EP2205412B1 - Hair trimmer - Google Patents

Hair trimmer 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
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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)
French (fr)
Other versions
EP2205412A1 (en
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
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Publication date
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Publication of EP2205412A1 publication Critical patent/EP2205412A1/en
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Publication of EP2205412B1 publication Critical patent/EP2205412B1/en
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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.

Description

Die Erfindung betrifft einen Haartrimmer mit einem feststehenden Schneidelement, das an der Frontseite Zähne aufweist und einem oszillatorisch gegen das feststehende Schneidelement bewegbaren Schneidelement, dass an der Frontseite Zähne aufweist, sodass Haare, die bei der Verwendung des Haartrimmers zwischen die Zähne des feststehenden und bewegbaren Schneidelementes gelangen, abgetrennt werden.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.

Haartrimmer der genannten Art sind bekannt. Sie werden etwa im professionellen Haarpflegebereich von Friseuren verwendet oder vom Privatnutzer zum Trimmen von Haupt- oder Barthaar.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.

Als weiterer Anwendungsbereich ist das Bodygrooming hinzugekommen, bei dem der Benutzer vor allem einen ästhetisch wirksamen Effekt durch eine gründliche Haarentfernung in anderen Körperregionen, etwa im Achselbereich, in der Bikinizone oder im Intimbereich erzielen will. Nachteil der bekannten Trimmer ist, dass entweder der Abstand zwischen den Zähnen der Schneidelemente so groß ist, dass die dünnere Haut in den genannten Körperregionen zwischen die Zähne gelangen kann und dann schmerzhaft eingeschnitten wird oder das bei enger stehenden Zähnen der Schneidelemente die Zähne selbst so schmal ausgeführt sein müssen, dass sie in die relativ weiten Haarkanäle in der Haut der genannten Körperregionen einfädeln und diese beim Bewegen des Haartrimmers schmerzhaft aufreißen können.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.

Aus der Patentschrift DE19633824C1 ist ein Rasierapparat bekannt, der einen als Langhaarschneider ausgeführten Haartrimmer der eingangs genannten Art aufweist. Zum Schutz vor Hautirritationen weist der Langhaarschneider ein Hautschutzelement auf, das frontseitig vor den gegeneinander bewegbaren Schneidelementen angeordnet ist und die Haut vor dem direkten Kontakt mit den Schneidzähnen der Schneidelemente schützt. Nachteilig bei diesem Hautschutzelement ist allerdings, dass bei einer Rasur in den genannten Körperregionen die Haut in Kontakt mit dem metallenen, feststehenden Schneidelement kommen und dieser kalte Kontakt vom Nutzer als unangenehm empfunden werden kann. Weiterhin kann durch die federnd angeordneten Finger des Hautschutzelementes beim Vor- und Zurückbewegen des Haartrimmers auf der Haut eine Falte der Haut zwischen das Hautschutzelement und die Schneidelemente geklemmt werden, was dazu führen kann, dass die Haut zwischen die Zähne des feststehenden Schneidelement einfädelt und dann eingeschnitten wird.From the patent DE19633824C1 a razor is known which has a trimmer designed as a long hair trimmer of the type mentioned. To protect against skin irritation, 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, however, 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. Furthermore, 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.

Das US-Patent 4,724,614 offenbart einen Aufsatz für ein Haarschneidegerät. Der Aufsatz kann auf den Schneidkopf des Haarschneidegeräts ähnlich einem Distanzkamm aufgesetzt werden.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 offenbart ein anderes Haarschneidegerät, welches mit einem Kamm versehen ist. US 1,761,550 offenbart ein Haarschneidegerät, bei welchem ein Aufsatz mit einer Zahnreihe aufgesteckt werden kann, US 1,716,465 und die Patentschrift CH 247791 offenbaren weitere elektrische Haarschneidegeräte ähnlicher Art. 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.

Aufgabe der vorliegenden Erfindung ist es, einen verbesserten Haartrimmer zur Verfügung zu stellen, bei dem ein hoher Benutzungskomfort und eine Verhinderung von schmerzhaften Hautverletzungen erreicht werden bei gleichzeitig gründlichem Abschneiden der Haare nahe der Hautoberfläche.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.

