WO2007107270A1 - Brosse à dents et son procédé de production - Google Patents

Brosse à dents et son procédé de production Download PDF

Info

Publication number
WO2007107270A1
WO2007107270A1 PCT/EP2007/002225 EP2007002225W WO2007107270A1 WO 2007107270 A1 WO2007107270 A1 WO 2007107270A1 EP 2007002225 W EP2007002225 W EP 2007002225W WO 2007107270 A1 WO2007107270 A1 WO 2007107270A1
Authority
WO
WIPO (PCT)
Prior art keywords
joint
toothbrush
head part
head
sheath
Prior art date
Application number
PCT/EP2007/002225
Other languages
German (de)
English (en)
Inventor
Ulrich Kaczmarek
Original Assignee
Gerresheimer Wilden Ag Schweiz
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 Gerresheimer Wilden Ag Schweiz filed Critical Gerresheimer Wilden Ag Schweiz
Priority to US12/225,298 priority Critical patent/US20100313371A1/en
Priority to EP07723235.3A priority patent/EP1996043B1/fr
Publication of WO2007107270A1 publication Critical patent/WO2007107270A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0062—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being flexible or resilient during use
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B5/00—Brush bodies; Handles integral with brushware
    • A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
    • A46B5/0054—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body
    • A46B5/0075—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions designed to allow relative positioning of the head to body being adjustable and stable during use
    • A46B5/0087—Mechanical joint featuring a ball and socket
    • 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 with a handle part and a head part, which carries a bristle trim, wherein the handle part is connected to the head part via a hinge, which is associated with a spring device made of an elastic plastic material. Moreover, the invention relates to a method for producing a corresponding toothbrush.
  • the handle of a toothbrush is formed as a one-piece component made of plastic, which in a transition region between the rear grip portion and the front head portion by special cross-sectional configurations and / or Materialkombinati- ons has a lower resistance moment and thus a higher deformability.
  • the handle of the toothbrush is formed as a one-piece component made of plastic, which in a transition region between the rear grip portion and the front head portion by special cross-sectional configurations and / or Materialkombinati- ons has a lower resistance moment and thus a higher deformability.
  • a form the rear handle part and a front head part of the toothbrush as an independent components and connect to each other via a joint.
  • the invention relates to a toothbrush of the latter construction.
  • a corresponding toothbrush is known, for example, from WO99 / 39610 A1.
  • the toothbrush described therein has a handle portion which has a J-shaped hook portion at its front, the bristle facing end facing.
  • a head part likewise has a J-shaped hook section at its rear end facing the gripping part.
  • the two hook sections engage with each other to form a gap and the gap is filled with an elastic plastic material.
  • the deformation properties of the head part relative to the handle part are substantially dependent on the thickness of the plastic material and thus on the size of the gap between the head part and the handle part. Since the size of the gap is structurally predetermined, toothbrushes with different deformation properties can only be achieved by using different elastic plastic materials. This is disadvantageous in terms of production technology. In addition, it has been found that the known toothbrush has an undefined rigidity perpendicular to the desired direction of movement of the head part, so that buckling may occur during use of the toothbrush.
  • the invention has for its object to provide a toothbrush of the type mentioned, with the defined deformation properties can be achieved in use.
  • a method is to be created with which to make a corresponding toothbrush in a simple and cost-effective manner.
  • the spring device is formed by an at least partially outer casing of the joint, wherein the casing preferably consists of a thermoplastic elastomer.
  • the basic idea is not to arrange the elastic plastic material forming the spring device inside the joint, but to arrange it in the form of an at least partial outer wrapping of the joint on its outside.
  • the joint can be optimally adapted to the desired deformation movements of the head part relative to the handle part in its shape and its possibilities of movement.
  • the joint is a ball joint or a hinge joint.
  • a spherical joint body sits snugly in a complementarily configured joint receptacle, so that a pivoting movement of the ball joint
  • Head part relative to the handle part in any direction by 360 ° is possible.
  • a cylindrical joint body is provided in a corresponding complementary joint receptacle, so that a pivoting of the head part relative to the grip part is possible only in one direction or one plane.
