EP0361200B1 - Shaving head for dry shavers - Google Patents

Shaving head for dry shavers Download PDF

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Publication number
EP0361200B1
EP0361200B1 EP89116854A EP89116854A EP0361200B1 EP 0361200 B1 EP0361200 B1 EP 0361200B1 EP 89116854 A EP89116854 A EP 89116854A EP 89116854 A EP89116854 A EP 89116854A EP 0361200 B1 EP0361200 B1 EP 0361200B1
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EP
European Patent Office
Prior art keywords
frame
shaving head
shaving
exchangeable
foil
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.)
Expired - Lifetime
Application number
EP89116854A
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German (de)
French (fr)
Other versions
EP0361200A1 (en
Inventor
Werner Messinger
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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Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Priority to AT89116854T priority Critical patent/ATE71325T1/en
Publication of EP0361200A1 publication Critical patent/EP0361200A1/en
Application granted granted Critical
Publication of EP0361200B1 publication Critical patent/EP0361200B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B26B19/046—Cutters being movable in the cutting head

Definitions

  • the invention relates to a shaving head for dry shavers with the features specified in the preamble of the main claim.
  • Shaving head constructions of this type which are known, for example, from DE-A-2843657, have the advantage that they can be easily dismantled and reassembled for cleaning and replacing damaged or worn shaving foils, even by laymen and inexperienced users, without this the sensitive shaving foil is exposed to the risk of damage.
  • the interchangeable frame and the mounting of the shaving foil thereon can be produced in one injection molding process, so that additional operations are unnecessary.
  • the invention has the object to ensure with a shaving head of the type mentioned that the shaving foil can easily follow the yielding movement of the lower knife under shaving pressure, but remains tied against entrainment by the working movement of the lower knife, and that The shaving foil together with the removable frame can be easily removed at any time.
  • the inventive holder and leadership of the change frame in the shaving head frame can be realized in various ways.
  • the arrangement and design of the tabs allows the elasticity to be varied from the longitudinal sides of the frame to the tabs according to their separate functions by the choice of the material thickness, and to set a desired friction between the surfaces of the tabs and the sides of the shaving head frame by selecting the pressure and the coefficient of friction , which can dampen vibrations. Further advantageous and expedient special features for further developing the invention can be found in subclaims 2 to 6.
  • the shaving head for dry shavers shown in Fig. 1 consists essentially of a shaving head frame 1 of conventional design, which is detachably placed on the apparatus housing 2.
  • a circumferentially closed, box-shaped interchangeable frame 3 can be used, which consists of a limited elastic material in which a shaving foil 4 is arched.
  • This shaving foil 4 interacts with a lower knife 5 ground according to its curvature, which is pressed into the curvature of the shaving foil 4 by a spring 6 and is set into a reciprocating movement by a motor (not shown) via a rocker arm 7.
  • the removable frame 3 shown in FIG. 3 in its removed state and without a shaving foil has two transverse sides 8 and 9 and two longitudinal sides 10 and 11, on the lower edges of which tabs 12 and 13 are formed somewhat offset inwards. These tabs are elastic and in the rest position shown in FIG. 3 are set at a small angle to the outside.
  • a part of the holder and guide means for the interchangeable frame 3 in the shaving head frame 1 is attached in the form of openings 14, into which, as another part of the holder and guide means, hook-shaped projections 15, which on the associated inner surfaces 16 of the Shaving head frame 1 are provided to intervene.
  • the fits between the openings and projections are selected in part as a narrow sliding fit, which only allows vertical movement but no substantial movement in the working direction of the lower knife, while for the yielding movement of the removable frame and shaving foil in or against the arrow direction A, a clearance fit corresponding to this movement stroke is provided, as shown in Fig. 1.
  • the mounting and guide means can of course also be interchanged, ie the projections 15.1 are on the tabs 12, 13 and the openings 14.1 on the inner surfaces 16 of the shaving head frame 1.
  • the height of the openings 14 and 14 ' is slightly larger than that possible way of the lower knife 5 under shaving pressure ie opposite to the direction of arrow A and the selected displacement path B between the changing frame 3 and the shaving head frame 1, which is limited at the bottom by placing the lower edge of the changing frame on the upper edge of the shaving head frame.
  • Above the transverse sides 8, 9 of the interchangeable frame 3 rise end cheeks 17, 18 which are provided with sliding knobs 21 on their outer surfaces facing the end cheeks 19, 20 of the shaving head frame 1.
  • the distance between the end cheeks 17, 18 of the interchangeable frame from each other has a certain excess compared to the corresponding distance between the end cheeks 19, 20 of the shaving head frame 1, so that the end cheek pairs 17-19 and 18-20 abut against one another with a slight tension via the sliding knobs 21.
  • the shaving foil 4 is fastened to the long sides 10 and 11 of the interchangeable frame, in this case generally rigid, for example by welding or extrusion coating.
  • the interchangeable frame 3 or 3.1 is deformed inward by pressure on its long sides 10, 11 so that it can be inserted with its tabs 12, 13 into the shaving head frame 1, 1.1, 1.2 from above until the holding means snap into place .
  • the tabs 12, 13 engage behind the associated inner surfaces 16 of the shaving head frame and rest there with slight tension.
  • the interchangeable frame together with the clamped-in single or multiple-curved shaving foil and it with this cooperating bottom knife arrangement can yield to the inside of the housing without the shaving foil bulging out and the contact area between the two shear parts being reduced.
  • the corresponding surfaces of the interchangeable frame which bear against the walls of the shaving head frame with slight tension ensure that the displacement movement takes place with a certain amount of friction, with which fluttering and vibrations of the interchangeable frame are largely eliminated.
  • the additional construction effort is low, so that economical production is also ensured.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Drilling Tools (AREA)

