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EP2123410B1 - Razor blade unit with film hinge - Google Patents

Razor blade unit with film hinge Download PDF

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Publication number
EP2123410B1
EP2123410B1 EP08104078A EP08104078A EP2123410B1 EP 2123410 B1 EP2123410 B1 EP 2123410B1 EP 08104078 A EP08104078 A EP 08104078A EP 08104078 A EP08104078 A EP 08104078A EP 2123410 B1 EP2123410 B1 EP 2123410B1
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EP
European Patent Office
Prior art keywords
blade unit
razor blade
blade housing
handle
razor
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
EP08104078A
Other languages
German (de)
French (fr)
Other versions
EP2123410A1 (en
Inventor
Uwe Denkert
Kai-Uwe Rüde
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.)
Feintechnik GmbH Eisfeld
Original Assignee
Feintechnik GmbH Eisfeld
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Feintechnik GmbH Eisfeld filed Critical Feintechnik GmbH Eisfeld
Priority to AT08104078T priority Critical patent/ATE517722T1/en
Priority to ES08104078T priority patent/ES2370364T3/en
Priority to EP08104078A priority patent/EP2123410B1/en
Priority to US12/470,685 priority patent/US8096054B2/en
Publication of EP2123410A1 publication Critical patent/EP2123410A1/en
Application granted granted Critical
Publication of EP2123410B1 publication Critical patent/EP2123410B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • 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
    • B26B21/08—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 involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/22—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously
    • B26B21/222—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit
    • B26B21/225—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit the changeable unit being resiliently mounted on the handle