  • the joint may also have another structural design, for example as a saddle joint.
  • the outer cover can be easily applied to the joint and in particular spray on and determines the deformation properties of the head part relative to the Handle portion.
  • the reaction forces produced during deformation of the toothbrush in the elastic plastic material of the sheath and thus the spring rate of the spring device can be determined by the shaping and / or the thickness of the sheath and / or by the material properties and in particular the Shore hardness of the plastic sheath. Set material as desired.
  • the joint permits movement of the head part relative to the handle part in only one predetermined plane, as is the case for example with a hinge joint
  • the cover is formed by at least two tendon parts, each with one end on the handle part and attached to the headboard at the other end.
  • exactly two tendon parts should be provided, which are arranged on those opposite sides of the toothbrush, in the direction of the head part can dodge.
  • the envelope completely surrounds the joint and encapsulates it in relation to the environment.
  • the complete covering of the joint is to be preferred for reasons of hygiene, since in this way it is reliably ruled out that dirt and / or bacteria can enter and settle in the joint.
  • the construction according to the invention of a toothbrush makes it possible to produce the grip part and the head part as separate components or in succession.
  • the handle part and the head part may consist of the same material and in particular of the same plastic.
  • the grip part and the head part are made of different materials. This can make sense for reasons of cost, since only the head part is inserted into the user's mouth when the toothbrush is in use and thus has to meet higher hygienic requirements than the handle part.
  • the head part made of plastic and in particular consists of polypropylene.
  • the grip part may also consist of plastic and in particular of polystyrene or ABS (acrylonitrile-butadiene-styrene copolymers).
  • the head part can consist of one piece, but in an alternative embodiment of the invention it can also be provided that the head part is subdivided into a bristle trimming-bearing first head part section and a second head part section connected via the joint to the grip part 1. Head section and the second head section are connected to each other via another joint.
  • the further joint can have an embodiment, as has already been described above in connection with the other joint, and reference should be made to avoid repetition.
  • the further joint is associated with a further spring device in the form of a further, at least partially outer sheath, wherein the sheath may consist of a thermoplastic elastomer in the aforementioned manner.
  • the further envelope may be formed in the manner mentioned by at least two tendon parts, but preferably the further envelope encapsulates the further joint completely against the environment.
  • the two head portions may be made of the same material or of different materials, but preferably for both head portions of the same plastic and in particular polypropylene is used.
  • the further joint may be a ball joint or a hinge joint.
  • the above-mentioned object can be achieved in different ways.
  • the joint is encapsulated to form the envelope with an elastic plastic material and in particular a thermoplastic elastomer.
  • the handle part and the head part are preferably each formed as a plastic injection-molded part, which are brought together and encapsulated in an injection molding machine with the envelope.
  • the head part from two head part sections, wherein for the formation of the head part first a first head part section and a second head part section are produced independently of each other and then connected together to form another joint whereupon the further joint is at least partially encapsulated to form a further envelope with an elastic and in particular elastomeric plastic material.
  • a first component in the form of the grip part or the head part is produced.
  • the other of these components ie the head part or the handle part, molded to form the joint.
  • the materials of the grip part and of the head part do not enter into a material-locking connection, but only communicate with one another in a form-fitting manner, ie the head part remains relative to the handle. partly movable.
  • the joint is at least partially and in particular completely encapsulated to form the envelope with an elastic plastic material and in particular a thermoplastic elastomer.
  • the grip part, the head part and the sheath are produced in a three-step injection molding process in a common injection molding tool. If, in a first step, the grip part is injected, in the second step, the head part is sprayed onto the grip part, while maintaining the relative mobility. Alternatively, in the first step, first the head part and then in the second step, the grip part can be injected. Finally, in the third step, the envelope is sprayed, which forms the spring device.