Abstract

The invention is directed to a shaving head for dry shaving apparatus, comprising a shaving head frame arranged on the shaver housing so as to be removable therefrom and a circumferentially closed, box-shaped exchangeable frame of a material of limited elasticity which is insertable into the shaving head frame, the exchangeable frame having a shaving foil mounted therein in arched form which is in cooperative relation with a reciprocating lower cutter assembly of suitable configuration which is urged against the foil by spring means, with corresponding holding and guiding means being provided on the exchangeable frame as well as on the shaving head frame to guide the exchangeable from in the shaving head frame in vertical direction.

Description

Die Erfindung betrifft einen Scherkopf für Trockenrasierapparate mit den im Oberbegriff des Hauptanspruchs angegebenen Merkmalen.The invention relates to a shaving head for dry shavers with the features specified in the preamble of the main claim.

Scherkopfkonstruktionen dieser Art, die zum Beispiel aus der DE-A-2843657 bekannt sind, haben den Vorteil, daß sie sich zur Reinigung und zum Ersatz von beschädigten oder abgenutzten Scherfolien leicht zerlegen und wieder zusammensetzen lassen, auch von Laien und ungeübten Benutzern, ohne daß die empfindliche Scherfolie der Gefahr der Beschädigung ausgesetzt ist. Die Herstellung des Wechselrahmens und der Halterung der Scherfolie daran kann in einem Spritzvorgang erfolgen, so daß sich zusätzliche Arbeitsgänge erübrigen.Shaving head constructions of this type, which are known, for example, from DE-A-2843657, have the advantage that they can be easily dismantled and reassembled for cleaning and replacing damaged or worn shaving foils, even by laymen and inexperienced users, without this the sensitive shaving foil is exposed to the risk of damage. The interchangeable frame and the mounting of the shaving foil thereon can be produced in one injection molding process, so that additional operations are unnecessary.

Um nun zu erreichen, daß die Scherfolie auch bei der Halterung in einem Wechselrahmen unter Rasierdruck zusammen mit dem Untermesser nachgeben kann, damit die Kontaktfläche mit ihm erhalten bleibt und die Scherfolie nicht durch Ausbeulen und Knicken beschädigt wird, hat man verschiedene Maßnahmen versucht, die aber insgesamt bisher nicht befriedigen konnten und daher, anders wie etwa bei der nachgiebigen Halterung der Scherfolie direkt im Scherkopfrahmen, nach der DE-A-1801545 keinen Zugang in die Serienfertigung fanden.In order to ensure that the shaving foil can give in together with the lower knife even when it is held in an interchangeable frame under shaving pressure, so that the contact surface is maintained and the shaving foil is not damaged by bulging and kinking, various measures have been attempted, but So far, they have not been able to satisfy overall and therefore, unlike, for example, the flexible holding of the shaving foil directly in the shaving head frame, no access to series production was found according to DE-A-1801545.