Die Aufgabe wird durch einen Haartrimmer gemäß den Merkmalen des Anspruchs 1 erreicht. Die abhängigen Ansprüche geben weiterbildende Ausführungsformen an.The object is achieved by a hair trimmer according to the features of claim 1. The dependent claims indicate further embodiments.

Der Haartrimmer nach Anspruch 1 weist eine Schutzauflage auf, die auf dem feststehenden Schneidelement angeordnet und zur Auflage der Haartrimmers bei der Benutzung auf der Haut der Benutzers dient. Durch eine geeignete Materialwahl und/oder Oberflächenbearbeitung kann dann ein angenehmes Gefühl beim Benutzer erreicht werden, etwa dadurch, dass als Material der Schutzauflage ein Kunststoff gewählt wird, sodass beim Hautkontakt kein kaltes Gefühl entsteht. Dadurch, dass die Schutzauflage Zähne im Frontbereich hat, können diese Zähne der Schutzauflage bis zum Frontbereich des feststehenden Schneidelements reichen ohne das dadurch notwendigerweise die Zähne des feststehenden Schneidelementes abgedeckt werden. Da die Zähne der Schutzauflage mit den Zähnen des feststehenden Schneidelementes frontseitig abschließen bzw. die Zähne des feststehenden Schneidelementes nur geringfügig überragen, wird sowohl erreicht, dass die Haut des Benutzers bei einer üblichen Benutzung nicht mit den Zähnen des feststehenden Schneidelementes in Berührung kommt bzw. nur mit der Frontseite der Zähne in Berührung kommt und gleichzeitig sorgen die Zähne der Schutzauflage auch dafür, dass die Zähne des feststehenden Schneidelementes nicht in Haarkanäle einfädeln können, da die frontseitig abschließenden oder geringfügig überstehenden Zähne der Schutzauflage dies durch ihre zusätzliche frontseitige Auflagefläche verhindern. Die frontseitigen Auflageflächen der Zähne der Schutzauflage sind also so zu wählen, dass ein Einfädeln in Haarkanäle im Wesentlichen nicht vorkommen kann.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. By a suitable choice of material and / or surface treatment then 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. Because 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. Since 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.

Die Zähne der Schutzauflage können sich zwar geringfügig über die Zähne des feststehenden Schneidelementes hinaus erstrecken, diese Erstreckung ist vorzugsweise nur in der Erstreckungsebene der Zähne des feststehenden Schneidelementes vorgesehen, sodass die Zähne der Schutzauflage sich dann nicht vor die Frontseite der Zähne des feststehenden Schneidelementes erstrecken. Dies ermöglicht, dass die Frontseite der Zähne des feststehenden Schneidelementes sehr nah an die Hautoberfläche gebracht werden kann, was ein Abschneiden bzw. Abscheren der Haare ebenfalls sehr nah an der Hautoberfläche erlaubt. Bekannte Schutzauflagen erlauben dies nicht. Mit "geringfügig" ist hier gemeint, dass die Zähne der Schutzauflage die Zähne des feststehenden Schneidelementes nicht weiter überragen als einer der frontseitigen Dicke der Zähne des feststehenden Schneidelementes entsprechenden Länge.Although 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.

In einer Ausführungsform des Haartrimmers ist der Mittenabstand der Zähne der Schutzauflage größer als der Mittenabstand der Zähne des feststehenden Schneidelementes. Hierbei ist es insbesondere interessant, wenn der Mittenabstand der Zähne der Schutzauflage ein ganzzahliges Vielfaches des Mittenabstandes der Zähne des feststehenden Schneidelementes ist. Dann entsteht ein regelmäßiges Zuordnungsmuster zwischen den Zähnen der Schutzauflage und den Zähnen des feststehenden Schneidelementes.In one embodiment of the hair trimmer, 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.

In einer weiteren Ausführungsform des Haartrimmers sind die Zähne der Schutzauflage breiter als die Zähne des feststehenden Schneidelementes. Die erhöhte Breite der Zähne der Schutzauflage unterstützt noch die Verhinderung des Einfädelns von Zähnen des feststehenden Schneidelementes in Haarkanäle.In a further embodiment of the hair trimmer, 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.

