EP4117485A1 - Brosse et procédé de production de ladite brosse - Google Patents

Brosse et procédé de production de ladite brosse

Info

Publication number
EP4117485A1
EP4117485A1 EP21710208.6A EP21710208A EP4117485A1 EP 4117485 A1 EP4117485 A1 EP 4117485A1 EP 21710208 A EP21710208 A EP 21710208A EP 4117485 A1 EP4117485 A1 EP 4117485A1
Authority
EP
European Patent Office
Prior art keywords
section
support body
carrier
body part
carrier body
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.)
Pending
Application number
EP21710208.6A
Other languages
German (de)
English (en)
Inventor
Bart Gerard Boucherie
Chris DEPICKERE
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.)
GB Boucherie NV
Original Assignee
GB Boucherie NV
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 GB Boucherie NV filed Critical GB Boucherie NV
Publication of EP4117485A1 publication Critical patent/EP4117485A1/fr
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/18—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier the bristles being fixed on or between belts or wires
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies
    • A46D3/05—Machines for inserting or fixing bristles in bodies for fixing the bristles between wires, tapes, or the like
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D3/00—Preparing, i.e. Manufacturing brush bodies
    • A46D3/04—Machines for inserting or fixing bristles in bodies

Definitions

  • the invention relates to a brush which has a carrier body and a bristle insert, and a method for producing this brush.
  • the brush consists of filigree brushes such as cosmetic brushes, mascara brushes or interdental brushes, the common feature of which is that they have a bristle insert, the supporting structure of which consists of a wire that is bent 180 ° in the middle and the two sections of which are twisted together, a plurality of bristles being pinched between the two twisted-together portions along a portion of the wire.
  • the part of the wire provided with the bristles forms a bristle section, and a part which is not provided with bristles forms an anchoring section which is fastened on or in the carrier body.
  • the anchoring section is heated and pressed into the material of the carrier body in order to be anchored there after it and the material heated by it have cooled down again.
  • the disadvantage of this method is also that the clock rate is very limited, since it takes some time is required to warm up the anchoring section and then let it cool down again.
  • Another method is to provide a receiving socket for the anchoring section in the support body, heating the material of the receiving socket to a softening temperature and then pressing the socket together from two sides after the anchoring section has been inserted into the receiving socket. This method enables high clock rates to be achieved.
  • the object of the invention is to create a brush of the cosmetic brush, mascara brush, interdental brush or similar type which can be manufactured at a high cycle rate and in which the bristle insert is reliably anchored on the carrier body.
  • the object of the invention is also to provide a method for producing such a brush.
  • a brush with a carrier body and a bristle insert is provided according to the invention, the carrier body consisting of at least two carrier body parts attached to one another and the bristle insert having two wire sections twisted together, which clamp a plurality of bristles between them in a bristle section and in one of The bristle-free section forms an anchoring section which is received in the support body in a receptacle and is fastened there in an embedding section of one of the support body parts, the embedding section being accessible from a parting plane between the two support body parts.
  • a method for producing such a brush is also provided by means of the following steps: First, a support body part is provided. Then the anchoring section of the bristle insert is pressed against the embedding section by means of an activated sonotrode. Finally, the second support body part is attached to the first support body part.
  • the invention is based on the basic idea of using an at least two-part carrier body, the bristle insert first being “welded” onto one of the carrier parts.
  • the second support body part is then attached so that the anchoring section of the bristle insert is covered and not visible from the outside.
  • “Welded in” here means that the anchoring section, which consists of wire, forms an intimate connection with the material of the first support body part through the combined effect of ultrasonic vibrations and pressure. If the first support body part is made of plastic, the material of the first support body part melts locally under the effect of the energy introduced, so that the anchoring section sinks locally into the support body part. This forms the embedding section in which the anchoring section is pressed so far into the material of the first support body part that it is held in a form-fitting manner there when the material of the support body section has solidified again. Depending on the material of the first carrier body part, the first carrier body part can also be glued to the anchoring section of the bristle insert.
  • the anchoring section has a bending section, the direction of extension of which differs from the direction of extension of the anchoring section.
  • the bending section prevents that the anchoring section can be screwed out of the carrier body, since the bending section locks the anchoring section in a form-fitting manner within the carrier body.
  • the bending section can extend in a plane perpendicular to the parting plane between the two support body parts or also parallel to the parting plane between the two support body parts.
  • the receptacle is formed by grooves in the two support body parts.