  • the sheath should completely surround the joint and thus encapsulate it from the environment.
  • Fig. 1 shows a toothbrush according to the invention in side view
  • 3 shows a handle part as a separate component
  • 4 shows the head part and the grip part after assembly
  • Fig. 5 shows a toothbrush according to an alternative embodiment
  • FIG. 6 shows a development of the toothbrush according to FIG. 1.
  • FIG. 1 shows a toothbrush 10 according to the invention which has a substantially rod-shaped grip part 13 and a rod-shaped head part 11 which are arranged one behind the other in the longitudinal direction and are connected to one another at the ends facing each other to form a joint 14, the joint 14 according to FIG. 1 is surrounded by a sheath 19 forming a spring device 17 and completely encapsulated in relation to the environment.
  • a bristle trim 12 is provided at the end remote from the handle portion 13 of the head portion 11.
  • FIG. 2 shows the head part 11 as a single component. It can be seen that at the handle part 3 facing the lower end of a spherical joint body 15 is formed.
  • Figure 3 shows the handle portion 13 as a single component, which has on its head portion 11 facing the upper end of a hinge seat 16, in which the hinge body 15 of the head part 11 can engage.
  • the head part 11 is preferably prefabricated from plastic and provided with a bristle trim 12. Regardless, the handle 13 is also prefabricated from plastic. These two components are then assembled to one another by inserting the joint body 15 into the joint receptacle 16, where it preferably engages in a form-locking manner, in particular by latching forces, on a hinge. fall is prevented. This condition is shown in FIG. When the joint body 15 is a ball, the head part 14 can be freely pivoted relative to the grip part 13 in all directions.
  • the joint 14 of the preassembled toothbrush shown in FIG. 4 is then completely encapsulated in an injection molding tool with the cladding 19 made of a thermoplastic elastomer.
  • the casing 19 forms the spring device 17, which generates reaction forces and restoring moments when the head part 11 is pivoted relative to the handle part 13 during use of the toothbrush, by which the head part 11 returns to its starting position relative to the handle part 13, if the load is not more is available.
  • the head part 11 and the grip part 13 were produced independently of one another, then mounted on one another and encapsulated in the region of the joint 14 with the covering 19.
  • the handle part 13 can be produced, to which then the head part 11 is molded.
  • the envelope 19 is then injected in the region of the joint 14. All three process steps can take place in the same injection molding machine.
  • the joint 14 is designed as a ball joint, so that the head part 11 can pivot relative to the grip part 13 in many different directions. Accordingly, the joint 14 is fully constantly surrounded by the sheath 19 to produce upon pivoting of the head portion 11 in any direction always corresponding reaction forces in the sheath 19.
  • Figure 5 shows a modified embodiment in which the joint body 15 of the joint 14 is formed as a cylinder body, which sits in a complementarily shaped joint seat 16. In this way, the head part 11 can only be pivoted about a pivot axis A extending in the longitudinal direction of the cylindrical joint body 15 in only one predetermined plane relative to the grip part 13. In this embodiment, it is sufficient not to completely surround the hinge 14 with the sheath 19, but the sheath 19 is formed by two tendon parts 18a and 18b disposed on opposite sides of the toothbrush 10. Each tendon part 18a, 18b is with its one end on
  • the head part 11 is pivoted relative to the grip part 13 about the axis A, one of the tendon parts 18a, 18b is subjected to a tensile force, while the other tendon part is correspondingly subjected to a compressive force.
  • the tendon parts 18a and 18b generate the reaction forces that determine the resilient deformation properties of the head part.
  • the toothbrush (10) in three parts, the three parts being arranged lying one behind the other and via two joints to form a brush stem are connected.
  • the handle part 13 has the structure mentioned in connection with the previous embodiments.
  • the head part 11 is subdivided into a bristle trim 12 bearing upper first head portion IIa and a connected via the joint 14 with the handle portion 13 in the manner mentioned lower 2nd head portion.
  • a further joint 20 is formed, which supports the joint
  • the structure described with the joint 14 and configured as a ball joint which is surrounded by a further outer casing 22 made of an elastomeric plastic and completely encapsulated with respect to the environment.
  • the further envelope 22 forms a further spring device 21, which determines the extent of the adjustment of the upper first head portion IIa relative to the lower second head portion IIb in use of the toothbrush.