In einer anderen Ausführungsform überdeckt je ein Zahn der Schutzauflage mindestens einen Zwischenraum zwischen zwei Zähnen des feststehenden Schneidelementes. Dadurch können die Zähne der Schutzauflage besonders breit im Vergleich zu den Zähnen des feststehenden Schneidelementes konstruiert werden, was die Verhinderung des Einfädelns von Zähnen des feststehenden Schneidelementes in Haarkanäle besonders unterstützt. Wird exakt ein Zwischenraum zwischen den Zähnen des feststehenden Schneidelementes überdeckt, so wird durch die aufliegenden Zähne der Schutzauflage auch nur je ein Zwischenraum in seiner Schneideffizienz beeinflusst.In another embodiment, each one tooth of the protective overlay covers at least one space between two teeth of the fixed cutting element. Thereby, 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.

In einer Modifikation der vorangegangenen Ausführungsform hat ein Zahn der Schutzauflage einen Vorsprung, der in den überdeckten Zwischenraum zwischen zwei Zähnen des feststehenden Schneidelementes hineinragt. Da die Schutzauflage zwar im Wesentlichen spaltfrei auf dem feststehenden Schneidelement aufliegt (in manchen Ausführungsformen ist das feststehenden Schneidelement mit der Schutzauflage vercrimpt), die Zähne der Schutzauflage aber federnd auf dem feststehenden Schneidelement aufliegen, können sich bei der Benutzung des Haartrimmers Haare zwischen die Zähne der Schutzauflage und Zähne des feststehenden Schneidelementes einklemmen, worauf diese Haare bei Bewegung des Trimmers gegen die Haut schmerzhaft ausgerissen werden können. Der in den Zwischenraum hineinragende Vorsprung verhindert effektiv, dass sich Haare zwischen die Zähne einklemmen können, insbesondere, wenn der Vorsprung frontseitig mit den Zähnen des feststehenden Schneidelementes abschließt oder sich geringfügig über die Front der Zähne des feststehenden Schneidelementes hinaus erstreckt.In a modification of the foregoing embodiment, a tooth of the protective pad has a projection which projects into the overlapped space between two teeth of the fixed cutting element. Although 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.

In einer weiteren Ausführungsform sind die Zähne der Schutzauflage frontseitig abgerundet, was ein angenehmes Hautgefühl bei der Verwendung des Haartrimmers unterstützt.In a further embodiment, the teeth of the protective pad are rounded at the front, which supports a pleasant feeling on the skin when using the hair trimmer.

In einer anderen Ausführungsform verringert sich die Höhe der Zähne der Schutzauflage zur Frontseite des Haartrimmers hin, was eine gründliche Haarentfernung unterstützt, da dann die Schneidelemente sehr nahe an die Haut herangeführt werden können und Haare sehr nah an der Haut abgetrennt werden.In another embodiment, 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.

In einer weiteren Ausführungsform ist die Schutzauflage zumindest im Bereich der Zähne spaltfrei mit dem feststehenden Schneidelement verbunden, etwa durch Kleben. Bei einer spaltfreien Verbindung können sich keine Haare mehr zwischen den Zähnen der Schutzauflage und den Zähnen des feststehenden Schneidelementes einklemmen.In a further embodiment, 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.

In einer Ausführungsform des Haartrimmers ist der Mittenabstand zwischen den Zähnen des feststehenden Schneidelementes 0.1 bis 0.9 mm, vorzugsweise 0.3 bis 0.7 mm. Insbesondere bei einem Mittenabstand von etwa 0.5 mm ± 0.05 mm und einer Mittenbreite der Zähne des feststehenden Schneidelementes von etwa 0.3 mm ± 0.03 mm haben die Zähne des feststehenden Schneidelementes noch genügend Stabilität, es wird aber auch verhindert, dass Haut zwischen die Zähne des feststehenden Schneidelementes einfädeln kann, da Hautfalten typischerweise dicker sind als der Zwischenraum von etwa 0.2 mm zwischen den Zähnen des feststehenden Schneidelementes. In einer Ausführungsform ist das feststehende Schneidelement aus einem Metallblech mit einer Dicke von 0.1 bis 0.5 mm, vorzugsweise 0.25 bis 0.35 mm hergestellt. Dies bietet dem Blech genügend Stabilität und führt auch zu einer gründlichen Haarentfernung, da das Abtrennen dann wegen der relativ geringen Blechstärke sehr nah an der Hautoberfläche durchgeführt werden kann.In one embodiment of the hair trimmer, 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. In particular, with a center distance of about 0.5 mm ± 0.05 mm and a central width of the teeth of the fixed cutting element of about 0.3 mm ± 0.03 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. In one embodiment, 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.

