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EP0160861B1 - Razor head frame with push-on and pull-off connectors - Google Patents

Razor head frame with push-on and pull-off connectors Download PDF

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Publication number
EP0160861B1
EP0160861B1 EP85104533A EP85104533A EP0160861B1 EP 0160861 B1 EP0160861 B1 EP 0160861B1 EP 85104533 A EP85104533 A EP 85104533A EP 85104533 A EP85104533 A EP 85104533A EP 0160861 B1 EP0160861 B1 EP 0160861B1
Authority
EP
European Patent Office
Prior art keywords
head frame
locking elements
locking
housing
ramp
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
Application number
EP85104533A
Other languages
German (de)
French (fr)
Other versions
EP0160861A1 (en
Inventor
Roland Ullmann
Kurt Beutel
Hans-Eberhard Heintke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Priority to AT85104533T priority Critical patent/ATE29688T1/en
Publication of EP0160861A1 publication Critical patent/EP0160861A1/en
Application granted granted Critical
Publication of EP0160861B1 publication Critical patent/EP0160861B1/en
Expired 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3853—Housing or handle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3853—Housing or handle
    • B26B19/386—Means for attaching the head thereto

Definitions

  • the invention relates to a dry shaving apparatus with a housing, a removable shaving head frame carrying the upper knife and a device for locking and unlocking the shaving head frame, consisting of locking elements movably arranged in the housing, which, under spring pressure, protrude from the narrow sides of the housing and into the End cheeks of the shaving head frame arranged, operating elements acting on the locking elements.
  • the object of the present invention is to provide a device for locking and unlocking a shaving head frame which does not have the disadvantages mentioned above.
  • the device is intended in particular to ensure that the shaving head frame can be easily removed or placed on the housing.
  • ramp ramps leading to the locking position of the locking elements are provided on the inner walls of the end cheeks and in that radially movable operating elements are arranged in the end cheeks, the walls of which act on the locking elements in the actuated state and form discharge ramps for the locking elements.
  • run-up ramps provided on the inner walls of the end cheeks of the shaving head frame and leading to the latching position of the locking elements facilitate the placement of the shaving head frame on the housing in that the locking elements are pushed into the latching position over a longer distance with a corresponding incline, the resultant ends of the ramp ramp the heels leading to the cheeks can be advantageously used as locking stops for the locking elements.
  • the easy removal of the shaving head frame from the housing is achieved via the operating elements arranged in the forehead cheeks, which bend or rotate under the action of pressure around their attachment point and in this state form discharge ramps for which, during the course of this process, locking elements are pushed out from the locking positions.
  • the operating elements pressed into the shaving head frame come into contact with the locking elements at an angle, as a result of which the force component resulting from this angular position pushes the shaving head frame away from the housing via the discharge ramps.
  • the control element preferably consists of a resilient or pivotally mounted lever arm which is arranged in a recess provided in the front cheek of the shaving head frame.
  • one end of the lever arm is fastened to a transverse web provided in the recess and, with its end acting on the locking element, lies against the inner wall of the forehead cheek in the idle state.
  • the inner wall of the lever arm serves as a discharge ramp, the inclination of which results according to the invention during the actuation process of the lever arm as a function of its radial deflection.
  • the ramp inclination of the discharge ramp of the lever arm can preferably be changed beyond the blocking effect of the discharge ramp.
  • the particular advantage of this measure is the fact that the separation process of the shaving head frame and the housing can be accelerated while the locking elements slide along the discharge ramps of the lever arms by increasing the radial deflection of the lever arms and the resulting change in the ramp inclination.
  • a ramp is provided on both sides of an operating element on the end cheeks of the shaving head frame.
  • the walls leading from the slope end of the discharge ramps to the inner walls are preferably designed as detent stops for the locking elements.
  • FIG. 1 shows a dry shaving apparatus with a shaving head frame 2 which can be removed from a housing 1.
  • a shaving head frame 2 which can be removed from a housing 1.
  • an upper knife 3 is fastened, which interacts with a lower knife 4, which is set in a reciprocating motion by a motor, not shown, housed in the housing 1, via a rocker arm 5.
  • a helical spring 6 presses the lower knife 4 against the upper knife 3 in a known manner.
  • the end faces 7 and 8 of the housing 1 and the end cheeks 20, 21 of the shaving head frame 2 are Identical design, so that only one of the end faces with one of the front cheeks is referred to and described in more detail below.