  • the grooves together form the receptacle for the anchoring section of the bristle insert, so that the two carrier body parts can be placed against one another without a gap.
  • the receptacle is formed by a groove in only one of the carrier body parts.
  • the two carrier body parts can be attached to one another, for example, by welding, gluing or locking.
  • the anchoring section is pressed into the support body part by means of the sonotrode by a distance that is more than 30% of the diameter of the anchoring section, preferably by more than 50%.
  • the anchoring section can be deformed by the sonotrode, so that a bending section is formed. With this procedure it is not necessary to bend the anchoring section beforehand; the desired deformation is achieved by pressing on the sonotrode.
  • the bending section can be pressed into the material of the support body part by a distance that is more than 200% of the diameter of the Anchoring section is.
  • the carrier body part does not have any prefabricated indentation or the like for receiving the bending section, but the corresponding contour is formed under the effect of the energy introduced by the sonotrode.
  • FIGS. 1 a to 1 f show different views of a brush according to a first embodiment and the steps during its manufacture; and FIGS. 2a to 2e show different views of a brush according to a second embodiment and different steps in its manufacture.
  • a carrier body 10 which consists of a first carrier body part 12 and a second carrier body part 14.
  • the two support body parts 12, 14 can consist of plastic, in particular an injection-mouldable plastic material. It is also possible for the two support body parts 12, 14 to consist of a natural material, in particular wood or bamboo.
  • a bristle insert 16 is attached to the carrier body 10 and consists of a piece of wire that is bent in the middle so that two sections of equal length are included. These are twisted together. In this case, a large number of bristles are introduced between the two wire sections that are twisted with one another in one area, so that the bristles are clamped between the wire sections. A bristle section 18 is thereby formed. Outside the bristle section 18, the twisted wire sections are free of bristles. Some of the bristle-free wire sections are used to fasten or anchor the bristle insert 16 in the support body 10. Accordingly, an anchoring section 20 is formed.
  • the bristle insert can also be formed by two separate pieces of wire that are twisted together.
  • each of the support body parts 12, 14 has a groove 22 which together form a seat for the anchoring section 20 of the bristle set 16.
  • a groove can also be provided in only one of the carrier body parts.
  • the bristle insert 16 is attached to the first support body part 12 by placing the anchoring section 20 in the groove 22 and then pressing it against the support body part 14 by means of a sonotrode 24 shown schematically in FIG. 1d. At the same time, the sonotrode 24 is activated so that it is set in ultrasonic vibrations.
  • the ultrasonic vibrations are transmitted to the anchoring section 20, so that friction arises between the anchoring section 20 and the material of the first carrier body part 12.
  • the anchoring section 20 connects in an embedding section 25 with the material of the first carrier body part 12.
  • the first carrier body part 12 is made of plastic, the first carrier body part 12 is melted locally, so that the anchoring section 20 is pressed or melted into the material of the first carrier body part 12 in an embedding section 25.
  • the anchoring section 20 burns into the material of the first support body part 12 in an embedding section 25, so that an intimate connection between the two components is also created.
  • the anchoring section is firmly embedded in the material of the first carrier body part 12 in the area to which the sonotrode 24 is exposed.
  • the first support body part 12 has a recess 26 which is designed as a recess of the groove 22.
  • a part of the anchoring section 20 is pressed into this recess 26 by means of a projection 28 which is provided on the sonotrode 24 (and is plastically deformed in the process), so that a bending section 30 is created.
  • the bending section 30, which extends in a direction deviating from the longitudinal direction of the bristle insert 16, forms, since it is received in the recess 26, an anti-twist device that prevents the bristle insert from being unscrewed from the receptacle of the carrier body 10 holding it .
  • the second carrier body part 14 is fastened to the first carrier body part 12.
  • the two support body parts 12, 14 can be welded or glued to one another. Small locking hooks can also be provided so that the two parts lock together.
  • the bristle insert 16 Since the bristle insert 16 is completely attached to one of the carrier body parts before the two carrier body parts 12, 14 are assembled to form the carrier body 10 (and the bristle insert 16 is then received in the receptacle formed by the two grooves 22), the area of the bristle insert 16, which forms the anchoring section 20, easily accessible.
  • the embedding section, which receives the anchoring section 20, is also easily accessible, since it extends from the parting plane T between the two support body parts 12, 14.
  • FIGS. 2a to 2e A second embodiment is shown in FIGS. 2a to 2e.
  • the same reference numerals are used for the components known from the first embodiment, and in this respect reference is made to the explanations above.
  • the bending section 30 does not extend perpendicular to the parting plane T when the bristle insert 16 is installed, but rather lies parallel to the parting plane T between the two support body parts 12, 14.
  • the bending section 30 is already prefabricated and is not created by pressing on the sonotrode.
  • the bending section 30 serves as an anti-twist device for the bristle insert 16.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Brushes (AREA)