Die Erfindung wird im Weiteren anhand von exemplarischen Ausführungsformen im Bezug auf mehrere Figuren beschrieben. In den Figuren ist

Fig. 1
ein exemplarisches Beispiel für ein Ausführungsbeispiel eines Haartrimmers in einer seitlichen Frontansicht,
Fig. 2
eine Explosionsdarstellung des Kopfbereiches des Haartrimmers nach Fig. 1,
Fig. 3
eine Aufsicht auf den Kopfbereich des Haartrimmers nach Fig. 1,
Fig. 4
ein vergrößerter Detailausschnitt der Aufsicht des Haartrimmers aus Fig. 3,
Fig. 5
eine seitliche Darstellung eines vertikalen, rechtwinklig zur Frontseite aufgeschnittenen Kopfes eines Haartrimmers,
Fig. 6
eine Detaildarstellung der Zähne der Schneidelemente und der Schutzauflage in einem schräg nach oben verlaufende Blickwinkel.
The invention will be described below with reference to exemplary embodiments with reference to several figures. In the figures is
Fig. 1
an exemplary example of an embodiment of a hair trimmer in a lateral front view,
Fig. 2
an exploded view of the head portion of the hair trimmer after Fig. 1 .
Fig. 3
a view of the head area of the hair trimmer after Fig. 1 .
Fig. 4
an enlarged detail of the top view of the hair trimmer Fig. 3 .
Fig. 5
a side view of a vertical, cut perpendicular to the front of a hair trimmer head,
Fig. 6
a detailed view of the teeth of the cutting elements and the protective pad in an obliquely upward viewing angle.