So erscheint die Anordnung von Biegefedern als integraler Bestandteil des Wechselrahmens zwar auf den ersten Blick als vorteilhaft, da auch hier kein zusätzlicher Arbeitsgang erforderlich ist, jedoch hat sich herausgestellt, daß diese Art der Federung wegen der notwendigen Materialdicke nur als relativ steif verwirklicht werden kann und die Dämpfung von Schwingungen, angeregt durch die Arbeitsbewegung des Untermessers, nicht ausreichend ist (DE-A-2843657). Der Wechselrahmen nach der letztgenannten Literaturstelle läßt sich überdies mit einfachen Mitteln nicht aus dem Scherkopfrahmen entnehmen.Thus, the arrangement of spiral springs as an integral part of the removable frame appears advantageous at first glance, since no additional work step is required here either, but it has been found that this type of suspension can only be realized as relatively stiff due to the necessary material thickness and the damping of vibrations, stimulated by the working movement of the lower knife, is not sufficient (DE-A-2843657). The change frame according to the latter literature reference can also not be removed from the shaving head frame with simple means.

Ausgehend von diesem Stand der Technik hat die Erfindung die Aufgabe, bei einem Scherkopf der eingangs genannten Art sicherzustellen, daß die Scherfolie der nachgebenden Bewegung des Untermessers unter Rasierdruck leicht zu folgen vermag, gegen Mitnahme durch die Arbeitsbewegung des Untermessers aber gefesselt bleibt, und daß die Scherfolie zusammen mit dem Wechselrahmen jederzeit leicht entnommen werden kann.Based on this prior art, the invention has the object to ensure with a shaving head of the type mentioned that the shaving foil can easily follow the yielding movement of the lower knife under shaving pressure, but remains tied against entrainment by the working movement of the lower knife, and that The shaving foil together with the removable frame can be easily removed at any time.

Diese Aufgabe wird durch die im Kennzeichen des Patentanspruches angegebenen Maßnahmen in überraschend einfacher Weise gelöst. Die erfindungsgemäße Halterung und Führung des Wechsel rahmens im Scherkopfrahmen läßt sich in verschiedener Weise verwirklichen. Die Anordnung und Ausbildung der Laschen erlaubt es, durch die Wahl der Materialdicke die Elastizität von den Rahmenlängsseiten zu den Laschen nach ihren getrennten Funktionen zu variieren und zwischen den Flächen der Laschen und den Seiten des Scherkopfrahmens eine gewünschte Reibung durch Wahl des Andruckes und des Reibungskoeffizienten einzustellen, wodurch Schwingungen gedämpft werden können. Weitere vorteilhafte und zweckmäßige spezielle Merkmale zur weiteren Ausbildung der Erfindung sind den Unteransprüchen 2 bis 6 zu entnehmen.This object is achieved in a surprisingly simple manner by the measures specified in the characterizing part of the patent claim. The inventive holder and leadership of the change frame in the shaving head frame can be realized in various ways. The arrangement and design of the tabs allows the elasticity to be varied from the longitudinal sides of the frame to the tabs according to their separate functions by the choice of the material thickness, and to set a desired friction between the surfaces of the tabs and the sides of the shaving head frame by selecting the pressure and the coefficient of friction , which can dampen vibrations. Further advantageous and expedient special features for further developing the invention can be found in subclaims 2 to 6.

In der Zeichnung sind Ausbildungsbeispiele der Erfindung dargestellt. Es zeigen:

Fig. 1
eine Darstellung des Scherkopfes, teils im Längsschnitt längs der Schnittlinie I-I in Fig. 2 ― linke Häfte ―, teils ausschnittweise ― rechte Hälfte ―,
Fig. 2
eine Ansicht des Scherkopfes längs der Schnittlinie II-II in Fig. 1 in zwei Bewegungszuständen des Wechselrahmens und Untermessers,
Fig. 3
eine Ansicht des Wechselrahmens längs der Schnittlinie II-II in Fig. 1,
Fig. 4
einen entsprechenden Schnitt durch einen Scherkopf mit doppelt gewölbt eingespannter Scherfolie und mit Varianten einiger Einzelheiten,
Fig. 5
eine ausschnittsweise Darstellung im Längsschnitt dazu und
Fig. 6
eine weitere ausschnittsweise Darstellung einer Einzelheit.