  • locking elements 9 protrude from the two end faces 7 and 8 of the housing 1. 2, together with the compression springs 11 acting on them, are accommodated in recesses 13 in the housing 1 and by means of resilient locking lugs 15 which engage in grooves 17 of a predetermined length provided in the walls of the recesses 13 secured against falling out of the recesses 13 and rotation.
  • the end of the locking elements 9 protruding from the recesses 13 is conical, the cone tip being flattened or rounded.
  • the wall of the housing 1 is slightly offset inwards in the area of the shaving head frame 2, whereby a circumferential ledge 19 is formed which serves as a deflection for the shaving head frame 2 when it is placed on the housing 1.
  • narrow U-shaped recesses 22 are provided, running in the longitudinal direction of the end cheeks and from the end of the shaving head frame 2 seated on the ledge 19, leading to the level of the locking elements 9.
  • an operating element 24 in the form of an elongated button, rotatable or, as shown, resilient.
  • a wide transverse web 42 is provided in the recesses 22, to which the operating elements 24 made of resilient material are fastened, e.g. through a clip connection.
  • the crossbars 24 can also be mounted as a round rod and rotatably in the recesses in order to rotate a deflection, e.g. rigidly designed controls.
  • control elements 24 facing away from the ledge 19 lie on the one hand on the locking elements 9 and on the other hand on the inner walls 26 of the end cheeks 20 and 21, the control elements 24 and the inner walls 26 being provided with interlocking shoulders 28 and 30 in the contact area.
  • Elevations 32 are provided on the operating elements 24, which protrude in the locked state of the shaving head frame 2 and the housing 1 from the recesses 22 or from the outer contour of the front cheeks 20 and 21.
  • the elevations 32 identify the pressure area for the unlocking process on the operating elements 24.
  • ramp ramps 34 and 35 are formed on the inner walls 26 with a predetermined slope.
  • the run-up ramps 34 and 35 end in the area of the locking elements 9.
  • the operating elements 24 By actuating the operating elements 24 provided in the end cheeks 20 and 21 via the elevations 32, they bend, as can be seen in FIG. 3, radially inward about the transverse webs 42 into the shaving head frame 2 and press the locking elements 9 against the pressure of the springs 11 away from the detent stops 38 and 39 into the recesses 13.
  • the walls of the operating elements 24 acting on the locking elements 9 assume an inclined position corresponding to the radial deflection and in this way form discharge ramps 44 for the locking elements 9. If the discharge ramps 44 and the ramp ramps 34 and 35 are on the same level, the unlocked ones slide Locking elements 9 along the discharge ramps under the action of force components which result from the actuating pressure exerted on the operating elements 24.
  • the shaving head frame 2 stands out from the ledge 19 of the housing 1. As the operating elements 24 deflect further during this sliding process, the inclination of the downward ramps is amplified, which has an accelerating effect on the sliding process.
  • the unlocking process is initially supported and facilitated by the fact that, in the locked state of the shaving head frame 2 on the housing 1, the existing contact pressure of the lower knife 4 on the upper knife 3 fastened in the shaving head frame 2 can also be used.
  • the operating elements 24 are in the position shown in FIG. in contact with the inner walls 26 of the end cheeks 20 and 21.
  • the shaving head frame 2 is pushed over the recessed area of the housing 1, the locking elements 9 coming into contact with the run-up ramps 34, 35, the gradual gradients provided for the locking elements 9 against the pressure of the Push the compression springs 11 into the recesses 13.
  • the compression springs 11 press the locking elements 9 partially out of the recesses 13 into the latching position, this process being supported by the obliquely designed latching stops 38 and 39 and the inclined surfaces provided on the locking elements 9 .
  • FIG. 4 shows part of the housing 1 of the razor with a locking element 9 protruding from the end face 8, the ends of which are chamfered and extend transversely to the end face.
  • An identically designed locking element is provided in the end face 7.
  • the end cheeks 20 and 21 of the shaving head frame 2 are connected to one another via a front wall 36 and a rear wall 37 shown in broken lines.
  • two run-up ramps 34 and 35 are provided, with an increasing gradient in the removal direction.
  • detent stops 38 and 39 the walls of which are chamfered, are produced accordingly the slope of the ends of the locking elements 9, which come to rest in the locking position on these detent stops.
  • Between the two ramp ramps 34 and 35 is the resilient or pivotable in a U-shaped recess.
  • Operating element 24 is arranged, the end of which in the removal direction lies either against the inner wall 26 of the end cheek 20 or, as shown here, against the immovable foot part of a further operating element 25.
  • the end cheek 21, whose inner wall cannot be seen due to the perspective illustration, has an identical design to the inner wall 26 of the end cheek 20. This also applies to the outer walls of the end cheeks 21 and 20 which only show the operating elements 24 and 25 with the respective elevations 32 and 33 running in the longitudinal direction of the end cheeks.