In Fig. 1 ist ein exemplarisches Beispiel für einen Haartrimmer 1 gezeigt. In der gezeigten Ausführungsform ist eine Trimmereinheit 20, die (wie in Fig. 2 zu sehen ist) aus einem feststehenden Schneidelement und einem bewegbaren Schneidelement besteht, am Kopf des Haartrimmers angeordnet und ein Nassrasierer mit einer Klingenkartusche 40 ist verschiebbar am Rücken des Haartrimmers angeordnet, sodass neben (oder gleichzeitig zu) dem elektrischen Haarentfernen auch ein Haarentfernen durch Klingenrasur erlaubt wird. Auf der Trimmereinheit 20 ist eine Schutzauflage 3 angeordnet. Die Schutzauflage besteht in dieser Ausführungsform aus einem Plastikmaterial, das ein angenehmes Hautgefühl erzeugt, wenn der Haartrimmer mit der Schutzauflage auf die Haut aufgelegt und über die Haut gezogen wird.In Fig. 1 an exemplary example of a hair trimmer 1 is shown. In the embodiment shown, 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. 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 ist eine Explosionsdarstellung des Kopfbereiches des Haartrimmers aus Fig. 1 ohne explodierte Darstellung des Nassrasierers. In dieser Ausführungsform ist die Schutzauflage 3 einstückig mit einem Kunststoffrahmen 30 hergestellt worden, etwa mittels eines Plastikspritzgussverfahrens. Zur Verstärkung der Gesamtstruktur ist ein Metallrahmen 31 mit dem Plastikrahmen 30 verbunden. Die Trimmereinheit 20 besteht aus einem feststehenden Schneidelement 20' (Kamm) und einem linear oszillatorisch gegen das feststehende Schneidelement 20' bewegbaren Schneidelement 20" (Klinge). Das feststehende Schneidelement 20' wird hier kopfseitig mit der Schutzauflage vercrimpt. Das feststehende Schneidelement 20' hat frontseitig angeordnete Zähne, die mit ebenfalls frontseitig angeordneten Zähnen des bewegbaren Schneidelementes 20" derart zusammenwirken, dass Haare, die zwischen die Zähne des feststehenden Schneidelementes 20' einfädeln durch die oszillatorische Bewegung des bewegbaren Schneidelementes 20" abgetrennt werden, wobei der Abtrennungsprozess je nach Ausführung der Zähne des bewegbaren Schneidelementes 20" ein Abschneiden oder ein Abscheren ist. Das bewegbare Schneidelement 20" sitzt auf einem Mitnehmer 21, der fußseitig eine Führung aufweist, in die ein Bewegungsübertrager (nicht gezeigt) eingreift, um den Mitnehmer 21 mit dem bewegbaren Schneidelement 20" linear oszillatorisch, parallel zur Frontseite gegen das feststehende Schneidelement 20' zu bewegen. Mittels eines Andruckelementes 22, in dem Federn angeordnet sind, wird das bewegbare Schneidelement 20" gegen das feststehende Schneidelement 20' gedrückt. Fig. 2 is an exploded view of the head portion of the hair trimmer Fig. 1 without exploded representation of the wet shaver. In this embodiment, 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. To reinforce the overall structure, 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. 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 ist eine Aufsicht auf den Kopf des Haartrimmers 1 nach Fig. 1. Hier ist zu erkennen, dass die Schutzauflage 3 im Frontbereich Zähne 4 aufweist. Zwischen den Zähnen 4 der Schutzauflage 3 sind Zähne des feststehenden Schneidelementes 20' erkennbar. Mit einem gestrichelt gezeichneten Rahmen ist ein Ausschnitt A bestimmt, der in Fig. 4 vergrößert dargestellt ist. 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 zeigt den vergrößerten Detailausschnitt A aus Fig. 3. Es sind fünf Zähne 4 der Schutzauflage 3 erkennbar. Die Zähne 4 der Schutzauflage 3 erstrecken sich frontseitig geringfügig über die Zähne des feststehenden Schneidelementes 20' (was in Fig. 6 besser erkennbar ist). Die Zähne 4 der Schutzauflage erstrecken sich dabei nur in ihrer Erstreckungsebene, die auch die Erstreckungsebene der Zähne des feststehenden Schneidelementes 20' ist, geringfügig vor die Zähne des feststehenden Schneidelementes 20'. Die Zähne 4 der Schutzauflage 3 erstrecken sich nicht vor die Frontseite der Zähne des feststehenden Schneidelementes 20'. In dieser Ausführungsform ist der Mittenabstand M zwischen den Zähnen 4 der Schutzauflage dreimal so groß wie der Mittenabstand M' (welcher in Fig. 6 gezeigt ist) zwischen den Zähnen des feststehenden Schneidelementes 20' und die Breite b der Zähne 4 der Schutzauflage 3 ist etwa zweieinhalb mal so groß wie die Breite b' der Zähne des feststehenden Schneidelementes 20'. Es sind Zähne des bewegbaren Schneidelementes 20" zu erkennen. Der Mittenabstand der Zähne 4 der Schutzauflage 3 beträgt hier 1.65 mm und die Breite b beträgt 0.7 mm. Diese Werte sind allerdings nur exemplarisch zu verstehen. Die Breite b' der Zähne des feststehenden Schneidelementes beträgt etwa 0.3 mm. Fig. 4 shows the enlarged detail A from Fig. 3 , There are five 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 '. In this embodiment, 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. 6 shown) between the teeth of the fixed cutting element 20 'and the width b of the teeth 4 of the protective pad 3 is about two and a half times the width b' of the teeth of the fixed cutting element 20 '. They are teeth of the movable cutting element The center distance of the teeth 4 of the protective overlay 3 here is 1.65 mm and the width b is 0.7 mm, but these values are only to be understood as examples The width b 'of the teeth of the fixed cutting element is about 0.3 mm.

