EP1621105A1 - Brosse a dant avec cavités - Google Patents

Brosse a dant avec cavités Download PDF

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Publication number
EP1621105A1
EP1621105A1 EP04018191A EP04018191A EP1621105A1 EP 1621105 A1 EP1621105 A1 EP 1621105A1 EP 04018191 A EP04018191 A EP 04018191A EP 04018191 A EP04018191 A EP 04018191A EP 1621105 A1 EP1621105 A1 EP 1621105A1
Authority
EP
European Patent Office
Prior art keywords
toothbrush
toothbrush body
recesses
longitudinal
body according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04018191A
Other languages
German (de)
English (en)
Other versions
EP1621105B1 (fr
Inventor
Armin Bärtschi
Beat Huber
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 EP04018191A priority Critical patent/EP1621105B1/fr
Priority to AT04018191T priority patent/ATE433687T1/de
Priority to DE502004009613T priority patent/DE502004009613D1/de
Priority to PCT/EP2005/005858 priority patent/WO2006012938A2/fr
Priority to US11/658,915 priority patent/US8046864B2/en
Publication of EP1621105A1 publication Critical patent/EP1621105A1/fr
Application granted granted Critical
Publication of EP1621105B1 publication Critical patent/EP1621105B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/02—Brush bodies; Handles integral with brushware specially shaped for holding by the hand
    • 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 invention relates to a toothbrush body according to the preamble of claim 1 and a toothbrush according to claim 14.
  • Toothbrushes are well-known items for daily oral hygiene. In general, they are divided into a toothbrush body, consisting of a head part, a neck part and a grip part, and bristles attached to the head part.
  • a toothbrush with a bristle-carrying head part, a neck part and a handle part is described for example in the patent DE-C-4222931.
  • the handle portion has a solid core with spaced-apart ribs which in their entirety form a sufficient gripping surface.
  • the disc-like ribs have an approximately square shape and are enlarged at an end portion of the handle portion adjoining the neck portion to form a thumb rest.
  • a toothbrush having a two-part bristled head portion, a neck portion and a handle portion on which are formed three annular recesses for engaging fingers of a user's hand. These recesses have a decreasing with the distance to the head part diameter.
  • the symmetry axes of the rings lie in a plane which runs parallel to the bristled top of the toothbrush.
  • EP-A-1397976 describes a toothbrush consisting of a head part, a neck part and a grip part, which consists of two oppositely disposed, S-shaped segments consists. These form in the handle part two elongated recesses with lateral openings on two broad sides of the toothbrush.
  • US-A-1860924 discloses a toothbrush whose head portion is provided with a series of grooves extending substantially perpendicular to the longitudinal axis of the toothbrush between bristle tufts.
  • the head part is provided with a central through-hole. Located at the through hole, inclined in the direction of the through hole bristles to assist cleaning of the toothbrush.
  • WO-A-02/15740 a toothbrush with a U-shaped recess on the head part is disclosed.
  • Object of the present invention is to provide a voluminous, ergonomically advantageous, equipped with sufficient stability handle part, the is inexpensive to manufacture with minimal use of materials.
  • the basic idea of the toothbrush body according to the invention or of the toothbrush according to the invention is a toothbrush body on its upper side of a palm support section with at least one longitudinal support strip running along the longitudinal axis of its or its grip part, beside which at least one recess extending from the top to a bottom side is located laterally, equip.
  • the recess may be formed on the one hand in the form of a hole, which is arranged between two longitudinal support strips along the longitudinal axis of the palm support portion of the handle portion, or on the other hand, as a side opening open on a broad side and adjacent to the longitudinal support strip.
  • a voluminous grip part is formed in this way, which requires a lower material usage in comparison to conventional grip parts due to the recesses and is therefore cost-efficient to manufacture.
  • the weight of the toothbrush body is reduced by the recesses and the handle part is given an ergonomically advantageous elasticity.
  • a plurality of holes may be arranged in rows of holes and at least two lateral recesses may be connected by means of a bottom opening on the bottom opening on the underside of the palm rest section and thereby form ribs.
  • ribs may be formed in this way, for example, water or contaminants that accumulate between the hand and the surface of the ribs are efficiently dissipated in the channel-like recesses and slipping of the hand from the handle part is prevented.
