EP2205412B1 - Tondeuse - Google Patents

Tondeuse Download PDF

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Publication number
EP2205412B1
EP2205412B1 EP08802839A EP08802839A EP2205412B1 EP 2205412 B1 EP2205412 B1 EP 2205412B1 EP 08802839 A EP08802839 A EP 08802839A EP 08802839 A EP08802839 A EP 08802839A EP 2205412 B1 EP2205412 B1 EP 2205412B1
Authority
EP
European Patent Office
Prior art keywords
teeth
cutting element
hair trimmer
stationary cutting
hair
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.)
Active
Application number
EP08802839A
Other languages
German (de)
English (en)
Other versions
EP2205412A1 (fr
Inventor
Michael Maichel
Peter Schäfer
Jürgen BEHRENDT
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.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP2205412A1 publication Critical patent/EP2205412A1/fr
Application granted granted Critical
Publication of EP2205412B1 publication Critical patent/EP2205412B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/06—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving co-operating cutting elements both of which have shearing teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/20—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers with provision for shearing hair of preselected or variable length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3806—Accessories
    • B26B19/382—Built-in accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3846—Blades; Cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories

Definitions

  • the invention relates to a hair trimmer with a fixed cutting element having teeth on the front and an oscillatingly movable against the fixed cutting element cutting element having teeth on the front, so that when using the Haartrimmers between the teeth of the fixed and movable cutting element arrive, be separated.
  • Hair trimmers of the type mentioned are known. They are used by hairdressers, for example, in the professional hair care sector, or by the home user for trimming main or beard hair.
  • Another area of application is added body grooming, in which the user wants to achieve above all an esthetically effective effect by a thorough hair removal in other body regions, such as the underarm area, in the bikini area or in the genital area.
  • Disadvantage of the known trimmer is that either the distance between the teeth of the cutting elements is so large that the thinner skin in the body regions mentioned can get between the teeth and is then cut painfully or the teeth are so narrow at more closely spaced teeth of the cutting elements must be carried out that they can thread into the relatively wide hair channels in the skin of said body regions and these can tear when moving the Haartrimmers painful.
  • a razor which has a trimmer designed as a long hair trimmer of the type mentioned.
  • the trimmer has a skin protection element, which is arranged in front of the mutually movable cutting elements and protects the skin from direct contact with the cutting teeth of the cutting elements.
  • a disadvantage of this skin protection element is that when shaving in the body regions mentioned the skin come into contact with the metal, fixed cutting element and this cold contact can be perceived by the user as unpleasant.
  • a fold of the skin between the skin protection element and the cutting elements can be clamped by the resiliently arranged fingers of the skin protection element when moving the Haartrimmers on the skin, which can cause the skin between the teeth of the fixed cutting element threaded and then cut becomes.
  • the U.S. Patent 4,724,614 discloses an attachment for a hair clipper.
  • the attachment can be placed on the cutting head of the hair trimmer similar to a spacer comb.
  • US 2,941,293 discloses another hair clipper provided with a comb.
  • US 1,761,550 discloses a hair clipper in which an attachment with a row of teeth can be attached
  • US 1,716,465 and the patent CH 247791 reveal further electric hair clippers of similar kind.
  • the object of the present invention is to provide an improved hair trimmer in which a high comfort of use and a prevention of painful skin injuries are achieved while at the same time thoroughly cutting off the hair near the skin surface.
  • the hair trimmer according to claim 1 comprises a protective pad which is disposed on the fixed cutting element and for supporting the Haartrimmers in use on the skin of the user.
  • a pleasant feeling for the user can be achieved, such as the fact that a plastic material is selected as the material of the protective pad, so that the skin contact no cold feeling.