Fig. 5 zeigt einen seitlich-frontalen Blick auf den vertikal, rechtwinklig zur Frontseite geschnittenen Kopfbereich des Haartrimmers mit der Trimmereinheit. Das feststehende Schneidelement 20' ist hinter den im Frontbereich angeordneten Zähnen stufenförmig nach oben gebogen, sodass die Reibung zwischen dem feststehenden Schneidelement 20' und dem bewegbaren Schneidelement 20" minimiert wird. Die Zähne des feststehenden Schneidelementes 20' und die Zähne des bewegbaren Schneidelementes 20" liegen parallel aneinander an und definieren so eine Schneidebene. Das bewegbare Schneidelement 20" ist auf Vorsprüngen des Mitnehmers 21 aufgepresst. Die Vorsprünge greifen auch in Präzisionslanglöcher des feststehenden Schneidelementes 20' ein, um eine parallele Führung bei der linear-oszillatorischen Bewegung des bewegbaren Schneidelementes 20" zu gewährleisten. Es ist erkennbar, dass sich die Höhe der Zähne 4 der Schutzauflage 3 zur Frontseite hin verringert und dass die Zähne 4 der Schutzauflage 3 im Frontbereich abgerundet ausgestaltet sind. Die Höhe der Zähne 4 der Schutzauflage beträgt hier etwa 0.5 mm. Weiterhin liegen die Zähne 4 der Schutzauflage 3 im Wesentlichen spaltfrei auf dem feststehenden Schneidelement 20' auf. Da das feststehende Schneidelement 20' in der beschriebenen Ausführungsform im hochgebogenen Bereich mit der Schutzauflage 3 vercrimpt ist, liegen die Zähne 4 der Schutzauflage 3 nur locker auf den Zähnen des feststehenden Schneidelementes auf. Haare, die sich bei der Benutzung des Haartrimmers in den minimalen Spalt zwischen den Zähnen 4 der Schutzauflage 3 und den Zähnen des feststehenden Schneidelementes 20' einklemmen, können diesen minimalen Spalt gegen die Federkraft der Vercrimpung im hinteren Bereich der Schutzauflage aufstemmen und zwischen den Zähnen 4 der Schutzauflage 3 und den Zähnen des feststehenden Schneidelementes 20' fest eingeklemmt werden, sodass sie schmerzhaft aus der Haut gerissen werden können und auch die Trimmereinheit verstopfen, sodass keine weiteren Haare einfädeln können. Um das zu verhindern, kann vorgesehen werden, dass die Zähne 4 der Schutzauflage 3 spaltfrei mit den Zähnen des feststehenden Schneidelementes 20' verbunden werden, etwa durch Kleben mit einem geeigneten Klebstoff. Eine andere Möglichkeit ist, die Zähne mit einem geeigneten Vorsprung zu versehen. Dies wird im nächsten Abschnitt mit Bezug auf Fig. 6 beschrieben. 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". It can be seen that 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. Furthermore, 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. In order to prevent this, it can be provided that 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 zeigt als Detailbild die Zähne des beweglichen Schneidelementes 20", die Zähne des feststehenden Schneidelementes 20' und die Zähne 4 der Schutzauflage 3 unter einem schräg nach oben gerichteten Blickwinkel. Die Zähne des bewegbaren Schneidelementes 20" sind, wie üblich, gegen die Zähne des feststehenden Schneidelementes 20' von der Frontseite zurückversetzt. Die Zähne des bewegbaren Schneidelementes 20" haben, wie üblich, einen anderen, hier einen größeren Mittenabstand als die Zähne des feststehenden Schneidelementes 20', sodass die Schneidereignisse entlang der Frontseite nicht wie bei gleichem Mittenabstand zu jeweils einem Zeitpunkt auftreten und die Energiequelle punktuell belasten, sondern nahezu kontinuierlich Schneidereignisse stattfinden und die Energiequelle ebenfalls kontinuierlich gleichmäßig belastet wird. Die Zähne 4 der Schutzauflage ragen in dieser Ausführungsform nur in ihrer Erstreckungsebene geringfügig über die Zähne des feststehenden Schneidelementes 20' heraus, ohne dass die Zähne 4 der Schutzauflage frontseitig vor die Zähne der Schneidelemente gezogen sind, wie dies etwa bei bekannten Distanzkämmen bzw. Schutzkämmen der Fall ist. (Ein solcher bekannter Schutzkamm ist etwa in der DE 103 55 154 A1 beschrieben. Dort müssen die Zähne des Schutzkamms frontseitig deutlich vor die Zähne des Scherkammes erstrecken, denn die