elevations 64. They rise both on the top 20, where they interrupt the bristle field, as well as on the bottom 22.
  • the protrusions 64 on the top 20 and bottom 22 directly over each other and form a monolithic enclosure of a transparent or translucent material.
  • the remaining area on this side is preferably coated with a layer of soft material.
  • cleaning or massage elements 41 made of soft material may be arranged (see FIGS. 32 and 33).
  • a tongue cleaner 57 made of hard and / or soft material is formed in each case.
  • the tongue cleaner 57 may be provided with decorative elements 47, such as previously described with a crystal-like elevation 64.
  • handles 18 with surface elements 30 may be used in addition to the use of a manual or electric toothbrush 10 alternatively hair brushes, mascara brushes, powder brushes, cosmetic brushes in the general sense, wet razors and other personal care and oral hygiene devices, which with a treatment head are equipped to be used. Use is also possible with household brushes, such as wipers or wiper blades.
  • the handle 18 in addition to a design of the handle 18 as a solid body also an embodiment as a hollow body is possible.
  • the material used in this case is preferably transparent, allowing a view into the cavity, optionally under optical distortions.
  • the cavity preferably located in the interior of the handle 18 for receiving electronic and / or mechanical elements, such as batteries and drive systems for conventional electric toothbrushes or vibrating or sonic toothbrushes serve.
  • the cavity is covered by an additional end cap.
  • the surface elements 30 are also used to achieve optical effects in connection with an active light source inside or outside of the toothbrush 10.
  • the surface elements 30 can serve as reflectors or light distributors.
  • light from an LED in the handle 18 can be directed into the head 12 or from one point in the handle 18 to another.
  • a manual toothbrush 10 with a cavity in the handle 18, which can be used for the accommodation of any elements, such as toothpaste tubes.
  • a toothbrush 10 according to the invention is preferably produced in an injection molding process.
  • the entry of the plastic takes place on the underside 22 of the toothbrush 10 via an injection point in the facet-like arrangement either on a surface element 30 or preferably on an element edge 38.
  • the injection point is 7 mm to 16 mm, preferably 8 mm to 14 mm from the free end of the handle 18 removed on the longitudinal center axis of the toothbrush 10th
  • ejectors For ejecting a hardened toothbrush 10 from an injection molding tool 2 to 4, preferably 2 ejector are arranged on this.
  • the ejectors press the hardened product preferably at smooth, edge-free locations, preferably in the region of the neck 16 and in the region of the tapered front handle portion 42 of the toothbrush 10 from the / the Spritzgusstechnikmaschinemaschinen.
  • the attachment of decorative elements 47 on the toothbrush 10 takes place in a further working step, preferably directly on a spraying or punching machine by injection molding one or more further hard and / or soft materials.

Landscapes

  • Brushes (AREA)
EP06006099A 2006-03-24 2006-03-24 Brosse à dents avec un manche à facettes Active EP1836923B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT06006099T ATE509546T1 (de) 2006-03-24 2006-03-24 Zahnbürste mit facettengriff
EP06006099A EP1836923B1 (fr) 2006-03-24 2006-03-24 Brosse à dents avec un manche à facettes
PCT/EP2007/002610 WO2007110208A1 (fr) 2006-03-24 2007-03-23 Brosse à dents dotée d'une poignée à facettes
EP07723558A EP1998643A1 (fr) 2006-03-24 2007-03-23 Brosse a dents dotee d'une poignee a facettes
US12/225,121 US8448284B2 (en) 2006-03-24 2007-03-23 Toothbrush with faceted handle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06006099A EP1836923B1 (fr) 2006-03-24 2006-03-24 Brosse à dents avec un manche à facettes

Publications (2)

Publication Number Publication Date
EP1836923A1 true EP1836923A1 (fr) 2007-09-26
EP1836923B1 EP1836923B1 (fr) 2011-05-18

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EP06006099A Active EP1836923B1 (fr) 2006-03-24 2006-03-24 Brosse à dents avec un manche à facettes
EP07723558A Withdrawn EP1998643A1 (fr) 2006-03-24 2007-03-23 Brosse a dents dotee d'une poignee a facettes

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Application Number Title Priority Date Filing Date
EP07723558A Withdrawn EP1998643A1 (fr) 2006-03-24 2007-03-23 Brosse a dents dotee d'une poignee a facettes

Country Status (4)

Country Link
US (1) US8448284B2 (fr)
EP (2) EP1836923B1 (fr)
AT (1) ATE509546T1 (fr)
WO (1) WO2007110208A1 (fr)

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Also Published As

Publication number Publication date
EP1836923B1 (fr) 2011-05-18
WO2007110208A1 (fr) 2007-10-04
US8448284B2 (en) 2013-05-28
EP1998643A1 (fr) 2008-12-10
US20090183331A1 (en) 2009-07-23
ATE509546T1 (de) 2011-06-15

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