  • the protective pad has teeth in the front area, these teeth of the protective pad can extend to the front area of the stationary cutting element without necessarily covering the teeth of the stationary cutting element.
  • the teeth of the protective pad with the teeth of the fixed cutting element front complete or only slightly beyond the teeth of the fixed cutting element, it is achieved that the skin of the user in a conventional use does not come into contact with the teeth of the fixed cutting element or only with the front of the teeth comes into contact and at the same time provide the teeth of the protective pad also that the teeth of the fixed cutting element can not thread into hair channels, since the front end or slightly protruding teeth of the protective pad prevent this by their additional front bearing surface.
  • the front bearing surfaces of the teeth of the protective pad are so to choose so that threading into hair channels essentially can not occur.
  • the teeth of the protective pad may extend slightly beyond the teeth of the fixed cutting element, this extension is preferably provided only in the plane of extent of the teeth of the fixed cutting element so that the teeth of the protective pad do not extend beyond the front of the teeth of the fixed cutting element. This allows the front face of the teeth of the stationary cutting element to be brought very close to the skin surface, which also allows clipping of the hair very close to the skin surface. Known protective requirements do not allow this. By “slightly” is meant here that the teeth of the protective pad do not project beyond the teeth of the fixed cutting element further than one of the front-side thickness of the teeth of the fixed cutting element corresponding length.
  • the center distance of the teeth of the protective pad is greater than the center distance of the teeth of the fixed cutting element. It is particularly interesting if the center distance of the teeth of the protective pad is an integral multiple of the center distance of the teeth of the fixed cutting element. Then, there is a regular pattern of registration between the teeth of the protective pad and the teeth of the fixed cutting element.
  • the teeth of the protective pad are wider than the teeth of the fixed cutting element.
  • the increased width of the teeth of the protective pad still helps to prevent the threading of teeth of the fixed cutting element in hair channels.
  • each one tooth of the protective overlay covers at least one space between two teeth of the fixed cutting element.
  • the teeth of the protective pad can be constructed to be particularly wide compared to the teeth of the fixed cutting element, which particularly supports the prevention of the threading of teeth of the fixed cutting element in hair channels. If exactly a gap between the teeth of the fixed cutting element is covered, then the overlaying teeth of the protective overlay also only ever influence a gap in its cutting efficiency.
  • a tooth of the protective pad has a projection which projects into the overlapped space between two teeth of the fixed cutting element.
  • the protective pad rests substantially gap-free on the fixed cutting element (in some embodiments, the fixed cutting element is crimped with the protective pad)
  • the teeth of the protective pad but resiliently rest on the stationary cutting element, when using the Haartrimmers hair between the teeth Clamp the protective support and teeth of the fixed cutting element, whereupon these hairs can be pulled out painfully when the trimmer moves against the skin.
  • the protrusion projecting into the gap effectively prevents hair from becoming trapped between the teeth, particularly when the projection is flush with the teeth of the fixed cutting element at the front or extends slightly beyond the front of the teeth of the fixed cutting element.
  • the teeth of the protective pad are rounded at the front, which supports a pleasant feeling on the skin when using the hair trimmer.
  • the height of the teeth of the protective pad decreases towards the front of the hair trimmer, which promotes thorough hair removal, since then the cutting elements can be brought very close to the skin and hairs are severed very close to the skin.
  • the protective overlay is at least in the region of the teeth gap-free connected to the fixed cutting element, such as by gluing. In a gap-free connection no hair can pinch between the teeth of the protective pad and the teeth of the fixed cutting element.
  • the center distance between the teeth of the fixed cutting element is 0.1 to 0.9 mm, preferably 0.3 to 0.7 mm.
  • the teeth of the fixed cutting element still have enough stability, but it is also prevents skin between the teeth of the fixed cutting element Since skin folds are typically thicker than the gap of about 0.2 mm between the teeth of the fixed cutting element.