Zähne des Schutzkammes sorgen dort für eine thermische Isolierung des beheizten Scherkammes.) Die Zähne 4 der Schutzauflage 3 ragen hier nicht mehr als die Blechdicke des feststehenden Schneidelementes 20' in ihrer Erstreckungsebene über die Zähne des feststehenden Schneidelementes 20' heraus, wobei die geringfügige Erstreckung insbesondere eine Länge von 0.2 mm oder weniger hat und darüber hinaus insbesondere eine Länge von 0.1 mm oder weniger hat. Im gezeigten Ausführungsbeispiel beträgt die Blechdicke des feststehenden Schneidelementes 0.35 mm und die Zähne 4 der Schutzauflage ragen etwa 0.1 mm über die Zähne des feststehenden Schneidelementes 20' hinaus. Weiterhin ist die Breite b eines Zahnes 4 der Schutzauflage 3 etwa zweieinhalb Mal so groß wie die Breite b' (Fig. 4 zeigt die Breiten b und b') der Zähne des feststehenden Schneidelementes 20' und ein Zahn 4 der Schutzauflage überdeckt je einen Zwischenraum zwischen zwei Zähnen des feststehenden Schneidelementes 20'. In dem gezeigten Beispiel beträgt die Breite b etwa 0.7 mm und der Mittenabstand M' beträgt etwa 0.55 mm, sodass ein Zahn 4 der Schutzauflage je zwei Zähne des feststehenden Schneidelementes 20' und den zwischen ihnen liegenden Zwischenraum überdeckt. Der Mittenabstand M (in wie in Fig. 4 gezeigt) der Zähne 4 der Schutzauflage ist dreimal so groß wie der Mittenabstand M' der Zähne des feststehenden Schneidelementes 20', sodass jeweils zwei Zwischenräume zwischen den Zähnen des feststehenden Schneidelementes 20' zwischen zwei Zähnen 4 der Schutzauflage unbedeckt bleiben. Je ein Zahn 4 der Schutzauflage hat weiterhin einen Vorsprung 5, der in den von dem Zahn 4 der Schutzauflage bedeckten Zwischenraum zwischen zwei Zähnen des feststehenden Schneidelementes 20' hineinragt (der Vorsprung hat dabei eine Höhe von etwa 0.2 mm und eine Länge von 0.5 mm), wobei der Vorsprung hier frontseitig geringfügig über die Front der Zähne des feststehenden Schneidelementes 20' hinausragt (beim gezeigten Beispiel sind dies etwa 0.04 mm) und so effektiv verhindert, dass sich Haare in einen verbleibenden Spalt zwischen den Zähnen 4 der Schutzauflage und den Zähnen des feststehenden Schneidelementes 20' einklemmen können. Auch wenn die Vorsprünge 5 hier als Teil der Ausführungsform nach Fig. 5 und Fig. 6 gezeigt sind, sind die Vorsprünge 5 als optionales Merkmal zu verstehen, das in der Ausführungsform gemäß Fig. 5 und Fig. 6 auch weggelassen werden kann. Durch die Größe der Zähne 4 der Schutzauflage wird auch verhindert, dass die Zähne des feststehenden Schneidelementes 20' in Haarkanäle einfädeln können und diese dann aufreißen. Ein typischer Wert für die frontseitige Breite b der Zähne der Schutzauflage beträgt etwa 0.6 mm bis 0.8 mm, um ein Einfädeln in Haarkanäle im Wesentlichen zu vermeiden. 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. In this embodiment, 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. There, 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. In the illustrated embodiment, 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. Furthermore, 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 '. In the example shown, 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. 4 shown) of 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. Depending on 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. Although 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. A hair trimmer (1) with
    • a stationary cutting element (20') that has teeth on the front side,
    • a cutting element (20") that has teeth on the front side, that is movable in oscillation counter to the stationary cutting element (20'), such that hairs that end up between the teeth of the stationary cutting element and movable cutting element during use of the hair trimmer (1) are trimmed, and
    • a protective overlay (3) arranged on the stationary cutting element (20'), which protective overlay (3) is provided to overlay the hair trimmer (1) on the skin of the user and which has teeth (4) on the front side,