Definitions

  • the invention relates to a razor blade unit for a razor according to the preamble of claim 1.
  • High-quality conventional razor blade units are pivotally mounted relative to the handle about a rotational or pivotal axis perpendicular to the longitudinal axis.
  • the skin contact level of the razor blade unit can thereby be applied better to the skin to be shaved during shaving.
  • the DE 297 24 245 U1 refers inter alia to a razor blade unit in which the axis of rotation is disposed over the cutting edges of the blades and over the housing.
  • the describes DE 297 24 245 U1 an axis of rotation located at the cutting edge of the second blade.
  • the axis of rotation lies either on the side of the blade unit or on the side of the blade unit opposite the razor handle to the shaving surface, whereby the axis of rotation, when placed in operation, lies on or below the surface to be shaved.
  • the blade unit carrier is supported on a four-bar linkage lying in a plane parallel to the blade edges.
  • a razor with a coupling connecting the handle and the blade unit, wherein the blade unit is pivotable about a first axis relative to the coupling.
  • the coupling is pivotally mounted about a second axis relative to the handle which, like the first axis, is parallel to the cutting edges.
  • the coupling and the blade unit are biased in predetermined rest positions.
  • the DE 698 08 479 T2 includes a blade unit engagement structure that allows pivotal movement of the blade unit about a pivot axis disposed parallel to a longitudinal axis of the blade unit.
  • the handle is connected to the blade unit engagement structure via a pair of resiliently deformable arms. The arms permit downward displacement of the blade unit engagement structure towards the handle, wherein movement of the blade unit engagement structure in a direction perpendicular to the direction of downward displacement is restricted.
  • a razor is known, on whose handle a razor blade unit is mounted at the front end by means of a fork mount.
  • the blade unit can be pivoted starting from a spring-loaded zero position about an axis of rotation parallel to the cutting edges.
  • the axis of rotation defined by the fork mount extends below the cutting edge of the first blade.
  • a razor with a blade unit having two guide members, each having a surface to be pressed against the skin, one or more blades being mounted between these two guide members.
  • a handle portion is rotatably mounted about a pivot axis to this blade unit, wherein the pivot axis is positioned parallel to the cutting edges of the blades.
  • the position of the pivot axis should be chosen so that a stable position of the blade unit is ensured when it is pressed against the skin surface via the handle.
  • the pivot axis for the blade unit is defined by the ends of two arms which each engage with a pin in the blade unit.
  • the US 2005/0198830 A1 shows a razor blade unit for connection to a handle.
  • a connecting element is used which has two arms and defines a pivot axis between two pivot pins. The pivot axis lies in front of the razor blades.
  • a razor blade unit with a blade carrier known, which is detachably attachable to a handle via a connector part, wherein the connector part and the blade carrier are interconnected via a connecting part, which is in the form of a film hinge, and wherein the connector part and the blade carrier further via a resilient Plastic component are connected, which almost exclusively determines the spring characteristic of the connection between the connector part and blade carrier.
  • the object of the present invention is to provide an improved razor blade unit, in which a precise investment of the cutting edges of the blades is guaranteed on the skin to be shaved, largely independent of the contact pressure with which the user acts on the shaver.
  • a razor blade unit according to the appended claim 1 is used.
  • An essential aspect of the present invention is the position of the pivot axis passing through the film hinge. This is positioned with respect to the direction of the longitudinal axis of the handle in an area extending from the front in the direction of shaving edge of the foam edge to the foam edge of the nearest cutting edge. If the pivot axis is in this area, this has due to the construction of the film hinge the particular advantage that the introduction of a force component on the handle in the direction of the skin section to be shaved does not lead to an unwanted uprighting of the blade housing, whereby the secure contact of the cutting edges with the shaving surface is ensured in each case.
  • a particularly preferred embodiment of the razor blade unit is characterized in that the connecting portion is divided into two and at each of the transverse to the cutting edges extending sides of the blade housing is arranged.
  • Each of these two connecting portions has two hinge legs, which are each connected to each other via a film hinge and are preferably enclosed on all sides by an elastomeric damping component.
  • the two so-formed film hinges are designed so flexible that they could not guarantee the necessary for the shave power transmission from the handle to the blade housing alone.
  • the hinges rather serve the easily pivotable connection between the blade housing and coupling section.
  • the required spring characteristic permitting power transmission and causing the blade housing to return to a null position is provided by the elastomeric damping component.
  • the general operation of a film hinge using a damping component is known from the above patent DE 103 27 739 B4 known, so here is a detailed explanation is omitted.
  • the foam edge consists of the same elastomeric soft plastic as the damping component.
  • the hard components of the blade housing, the coupling portion and the connecting portion may also consist of a uniform hard plastic, which has a greater strength and substantially no elasticity with respect to the soft plastic of the damping component. All housing parts of the razor blade unit can be produced in this way by a two-component plastic injection molding process.
  • a preferred embodiment of the razor cartridge has a pivot limiting leg mounted on either the blade housing or the coupling portion and cooperating with an opposing stop.
  • the Swivel angle by which the blade housing can be pivoted relative to the coupling portion can be limited in this way. This increases the safety during shaving and avoids damage to the film hinge as a result of unintentional overstretching due to large forces.
  • the pivot angle is preferably limited to a range between 0 ° and 45 °, based on the position of the blade housing relative to the longitudinal axis of the handle.
  • the coupling portion comprises a sleeve which is detachably mounted on an adapter portion of the handle.
  • the handle is thus reusable and the coupling between the razor blade unit and handle can be performed quickly and without further aids. Further details on the construction of the adapter portion and the handle can be taken from the detailed description of the figures. Modified embodiments, which are used for example in disposable razors application, have a permanent connection between the coupling portion and handle.
  • a particularly preferred embodiment of the razor blade unit according to the invention comprises 5 blades, which are arranged in the blade housing and whose cutting edges lie substantially in the skin-contacting plane. To achieve particularly good shaving results, the individual cutting edges may protrude more or less beyond the skin contact plane or be set behind it.
  • FIGS. 1 and 2 show the basic structure of the razor blade unit according to the invention, wherein the razor blade unit in Fig. 1 in an assembled state from the front (upper view) and a rear view (lower view) is shown while Fig. 2 shows a slightly modified design of the razor blade unit in an exploded view.
  • a razor blade unit 01 comprises a blade housing 02 for receiving a plurality of blades 04.
  • the blade housing 01 is used in the embodiment shown here for receiving a total of five blades 04, which each have a cutting edge 05.
  • the blades 04 are designed as angular blades in the illustrated embodiment.
  • the area having the cutting edge 05 is preferably angled at an angle of about 50 ° to 70 ° during the blade manufacturing process.
  • the blade housing 02 leaves on its front surface a blade window 06 open, in which the cutting edges 05 of the blades are exposed to be brought into skin contact during shaving.
  • the position of the cutting edges 05 defines a skin contact plane, which may also be formed as a slightly curved surface with different blade projection.
  • the blade window 06 is bounded on the short sides by side walls 07 of the blade housing.
  • the blade housing is preferably made of a hard plastic.
  • a foam edge 09 and a sliding strip 10 are arranged on the blade housing 02.
  • the foam edge 09 serving for prestressing the skin to be shaved consists of an elastomeric plastic and is preferably injected by means of two-component injection molding together with the blade housing 02. It would also be conceivable, of course, to use a separate component for the foam edge 09.
  • the sliding strip 10 comes during shaving after the cutting edges 05 of the blades 04 in contact with the skin.
  • the skin nourishing substances are included.
  • the sliding strip 10 consists of a water-soluble and a water-insoluble component. By means of the water-soluble component washing out during the service life of the razor blade unit, a wear indicator can be realized which informs the user of the end of use.
  • the attachment of the sliding strip 10 on the blade housing is preferably carried out via an adhesive connection.
  • the blade housing 02 is closed at the rear with a cover 14, preferably via a latching connection.
  • the cover 14 is provided with recesses 17, which are located on the lateral edge regions or on a central web 18. Each of these depressions 17 is preferably V-shaped and serves in the finished assembled razor blade unit for supporting a respective blade rear side, which lies opposite the cutting edge 05 of the blade.
  • the razor blade unit 01 further has a coupling portion 20, which is preferably made of the same hard plastic as the blade housing 02.
  • the coupling portion 20 serves for the preferably detachable attachment of the razor blade unit to a handle, the details of which will be described below.
  • the connection between the coupling portion 20 and the blade housing 02 is realized via a connecting portion, which comprises in the example shown two film hinges 21, which attach to the two side walls 07 of the blade housing 02. How out Fig. 2 can be seen, go from the hinge 21, two hinge legs 22, which are attributed to the connecting portion, but preferably each integrally formed with the adjacent blade housing 02 and the coupling portion 20.
  • the film hinge 21 ensures the pivotability between the blade housing 02 and the coupling portion 20 and thus defines a pivot axis 19, which in the illustrated embodiment by the two lateral Film hinges 21 extends.
  • the pivot axis 19 lies in a region which extends from the front edge of the foam edge 09 in the direction of shaving to the cutting edge 05 closest to the foam edge 09.
  • the preferred range A of the pivot axis is in the lower illustration of Fig. 1 located.
  • the film hinge 21 is encapsulated by a damping component 23.
  • the damping component 23 fills the remaining between the hinge legs 22 cavity and surrounds the hinge legs 22 preferably from all sides.
  • the damping component 23 consists of an elastomeric plastic, which preferably coincides with the soft component of the foam edge 09 and can be produced simultaneously with this in the two-component injection molding process.
  • the spring characteristic which determines the restoring forces for the blade housing set.
  • the coupling portion 20 further comprises a support portion 24 and integrally formed thereon sleeve 25, which serves to couple the razor blade unit to the handle.
  • the sleeve 25 has a latching element 26 which cooperates with complementary locking means on the handle.
  • Fig. 3 the razor blade unit 01 is shown in a side sectional view.
  • the coupling portion 20 is placed with the sleeve 25 on an adapter portion 30 of a handle 31.
  • the locking element 26 is engaged in a recess in the adapter section 30.
  • a pivot limiting leg 27 can be seen, which is mounted on the blade housing 02 and its pivoting about the pivot axis 19 when reaching a maximum pivot angle on a stop 28 on the coupling portion 20 comes to rest, thereby preventing further pivoting of the blade housing.
  • Fig. 4 11 shows a side view of a complete razor including the razor blade unit 01 and the handle 31.
  • the handle 31 has a base body 32 made of a hard plastic, on the side surfaces gripping portions 33 are formed from a plastic soft component.
  • Fig. 5 shows a cross-sectional view of the handle 31, as seen along a section line VV, which in Fig. 4 is drawn.
  • the main body 32 has a substantially U-shaped cross section, in which a metal weight 34 is received.
  • the metal weight 34 preferably extends out of the front region of the main body 32 and forms there the adapter section 30 (FIG. Fig. 6 ).
  • Left and right of the metal weight 34 32 elongated grooves 35 are introduced in the base body, in which holding webs 36 of a handle cover 37 are pressed.
  • the handle cover 37 is also made of a hard plastic and covers the metal weight 34 over its entire surface. To stabilize the position of the metal weight 34 37 surveys can be attached to the underside of the handle cover be that engage in the metal weight 34.
  • the handle cover 37 is fitted in corresponding recesses of the base body 32, wherein preferably a Abdichtlamelle 38 is provided in the support area, which is deformed during pressing of the handle cover in the body and as a circumferential seal acts.
  • Fig. 6 shows the front portion of the handle 31 with the adapter portion 30.
  • a discharge sleeve 40 which can be moved by the user towards the razor blade unit to the connection between the sleeve 25 of the coupling portion 20 and the adapter portion 30th to solve.
  • the discharge sleeve 40 has a surface structuring 41 on its upper side.

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

Abstract

The razor blade unit (01) has a blade housing (02) and a coupling section (20) that is attached to a handle in detachable manner, where multiple blades (04) are provided in the blade housing. An integral hinge (21) is positioned between limitations of a foam edge (09), where the integral hinge runs in shaving direction.

Description

Die Erfindung betrifft eine Rasierklingeneinheit für einen Rasierapparat gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a razor blade unit for a razor according to the preamble of claim 1.