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

Abstract

Device for locking and unlocking a cutting head frame on the housing of a dry shaver, with up ramps and down ramps provided on the cutting head frame as guide means for locking elements located in the housing.

Description

Die Erfindung betrifft einen Trockenrasierapparat mit einem Gehäuse, einem das Obermesser tragenden, abnehmbaren Scherkopfrahmen und einer Vorrichtung zum Verriegeln und Entriegeln des Scherkopfrahmens, bestehend aus im Gehäuse bewegbar angeordneten Verriegelungselementen, die, unter Federdruck stehend, aus den Schmalseiten des Gehäuses herausragen und aus in den Stirnwangen des Scherkopfrahmens angeordneten, auf die Verriegelungselemente einwirkenden Bedienungselementen.The invention relates to a dry shaving apparatus with a housing, a removable shaving head frame carrying the upper knife and a device for locking and unlocking the shaving head frame, consisting of locking elements movably arranged in the housing, which, under spring pressure, protrude from the narrow sides of the housing and into the End cheeks of the shaving head frame arranged, operating elements acting on the locking elements.

Aus der DE-A-2519881 ist ein Trockenrasierapparat nach dem Oberbegriff des Anspruchs 1 bekannt. Die Nachteile einer derartigen Konstruktion bestehen darin, dass zur Überwindung der Verriegelung gleichzeitig Druckkräfte und entgegengesetzt gerichtete Zugkräfte am Scherkopfrahmen und Gehäuse aufgebracht werden müssen, wobei erschwerend hinzukommt, dass die Kraftkomponente der zusammengedrückten Verriegelungsfeder das Bedienungselement über das Verriegelungselement im rechten Winkel beaufschlagt und somit den Abzugsvorgang ungünstig belastet. Da die am Scherkopfrahmen und Gehäuse aufzubringenden Zugkräfte grösser sein müssen, als die Kraftkomponenten der Verriegelungsfedern, läuft der Entriegelungsvorgang ruckartig ab, was von dem Benutzer als unangenehm empfunden wird.From DE-A-2519881 a dry shaver according to the preamble of claim 1 is known. The disadvantages of such a construction are that to overcome the locking pressure forces and oppositely directed tensile forces must be applied to the shaving head frame and housing at the same time, which complicates the fact that the force component of the compressed locking spring acts on the control element via the locking element at a right angle and thus the pull-off process unfavorably burdened. Since the tensile forces to be exerted on the shaving head frame and housing must be greater than the force components of the locking springs, the unlocking process takes place jerkily, which the user perceives as unpleasant.