  • the ribs are formed by a soft component, whereby an ergonomically shaped, soft-elastic and damping surface is provided on the handle part.
  • the pleasant feel of the handle causes a significantly improved comfort in the use of the toothbrush.
  • the soft-elastic ribs also ensure an improved adaptation of the grip part to different grip positions, for example when brushing different regions of the oral cavity and when used by left-handed or right-handed users.
  • FIGS. 1 to 4 A first variant of a toothbrush body 10 according to the invention is shown in FIGS. 1 to 4.
  • the toothbrush body 10 is composed of three, one after the other along a longitudinal axis 11a extending in its longitudinal axis 11a arranged, in the embodiment shown integrally connected parts, namely a head portion 12, a neck portion 14 and a handle portion 16, together.
  • the handle portion 16 is in turn divided into a thumb support portion 18 and a palm support portion 20.
  • Bristles 22 which project from a bristle receiving side 24 of the head portion 12 and together with the toothbrush body 10 form a toothbrush 26 are shown in FIG.
  • the head part 12 has a length of 20 mm to 40 mm. This corresponds to 10% to 20% of the total length of the toothbrush 26.
  • the slightly curved neck portion 14 extends from the head portion 12 to the handle portion 16 over a length of 20 mm to 60 mm, which is a range of 20% to 30% of the total length of the toothbrush 26 corresponds.
  • the handle portion 16 extends from the neck portion 14 to the free end of the handle portion 16 over a length of 80 mm to 120 mm, ie 40% to 60% of the total length of the toothbrush 26.
  • the thumb rest portion 18 and the palm support portion 20 have a length of 20 mm 60 mm or from 60 mm to 120 mm.
  • the thickness of the toothbrush body 10 measures 5 mm to 15 mm perpendicular to the longitudinal axis 11a.
  • the thickness of the palm support portion 20 is larger for ergonomic reasons and is 7 mm to 20 mm. This results in an advantageous Thickness ratio between the thumb rest portion 18 and the palm rest portion 20 of 1.2 to 4.
  • the toothbrush body 10 is bounded by an upper side 28, comprising the bristle receiving side 24, an underside 30 opposite the upper side 28, and two broad sides 32 extending from the upper side 28 to the lower side 30.
  • All embodiments of the toothbrush body 10 described below each have a basic structure 33, which is shown in FIGS. 6 to 10 and in FIGS. 19 to 23, made of a hard component 34 which at least partially carries a soft component 36.
  • the hard component 34 is marked by a crosshatch and the soft component 36 by a simple oblique hatching.
  • embodiments that are made solely from a hard component 34 or a soft component 36 or combinations of a number of hard components 34 and a number of soft components 36 are possible.
  • the palm support portion 20 with nine recesses 37 in the form of through holes 38, which extend from the top 28 to the bottom 30 and thus completely penetrate the handle portion 16 provided.
  • the holes 38 are arranged at regular intervals one behind the other and thereby form a straight row of holes 40.
  • the row of holes 40 is enclosed between two, on the outer surface almost smooth longitudinal support strip 42.
  • the longitudinal support strips 42 extend from Thumb rest portion 18 up to a blunt end portion 44 of the palm support portion 20.
  • the holes 38 have oval cross-sections whose diameter from the center of the palm support portion 20 with respect to the longitudinal axis 11a in both directions with increasing distance from the center.
  • recesses 37 in the palm support section 20 offers a number of advantages, in particular ergonomic advantages, since the hand relieves the toothbrush 26 at certain points and thereby ensures better circulation of the palm, and hygienic benefits by water, especially contaminated with bacteria or food residues, can be better removed from the handle portion 16 during a cleaning and subsequent cleaning process, which in turn increases the grip of the toothbrush 26.
  • Economical advantages result above all from the fact that the material costs for the hard component 34 and the soft component 36 are reduced due to the lower use of material, and from a process engineering point of view there are advantages in particular in that during the production, which preferably takes place in an injection molding process, preference is given to tools, form the mutually supporting, slightly intermeshing cores are used and therefore no so-called blind holes occur.
  • all the holes 38 extend at right angles through the longitudinal axis 11a.
  • a single Entformungscardi for the mold halves is made possible in this way.