In the drawing, training examples of the invention are shown. Show it:
Fig. 1
a representation of the shaving head, partly in longitudinal section along the section line II in Fig. 2 - left half -, partly cut - right half -,
Fig. 2
2 shows a view of the shaving head along the section line II-II in FIG. 1 in two states of movement of the change frame and lower knife,
Fig. 3
2 shows a view of the change frame along the section line II-II in FIG. 1,
Fig. 4
a corresponding section through a shaving head with double-arched shaving foil and with variants of some details,
Fig. 5
a fragmentary representation in longitudinal section and
Fig. 6
another detail of a detail.

Der in Fig. 1 dargestellte Scherkopf für Trockenrasierapparate besteht im wesentlichen aus einem Scherkopfrahmen 1 üblicher Bauart, der auf dem Apparategehäuse 2 abnehmbar aufgesetzt ist. In den Scherkopfrahmen 1 ist ein umfanggeschlossener, kastenförmiger Wechselrahmen 3 einsetzbar, der aus einem begrenzt elastischem Material besteht, in dem eine Scherfolie 4 gewölbt eingespannt ist. Diese Scherfolie 4 wirkt mit einem entsprechend ihrer Wölbung geschliffenen Untermesser 5 zusammen, das durch eine Feder 6 in die Wölbung der Scherfolie 4 hineingedrückt und über einen Schwinghebel 7 von einem nicht dargestellten Motor in hin- und hergehende Bewegung versetzt wird.The shaving head for dry shavers shown in Fig. 1 consists essentially of a shaving head frame 1 of conventional design, which is detachably placed on the apparatus housing 2. In the shaving head frame 1, a circumferentially closed, box-shaped interchangeable frame 3 can be used, which consists of a limited elastic material in which a shaving foil 4 is arched. This shaving foil 4 interacts with a lower knife 5 ground according to its curvature, which is pressed into the curvature of the shaving foil 4 by a spring 6 and is set into a reciprocating movement by a motor (not shown) via a rocker arm 7.

Der in Fig. 3 in seinem entnommenen Zustand und ohne Scherfolie im Schnitt dargestellte Wechselrahmen 3 hat zwei Querseiten 8 und 9 und zwei Längsseiten 10 und 11, an deren Unterkanten Laschen 12 und 13 etwas nach innen versetzt angeformt sind. Diese Laschen sind elastisch und in der in Fig. 3 dargestellten Ruhelage mit geringem Winkel nach außen angestellt.The removable frame 3 shown in FIG. 3 in its removed state and without a shaving foil has two transverse sides 8 and 9 and two longitudinal sides 10 and 11, on the lower edges of which tabs 12 and 13 are formed somewhat offset inwards. These tabs are elastic and in the rest position shown in FIG. 3 are set at a small angle to the outside.

An den Laschen 12 und 13 sind der eine Teil der Halterungs- und Führungsmittel für den Wechselrahmen 3 im Scherkopfrahmen 1 in Form von Öffnungen 14 angebracht, in die als anderer Teil der Halterungs- und Führungsmittel hakenförmige Vorsprünge 15, die an den zugeordneten Innenflächen 16 des Scherkopfrahmens 1 vorgesehen sind, eingreifen. Die Passungen zwischen den Öffnungen und Vorsprüngen sind zum Teil als enge Gleitpassung gewählt, die nur eine Vertikalbewegung aber keine wesentliche Bewegung in Arbeitsrichtung des Untermessers zuläßt, während für die nachgebende Bewegung von Wechselrahmen un Scherfolie in bzw. entgegen der Pfeilrichtung A eine diesem Bewegungshub entsprechende Spielpassung vorgesehen ist, wie dies in Fig. 1 dargestellt ist.On the tabs 12 and 13, a part of the holder and guide means for the interchangeable frame 3 in the shaving head frame 1 is attached in the form of openings 14, into which, as another part of the holder and guide means, hook-shaped projections 15, which on the associated inner surfaces 16 of the Shaving head frame 1 are provided to intervene. The fits between the openings and projections are selected in part as a narrow sliding fit, which only allows vertical movement but no substantial movement in the working direction of the lower knife, while for the yielding movement of the removable frame and shaving foil in or against the arrow direction A, a clearance fit corresponding to this movement stroke is provided, as shown in Fig. 1.