    wherein the teeth (4) of the protective overlay (3) terminate with the teeth of the stationary cutting element (20') at the front side, or extend only slightly beyond the teeth of the stationary cutting element (20') in their plane of extension, and the teeth (4) of the protective overlay (3) rest at least essentially without gaps on the stationary cutting element (20'), wherein the hair trimmer (1) is characterized in that a respective tooth (4) of the protective overlay (3) covers at least one gap between two teeth of the stationary cutting element (20').
  2. The hair trimmer according to claim 1, wherein the center distance (M) of the teeth (4) of the protective overlay (3) is greater than the center distance (M') of the teeth of the stationary cutting element (20').
  3. The hair trimmer according to claim 1 or claim 2, wherein the width (b) of the teeth (4) of the protective overlay (3) is greater than the width (b') of the teeth of the stationary cutting element (20').
  4. The hair trimmer according to claim 1, 2 or 3, wherein at least one tooth (4) of the protective overlay (3) has a projection (5) that protrudes into the gap covered by the tooth (4) of the protective overlay (3).
  5. The hair trimmer according to any one of the claims 1 to 4, wherein the teeth (4) of the protective overlay (3) are blunted on the front side.
  6. The hair trimmer according to any one of the claims 1 to 5, wherein the height of the teeth (4) of the protective overlay (3) with which these rest on the stationary cutting element declines towards the front side.
  7. The hair trimmer according to any one of the claims 1 to 6, wherein the protective overlay (3) is connected without gaps with the stationary cutting element (20'), at least in the region of the teeth of the stationary cutting element (20').
  8. The hair trimmer according to any one of the claims 1 to 7, wherein the center distance (M') between the teeth of the stationary cutting element (20') is 0.1 to 0.9 mm, preferably 0.3 to 0.7 mm.
  9. The hair trimmer according to any one of the claims 1 to 8, wherein the stationary cutting element (20') is manufactured from a metal plate with a material thickness from 0.1 to 0.5 mm, preferably 0.25 to 0.35 mm.
  10. The hair trimmer according to any one of the claims 1 to 9, wherein the teeth (4) of the protective overlay (3) do not extend further in their plane of extension in front of the teeth of the stationary cutting element (20') than the thickness of the teeth of the stationary cutting element (20').
  11. The hair trimmer according to claim 10, wherein the teeth (4) of the protective overlay (3) extend in their plane of extension by 0.2 mm or less -- and in particular by 0.1 mm or less -- in front of the teeth of the stationary cutting element (20').
  12. The hair trimmer according to any one of the preceding claims, wherein the width (b) of the teeth (4) of the protective overlay (3) is 0.6 mm to 0.8 mm.
EP08802839A 2007-10-22 2008-10-09 Hair trimmer Active EP2205412B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710050379 DE102007050379A1 (en) 2007-10-22 2007-10-22 hair trimmer
PCT/EP2008/008518 WO2009052952A1 (en) 2007-10-22 2008-10-09 Hair trimmer

Publications (2)

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EP2205412A1 EP2205412A1 (en) 2010-07-14
EP2205412B1 true EP2205412B1 (en) 2013-03-13

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EP08802839A Active EP2205412B1 (en) 2007-10-22 2008-10-09 Hair trimmer

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US (1) US8850707B2 (en)
EP (1) EP2205412B1 (en)
JP (1) JP5242693B2 (en)
CN (1) CN101952090B (en)
DE (1) DE102007050379A1 (en)
WO (1) WO2009052952A1 (en)

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Publication number Publication date
CN101952090B (en) 2013-07-10
US20110016723A1 (en) 2011-01-27
WO2009052952A1 (en) 2009-04-30
EP2205412A1 (en) 2010-07-14
CN101952090A (en) 2011-01-19
DE102007050379A1 (en) 2009-04-23
JP2011500234A (en) 2011-01-06
JP5242693B2 (en) 2013-07-24
US8850707B2 (en) 2014-10-07

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