  • other orientations of the holes 38 with respect to the longitudinal axis 11a are possible.
  • slides also a common Entformungscardi is also desirable, so that after hardening as possible, all slides can be pulled out with a single slider mechanism.
  • the ratio of the total volume of all the recesses 37 to the volume of the total surrounding palm support section 20 is less than 2: 1.
  • the holes 38 preferably have a greater extent in a direction perpendicular to the longitudinal axis 11a.
  • a rounding radius is less than 2 mm or the holes 38 have there an opening angle between 10 ° and 45 °.
  • in the soft component 36 wedge-shaped indentations 54 on the broad sides 32 in the Palm support portion 20, oval nubs 56 on the bottom 30 and the top 28 in the thumb rest section 18 and both sides embedded or raised support elements 58 in Boundary formed between the thumb rest portion 18 and palm support portion 20.
  • the indentations 54, nubs 56 and support members 58 serve to impart a secure hold of the toothbrush 26 in the hand of their user and lead with their contours geometric shapes of the recesses 37 on the palm support section 20 also continues.
  • regions on the upper side 28 and the lower side 30 of the cross-sectionally substantially rectangular thumb rest section 18 are formed in the neck part 14. At the broad sides 32 of the neck portion 14, these areas are separated from the hard component 34 by a wavy boundary line 60 as shown in FIG.
  • all regions filled with the soft component 36 are interconnected by channels, such as a neck channel 45 (see FIG. 2), in the hard component 34 so that a single injection point for the soft component 36 is sufficient in the manufacturing process.
  • Further recesses 46 in the form of through holes with a similar oval cross section or a similar geometric character, such as the recesses 37 of the palm support portion 20, are smaller in the head part 12 again. In this way, the user is given an affinity between the configuration of the palm support section 20 and the haptic associated with it and the cleaning sensation in the mouth influenced by the further recesses 46.
  • the character of the row of holes 40, 2 to 9, preferably 3 to 6 of the further recesses 46 are formed in the head part 12.
  • the further recesses 46 have a maximum diameter perpendicular to the longitudinal direction of the head part 12 of a maximum of 5 mm. Preferably, however, their longitudinal extent is between 1 mm and 3 mm.
  • the relationship between the Areas of the further recesses 46 on the upper side 28 and the entire surface of the bristle receiving side 24 should be less than 1: 2, preferably less than 1: 3.
  • the further recesses 46 are preferably similar, as the recesses 37 aligned in the palm support portion 20 and thereby allow the same Entformungscardi for the tool halves in the manufacture.
  • the further recesses 46 lead to a, in particular in FIGS. 2 and 4, clearly visible segmentation of the head part 12 in transverse webs 50, on which at least one row of bristles 22 in each case fits.
  • the further recesses 46 are at least partially covered by inclined bristles 22 and bristle bundles 52.
  • inclined bristles 22 and bristle bundles 52 Preferably, so-called X-bundles or Bockbündel be used, in which each adjacent bristles 22 and bristle bundles 52 cross over the middle of another recess 46 or meet.
  • the inclined bristle bundles 52 support an interdental cleaning, which means in particular also a cleaning of the interdental spaces.
  • the bristles 22 of the X-bundles are longer than bristles 22 protruding at least approximately at right angles from the bristle receiving side 24 and can protrude beyond the surrounding bristles 22.
  • the further recesses 46 in the head portion 12 allow a better flushing of the bristles 22 when cleaning the toothbrush 26 after use, as well as a variety of additional functions, such as the support of a tongue cleaning and massage of the oral cavity and gum.
  • massage and tongue cleaning elements As shown also in Fig. 3 tongue scraper nubs 62, formed from the soft component 36. They are used for tongue cleaning and gum massage.
  • the massage and tongue cleaning elements preferably follow edges of possibly existing further recesses 46 or further borderlines between the soft component 36 and the hard component 34.
  • FIG. 5 shows a cross-section through the toothbrush body 10 shown in FIGS. 1 to 4 along the sectional plane V - V marked in FIG. 4.
  • the cross section through the grip part 16 has a substantially square shape with rounded corners and with one almost rectangular section 64 corresponding to the cut hole 38.
  • the cross section has a symmetry with respect to the longitudinal center plane 11.