Die Halterungs- und Führungsmittel können natürlich auch vertauscht vorgesehen sein, d.h. die Vorsprünge 15.1 befinden sich an den Laschen 12, 13 und die Öffnungen 14.1 an den Innenflächen 16 des Scherkopfrahmens 1. Die Höhe der Öffnungen 14 bzw. 14′ ist etwas größer als der mögliche Weg des Untermessers 5 unter Rasierdruck d.h. entgegen der Richtung des Pfeiles A und dem gewählten Verschiebeweg B zwischen dem Wechselrahmen 3 und dem Scherkopfrahmen 1, der nach unten durch Aufsetzen der Unterkante des Wechselrahmens auf der Oberkante des Scherkopfrahmens begrenzt ist. Über den Querseiten 8, 9 des Wechselrahmens 3 erheben sich Stirnwangen 17, 18, die an ihren, den Stirnwangen 19, 20 des Scherkopfrahmens 1 zugekehrten Außenflächen mit Gleitnoppen 21 versehen sind. Der Abstand der Stirnwangen 17, 18 des Wechelrahmens voneinander hat ein gewisses Übermaß gegenüber dem entsprechenden Abstand der Stirnwangen 19, 20 des Scherkopfrahmens 1, so daß die Stirnwangenpaare 17-19 und 18-20 über die Gleitnoppen 21 mit einer leichten Spannung aneinanderliegen.The mounting and guide means can of course also be interchanged, ie the projections 15.1 are on the tabs 12, 13 and the openings 14.1 on the inner surfaces 16 of the shaving head frame 1. The height of the openings 14 and 14 'is slightly larger than that possible way of the lower knife 5 under shaving pressure ie opposite to the direction of arrow A and the selected displacement path B between the changing frame 3 and the shaving head frame 1, which is limited at the bottom by placing the lower edge of the changing frame on the upper edge of the shaving head frame. Above the transverse sides 8, 9 of the interchangeable frame 3 rise end cheeks 17, 18 which are provided with sliding knobs 21 on their outer surfaces facing the end cheeks 19, 20 of the shaving head frame 1. The distance between the end cheeks 17, 18 of the interchangeable frame from each other has a certain excess compared to the corresponding distance between the end cheeks 19, 20 of the shaving head frame 1, so that the end cheek pairs 17-19 and 18-20 abut against one another with a slight tension via the sliding knobs 21.

An den Längsseiten 10 und 11 des Wechselrahmens ist schließlich die Scherfolie 4 befestigt, in diesem Falle in der Regel starr, etwa durch Verschweißen oder Umspritzen. Es ist aber durchaus möglich, die Scherfolie 4 auch in einer bekannten Weise zusätzlich elastisch nachgiebig zu haltern (z.B. gemäß DE-PS 1168796), wie in Fig. 4, rechte Seite, mit Ziffer 22 dargestellt ist. Bei Verwendung eines Wechselrahmens 3.1 mit doppelgewölbter Scherfolie 4.1, ist es von Vorteil, im Bereich der ― wie oben erwähnt ― aneinanderliegenden, aber hier breiteren Stirnwangen 23-24 eine zusätliche Vertikalführung vorzusehen, und zwar in Form eines an der Stirnwange 24 des Scherkopfrahmens 1.1 angebrachten Bolzens 25, der in eine Vertikalnut 26 an der Stirnwange 23 des Wechselrahmens 3.1 eingreift (Fig. 5). Auch hier kann die Anordnung der am Wechselrahmen und Scherkopfrahmen vorgesehenen Führungsmittel ― wie in Fig. 2 dargestellt ― getroffen sein.Finally, the shaving foil 4 is fastened to the long sides 10 and 11 of the interchangeable frame, in this case generally rigid, for example by welding or extrusion coating. However, it is entirely possible to additionally hold the shaving foil 4 in a known manner in an elastically flexible manner (e.g. according to DE-PS 1168796), as shown in FIG. 4, right-hand side, with number 22. When using an interchangeable frame 3.1 with a double-curved shaving foil 4.1, it is advantageous to provide an additional vertical guide in the area of the end cheeks 23-24, which are adjacent to one another but are wider here, as mentioned above, namely in the form of an attached to the end cheek 24 of the shaving head frame 1.1 Bolt 25 which engages in a vertical groove 26 on the front cheek 23 of the interchangeable frame 3.1 (Fig. 5). Here, too, the arrangement of the guide means provided on the interchangeable frame and shaving head frame can be made - as shown in FIG. 2.