  • the fixed cutting element is made of a metal sheet with a thickness of 0.1 to 0.5 mm, preferably 0.25 to 0.35 mm. This provides the sheet with sufficient stability and also results in a thorough hair removal, since the separation can then be carried out because of the relatively small thickness of the sheet very close to the skin surface.
  • a trimmer unit 20 which is (as in FIG Fig. 2 can be seen) consists of a fixed cutting element and a movable cutting element, arranged at the head of Haartrimmers and a wet razor with a blade cartridge 40 is slidably disposed on the back of the Haartrimmers, so in addition to (or at the same time) the electric hair removal also allows hair removal by blade shaving becomes.
  • a protective pad 3 is arranged on the trimmer unit 20, a protective pad 3 is arranged.
  • the protective pad in this embodiment is made of a plastic material that creates a pleasant feeling on the skin when The hair trimmer with the protective pad is placed on the skin and pulled over the skin.
  • Fig. 2 is an exploded view of the head portion of the hair trimmer Fig. 1 without exploded representation of the wet shaver.
  • the protective overlay 3 has been made in one piece with a plastic frame 30, such as by means of a plastic injection molding process.
  • a metal frame 31 is connected to the plastic frame 30.
  • the trimmer unit 20 consists of a fixed cutting element 20 '(comb) and a cutting element 20 "(blade) movable in a linear oscillatory manner against the fixed cutting element 20'
  • the stationary cutting element 20 ' is crimped on the head side with the protective overlay
  • the stationary cutting element 20' has Front arranged teeth, which cooperate with likewise arranged at the front teeth of the movable cutting element 20 "such that hair threading between the teeth of the fixed cutting element 20 'by the oscillatory movement of the movable cutting element 20" are separated, the separation process depending on the execution of Teeth of the movable cutting element 20 "is a cutting or shearing.
  • the movable cutting element 20 "sits on a driver 21, the foot has a guide, in which a movement transformer (not shown) engages to the driver 21 with the movable cutting element 20" linearly oscillatory, parallel to the front against the fixed cutting element 20 ' move.
  • a pressure element 22 By means of a pressure element 22, are arranged in the springs, the movable cutting element 20 is pressed 'against the fixed cutting element 20'.
  • Fig. 3 is a top view of the head of the hair trimmer 1 after Fig. 1 , Here it can be seen that the protective overlay 3 has teeth 4 in the front region. Between the teeth 4 of the protective pad 3 teeth of the fixed cutting element 20 'can be seen. With a dashed frame a section A is determined in Fig. 4 is shown enlarged.
  • Fig. 4 shows the enlarged detail A from Fig. 3 ,
  • the teeth 4 of the protective pad 3 can be seen.
  • the teeth 4 of the protective overlay 3 extend slightly beyond the teeth of the stationary cutting element 20 'at the front (which is shown in FIG Fig. 6 is better recognizable).
  • the teeth 4 of the protective cover extend only in their plane of extent, which is also the plane of extension of the teeth of the fixed cutting element 20 ', slightly in front of the teeth of the fixed cutting element 20'.
  • the teeth 4 of the protective pad 3 do not extend in front of the front side of the teeth of the fixed cutting element 20 '.
  • the center distance M between the teeth 4 of the protective pad is three times as large as the center distance M '(which in Fig.
  • Fig. 5 shows a side-frontal view of the vertically, cut at right angles to the front side head portion of the hair trimmer with the trimmer unit.
  • the fixed cutting element 20 ' is bent upwards stepwise behind the teeth arranged in the front region, so that the friction between the fixed cutting element 20' and the movable cutting element 20 "is minimized. lie parallel to each other and thus define a cutting plane.
  • the movable cutting element 20 is pressed onto projections of the driver 21.
  • the projections also engage in precision slots of the fixed cutting element 20 'to ensure parallel guidance in the linear oscillatory movement of the movable cutting element 20".
  • the height of the teeth 4 of the protective support 3 is reduced towards the front side and that the teeth 4 of the protective support 3 are rounded in the front region.
  • the height of the teeth 4 of the protective overlay here is about 0.5 mm.