  • the cut longitudinal support strips 42 of the upper side 28 and a cut hole wall 48 are marked by their hatching as molded from the hard component 34, the broad side 32 is essentially formed by the soft component 36.
  • FIGS. 6 to 10 show the load-bearing basic structure 33 made of the hard component 34 of the toothbrush body 10 shown in FIGS. 1 to 5.
  • the basic structure 33 is subdivided into a head part element 12a, a neck part element 14a and a handle part element 16a, which in turn comprises a thumb rest element 18a and a palm rest element 20a.
  • the sides delimiting them are also related to the sides of the toothbrush body 10 as a structural top 28a, referred to as structure bottom 30a and as structured broadsides 32a.
  • the base structure 33 has, as shown in particular in FIG. 8, a slightly curved handle plate 47, which at least almost the entire upper side 28 of the palm support portion 20 of the toothbrush body 10, including its head portion 12 facing away from the blunt end portion 44 and the or the longitudinal support strip 42nd , forms. From the hard component 34 are also perforated walls 48 which extend at least approximately at right angles from the underside 30 facing side of the handle plate 47 upstanding to the bottom 30, and podium-like extensions 70, the straight line continuation of the row of holes 40 to the blunt end portion 44 at least almost at right angles from the underside 30 facing side of the handle plate 47 are arranged to projecting almost to the bottom 30, formed.
  • this block-like part of the basic structure 33 allows proper support of the basic structure 33 with the recesses 37 contained therein between the mold halves of the injection molding tool , Less preferred is an embodiment in which the perforated walls 48 are singulated and not interconnected along the longitudinal axis of the palm rest 20a.
  • a problem-free filling of the entire mold cavity with the hard component 34 the extends over the entire length of the toothbrush body 10 to allow and possible so-called sink marks to avoid, in addition to the recesses 37 forming block forming a passage for the first fluid hard component 34 to the neck member 14a and the head part element 12a with a cross section of at least 5 mm 2 , preferably of at least 10 mm 2 used.
  • the thumb rest element 18a is shaped like a bridge between the block-like and therefore stable palm support element 20a and the neck part element 14a, which is formed almost as a solid body.
  • the thumb support element 18a is designed significantly wider with respect to the structure top side 28a or the structure bottom side 30a than with respect to the thickness with respect to the structured broad sides 32a.
  • the thumb rest member 18a is provided on the upper structure side 28a with two rail-like lands 72 curved in parallel along the longitudinal axis of the thumb rest member 18a, slightly curved toward the lower structure side 30a.
  • the webs 72 are used for the lateral stable reception of the soft component 36 which lies above them and, since they can be felt by the soft component 36, allow a precise guidance of the toothbrush 26.
  • the bridge-like design of the thumb support member 18a also ensures sufficient elasticity of the head portion 12 relative to the handle portion 16 and prevents excessive pressure pressure of the gums by the force transmitted to the bristles 22 forces.
  • the basic structure 33 widens from the neck part element 14a, which adjoins the thumb support element 18a, in the manner of a spatula to the rounded head part element 12a.
  • the further recesses 46 and a number of a hole field 74 forming blind holes 76 for receiving bristle bundles 52 are arranged.
  • FIG. 10 shows a section through the palm support element 20a shown in FIG. 9 along the sectional plane X-X marked there.
  • the sectional view shows the areas of the hard component 34 according to FIG. 5.
  • symmetrical cut surfaces of the perforated wall 48 and the grip plate 47 are visible with respect to the longitudinal axis of the cut hole 38.
  • FIGS. 11 to 14 show upper sides 28 of different toothbrush bodies 10 with different geometric shapes of holes 38.
  • further simple geometric basic shapes are complex complex compositions in a continuous or interrupted row of holes 38 in a number of 3 to 30 pieces, but preferably of about 7 to 12 Piece possible.
  • the cross-sectional shapes of the recesses 37 of the palm rest section 20 are changed in size resumed in the head part 12.
  • holes 38 of different basic shapes can also be formed on a toothbrush body 10.
  • Interruptions in rows of holes 38 are particularly suitable for the application of labels.
  • such as in 13 and 14 such an interruption is arranged in a central region of the palm support section 20.