Die Scherfolie 4.1 nach Fig. 4 und 5 ist im Tal zwischen den beiden Bögen durch eine Stange 27 oder dergleichen abgestützt, die ihrerseits an den beiden Stirnwangen 23 des Wechselrahmens 3.1 gehalten ist. Die sonstige Ausbildung der Halterungs- und Führungsmittel und der zugehörigen Teile beider Rahmen 1.1 und 3.1 entspricht der in Fig. 1 und 2 dargestellten Scherkopfanordnung mit einfach gewölbter Scherfolie.4 and 5 is supported in the valley between the two arches by a rod 27 or the like, which in turn is held on the two end cheeks 23 of the interchangeable frame 3.1. The other design of the holding and guiding means and the associated parts of both frames 1.1 and 3.1 corresponds to the shaving head arrangement shown in FIGS. 1 and 2 with a simply curved shaving foil.

Bei einer gewollt schwächeren Ausbildung der Feder 6 für die Untermesseranordnung 5 kann es von Vorteil sein, im Bewegungsbereich zwischen dem Wechselrahmen 3 und dem Scherkopfrahmen 1 weitere Federungsmittel, z.B. Blattfedern 28, vorzusehen, die direkt zwischen beiden Teilen wirken. Wie Fig. 6 zeigt, ist es in diesem Falle zweckmäßig, auf der Oberkante der Längswände 29 des Scherkopfrahmens 1.2 je eine Nut 30 anzubringen, in die die Blattfeder 28 eingelegt ist und sich gegen die Unterkante der zugeordneten Längswand 10 des Wechselrahmens 3 abstützt.With a deliberately weaker design of the spring 6 for the lower knife arrangement 5, it can be advantageous to provide additional spring means, for example leaf springs 28, in the range of motion between the interchangeable frame 3 and the shaving head frame 1, which act directly between the two parts. As shown in FIG. 6, in this case it is expedient to provide a groove 30 in each case on the upper edge of the longitudinal walls 29 of the shaving head frame 1.2, in which the leaf spring 28 is inserted and supported against the lower edge of the associated longitudinal wall 10 of the removable frame 3.

Zur Montage des Scherkopfes wird der Wechselrahmen 3 bzw. 3.1 durch Druck auf seine Längsseiten 10, 11 soweit nach innen verformt, daß er mit seinen Laschen 12, 13 von oben in den Scherkopfrahmen 1, 1.1, 1.2 eingeführt werden kann, bis die Halterungsmittel einrasten. Die Laschen 12, 13 hintergreifen dabei die zugeordneten Innenflächen 16 des Scherkopfrahmens und liegen dort mit leichter Spannung an.To assemble the shaving head, the interchangeable frame 3 or 3.1 is deformed inward by pressure on its long sides 10, 11 so that it can be inserted with its tabs 12, 13 into the shaving head frame 1, 1.1, 1.2 from above until the holding means snap into place . The tabs 12, 13 engage behind the associated inner surfaces 16 of the shaving head frame and rest there with slight tension.

Unter Rasierdruck vermag auf diese Weise der Wechselrahmen zusammen mit der eingespannten ein- oder mehrfach gewölbten Scherfolie und er mit dieser zusammenwirkenden Untermesseranordnung nach dem Gehäuseinneren nachzugeben, ohne daß sich die Scherfolie ausbeult und der Kontaktbereich zwischen beiden Scherteilen verringert wird. Die mit leichter Spannung an den Wandungen des Scherkopfrahmens anliegenden entsprechenden Flächen des Wechselrahmens gewährleisten dabei, daß die Verschiebebewegung unter einer gewissen Reibung erfolgt, mit der Flattern und Schwingungen des Wechselrahmens weitgehend ausgeschaltet werden. Der zusätzliche Bauaufwand ist gering, so daß auch eine wirtschaftliche Herstellung sichergestellt ist.Under shaving pressure, the interchangeable frame together with the clamped-in single or multiple-curved shaving foil and it with this cooperating bottom knife arrangement can yield to the inside of the housing without the shaving foil bulging out and the contact area between the two shear parts being reduced. The corresponding surfaces of the interchangeable frame which bear against the walls of the shaving head frame with slight tension ensure that the displacement movement takes place with a certain amount of friction, with which fluttering and vibrations of the interchangeable frame are largely eliminated. The additional construction effort is low, so that economical production is also ensured.