  • the teeth 4 of the protective support 3 lie substantially free of gaps on the fixed cutting element 20 '. Since the fixed cutting element 20 'is crimped in the described embodiment in the bent portion with the protective pad 3, the teeth 4 of the protective pad 3 are only loosely on the teeth of the fixed cutting element.
  • Hair pinching into the minimal gap between the teeth 4 of the protective pad 3 and the teeth of the fixed cutting element 20 'when using the hair trimmer can pry this minimal gap against the spring force of the crimping in the rear area of the protective pad and between the teeth 4 the protective pad 3 and the teeth of the fixed cutting element 20 'are firmly clamped so that they can be torn from the skin painful and also clog the trimmer unit, so that no further hair can thread.
  • the teeth 4 of the protective support 3 are connected without gaps to the teeth of the fixed cutting element 20 ', for example by gluing with a suitable adhesive. Another possibility is to provide the teeth with a suitable projection. This will be discussed in the next section Fig. 6 described.
  • Fig. 6 shows as a detail image the teeth of the movable cutting element 20 ", the teeth of the fixed cutting element 20 'and the teeth 4 of the protective pad 3 at an obliquely upward viewing angle Cutting element 20 'set back from the front.
  • the teeth of the movable cutting element 20 “have, as usual, another, here a greater center distance than the teeth of the fixed cutting element 20 ', so that the cutting events along the front not as in occur at the same center distance at a time and load the energy source punctually, but almost continuously cutting events take place and the energy source is also continuously charged uniformly.
  • the teeth 4 of the protective overlay protrude slightly beyond the teeth of the fixed cutting element 20 'only in their plane of extension, without the teeth 4 of the protective overlay being pulled in front of the teeth of the cutting elements, as is the case with known spacer combs or protective combs Case is. (Such a known protective comb is approximately in the DE 103 55 154 A1 described.
  • the teeth of the protective comb front must extend well in front of the teeth of the cutting comb, because the teeth of the protective comb provide there for thermal insulation of the heated cutting comb.
  • the teeth 4 of the protective pad 3 protrude here not more than the plate thickness of the fixed cutting element 20 'in its extension plane beyond the teeth of the fixed cutting element 20 'out, wherein the minor extent in particular has a length of 0.2 mm or less, and moreover in particular has a length of 0.1 mm or less.
  • the sheet thickness of the fixed cutting element is 0.35 mm and the teeth 4 of the protective pad protrude about 0.1 mm beyond the teeth of the fixed cutting element 20 'addition.
  • the width b of a tooth 4 of the protective pad 3 is about two and a half times as large as the width b '(FIG. Fig. 4 shows the widths b and b ') of the teeth of the fixed cutting element 20' and a tooth 4 of the protective pad covers each a gap between two teeth of the fixed cutting element 20 '.
  • the width b is about 0.7 mm and the center distance M 'is about 0.55 mm, so that a tooth 4 of the protective pad covers two teeth of the fixed cutting element 20' and the space lying between them.
  • the center distance M (in as in Fig.
  • the teeth 4 of the protective pad is three times as large as the center distance M 'of the teeth of the fixed cutting element 20', so that two spaces between the teeth of the fixed cutting element 20 'remain uncovered between two teeth 4 of the protective pad.
  • a tooth 4 of the protective cover further has a projection 5, which projects into the space covered by the tooth 4 of the protective pad between two teeth of the fixed cutting element 20 '(the projection has a height of about 0.2 mm and a length of 0.5 mm) , wherein the projection here protrudes slightly beyond the front of the teeth of the fixed cutting element 20 '(in the example shown, this is about 0.04 mm) and thus effectively prevents hair in a remaining gap between the teeth 4 of the protective pad and the teeth of the fixed clamping element 20 'can pinch.
  • the projections 5 here as part of the embodiment according to Fig. 5 and Fig. 6 are shown, the projections 5 are to be understood as an optional feature, which in the embodiment according to Fig. 5 and Fig. 6 can also be omitted.
  • the size of the teeth 4 of the protective pad also prevents the teeth of the fixed cutting element 20 'can thread into hair channels and then tear them.
  • a typical value for the front width b of the teeth of the protective overlay is about 0.6 mm to 0.8 mm in order to substantially avoid threading into hair channels.