  • the holes 38 shown in Fig. 11 have the shape of a parallelogram 78, the longitudinal sides of which enclose an angle with the longitudinal axis 11a.
  • an arrowhead 80, in FIG. 13 a sickle 82, and in FIG. 14 a triangle 84 is formed as a recurring basic shape arranged in rows of holes 40.
  • the total area of a recess 37 on the upper side 28 is between 10 mm 2 - 200 mm 2 , preferably 20 mm 2 - 50 mm 2 . Due to the size and shape of the individual recesses 37, a trouble-flushing through the holes 38 for cleaning the toothbrush 26 is made possible and at the same time a capillary action for water and impurities excluded.
  • the longitudinal axes of the basic shapes are preferably arranged at right angles to the longitudinal axis 11a.
  • the minimum material thickness between two holes 38 of the palm support section 20 should not fall below 0.3 mm. For reasons of stability, it is preferably 0.8 mm to 3 mm.
  • FIGS. 15 to 18 show further embodiments with oval further recesses 46 in head parts 12.
  • transverse webs 50 consist entirely of the soft component 36 or a combination of the hard component 34 and the soft component 36 and extending from the bristle receiving side 24 on the broad sides 32 to over the bottom 30 of the head portion 12.
  • the segments formed are mutually flexibly deflectable.
  • the flexibility is achieved by a targeted weakening of the hard component 34 between the transverse webs 50 to form hinge-like transition zones. If the material weakening takes place only in the hard component 34, then a minimum material thickness of less than 2 mm, preferably less than 1.5 mm, is recommended. Preferably, however, the material weakening is in a composite region of hard component 34 and soft component 36. Alternatively, however, lateral openings or tunnels may be formed in the transition zones during the production process by means of lateral slides and subsequently filled with the soft component 36.
  • the soft component 36 is slightly offset from the hard component 34 by 0.1 mm to 1 mm in FIG. 15.
  • substantially stepless transitions between the hard component 34 and the soft component 36 may also be formed, effectively preventing accumulation of dirt and water at the junctions.
  • the layer thickness ratio of the soft component 36 to the hard component 34 is preferably less than 1: 3.
  • rubber-elastic cleaning and massage elements 86 formed from the soft component 36 and / or rows of bristles 22 fastened in the blind holes 76 are mounted on the bristle receiving side 24. They may, as shown in Fig. 16 and Fig. 18, sickle-shaped or, as shown in Fig. 17, be pillow-shaped.
  • the cleaning and massage elements 86 or rows of bristles are arranged between the further recesses 46 in the head part 12 and / or between bristle bundles 52. They generally have a greater extent at right angles to the longitudinal axis of the head part 12 than in the direction parallel to this longitudinal axis.
  • the cleaning and massage elements 86 or rows of bristles may substantially at least partially follow edges of the further recesses 46.
  • the distance between the edges of the further recesses 46 and the related cleaning and massage elements 86 or bristle rows is less than 2 mm, preferably less than 1.2 mm.
  • bristle methods are preferred which can produce 52 thin rows of bristles 22 in addition to the classic bristle bundles 52.
  • IMT in-mold tufting
  • AFT anchor free tufting technique
  • bristle carrier plates 88 carrying bristles 22 are mounted on the bristle receiving side 24 of the head portion 12.
  • the bristle carrier plate 88 is a form-fitting tight in a corresponding recess of the head portion 12 and is glued or welded in this, to prevent ingress of water or contaminants in the recess.
  • bundles of bristles 52 manufactured using a conventional stuffing method for a blind hole diameter of less than 1.6 mm can be strung together.
  • FIGS. 19 to 23 show a further embodiment of a basic structure 33 formed from the hard component 34 for a second variant of the toothbrush body 10. It is equipped with an elongate, plate-like handle web 90 which extends along the longitudinal mid-plane 11 in the palm support section 20 between the top 28 and the bottom 30 from the thumb rest section 18 to the blunt end region 44 of the palm rest section 20. At its middle part, the handle web 90 protruding, the underside 30 of the toothbrush body 10 facing stumps 94.