Abstract

L'invention concerne une brosse comprenant un corps de support (10) et un insert de poils (16), le corps de support (10) étant composé d'au moins deux parties de corps de support (12, 14) fixées l'une à l'autre et l'insert de poils (16) présentant deux parties de fil torsadées ensemble, qui serrent une pluralité de poils entre elles dans une partie de poils (18) et forment une partie d'ancrage (20) dans une partie exempte de poils, ladite partie d'ancrage étant maintenue dans une cavité (22) dans le corps de support (10) et étant fixée dans une partie d'incorporation de l'une des parties de corps de support (12), la partie d'incorporation (25) étant accessible à partir d'un plan de séparation (T) entre les deux parties de corps de support (12, 14). L'invention concerne en outre un procédé de fabrication d'une brosse de ce type au moyen des étapes suivantes : une première partie de support de corps (12) est fournie ; ensuite, la partie d'ancrage (20) de l'insert de poils (16) est pressée contre la partie d'incorporation (25) au moyen d'une sonotrode activée (24) ; ensuite, la seconde partie de corps de support (14) est fixée à la première partie de corps de support (12).
EP21710208.6A 2020-03-11 2021-03-02 Brosse et procédé de production de ladite brosse Pending EP4117485A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020106678.3A DE102020106678A1 (de) 2020-03-11 2020-03-11 Bürste und Verfahren zur Herstellung dieser Bürste
PCT/EP2021/055127 WO2021180512A1 (fr) 2020-03-11 2021-03-02 Brosse et procédé de production de ladite brosse

Publications (1)

Publication Number Publication Date
EP4117485A1 true EP4117485A1 (fr) 2023-01-18

Family

ID=74859407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21710208.6A Pending EP4117485A1 (fr) 2020-03-11 2021-03-02 Brosse et procédé de production de ladite brosse

Country Status (5)

Country Link
EP (1) EP4117485A1 (fr)
CN (1) CN115334935A (fr)
DE (1) DE102020106678A1 (fr)
TW (1) TW202133765A (fr)
WO (1) WO2021180512A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6446640B1 (en) * 1999-03-22 2002-09-10 John O. Butler Company Dental hygiene device with easily mounted and identified dental hygiene element
EP2052695B1 (fr) * 2007-10-24 2010-05-12 Trisa Holding AG Appareil de nettoyage de interdentaire
DE102009019451A1 (de) * 2009-04-29 2010-11-04 Zahoransky Ag Verfahren und Vorrichtung zur Bearbeitung von Borstenfilamenten
DE102018127192A1 (de) * 2018-10-31 2020-04-30 Gb Boucherie Nv Trägerkörper für einen Borsteneinsatz, Bürste und Verfahren zur Herstellung einer Bürste
DE102019129284A1 (de) * 2019-10-30 2021-05-06 Gb Boucherie Nv Trägerkörper für einen Borsteneinsatz, Bürste und Verfahren zur Herstellung einer Bürste

Also Published As

Publication number Publication date
WO2021180512A1 (fr) 2021-09-16
TW202133765A (zh) 2021-09-16
CN115334935A (zh) 2022-11-11
DE102020106678A1 (de) 2021-09-16

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