Aufgabe der vorliegende Erfindung ist es eine Vorrichtung zum Verriegeln und Entriegeln eines Scherkopfrahmens zu schaffen, die obengenannte Nachteile nicht aufweist. Die Vorrichtung soll insbesondere gewährleisten, dass der Scherkopfrahmen vom Gehäuse leicht abnehmbar bzw. aufsetzbar ist.The object of the present invention is to provide a device for locking and unlocking a shaving head frame which does not have the disadvantages mentioned above. The device is intended in particular to ensure that the shaving head frame can be easily removed or placed on the housing.

Diese Aufgabe wird nach der Erfindung dadurch gelöst, dass an den Innenwandungen der Stirnwangen zur Raststellung der Verriegelungselemente führende Auflauframpen vorgesehen sind und dass in den Stirnwangen radial bewegbare Bedienungselemente angeordnet sind, deren auf die Verriegelungselemente einwirkende Wände im betätigten Zustand Ablauframpen für die Verriegelungselemente bilden.This object is achieved according to the invention in that ramp ramps leading to the locking position of the locking elements are provided on the inner walls of the end cheeks and in that radially movable operating elements are arranged in the end cheeks, the walls of which act on the locking elements in the actuated state and form discharge ramps for the locking elements.

Die an den Innenwandungen der Stirnwangen des Scherkopfrahmens vorgesehenen, zur Raststellung der Verriegelungselemente führenden Auflauframpen erleichtern das Aufsetzen des Scherkopfrahmens auf das Gehäuse dadurch, dass die Verriegelungselemente über einen längeren Weg mit entsprechender Steigung in die Rastposition geschoben werden, wobei die sich am Auflauframpenende ergebenden, zu den Stirnwangen führenden Absätze in vorteilhafter Weise als Rastanschläge für die Verriegelungselemente nutzbar gemacht werden.The run-up ramps provided on the inner walls of the end cheeks of the shaving head frame and leading to the latching position of the locking elements facilitate the placement of the shaving head frame on the housing in that the locking elements are pushed into the latching position over a longer distance with a corresponding incline, the resultant ends of the ramp ramp the heels leading to the cheeks can be advantageously used as locking stops for the locking elements.

Die leichte Entnehmbarkeit des Scherkopfrahmens vom Gehäuse wird über die in den Stirnwangen angeordneten Bedienungselemente erzielt, die unter Druckeinwirkung sich um ihren Befestigungspunkt biegen oder drehen und in diesem Zustand Ablauframpen bilden, für die im Verlauf dieses Vorganges aus den Raststellungen mit herausgedrückten Verriegelungselemente. Die in den Scherkopfrahmen hinein gedrückten Bedienungselemente kommen unter einem Winkel zur Anlage an die Verriegelungselemente, wodurch die aus dieser Winkelstellung resultierende Kraftkomponente den Scherkopfrahmen über die Ablauframpen vom Gehäuse wegschiebt.The easy removal of the shaving head frame from the housing is achieved via the operating elements arranged in the forehead cheeks, which bend or rotate under the action of pressure around their attachment point and in this state form discharge ramps for which, during the course of this process, locking elements are pushed out from the locking positions. The operating elements pressed into the shaving head frame come into contact with the locking elements at an angle, as a result of which the force component resulting from this angular position pushes the shaving head frame away from the housing via the discharge ramps.

Das Bedienungselement besteht vorzugsweise aus einem federnden oder schwenkbar gelagerten Hebelarm, der in einer in der Stirnwange des Scherkopfrahmens vorgesehenen Ausnehmung angeordnet ist.The control element preferably consists of a resilient or pivotally mounted lever arm which is arranged in a recess provided in the front cheek of the shaving head frame.

Zweckmässigerweise ist das ein Ende des Hebelarmes an einem in der Ausnehmung vorgesehenen Quersteg befestigt und liegt mit seinem auf das Verriegelungselement einwirkenden Ende im Ruhezustand an der Innenwandung der Stirnwange an.Expediently, one end of the lever arm is fastened to a transverse web provided in the recess and, with its end acting on the locking element, lies against the inner wall of the forehead cheek in the idle state.