  • the grip web 90 has a thickness of 4 mm to 8 mm measured perpendicular to the longitudinal center plane 11. It tapers on the upper side of the structure and forms the longitudinal support strip 42 on the upper side 28 of the toothbrush body 10 (see FIGS. 24 to 27). Due to the plate-like shape of the handle web 90, the palm support section 20 of the toothbrush body 10 is given a flexibility which depends on the thickness of the handle web 90 so that it is perpendicular to the user Longitudinal center plane 11 can be deflected and the handle part 16 optimally adapts to specific hand shapes of right and left-handers. Flexibility in a direction parallel to the longitudinal center plane 11 is substantially prevented by the height of the grip web 90 of 10 mm to 15 mm.
  • the grip web 90 has three, in the direction of the structure bottom 30a projecting stumps 94.
  • the stumps 94 are used for encapsulation with the soft component 36 for holding the base structure 33 in the mold halves.
  • the thumb rest member 18a is formed substantially perpendicular to the longitudinal center plane 11 substantially oval and tapers waist-like longitudinally in its two end portions.
  • the cross section of the thumb support member 18a thickened along the longitudinal center plane 11 toward its two end regions.
  • FIG. 20 shows a further embodiment of the open neck channel 45 on the underside of the structure 30a.
  • Split-type further recesses 46 are formed on the head part element 12a, as is clearly visible in particular in FIGS. 20 and 22, which will be discussed in detail in connection with the following description of the associated toothbrush body 10.
  • FIG. 23 shows a cross section along the line XXIII-XXIII through the basic structure 33 shown in FIG. 19 to FIG. 22 on the thumb support element 18a. In this case, two oval cut surfaces of the hard component 34, which are spaced from each other by the slot 96, are shown.
  • FIGS. 24 to 27 an embodiment of the toothbrush body 10 which has been completed by applying the soft component 36 to the basic structure 33 shown in FIGS. 19 to 23 is presented.
  • the palm support section 20 it has recesses 37 in the form of lateral recesses 102 which open at the broad side 32 and pass from the upper side 28 to the lower side 30.
  • the recesses 102 border the upper side 28 with the longitudinal support strips 42 formed from the hard component 34 (see FIG. 27).
  • the recesses 102 are continuous from the top 28 to the bottom 30 over a depth of up to 7 mm.
  • two lateral recesses 102 opposite each other with respect to the longitudinal center plane 11 are opened by means of a lower side 30, preferably M-shaped for improved ergonomics corrugated lower recess 103 connected.
  • a plurality of groove-shaped lateral and lower recesses 102, 103 arranged one behind the other in the longitudinal direction of the palm support section 20 form ribs 104 out of the soft component 36, projecting from bottoms 106 of the lateral and lower recesses 102, 103. Edges of the ribs 104 are rounded.
  • the ribs 104 on the broad sides 32 are inclined relative to the longitudinal center plane 11 and enclose an acute angle of preferably 45 ° measured in the direction of the blunt end region 44.
  • the ribs 104 formed from the soft component 36 are laterally flexible and optimally adapt to the user's hand.
  • the width of the ribs 104 measured parallel to the longitudinal axis 11a is 2 mm to 10 mm, preferably 5 mm.
  • the width of the bottoms 106 of the recesses 102 and the lateral spacing of the ribs 104 are smaller than the outer width of the ribs 104 on the broadsides 32.
  • the lateral and lower recesses 102, 103 are circumferentially spaced about 95%, but at least 75% of the radial circumference and interrupted along the longitudinal axis 11a on the upper surface 28 by the longitudinal support strip 42.
  • the lateral and lower recesses 102, 103 form drainage channels through which water can flow from the palm of the hand during the cleaning process.
  • the lateral recesses 102 which are open toward the broad sides 32 are formed during the production process by standing cores of the mold halves which meet substantially in the center of the workpiece.
  • the lateral recesses 102 are also all oriented in a Entformungscardi, so that in the manufacture of the toothbrush body 10 preferably no additional side shifters must be used.
  • the majority of the surface is made of the soft component 36 educated.
  • the volume ratio of the hard component 34 to the soft component 36 in this section is less than 1: 2, preferably about 1: 3.
  • a label may be mounted on the broad side 32 of the thumb rest section 18. It is formed in the manufacturing process by means of running side slides directly during injection molding or in a hot stamping process, which is preferably carried out during the bristling process. Preferably, mold parting surfaces or edges in the labeling field are avoided by displaced slides in this area or staggered mold halves.