Claims (12)

  1. Tondeuse (1) comprenant
    • un élément de coupe fixe (20') doté de dents sur sa partie avant,
    • un élément de coupe mobile (20"), présentant un mouvement oscillatoire en direction de l'élément de coupe (20'), doté de dents sur sa partie avant, de sorte que les poils, qui viennent se placer entre les dents de l'élément de coupe fixe et de l'élément de coupe mobile lors de l'utilisation de la tondeuse (1), sont sectionnés, et
    • un capot de protection (3) disposé sur l'élément de coupe fixe (20'), destiné à poser la tondeuse (1) contre la peau de l'utilisateur et comportant des dents (4) sur sa partie avant,
    les dents (4) du capot de protection (3) se superposant aux dents de l'élément de coupe fixe (20') à l'avant ou s'étendant légèrement au-delà de celles-ci uniquement dans leur plan d'extension et les dents (4) du capot de protection (3) recouvrant l'élément de coupe fixe (20') au moins pratiquement sans interstice, la tondeuse (1) étant caractérisée en ce que chaque dent (4) du capot de protection (3) recouvre au moins un espace entre deux dents de l'élément de coupe fixe (20').
  2. Tondeuse selon la revendication 1, dans laquelle la distance de centre à centre (M) des dents (4) du capot de protection (3) est supérieure à la distance de centre à centre (M') des dents de l'élément de coupe fixe (20').
  3. Tondeuse selon la revendication 1 ou la revendication 2, dans laquelle la largeur (b) des dents (4) du capot de protection (3) est supérieure à la largeur (b') des dents de l'élément de coupe fixe (20').
  4. Tondeuse selon la revendication 1, 2 ou 3, dans laquelle au moins une dent (4) du capot de protection (3) présente une saillie (5) qui pénètre dans l'espace recouvert par la dent (4) du capot de protection (3).
  5. Tondeuse selon l'une des revendications 1 à 4, dans laquelle les dents (4) du capot de protection (3) sont arrondies côté avant.
  6. Tondeuse selon l'une des revendications 1 à 5, dans laquelle la hauteur des dents (4) du capot de protection (3), avec lequel celles-ci reposent sur l'élément de coupe fixe, diminue en direction du côté avant.
  7. Tondeuse selon l'une des revendications 1 à 6, dans laquelle le capot de protection (3) est relié sans interstice à l'élément de coupe fixe (20') au moins dans la zone des dents de l'élément de coupe fixe (20').
  8. Tondeuse selon l'une des revendications 1 à 7, dans laquelle la distance de centre à centre (M') entre les dents de l'élément de coupe fixe (20') est de 0,1 à 0,9 mm, de préférence de 0,3 à 0,7 mm.
  9. Tondeuse selon l'une des revendications 1 à 8, dans laquelle l'élément de coupe fixe (20') est fabriqué à partir d'une tôle métallique présentant une épaisseur de matériau de 0,1 à 0,5 mm, de préférence de 0,25 à 0,35 mm.
  10. Tondeuse selon l'une des revendications 1 à 9, dans laquelle les dents (4) du capot de protection (3), dans leur plan d'extension, ne dépassent pas les dents de l'élément de coupe fixe (20') plus que d'une distance équivalente à l'épaisseur des dents de l'élément de coupe fixe (20').
  11. Tondeuse selon la revendication 10, dans laquelle les dents (4) du capot de protection (3), dans leur plan d'extension, dépassent les dents de l'élément de coupe fixe (20') de 0,2 mm ou moins et plus particulièrement de 0,1 mm ou moins.
  12. Tondeuse selon l'une des revendications précédentes, dans laquelle la largeur (b) des dents (4) du capot de protection (3) est de 0,6 mm à 0,8 mm.
EP08802839A 2007-10-22 2008-10-09 Tondeuse Active EP2205412B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710050379 DE102007050379A1 (de) 2007-10-22 2007-10-22 Haartrimmer
PCT/EP2008/008518 WO2009052952A1 (fr) 2007-10-22 2008-10-09 Tondeuse

Publications (2)

Publication Number Publication Date
EP2205412A1 EP2205412A1 (fr) 2010-07-14
EP2205412B1 true EP2205412B1 (fr) 2013-03-13

Family

ID=40104655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08802839A Active EP2205412B1 (fr) 2007-10-22 2008-10-09 Tondeuse

Country Status (6)

Country Link
US (1) US8850707B2 (fr)
EP (1) EP2205412B1 (fr)
JP (1) JP5242693B2 (fr)
CN (1) CN101952090B (fr)
DE (1) DE102007050379A1 (fr)
WO (1) WO2009052952A1 (fr)

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EP3854538A1 (fr) 2020-01-23 2021-07-28 Braun GmbH Tondeuse à barbe électrique
EP4112245A1 (fr) * 2021-06-28 2023-01-04 Braun GmbH Kit de coupe de cheveux
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JP2011500234A (ja) 2011-01-06
CN101952090A (zh) 2011-01-19
US8850707B2 (en) 2014-10-07
US20110016723A1 (en) 2011-01-27
JP5242693B2 (ja) 2013-07-24
CN101952090B (zh) 2013-07-10
EP2205412A1 (fr) 2010-07-14
WO2009052952A1 (fr) 2009-04-30
DE102007050379A1 (de) 2009-04-23

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