BezugszeichenReference numerals

1. 1.1, 1.21.1, 1.2
ScherkopfrahmenShaving head frame
22nd
ApparategehäuseApparatus housing
3, 3.13, 3.1
WechselrahmenRemovable frame
4, 4.14, 4.1
ScherfolieShaving foil
55
UntermesserLower knife
66
Feder für UntermesserLower knife spring
77
SchwinghebelRocker arm
88th
Querseiten des WechelrahmensTransverse sides of the removable frame
99
Querseiten des WechselrahmensTransverse sides of the removable frame
1010th
Längsseite des WechselrahmensLong side of the removable frame
1111
Längsseiten des WechselrahmensLong sides of the removable frame
1212
LaschenTabs
1313
LaschenTabs
14, 14.114, 14.1
Öffnungenopenings
15, 15.115, 15.1
VorsprüngeLedges
1616
Innenflächen des ScherkopfrahmensInner surfaces of the shaving head frame
1717th
Stirnwangen des WechselrahmensForehead cheeks of the removable frame
1818th
Stirnwangen des WechselrahmensForehead cheeks of the removable frame
1919th
Stirnwangen des ScherkopfrahmensForehead cheeks of the shaving head frame
2020th
Stirnwangen des ScherkopfrahmensForehead cheeks of the shaving head frame
2121
GleitnoppenSliding knobs
2222
Elastische ScherfolienaufhängungElastic shaving foil suspension
2323
Stirnwange des DoppelwechselrahmensFront cheek of the double change frame
2424th
Stirnwange des DoppelscherkopfrahmensForehead cheek of the double cutter head frame
2525th
Bolzenbolt
2626
VertikalnutVertical groove
2727th
Stangepole
2828
BlattfederLeaf spring
2929
Längswand des Scherkopfrahmens 1Longitudinal wall of the shaving head frame 1
3030th
NutGroove
AA
Pfeilarrow
BB
DoppelpfeilDouble arrow

Claims (6)

1. A shaving head for dry shaving apparatus, comprising a shaving head frame (1, 1.1, 1.2) arranged on the shaver housing (2) so as to be removable therefrom and a circumferentially closed, box-shaped exchangeable frame (3, 3.1) of a material of limited elasticity which is insertable into the shaving head frame, said exchangeable frame having a shaving foil (4, 4.1) mounted therein in arched form which is in cooperative relation with a reciprocating lower cutter (5) of suitable configuration which is urged against the foil by spring means (6), characterized in that elastic tongues (12 and 13) are arranged on the longitudinal sides (10 and 11) of the exchangeable frame (3, 3.1) for holding it movably within limits and for vertically guiding the exchangeable frame (3, 3.1) in the shaving head frame (1, 1.1, 1.2), said tongues extending at a slight outward angle in the withdrawn condition of the exchangeable frame (3, 3.1) and cooperating with corresponding holding and guiding means (15, 14.1) on the associated inner surfaces (16) of the shaving head frame (1, 1.1, 1.2).
2. The shaving head as claimed in claim 1, characterized in that the holding and guiding means are configured as openings (14, 14.1) and as suitably dimensioned projections (15, 15.1) engaging in said openings.
3. The shaving head as claimed in claim 1, characterized in that the shaving foil (4) is additionally held movably within limits in the exchangeable frame (3) in the direction of action (arrow A) of the spring means (6).
4. The shaving head as claimed in claim 1, characterized in that in the area of the shaving foil arch the exchangeable frame (3) is provided with end walls (17, 18) extending upwardly from its lateral sides (8, 9) and having sliding knobs (21) on their outer surfaces, with the dimension of the exchangeable frame (3) being selected such that its end walls (17, 18) rest against the end walls (19, 20) of the shaving head frame (1) at a slight tension.
5. The shaving head as claimed in claim 1, characterized in that in the area of motion between the exchangeable frame (3.1) and the shaving head frame (1) further spring means (leaf spring 28) are provided which act directly intermediate the two parts.
6. The shaving head as claimed in claim 1, with an exchangeable frame (3.1) having a double-arched shaving foil (4.1), characterized in that further guiding means (25, 26) for movably guiding within limits in vertical direction are provided between the end walls (23 and 24) of the exchangeable frame and the shaving head frame, respectively (3.1 and 1.1, respectively).
EP89116854A 1988-09-30 1989-09-12 Shaving head for dry shavers Expired - Lifetime EP0361200B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89116854T ATE71325T1 (en) 1988-09-30 1989-09-12 SHAVING HEAD FOR DRY SHAVERS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833179 1988-09-30
DE3833179A DE3833179A1 (en) 1988-09-30 1988-09-30 CUTTER HEAD FOR DRY SHAVERS