  • the head portion 12 each of the broadsides 32 beginning 6 more Recesses 46 in the form of further recesses 105 and thus assumes the geometric character of the palm support portion 20 at.
  • formed lateral head ribs 108 also open at an acute angle with respect to the longitudinal axis of the head portion 12 toward the handle portion 16 back.
  • the opening angle between the individual header ribs 108 may vary.
  • the depth of the further recesses 105 in the head part 12 is less than 5 mm, preferably between 0.3 mm and 3 mm, measured from the broad sides 32 of the head part 12. They do not pass through the longitudinal axis of the head part 12. Similar to the lateral and lower recesses 102, 103 in the palm support section 20, the further recesses 105 and thus also the head section ribs 108 are not formed completely circumferentially. On the underside 30 of the head part 12 they end, as shown in Fig. 25, on a head longitudinal strip 110th
  • each broad side 32 5 header ribs 108 have on the bristle receiving side 24 at least one width, which is sufficient to receive a bristle bundle 52.
  • the head part ribs 108 consist of a combination of the hard component 34 and the soft component 36.
  • the soft component 36 is preferably with a layer thickness between 0.3 mm to 3 mm, preferably about 1 mm, on the bristle receiving side 24 and on the entire underside 30 of the head part 12 is inserted into the head part 12. In this way, an attachment of Dirt prevents in the transition region between the hard component 34 and the soft component 36.
  • the layer of the soft component 36 on the bristle receiving side 24 is slightly raised.
  • the flexibility of the head part ribs 108 can be influenced via the layer thickness of the soft component 36. It is also conceivable, for example, their complete molding with the soft component 36. Alternatively, a profile of layer thicknesses of the soft component 36 may be provided. In this case, for example, the profile could increase towards the outside and thereby increase the flexibility of the head part ribs 108.
  • the bristles 22 are anchored in blind holes 76 of the basic structure 33 and completely penetrate the layer of the soft component 36, respectively.
  • two contiguous, preferably film-like sub-surfaces 112 made of the soft component 36 are formed on the bristle receiving side 24.
  • the soft component 36 is supplied to these areas forming the sub-surfaces 112 by head part channels, not shown, starting from the underside 30 of the head part 12. A material connection via the broad sides 32 of the head part 12 is not necessary.
  • Protruding from and anchored in the sub-surfaces 112 may also be made of the soft component 36 be formed rubber-elastic cleaning and massage elements 86.
  • slides are also used in this embodiment in the production of the further recesses 46 in the head part 12, in the event that the further recesses 46 are angled relative to the grip part 16.
  • the further recesses 46 in the head part 12 and the bristle bundle 52 receiving hole field 74 are preferably designed such that in their preparation, the Entformungscardi the mold halves is substantially equal and thus the same slide mechanism can be used.
  • the bristles 22 or bristle bundles 52 may be aligned obliquely with respect to the further recesses 46, as in previously described embodiments, around the further recesses 46 in the head part 12.
  • massage and tongue cleaning elements such as the tongue scraper nubs 62, may be attached to the underside 30 of the head portion 12, preferably adjacent to or adjacent edges of the further recesses 46 and / or the transverse webs 50.
  • the mold halves Prior to injecting the hard component 34, the mold halves are brought together to form standing cores so as to meet substantially at the center of the mold volume. During the subsequent spraying of the soft component 36, cores and / or slides may only partially be inserted into the hard component 34.
  • toothbrush bodies 10 or toothbrushes 26 prove to be advantageous, in which the recesses 37 and further recesses 46 are similarly oriented in a demoulding direction.
  • the orientation and the arrangement as well as the size and shape of the recesses 37 and the further recesses 46 thereby determine the flexibility of the finished toothbrush 26.
  • the flexibility is also determined by the material composition of the toothbrush 26.
  • the hard component 34 is made, for example, of styrene-acrylonitrile (SAN), polyester (PET), polymethylmethacrylate (PMMA), acrylobutadiene-styrene (ABS), but preferably of polypropylene (PP).
  • SAN styrene-acrylonitrile
  • PET polyester
  • PMMA polymethylmethacrylate
  • ABS acrylobutadiene-styrene
  • PP polypropylene
  • a soft component 36 is a rubber-elastic material such as, polyurethane (PUR), preferably a thermoplastic elastomer (TPE) or a thermoplastic polyurethane (TPU) is used.