Abstract

Une brosse à dents comprend un élément de préhension et un élément de tête, porteur d'une garniture de poils. L'élément de préhension est relié avec l'élément de tête au moyen d'une articulation à laquelle est associé un dispositif faisant office de ressort, en une matière plastique élastique. L'invention est caractérisée en ce que le dispositif à ressort est formé par une enveloppe, au moins partiellement externe, de l'articulation. Dans une forme d'exécution préférée, l'enveloppe entoure complètement l'articulation et la maintient étanche vis-à-vis de l'environnement.
PCT/EP2007/002225 2006-03-21 2007-03-14 Brosse à dents et son procédé de production WO2007107270A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/225,298 US20100313371A1 (en) 2006-03-21 2007-03-14 Toothbrush and Method for Producing It
EP07723235.3A EP1996043B1 (fr) 2006-03-21 2007-03-14 Brosse a dents et son procede de production

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006013272A DE102006013272A1 (de) 2006-03-21 2006-03-21 Zahnbürste und Verfahren zu ihrer Herstellung
DE102006013272.6 2006-03-21

Publications (1)

Publication Number Publication Date
WO2007107270A1 true WO2007107270A1 (fr) 2007-09-27

Family

ID=38134805

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/002225 WO2007107270A1 (fr) 2006-03-21 2007-03-14 Brosse à dents et son procédé de production

Country Status (4)

Country Link
US (1) US20100313371A1 (fr)
EP (1) EP1996043B1 (fr)
DE (1) DE102006013272A1 (fr)
WO (1) WO2007107270A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110016651A1 (en) * 2009-07-21 2011-01-27 Robert Piserchio Pressure-sensitive toothbrush
EP2822422B1 (fr) 2012-03-09 2019-05-15 Colgate-Palmolive Company Méthode de fabrication d'une plaque de tête et fabrication d'un instrument de soin oral utilisant celle-ci
WO2013141860A1 (fr) * 2012-03-22 2013-09-26 Colgate-Palmolive Company Accessoire de soins bucco-dentaires comportant un manche flexible
EP2807946B1 (fr) * 2013-05-29 2019-01-23 The Gillette Company LLC Concept de brosse à dents manuelle combinée à partir de trois parties
FR3017780B1 (fr) * 2014-02-21 2016-02-19 Oreal Applicateur articule a tige flexible
JP7072200B2 (ja) * 2017-05-16 2022-05-20 ヤマトエスロン株式会社 幼児用歯ブラシ
USD893881S1 (en) 2017-11-17 2020-08-25 Colgate-Palmolive Company Oral care apparatus
USD858997S1 (en) 2017-11-17 2019-09-10 Colgate-Palmolive Company Tracking module for an oral care implement
USD858105S1 (en) 2017-11-17 2019-09-03 Colgate-Palmolive Company Oral care implement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673452A (en) * 1996-08-12 1997-10-07 Chang; Ching-Min Toothbrush
WO1998037788A1 (fr) * 1997-02-24 1998-09-03 Smithkline Beecham Consumer Healthcare Gmbh Brosse a dents
WO1999016332A2 (fr) * 1997-09-26 1999-04-08 Smithkline Beecham Gmbh & Co. Kg Brosse a dents
DE29820735U1 (de) * 1998-11-20 2000-03-23 Schiffer Fa M & C Bürste, insbesondere Zahnbürste

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1369664A (en) * 1920-07-29 1921-02-22 Izawa Riichiro Toothbrush
US1532522A (en) * 1924-04-17 1925-04-07 Jr Benjamin F Weaver Toothbrush
US3425084A (en) * 1966-08-08 1969-02-04 Pro Phy Lac Tic Brush Co Brushes and method for their manufacture
US4654922A (en) * 1985-05-28 1987-04-07 Chen Horng Y Brush with universal joints
DE3923495C1 (fr) * 1989-07-15 1991-01-24 M + C Schiffer Gmbh, 5466 Neustadt, De
GB2282959B (en) * 1993-10-19 1998-06-17 Addis Ltd Improvements in or relating to toothbrushes
GB9513883D0 (en) * 1995-07-07 1995-09-06 Lingner & Fischer Gmbh Toothbrush
DE29721004U1 (de) * 1997-11-27 1998-02-12 Garnjost Achim Dr Med Zahnbürste mit Druckbegrenzung
GB9802248D0 (en) * 1998-02-04 1998-04-01 Smithkline Beecham Gmbh & Co Toothbrush
GB0014495D0 (en) * 2000-06-15 2000-08-09 Smithkline Beecham Gmbh & Co Process
DE10055930A1 (de) * 2000-11-10 2002-05-23 Geyer Bruno Werkzeugbau Hand-Zahnbürste
US6931688B2 (en) * 2002-08-09 2005-08-23 Colgate-Palmolive Company Toothbrush

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673452A (en) * 1996-08-12 1997-10-07 Chang; Ching-Min Toothbrush
WO1998037788A1 (fr) * 1997-02-24 1998-09-03 Smithkline Beecham Consumer Healthcare Gmbh Brosse a dents
WO1999016332A2 (fr) * 1997-09-26 1999-04-08 Smithkline Beecham Gmbh & Co. Kg Brosse a dents
DE29820735U1 (de) * 1998-11-20 2000-03-23 Schiffer Fa M & C Bürste, insbesondere Zahnbürste

Also Published As

Publication number Publication date
DE102006013272A1 (de) 2007-10-04
EP1996043B1 (fr) 2014-02-26
US20100313371A1 (en) 2010-12-16
EP1996043A1 (fr) 2008-12-03

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