Hochwertige herkömmliche Rasierklingeneinheiten sind gegenüber dem Handgriff um eine zur Längsachse senkrecht verlaufende Dreh- oder Schwenkachse schwenkbar gelagert. Die Hautberührungsebene der Rasierklingeneinheit lässt sich dadurch während der Rasur besser an die zu rasierende Haut anlegen.High-quality conventional razor blade units are pivotally mounted relative to the handle about a rotational or pivotal axis perpendicular to the longitudinal axis. The skin contact level of the razor blade unit can thereby be applied better to the skin to be shaved during shaving.

Die DE 297 24 245 U1 verweist u.a. auf eine Rasierklingeneinheit, bei der die Drehachse über den Schneidkanten der Klingen und über dem Gehäuse angeordnet ist. Außerdem beschreibt die DE 297 24 245 U1 eine Drehachse, die an der Schneidkante der zweiten Klinge gelegen ist.The DE 297 24 245 U1 refers inter alia to a razor blade unit in which the axis of rotation is disposed over the cutting edges of the blades and over the housing. In addition, the describes DE 297 24 245 U1 an axis of rotation located at the cutting edge of the second blade.

In der EP 0 638 015 B1 ist ein Rasierer beschrieben bei dem die Drehachse entweder auf der Seite der Klingeneinheit oder auf der vom Rasierergriff zur Rasierfläche entgegengesetzten Seite der Klingeneinheit liegt, wodurch die Drehachse bei ihrer Anordnung im Betrieb entsprechend auf oder unterhalb der zu rasierenden Oberfläche liegt. Der Klingeneinheit-Träger ist an einem Viergliedgestänge getragen, dass in einer Ebene parallel zu den Klingenkanten liegt.In the EP 0 638 015 B1 there is described a razor in which the axis of rotation lies either on the side of the blade unit or on the side of the blade unit opposite the razor handle to the shaving surface, whereby the axis of rotation, when placed in operation, lies on or below the surface to be shaved. The blade unit carrier is supported on a four-bar linkage lying in a plane parallel to the blade edges.

Aus der WO 2003 097 310 ist ein Rasierer mit einer den Handgriff und die Klingeneinheit verbindenden Kupplung bekannt, bei der die Klingeneinheit um eine erste Achse relativ zur Kupplung schwenkbar ist. Die Kupplung ist um eine zweite Achse relativ zum Handgriff schwenkbar gelagert, welche so wie die erste Achse parallel zu den Schneidkanten verläuft. Die Kupplung und die Klingeneinheit sind in vorbestimmten Ruhepositionen vorgespannt.From the WO 2003 097 310 there is known a razor with a coupling connecting the handle and the blade unit, wherein the blade unit is pivotable about a first axis relative to the coupling. The coupling is pivotally mounted about a second axis relative to the handle which, like the first axis, is parallel to the cutting edges. The coupling and the blade unit are biased in predetermined rest positions.

Die DE 698 08 479 T2 beinhaltet eine Klingeneinheit-Eingriffs-Struktur, die eine Schwenkbewegung der Klingeneinheit um eine parallel zu einer Längsachse der Klingeneinheit angeordnete Schwenkachse ermöglicht. Der Handgriff ist über ein Paar federnd verformbare Arme mit der Klingeneinheit-Eingriffs-Struktur verbunden. Die Arme ermöglichen ein Verschieben der Klingeneinheit-Eingriffs-Struktur nach unten in Richtung Griff, wobei die Bewegung der Klingeneinheit-Eingriffs-Struktur in einer Richtung senkrecht zur Richtung der Verschiebung nach unten eingeschränkt ist.The DE 698 08 479 T2 includes a blade unit engagement structure that allows pivotal movement of the blade unit about a pivot axis disposed parallel to a longitudinal axis of the blade unit. The handle is connected to the blade unit engagement structure via a pair of resiliently deformable arms. The arms permit downward displacement of the blade unit engagement structure towards the handle, wherein movement of the blade unit engagement structure in a direction perpendicular to the direction of downward displacement is restricted.

Aus der US 4,514,904 ist ein Rasierer bekannt, an dessen Handgriff am vorderen Ende eine Rasierklingeneinheit mittels einer Gabelhalterung gelagert ist. Die Klingeneinheit kann ausgehend von einer federbelasteten Nulllage um eine zu den Schneidkanten parallele Drehachse verschwenkt werden. Die durch die Gabelhalterung definierte Drehachse verläuft dabei unterhalb der Schneidkante der ersten Klinge.From the US 4,514,904 a razor is known, on whose handle a razor blade unit is mounted at the front end by means of a fork mount. The blade unit can be pivoted starting from a spring-loaded zero position about an axis of rotation parallel to the cutting edges. The axis of rotation defined by the fork mount extends below the cutting edge of the first blade.

In der WO 2005/072918 A1 ist ein Rasierapparat mit einer Klingeneinheit beschrieben, die zwei Führungselemente aufweist, welche jeweils eine gegen die Haut zu pressende Oberfläche besitzen, wobei eine oder mehrere Klingen zwischen diesen beiden Führungselementen angebracht sind. Ein Griffabschnitt ist über eine Schwenkachse drehbar zu dieser Klingeneinheit angebracht, wobei die Schwenkachse parallel zu den Schneidkanten der Klingen positioniert ist. Die Position der Schwenkachse soll so gewählt werden, dass eine stabile Lage der Klingeneinheit gewährleistet ist, wenn diese über den Griff an die Hautoberfläche angedrückt wird. Die Schwenkachse für die Klingeneinheit wird durch die Enden von zwei Armen definiert, die jeweils mit einem Stift in die Klingeneinheit eingreifen.In the WO 2005/072918 A1 there is described a razor with a blade unit having two guide members, each having a surface to be pressed against the skin, one or more blades being mounted between these two guide members. A handle portion is rotatably mounted about a pivot axis to this blade unit, wherein the pivot axis is positioned parallel to the cutting edges of the blades. The position of the pivot axis should be chosen so that a stable position of the blade unit is ensured when it is pressed against the skin surface via the handle. The pivot axis for the blade unit is defined by the ends of two arms which each engage with a pin in the blade unit.

Die US 2005/0198830 A1 zeigt eine Rasierklingeneinheit zum Anschluss an einen Handgriff. Für die Verbindung zwischen der Klingeneinheit und dem Handgriff wird ein Verbindungselement verwendet, welches zwei Arme aufweist und zwischen zwei Drehstiften eine Schwenkachse definiert. Die Schwenkachse liegt dabei vor den Rasierklingen.The US 2005/0198830 A1 shows a razor blade unit for connection to a handle. For the connection between the blade unit and the handle, a connecting element is used which has two arms and defines a pivot axis between two pivot pins. The pivot axis lies in front of the razor blades.