  • PUR polyurethane
  • TPE thermoplastic elastomer
  • TPU thermoplastic polyurethane

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EP04018191A 2004-07-31 2004-07-31 Brosse à dents avec cavités Not-in-force EP1621105B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP04018191A EP1621105B1 (fr) 2004-07-31 2004-07-31 Brosse à dents avec cavités
AT04018191T ATE433687T1 (de) 2004-07-31 2004-07-31 Zahnbürste mit ausnehmungen
DE502004009613T DE502004009613D1 (de) 2004-07-31 2004-07-31 Zahnbürste mit Ausnehmungen
PCT/EP2005/005858 WO2006012938A2 (fr) 2004-07-31 2005-06-01 Brosse a dents presentant des evidements
US11/658,915 US8046864B2 (en) 2004-07-31 2005-06-01 Toothbrush with recesses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04018191A EP1621105B1 (fr) 2004-07-31 2004-07-31 Brosse à dents avec cavités

Publications (2)

Publication Number Publication Date
EP1621105A1 true EP1621105A1 (fr) 2006-02-01
EP1621105B1 EP1621105B1 (fr) 2009-06-17

Family

ID=34926019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04018191A Not-in-force EP1621105B1 (fr) 2004-07-31 2004-07-31 Brosse à dents avec cavités

Country Status (5)

Country Link
US (1) US8046864B2 (fr)
EP (1) EP1621105B1 (fr)
AT (1) ATE433687T1 (fr)
DE (1) DE502004009613D1 (fr)
WO (1) WO2006012938A2 (fr)

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DE102006005616A1 (de) * 2006-02-06 2007-08-09 Synpart Ag Reinigungs-oder Applikationsgerät
WO2008125274A1 (fr) * 2007-04-13 2008-10-23 Braun Gmbh Brosse à dents
EP2181621A1 (fr) 2008-10-28 2010-05-05 Braun Gmbh Brosse à dents
CN104248213A (zh) * 2009-12-18 2014-12-31 高露洁-棕榄公司 具有多构件手柄的口腔护理器具

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USD666005S1 (en) 2008-04-21 2012-08-28 Braun Gmbh Portion of a toothbrush handle
ES2538716T3 (es) * 2009-03-18 2015-06-23 Braun Gmbh Cepillo dental
US20110078867A1 (en) * 2009-10-01 2011-04-07 Michael Liangco Flexible toothbrush
CA2784176C (fr) * 2009-12-10 2016-02-02 Braun Gmbh Configuration de tete de brosse a dents
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US8561248B2 (en) 2011-08-25 2013-10-22 King Saud University Flexible, ergonomic toothbrush with replaceable bristles
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US10021959B2 (en) 2014-12-23 2018-07-17 Colgate-Palmolive Company Oral care implement having multi-component handle
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US20220361655A1 (en) * 2021-05-14 2022-11-17 Colgate-Palmolive Company Personal Care Implement
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Publication number Priority date Publication date Assignee Title
DE102006005616A1 (de) * 2006-02-06 2007-08-09 Synpart Ag Reinigungs-oder Applikationsgerät
WO2008125274A1 (fr) * 2007-04-13 2008-10-23 Braun Gmbh Brosse à dents
EP2181621A1 (fr) 2008-10-28 2010-05-05 Braun Gmbh Brosse à dents
WO2010049901A2 (fr) * 2008-10-28 2010-05-06 Braun Gmbh Brosse à dent
WO2010049901A3 (fr) * 2008-10-28 2010-07-15 Braun Gmbh Brosse à dent
CN104248213A (zh) * 2009-12-18 2014-12-31 高露洁-棕榄公司 具有多构件手柄的口腔护理器具

Also Published As

Publication number Publication date
US8046864B2 (en) 2011-11-01
US20090188063A1 (en) 2009-07-30
WO2006012938A3 (fr) 2006-07-06
WO2006012938A2 (fr) 2006-02-09
ATE433687T1 (de) 2009-07-15
DE502004009613D1 (de) 2009-07-30
EP1621105B1 (fr) 2009-06-17

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