Gemäss einer bevorzugten Ausführungsform dient die Innenwandung des Hebelarmes als Ablauframpe, deren Neigung sich nach der Erfindung während des Betätigungsvorganges des Hebelarmes in Abhängigkeit von dessen radialen Ausschlag ergibt.According to a preferred embodiment, the inner wall of the lever arm serves as a discharge ramp, the inclination of which results according to the invention during the actuation process of the lever arm as a function of its radial deflection.

Vorzugsweise ist die Rampenneigung der Ablauframpe des Hebelarmes über die Sperrwirkung der Ablauframpe hinaus veränderbar. Der besondere Vorteil dieser Massnahme ist darin zu sehen, dass der Trennungsvorgang von Scherkopfrahmen und Gehäuse während des Entlanggleitens der Verriegelungselemente an den Ablauframpen der Hebelarme durch Erhöhung des radialen Ausschlages der Hebelarme und der daraus resultierenden Veränderung der Rampenneigung beschleunigt werden kann.The ramp inclination of the discharge ramp of the lever arm can preferably be changed beyond the blocking effect of the discharge ramp. The particular advantage of this measure is the fact that the separation process of the shaving head frame and the housing can be accelerated while the locking elements slide along the discharge ramps of the lever arms by increasing the radial deflection of the lever arms and the resulting change in the ramp inclination.

Nach der Erfindung ist jeweils beiderseits eines Bedienungselementes an den Stirnwangen des Scherkopfrahmens eine Auflauframpe vorgesehen.According to the invention, a ramp is provided on both sides of an operating element on the end cheeks of the shaving head frame.

Vorzugsweise sind die vom Steigungsende derAblauframpen zu den Innenwandungen führenden Wände als Rastanschläge für die Verriegelungselemente ausgebildet.The walls leading from the slope end of the discharge ramps to the inner walls are preferably designed as detent stops for the locking elements.

Weitere Vorteile und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung und der Zeichnung, in denen bevorzugte Ausführungsbeispiele dargestellt sind, und zwar zeigen:

  • Fig. 1 einen Teil eines Rasiergehäuses mit aufgesetztem Scherkopfrahmen in Vorderansicht mit Teilschnitt,
  • Fig. 2 einen Längsschnitt durch eine der beiden identisch ausgebildeten Stirnwangen eines Scherkopfrahmens sowie einen Teilschnitt durch das Rasiergehäuse im Bereich eines der identisch ausgebildeten Verriegelungselemente,
  • Fig. 3 einen Längsschnitt und Teilschnitt nach Figur 2 mit einem Bedienungselement im Betätigungszustand,
  • Fig. 4 eine Explosionsdarstellung eines Scherkopfrahmens sowie des oberen Teils eines Rasiergehäuses in Perspektive.
Further advantages and details of the invention result from the following description and the drawing, in which preferred exemplary embodiments are shown, namely:
  • 1 shows a part of a razor housing with an attached shaving head frame in a front view with partial section,
  • 2 shows a longitudinal section through one of the two identical cheekbones of a shaving head frame and a partial section through the shaving housing in the area of one of the identically designed locking elements,
  • 3 shows a longitudinal section and partial section according to FIG. 2 with an operating element in the actuated state,
  • Fig. 4 is an exploded view of a shaving head frame and the upper part of a razor housing in perspective.