Schließlich ist aus der DE 103 27 739 B4 eine Rasierklingeneinheit mit einem Klingenträger bekannt, welche über ein Steckverbindungsteil lösbar an einem Handgriff anbringbar ist, wobei das Steckverbindungsteil und der Klingenträger über ein Verbindungsteil miteinander verbunden sind, welches in Form eines Filmscharniers ausgebildet ist, und wobei das Steckverbindungsteil und der Klingenträger weiterhin über eine federnde Kunststoffkomponente verbunden sind, welche die Federcharakteristik der Verbindung zwischen Steckverbindungsteil und Klingenträger nahezu ausschließlich bestimmt. Obwohl die Verwendung des Filmscharniers und der federnden Kunststoffkomponente bereits eine gute Feder- und Dämpfungscharakteristik ermöglichen, besteht während der Rasur das Problem, dass sich der Klingenträger bei zu großem über den Handgriff aufgebrachten Druck ungewollt aufrichtet und von der Haut abhebt.Finally, out of the DE 103 27 739 B4 a razor blade unit with a blade carrier known, which is detachably attachable to a handle via a connector part, wherein the connector part and the blade carrier are interconnected via a connecting part, which is in the form of a film hinge, and wherein the connector part and the blade carrier further via a resilient Plastic component are connected, which almost exclusively determines the spring characteristic of the connection between the connector part and blade carrier. Although the use of the film hinge and the resilient plastic component Already allow a good spring and damping characteristics, there is the problem during shaving that the blade carrier unintentionally straightens and lifts off the skin with too much over the handle applied pressure.

Ausgehend von der DE 103 27 739 B4 besteht die Aufgabe der vorliegenden Erfindung darin, eine verbesserte Rasierklingeneinheit zur Verfügung zu stellen, bei der eine präzise Anlage der Schneidkanten der Klingen auf der zu rasierenden Haut gewährleistet ist, weitgehend unabhängig von der Anpresskraft, mit welcher der Benutzer den Rasierapparat beaufschlagt.Starting from the DE 103 27 739 B4 The object of the present invention is to provide an improved razor blade unit, in which a precise investment of the cutting edges of the blades is guaranteed on the skin to be shaved, largely independent of the contact pressure with which the user acts on the shaver.

Zur Lösung der erfindungsgemäßen Aufgabe dient eine Rasierklingeneinheit gemäß dem beigefügten Anspruch 1.To achieve the object according to the invention, a razor blade unit according to the appended claim 1 is used.

Ein wesentlicher Aspekt der vorliegenden Erfindung ist die Position der durch das Filmscharnier verlaufenden Schwenkachse. Diese ist bezogen auf die Richtung der Längsachse des Handgriffs in einem Bereich positioniert, der sich von der in Rasurrichtung vorderen Begrenzung der Schaumkante bis zu der der Schaumkante am nächsten liegenden Schneidkante erstreckt. Wenn sich die Schwenkachse in diesem Bereich befindet, hat dies aufgrund der Konstruktion des Filmscharniers den besonderen Vorteil, dass die Einleitung einer Kraftkomponente über den Handgriff in Richtung des zu rasierenden Hautabschnitts nicht zu einem ungewollten Aufrichten des Klingengehäuses führt, wodurch der sichere Kontakt der Schneidkanten mit der Rasurfläche in jedem Fall sichergestellt ist.An essential aspect of the present invention is the position of the pivot axis passing through the film hinge. This is positioned with respect to the direction of the longitudinal axis of the handle in an area extending from the front in the direction of shaving edge of the foam edge to the foam edge of the nearest cutting edge. If the pivot axis is in this area, this has due to the construction of the film hinge the particular advantage that the introduction of a force component on the handle in the direction of the skin section to be shaved does not lead to an unwanted uprighting of the blade housing, whereby the secure contact of the cutting edges with the shaving surface is ensured in each case.

Eine besonders zu bevorzugende Ausführungsform der Rasierklingeneinheit zeichnet sich dadurch aus, dass der Verbindungsabschnitt zweigeteilt ist und an jeder der quer zu den Schneidkanten verlaufenden Seiten des Klingengehäuses angeordnet ist. Jeder dieser beiden Verbindungsabschnitte besitzt zwei Scharnierschenkel, die jeweils über ein Filmscharnier miteinander verbunden sind und vorzugsweise allseitig von einer elastomeren Dämpfungskomponente eingeschlossen sind. Die beiden derart ausgebildeten Filmscharniere sind so flexibel gestaltet, dass sie die für die Rasur notwenige Kraftübertragung vom Handgriff auf das Klingengehäuse allein nicht gewährleisten könnten. Die Filmscharniere dienen vielmehr der leicht schwenkbaren Verbindung zwischen Klingengehäuse und Kupplungsabschnitt. Die benötigte Federcharakteristik, welche die Kraftübertragung gestattet und eine Rückstellung des Klingengehäuses in eine Nulllage bewirkt, wird durch die elastomere Dämpfungskomponente bereitgestellt. Die generelle Funktionsweise eines Filmscharniers unter Verwendung einer Dämpfungskomponente ist aus der o.g. Patentschrift DE 103 27 739 B4 bekannt, sodass hier auf eine detaillierte Erläuterung verzichtet wird.A particularly preferred embodiment of the razor blade unit is characterized in that the connecting portion is divided into two and at each of the transverse to the cutting edges extending sides of the blade housing is arranged. Each of these two connecting portions has two hinge legs, which are each connected to each other via a film hinge and are preferably enclosed on all sides by an elastomeric damping component. The two so-formed film hinges are designed so flexible that they could not guarantee the necessary for the shave power transmission from the handle to the blade housing alone. The hinges rather serve the easily pivotable connection between the blade housing and coupling section. The required spring characteristic permitting power transmission and causing the blade housing to return to a null position is provided by the elastomeric damping component. The general operation of a film hinge using a damping component is known from the above patent DE 103 27 739 B4 known, so here is a detailed explanation is omitted.

Es ist vorteilhaft, wenn die Schaumkante aus demselben elastomeren Weichkunststoff wie die Dämpfungskomponente besteht. Die Hartkomponenten des Klingengehäuses, des Kupplungsabschnitts und des Verbindungsabschnitts können ebenfalls aus einem einheitlichen harten Kunststoff bestehen, der gegenüber dem Weichkunststoff der Dämpfungskomponente eine größere Festigkeit und im Wesentlichen keine Elastizität aufweist. Sämtliche Gehäuseteile der Rasierklingeneinheit lassen sich auf diese Weise durch ein Zweikomponenten-Kunststoffspritzverfahren herstellen.It is advantageous if the foam edge consists of the same elastomeric soft plastic as the damping component. The hard components of the blade housing, the coupling portion and the connecting portion may also consist of a uniform hard plastic, which has a greater strength and substantially no elasticity with respect to the soft plastic of the damping component. All housing parts of the razor blade unit can be produced in this way by a two-component plastic injection molding process.