Publications (2)

Publication Number Publication Date
EP0361200A1 EP0361200A1 (en) 1990-04-04
EP0361200B1 true EP0361200B1 (en) 1992-01-08

Family

ID=6364038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89116854A Expired - Lifetime EP0361200B1 (en) 1988-09-30 1989-09-12 Shaving head for dry shavers

Country Status (6)

Country Link
US (1) US4991295A (en)
EP (1) EP0361200B1 (en)
JP (1) JP2649277B2 (en)
AT (1) ATE71325T1 (en)
DE (2) DE3833179A1 (en)
ES (1) ES2027814T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5611145A (en) * 1991-12-20 1997-03-18 Wetzel; Matthias Dry-shaving apparatus
DE4215398C1 (en) * 1992-05-11 1992-12-10 Braun Ag, 6000 Frankfurt, De
AT398719B (en) * 1992-07-24 1995-01-25 Philips Nv SHAVER WITH A SHEAR HEAD FRAME AND A FILM FRAME HOLDABLE TO THIS
JP2567081Y2 (en) * 1992-07-28 1998-03-30 松下電工株式会社 Reciprocating electric razor
DE4410543C1 (en) * 1994-03-26 1994-12-22 Braun Ag Dry shaver with top cutter frame locking
US6901664B2 (en) * 2002-07-18 2005-06-07 Wahl Clipper Corporation Hair clipper and seal
NZ526193A (en) * 2003-05-29 2005-10-28 Der Patents Ltd Razor
US20060143924A1 (en) * 2004-12-30 2006-07-06 Rovcal, Inc. Electric shaver
KR200396685Y1 (en) * 2005-06-21 2005-09-26 오태준 Razor with two hocking switch
WO2016001019A1 (en) * 2014-07-04 2016-01-07 Koninklijke Philips N.V. Blade set, hair cutting appliance, and related manufacturing method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE635381A (en) * 1962-07-24 1900-01-01
CH467136A (en) * 1967-10-19 1969-01-15 Apag App Bau Ag Dry shaver
JPS492702Y1 (en) * 1970-07-09 1974-01-23
JPS5325665Y2 (en) * 1972-03-27 1978-06-30
JPS49702A (en) * 1972-04-19 1974-01-07
ZA7440B (en) * 1973-02-05 1974-11-27 Schick Inc Power shaver with drop-in replaceable stationary cutter foil assembly
DE2843657A1 (en) * 1978-10-06 1980-04-10 Braun Ag DRY SHAVER WITH A SHEARING FRAME AND AN AUXILIARY FRAME TO BE INSERTED IN THIS
AT385448B (en) * 1985-05-02 1988-03-25 Philips Nv CUTTER HEAD FOR A DRY SHAVER

Also Published As

Publication number Publication date
DE3833179C2 (en) 1990-07-12
DE3833179A1 (en) 1990-04-05
ATE71325T1 (en) 1992-01-15
US4991295A (en) 1991-02-12
JP2649277B2 (en) 1997-09-03
JPH02109587A (en) 1990-04-23
EP0361200A1 (en) 1990-04-04
ES2027814T3 (en) 1992-06-16
DE58900699D1 (en) 1992-02-20

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