Eine bevorzugte Ausführungsform der Rasierklingeneinheit besitzt einen Schwenkbegrenzungsschenkel, der entweder am Klingengehäuse oder am Kupplungsabschnitt angebracht ist und mit einem gegenüberliegenden Anschlag zusammenwirkt. Der Schwenkwinkel, um welchen das Klingengehäuse gegenüber dem Kupplungsabschnitt verschwenkt werden kann, lässt sich auf diese Weise begrenzen. Dies erhöht die Sicherheit bei der Rasur und vermeidet Beschädigungen des Filmscharniers durch ungewolltes Überdehnen bei großen Krafteinwirkungen. Der Schwenkwinkel ist vorzugsweise auf einem Bereich zwischen 0° und 45° beschränkt, bezogen auf die Lage des Klingengehäuses gegenüber der Längsachse des Handgriffs.A preferred embodiment of the razor cartridge has a pivot limiting leg mounted on either the blade housing or the coupling portion and cooperating with an opposing stop. Of the Swivel angle by which the blade housing can be pivoted relative to the coupling portion, can be limited in this way. This increases the safety during shaving and avoids damage to the film hinge as a result of unintentional overstretching due to large forces. The pivot angle is preferably limited to a range between 0 ° and 45 °, based on the position of the blade housing relative to the longitudinal axis of the handle.

Es ist zweckmäßig, wenn der Kupplungsabschnitt eine Hülse umfasst, die lösbar auf einen Adapterabschnitt des Handgriffs aufsetzbar ist. Der Handgriff ist damit wieder verwendbar und die Kopplung zwischen Rasierklingeneinheit und Handgriff kann schnell und ohne weitere Hilfsmittel ausgeführt werden. Weitere Einzelheiten zur Konstruktion des Adapterabschnitts und des Handgriffs lassen sich aus der detaillierten Figurenbeschreibung entnehmen. Abgewandelte Ausführungsformen, die beispielsweise bei Einmal-Rasierern Anwendung finden, besitzen eine unlösbare Verbindung zwischen Kupplungsabschnitt und Handgriff.It is expedient if the coupling portion comprises a sleeve which is detachably mounted on an adapter portion of the handle. The handle is thus reusable and the coupling between the razor blade unit and handle can be performed quickly and without further aids. Further details on the construction of the adapter portion and the handle can be taken from the detailed description of the figures. Modified embodiments, which are used for example in disposable razors application, have a permanent connection between the coupling portion and handle.

Eine besonders bevorzugte Ausführungsform der erfindungsgemäßen Rasierklingeneinheit umfasst 5 Klingen, die im Klingengehäuse angeordnet sind und deren Schneidkanten im Wesentlichen in der Hautberührungsebene liegen. Für die Erzielung besonders guter Rasurergebnisse können die einzelnen Schneidkanten mehr oder weniger über die Hautberührungsebene hinausragen oder hinter diese zurückgesetzt sein.A particularly preferred embodiment of the razor blade unit according to the invention comprises 5 blades, which are arranged in the blade housing and whose cutting edges lie substantially in the skin-contacting plane. To achieve particularly good shaving results, the individual cutting edges may protrude more or less beyond the skin contact plane or be set behind it.

Weitere Vorteile, Einzelheiten und Weiterbildungen der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsformen der Rasierklingeneinheit und eines vorzugsweise zu verwendenden Handgriffs, unter Bezugnahme auf die Zeichnung. Es zeigen:

Fig. 1
eine erfindungsgemäße Rasierklingeneinheit in einer perspektivische Ansicht von vorn sowie in einer Ansicht von hinten;
Fig. 2
eine abgewandelte Ausführungsform der Rasierklingen- einheit in einer Explosionsdarstellung;
Fig. 3
eine geschnittene Seitenansicht der an einem Handgriff befestigten Rasierklingeneinheit;
Fig. 4
eine Seitenansicht eines vollständigen Rasierapparats mit Handgriff und Rasierklingeneinheit;
Fig. 5
eine Querschnittsansicht des Handgriffs;
Fig. 6
eine perspektivische Detaildarstellung des Handgriffs mit Adapterabschnitt.
Further advantages, details and developments of the present invention will become apparent from the following description of preferred embodiments of the razor blade unit and a preferably to be used handle, with reference to the drawing. Show it:
Fig. 1
a razor blade unit according to the invention in a perspective view from the front and in a view from behind;
Fig. 2
a modified embodiment of the razor blade unit in an exploded view;
Fig. 3
a sectional side view of the attached to a handle razor blade unit;
Fig. 4
a side view of a complete razor with handle and razor blade unit;
Fig. 5
a cross-sectional view of the handle;
Fig. 6
a detailed perspective view of the handle with adapter section.

Der Grundaufbau der erfindungsgemäßen Rasierklingeneinheit wird nachfolgend anhand der Figuren 1 und 2 erläutert, wobei die Rasierklingeneinheit in Fig. 1 in einem zusammengebauten Zustand von vorn (obere Darstellung) und einer rückwärtigen Ansicht (untere Darstellung) dargestellt ist, während Fig. 2 eine geringfügig abgewandelte Bauform der Rasierklingeneinheit in einer Explosionsdarstellung zeigt.The basic structure of the razor blade unit according to the invention will be described below with reference to FIGS FIGS. 1 and 2 explained, wherein the razor blade unit in Fig. 1 in an assembled state from the front (upper view) and a rear view (lower view) is shown while Fig. 2 shows a slightly modified design of the razor blade unit in an exploded view.

Eine erfindungsgemäße Rasierklingeneinheit 01 umfasst ein Klingengehäuse 02 zur Aufnahme von mehreren Klingen 04. Das Klingengehäuse 01 dient bei der hier gezeigten Ausführungsform zur Aufnahme von insgesamt fünf Klingen 04, welche jeweils eine Schneidkante 05 aufweisen. Selbstverständlich können in der Rasierklingeneinheit auch mehr oder weniger Klingen verwendet werden. Die Klingen 04 sind bei der dargestellten Ausführungsform als Winkelklingen ausgeführt. Der die Schneidkante 05 aufweisende Bereich wird während des Klingenherstellungsprozess vorzugsweise mit einem Winkel von etwa 50° bis 70° abgewinkelt.A razor blade unit 01 according to the invention comprises a blade housing 02 for receiving a plurality of blades 04. The blade housing 01 is used in the embodiment shown here for receiving a total of five blades 04, which each have a cutting edge 05. Of course, more or fewer blades can be used in the razor blade unit. The blades 04 are designed as angular blades in the illustrated embodiment. The area having the cutting edge 05 is preferably angled at an angle of about 50 ° to 70 ° during the blade manufacturing process.

Das Klingengehäuse 02 lässt an seiner Vorderfläche ein Klingenfenster 06 offen, in welchem die Schneidkanten 05 der Klingen freiliegen, um während der Rasur in Hautkontakt gebracht zu werden. Die Lage der Schneidkanten 05 definiert eine Hautberührungsebene, welche bei unterschiedlichem Klingenüberstand auch als leicht gekrümmte Fläche geformt sein kann. Das Klingenfenster 06 wird an den kurzen Seiten durch Seitenwände 07 des Klingengehäuses begrenzt. Das Klingengehäuse ist vorzugsweise aus einem Hartkunststoff gefertigt.The blade housing 02 leaves on its front surface a blade window 06 open, in which the cutting edges 05 of the blades are exposed to be brought into skin contact during shaving. The position of the cutting edges 05 defines a skin contact plane, which may also be formed as a slightly curved surface with different blade projection. The blade window 06 is bounded on the short sides by side walls 07 of the blade housing. The blade housing is preferably made of a hard plastic.

Neben den Klingen 04 sind am Klingengehäuse 02 auch eine Schaumkante 09 sowie ein Gleitstreifen 10 angeordnet. Die zum Vorspannen der zu rasierenden Haut dienende Schaumkante 09 besteht aus einem elastomeren Kunststoff und wird vorzugsweise mittels Zweikomponenten-Spritzgießverfahren gemeinsam mit dem Klingengehäuse 02 gespritzt. Denkbar wäre natürlich auch, ein separates Bauteil für die Schaumkante 09 zu verwenden. Der Gleitstreifen 10 kommt während der Rasur nach den Schneidkanten 05 der Klingen 04 mit der Haut in Kontakt. Im Gleitstreifen 10 sind die Haut pflegende Substanzen enthalten. Üblicherweise besteht der Gleitstreifen 10 aus einer wasserlöslichen und einer wasserunlöslichen Komponente. Mittels der sich während der Nutzungsdauer der Rasierklingeneinheit auswaschenden wasserlöslichen Komponente kann eine Abnutzungsanzeige realisiert werden, die den Nutzer über das Erreichen des Nutzungsendes informiert. Die Befestigung des Gleitstreifens 10 am Klingengehäuse erfolgt vorzugsweise über eine Klebeverbindung.In addition to the blades 04, a foam edge 09 and a sliding strip 10 are arranged on the blade housing 02. The foam edge 09 serving for prestressing the skin to be shaved consists of an elastomeric plastic and is preferably injected by means of two-component injection molding together with the blade housing 02. It would also be conceivable, of course, to use a separate component for the foam edge 09. The sliding strip 10 comes during shaving after the cutting edges 05 of the blades 04 in contact with the skin. In the sliding strip 10, the skin nourishing substances are included. Usually, the sliding strip 10 consists of a water-soluble and a water-insoluble component. By means of the water-soluble component washing out during the service life of the razor blade unit, a wear indicator can be realized which informs the user of the end of use. The attachment of the sliding strip 10 on the blade housing is preferably carried out via an adhesive connection.

Das Klingengehäuse 02 ist rückwärtig mit einem Deckel 14 vorzugsweise über eine Rastverbindung verschlossen. Der Deckel 14 ist mit Vertiefungen 17 versehen, die sich an den seitlichen Randbereichen bzw. an einem mittleren Steg 18 befinden. Jede dieser Vertiefungen 17 ist vorzugsweise V-förmig und dient bei der fertig montierten Rasierklingeneinheit zur Lagerung jeweils einer Klingenrückseite, die der Schneidkante 05 der Klinge gegenüberliegt.The blade housing 02 is closed at the rear with a cover 14, preferably via a latching connection. The cover 14 is provided with recesses 17, which are located on the lateral edge regions or on a central web 18. Each of these depressions 17 is preferably V-shaped and serves in the finished assembled razor blade unit for supporting a respective blade rear side, which lies opposite the cutting edge 05 of the blade.

Die Rasierklingeneinheit 01 besitzt weiterhin eine Kupplungsabschnitt 20, welcher vorzugsweise aus demselben Hartkunststoff wie das Klingengehäuse 02 hergestellt ist. Der Kupplungsabschnitt 20 dient der vorzugsweise lösbaren Befestigung der Rasierklingeneinheit an einem Handgriff, dessen Einzelheiten weiter unten beschrieben werden. Die Verbindung zwischen dem Kupplungsabschnitt 20 und dem Klingengehäuse 02 ist über einen Verbindungsabschnitt realisiert, der im dargestellten Bespiel zwei Filmscharniere 21 umfasst, welche an den beiden Seitenwänden 07 des Klingengehäuses 02 ansetzen. Wie aus Fig. 2 ersichtlich ist, gehen vom Filmscharnier 21 zwei Scharnierschenkel 22 aus, die dem Verbindungsabschnitt zugerechnet werden, jedoch vorzugsweise jeweils einstückig mit dem angrenzenden Klingengehäuse 02 bzw. dem Kupplungsabschnitt 20 geformt sind.The razor blade unit 01 further has a coupling portion 20, which is preferably made of the same hard plastic as the blade housing 02. The coupling portion 20 serves for the preferably detachable attachment of the razor blade unit to a handle, the details of which will be described below. The connection between the coupling portion 20 and the blade housing 02 is realized via a connecting portion, which comprises in the example shown two film hinges 21, which attach to the two side walls 07 of the blade housing 02. How out Fig. 2 can be seen, go from the hinge 21, two hinge legs 22, which are attributed to the connecting portion, but preferably each integrally formed with the adjacent blade housing 02 and the coupling portion 20.

Das Filmscharnier 21 gewährleistet die Verschwenkbarkeit zwischen dem Klingengehäuse 02 und dem Kupplungsabschnitt 20 und definiert damit eine Schwenkachse 19, die sich bei der dargestellten Ausführungsform durch die beiden seitlichen Filmscharniere 21 erstreckt. Die Schwenkachse 19 liegt in einem Bereich, der sich von der in Rasurrichtung vorderen Begrenzung der Schaumkante 09 bis zu der der Schaumkante 09 am nächsten liegenden Schneidkante 05 erstreckt. Der bevorzugte Bereich A der Schwenkachse ist in der unteren Darstellung der Fig. 1 eingezeichnet. Wenn sich die Schwenkachse in diesem Bereich A befindet, hat dies aufgrund der Konstruktion des Filmscharniers den besonderen Vorteil, dass die Einleitung einer Druckkraft über den Handgriff in Richtung des zu rasierenden Hautabschnitts nicht zu einem ungewollten Aufrichten des Klingengehäuses 02 führt, wodurch der sichere Kontakt der Schneidkanten 05 mit der Rasurfläche in jedem Fall sichergestellt ist.The film hinge 21 ensures the pivotability between the blade housing 02 and the coupling portion 20 and thus defines a pivot axis 19, which in the illustrated embodiment by the two lateral Film hinges 21 extends. The pivot axis 19 lies in a region which extends from the front edge of the foam edge 09 in the direction of shaving to the cutting edge 05 closest to the foam edge 09. The preferred range A of the pivot axis is in the lower illustration of Fig. 1 located. If the pivot axis is in this area A, this has due to the construction of the film hinge the particular advantage that the introduction of a compressive force on the handle in the direction of the skin section to be shaved does not lead to an unwanted erection of the blade housing 02, whereby the secure contact of the Cutting edge 05 is ensured with the shaving surface in each case.

Um eine Kraftübertragung vom Kupplungsabschnitt 20 zum Klingengehäuse 02 zu ermöglichen und die Verschwenkbarkeit zu dämpfen, ist das Filmscharnier 21 von einer Dämpfungskomponente 23 umspritzt. Die Dämpfungskomponente 23 füllt den zwischen den Scharnierschenkeln 22 verbleibenden Hohlraum aus und umgreift die Scharnierschenkel 22 vorzugsweise von allen Seiten. Die Dämpfungskomponente 23 besteht aus einem elastomeren Kunststoff, welcher vorzugsweise mit der Weichkomponente der Schaumkante 09 übereinstimmt und gleichzeitig mit dieser im Zweikomponenten-Spritzgießverfahren hergestellt werden kann. Über die Elastizität und die Materialstärke der Dämpfungskomponente 23 lässt sich die Federcharakteristik, welche die Rückstellkräfte für das Klingengehäuse bestimmt, einstellen.In order to enable a power transmission from the coupling portion 20 to the blade housing 02 and to dampen the pivotability, the film hinge 21 is encapsulated by a damping component 23. The damping component 23 fills the remaining between the hinge legs 22 cavity and surrounds the hinge legs 22 preferably from all sides. The damping component 23 consists of an elastomeric plastic, which preferably coincides with the soft component of the foam edge 09 and can be produced simultaneously with this in the two-component injection molding process. About the elasticity and the material thickness of the damping component 23, the spring characteristic, which determines the restoring forces for the blade housing set.

Der Kupplungsabschnitt 20 umfasst weiterhin einen Tragabschnitt 24 und eine daran einstückig angeformte Hülse 25, welche der Kopplung der Rasierklingeneinheit an den Handgriff dient. Die Hülse 25 besitzt ein Rastelement 26, das mit komplementären Rastmitteln am Handgriff zusammenwirkt.The coupling portion 20 further comprises a support portion 24 and integrally formed thereon sleeve 25, which serves to couple the razor blade unit to the handle. The sleeve 25 has a latching element 26 which cooperates with complementary locking means on the handle.

In Fig. 3 ist die Rasierklingeneinheit 01 in einer seitlichen Schnittansicht gezeigt. Der Kupplungsabschnitt 20 ist mit der Hülse 25 auf einen Adapterabschnitt 30 eines Handgriffs 31 aufgesetzt. Das Rastelement 26 ist in einer Vertiefung im Adapterabschnitt 30 eingerastet. In dieser Darstellung ist außerdem ein Schwenkbegrenzungsschenkel 27 erkennbar, der am Klingengehäuse 02 angebracht ist und bei dessen Verschwenken um die Schwenkachse 19 beim Erreichen eines maximalen Schwenkwinkels an einem Anschlag 28 am Kupplungsabschnitt 20 zur Anlage kommt, um dadurch ein Weiterschwenken des Klingengehäuses zu unterbinden.In Fig. 3 the razor blade unit 01 is shown in a side sectional view. The coupling portion 20 is placed with the sleeve 25 on an adapter portion 30 of a handle 31. The locking element 26 is engaged in a recess in the adapter section 30. In this illustration, also a pivot limiting leg 27 can be seen, which is mounted on the blade housing 02 and its pivoting about the pivot axis 19 when reaching a maximum pivot angle on a stop 28 on the coupling portion 20 comes to rest, thereby preventing further pivoting of the blade housing.

Fig. 4 zeigt eine Seitendarstellung eines vollständigen Rasierapparats, welcher die Rasierklingeneinheit 01 und den Handgriff 31 umfasst. Der Handgriff 31 besitzt einen Grundkörper 32 aus einem Hartkunststoff, an dessen Seitenflächen Greifabschnitte 33 aus einer Kunststoffweichkomponente angeformt sind. Fig. 4 11 shows a side view of a complete razor including the razor blade unit 01 and the handle 31. The handle 31 has a base body 32 made of a hard plastic, on the side surfaces gripping portions 33 are formed from a plastic soft component.

Fig. 5 zeigt eine Querschnittsansicht des Handgriffs 31, gesehen entlang einer Schnittlinie V-V, welche in Fig. 4 eingezeichnet ist. Der Grundkörper 32 besitzt einen im Wesentlichen U-förmigen Querschnitt, in welchem ein Metallgewicht 34 aufgenommen ist. Das Metallgewicht 34 erstreckt sich vorzugsweise aus dem vorderen Bereich des Grundkörpers 32 heraus und bildet dort den Adapterabschnitt 30 (Fig. 6). Links und rechts des Metallgewichts 34 sind im Grundkörper 32 lang gestreckte Nuten 35 eingebracht, in welche Haltestege 36 eines Griffdeckels 37 eingepresst sind. Der Griffdeckel 37 ist ebenfalls aus einem Hartkunststoff gefertigt und deckt das Metallgewicht 34 vollflächig ab. Zur Lagestabilisierung des Metallgewichts 34 können an der Unterseite des Griffdeckels 37 Erhebungen angebracht sein, die in das Metallgewicht 34 eingreifen. Um eine dichte Verbindung zwischen dem Griffdeckel 37 und dem Grundkörper 32 herzustellen, ist der Griffdeckel 37 in entsprechende Ausnehmungen des Grundkörpers 32 eingepasst, wobei vorzugsweise eine Abdichtlamelle 38 im Auflagebereich vorgesehen ist, die beim Einpressen des Griffdeckels in den Grundkörper verformt wird und als umlaufende Dichtung wirkt. Fig. 5 shows a cross-sectional view of the handle 31, as seen along a section line VV, which in Fig. 4 is drawn. The main body 32 has a substantially U-shaped cross section, in which a metal weight 34 is received. The metal weight 34 preferably extends out of the front region of the main body 32 and forms there the adapter section 30 (FIG. Fig. 6 ). Left and right of the metal weight 34 32 elongated grooves 35 are introduced in the base body, in which holding webs 36 of a handle cover 37 are pressed. The handle cover 37 is also made of a hard plastic and covers the metal weight 34 over its entire surface. To stabilize the position of the metal weight 34 37 surveys can be attached to the underside of the handle cover be that engage in the metal weight 34. In order to produce a tight connection between the handle cover 37 and the base body 32, the handle cover 37 is fitted in corresponding recesses of the base body 32, wherein preferably a Abdichtlamelle 38 is provided in the support area, which is deformed during pressing of the handle cover in the body and as a circumferential seal acts.

Fig. 6 zeigt den vorderen Abschnitt des Handgriffs 31 mit dem Adapterabschnitt 30. Auf dem Adapterabschnitt 30 ist in Achsrichtung verschiebbar eine Abwurfhülse 40 angeordnet, welche vom Benutzer in Richtung zur Rasierklingeneinheit verschoben werden kann, um die Verbindung zwischen der Hülse 25 des Kupplungsabschnitts 20 und dem Adapterabschnitt 30 zu lösen. Für eine leichtere Bedienbarkeit besitzt die Abwurfhülse 40 an ihrer Oberseite eine Oberflächenstrukturierung 41. Fig. 6 shows the front portion of the handle 31 with the adapter portion 30. On the adapter portion 30 slidably disposed in the axial direction, a discharge sleeve 40 which can be moved by the user towards the razor blade unit to the connection between the sleeve 25 of the coupling portion 20 and the adapter portion 30th to solve. For ease of operation, the discharge sleeve 40 has a surface structuring 41 on its upper side.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

01 -01 -
RasierklingeneinheitA razor blade assembly
02 -02 -
Klingengehäuseblade housing
03 -03 -
--
04 -04 -
KlingenSound
05 -05 -
Schneidkantecutting edge
06 -06 -
Klingenfenstersound window
07 -07 -
Seitenwändeside walls
08 -08 -
--
09 -09 -
Schaumkantefoam edge
10 -10 -
Gleitstreifenlubricating strip
11 -11 -
--
12 -12 -
--
13 -13 -
--
14 -14 -
Deckelcover
15 -15 -
--
16 -16 -
--
17 -17 -
Vertiefungen am DeckelDepressions on the lid
18 -18 -
mittlerer Steg am Deckelmiddle bridge on the lid
19 -19 -
Schwenkachseswivel axis
20 -20 -
Kupplungsabschnittcoupling section
21 -21 -
Filmscharnierfilm hinge
22 -22 -
Scharnierschenkelhinge leg
23 -23 -
Dämpfungskomponentedamping component
24 -24 -
Tragelementsupporting member
25 -25 -
Hülseshell
26 -26 -
Rastelementlocking element
27 -27 -
SchwenkbegrenzungsschenkelSwivelStop leg
28 -28 -
Anschlagattack
29 -29 -
--
30 -30 -
Adapterabschnittadapter section
31 -31 -
Handgriffhandle
32 -32 -
Grundkörperbody
33 -33 -
Greifabschnittecross sections
34 -34 -
Metallgewichtmetal weight
35 -35 -
Nutengroove
36 -36 -
Haltestegeretaining webs
37 -37 -
GriffdeckelEnd cap
38 -38 -
AbdichtlamelleAbdichtlamelle
39 -39 -
--
40 -40 -
Abwurfhülseejector sleeve
41 -41 -
Oberflächenstrukturierungsurface structuring

Claims (8)

  1. A razor blade unit (01), comprising
    - a blade housing (02) in which a plurality of blades (04) having cutting edges (05) lying parallel to a skin contact plane is arranged;
    - a coupling section (20) which is preferably detachably attachable to a handle (31);
    - a connecting section having at least one film hinge (21) between blade housing (02) and coupling section (20), which film hinge defines a pivot axis extending parallel to the skin contact plane, and having an elastic damping component (23) which surrounds one or more sides of the film hinge (21) and is integrally formed both on the blade housing (02) and the coupling section (20); and
    - a foam edge (09) which, with respect to the shaving direction, is arranged in front of the cutting edges (05) of the blades (04) for pretensioning the skin during shaving;
    characterized in that the pivot axis extending through the film hinge (21) is positioned between the foremost boundary of the foam edge (09) with respect to the shaving direction and the cutting edge (05) lying closest to the foam edge (09), and that on each side of the blade housing's side walls (07) extending transversely to the cutting edges (05) one film hinge (21) is arranged, wherein from each of the hinges, two hinge sidepieces (22) extend which are surrounded by the damping component (23).
  2. The razor blade unit according to claim 1, characterized in that the hinge sidepieces (22) of the film hinge (21) are made of a plastic and are integrally formed with the adjacent sections of the blade housing or, respectively, the coupling section, and that the damping component (23) is made of an elastomeric soft plastic which surrounds the hinge sidepieces (22) on all sides.
  3. The razor blade unit according to claim 2, characterized in that the foam edge (09) is made of the same soft plastic as the damping component (23) and is injection molded on the hard plastic of the blade housing (02) in a common manufacturing step with the damping component.
  4. The razor blade unit according to any one of the claims 1 to 3, characterized in that a pivot-limiting sidepiece (27) is attached to the blade housing (02) or, respectively, the coupling section (20), which pivot-limiting sidepiece abuts against an opposing limit stop (28) on the coupling section or, respectively, blade housing when a maximum pivot angle is reached.
  5. The razor blade unit according to any one of the claims 1 to 4, characterized in that the blade housing (02) is pivotable with respect to the longitudinal axis of the handle (31) through an angle of between 0° and 45°.
  6. The razor blade unit according to any one of the claims 1 to 5, characterized in that the coupling section (20) comprises a sleeve (25) which is detachably attachable onto an adaptor section (30) of the handle (31).
  7. The razor blade unit according to any one of the claims 1 to 6, characterized in that five blades (04) are placed in the blade housing (02).
  8. The razor blade unit according to any one of the claims 1 to 7, characterized in that the razor blade unit has a slide strip (10) which, with respect to the shaving direction, is arranged after the cutting edges (05) of the blades (04).
EP08104078A 2008-05-23 2008-05-23 Razor blade unit with film hinge Active EP2123410B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT08104078T ATE517722T1 (en) 2008-05-23 2008-05-23 RAZOR BLADE UNIT WITH FILM HINGE
ES08104078T ES2370364T3 (en) 2008-05-23 2008-05-23 UNIT OF SHAVING BLADES WITH MEMBRANE GOZNE.
EP08104078A EP2123410B1 (en) 2008-05-23 2008-05-23 Razor blade unit with film hinge
US12/470,685 US8096054B2 (en) 2008-05-23 2009-05-22 Razor blade unit with film hinge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08104078A EP2123410B1 (en) 2008-05-23 2008-05-23 Razor blade unit with film hinge

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EP2123410A1 EP2123410A1 (en) 2009-11-25
EP2123410B1 true EP2123410B1 (en) 2011-07-27

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US9475202B2 (en) 2012-09-27 2016-10-25 Shavelogic, Inc. Shaving systems
EP2902156A1 (en) 2014-01-31 2015-08-05 Feintechnik GmbH Eisfeld Shaver with a handle and a rotatable cutting unit
US9522472B2 (en) 2014-01-31 2016-12-20 Feintechnik Gmbh Eisfeld Razor with a handle and rotatable cutting unit

Also Published As

Publication number Publication date
US8096054B2 (en) 2012-01-17
ES2370364T3 (en) 2011-12-14
US20090288299A1 (en) 2009-11-26
ATE517722T1 (en) 2011-08-15
EP2123410A1 (en) 2009-11-25

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