In Fig. 1 ist ein Trockenrasierapparat mit einem von einem Gehäuse 1 abnehmbaren Scherkopfrahmen 2 dargestellt. In dem Scherkopfrahmen 2 ist ein Obermesser 3 befestigt, das mit einem Untermesser 4 zusammenwirkt, das von einem im Gehäuse 1 untergebrachten, nicht dargestellten Motor über einen Schwinghebel 5 in hin- und hergehende Bewegung versetzt wird. Eine Schraubenfeder 6 drückt das Untermesser 4 in bekannter Weise gegen das Obermesser 3.1 shows a dry shaving apparatus with a shaving head frame 2 which can be removed from a housing 1. In the shaving head frame 2, an upper knife 3 is fastened, which interacts with a lower knife 4, which is set in a reciprocating motion by a motor, not shown, housed in the housing 1, via a rocker arm 5. A helical spring 6 presses the lower knife 4 against the upper knife 3 in a known manner.

Die Stirnseiten 7 und 8 des Gehäuses 1 sowie die Stirnwangen 20, 21 des Scherkopfrahmens 2 sind identisch ausgebildet, so dass im folgenden jeweils nur eine der Stirnseiten mit einer der Stirnwangen in Bezug genommen und näher beschrieben wird. Aus den beiden Stirnseiten 7 und 8 des Gehäuses 1 ragen, wie aus den Fig. 2, 3 oder 4 ersichtlich, Verriegelungselemente 9 heraus. Die Verriegelungselemente 9 sind, wie z.B. Fig. 2 zeigt, zusammen mit den auf sie einwirkenden Druckfedern 11 in Ausnehmungen 13 im Gehäuse 1 untergebracht und mittels vorgesehener federnder Rastnasen 15, die in, in den Wänden der Ausnehmungen 13 vorgesehenen Nuten 17 vorgegebener Länge eingreifen durch diese gegen Herausfallen aus den Ausnehmungen 13 und Verdrehung gesichert. Das aus den Ausnehmungen 13 herausragende Ende der Verriegelungselemente 9 ist kegelförmig ausgebildet, wobei die Kegelspitze abgeflacht oder abgerundet sein kann.The end faces 7 and 8 of the housing 1 and the end cheeks 20, 21 of the shaving head frame 2 are Identical design, so that only one of the end faces with one of the front cheeks is referred to and described in more detail below. As can be seen from FIGS. 2, 3 or 4, locking elements 9 protrude from the two end faces 7 and 8 of the housing 1. 2, together with the compression springs 11 acting on them, are accommodated in recesses 13 in the housing 1 and by means of resilient locking lugs 15 which engage in grooves 17 of a predetermined length provided in the walls of the recesses 13 secured against falling out of the recesses 13 and rotation. The end of the locking elements 9 protruding from the recesses 13 is conical, the cone tip being flattened or rounded.

Die Wandung des Gehäuses 1 ist im Bereich des Scherkopfrahmens 2 etwas nach innen abgesetzt, wodurch ein umlaufender Sims 19 gebildet wird, der als Ausschlag für den Scherkopfrahmen 2 beim Aufsetzen auf das Gehäuse 1 dient.The wall of the housing 1 is slightly offset inwards in the area of the shaving head frame 2, whereby a circumferential ledge 19 is formed which serves as a deflection for the shaving head frame 2 when it is placed on the housing 1.

In den beiden Stirnwangen 20 und 21 des Scherkopfrahmens 2 sind schmale U-förmige Ausnehmungen 22, in Längsrichtung der Stirnwangen verlaufend und von dem auf dem Sims 19 aufsitzenden Ende des Scherkopfrahmens 2, bis in Höhe der Verriegelungselemente 9 führend, vorgesehen. In den Ausnehmungen 22 ist jeweils ein Bedienungselement 24 in Form einer länglichen Taste, drehbar oder, wie dargestellt, federnd angeordnet. Zu diesem Zweck ist in den Ausnehmungen 22 ein breiter Quersteg 42 vorgesehen, an dem die aus federndem Material bestehenden Bedienungselemente 24 befestigt werden, z.B. durch eine Klip-Verbindung. Die Querstege 24 können aber auch als runder Stab und in den Ausnehmungen drehbar gelagert sein, um einen drehbaren Ausschlag, von z.B. starr ausgebildeten Bedienungselementen, zu bewirken.In the two end cheeks 20 and 21 of the shaving head frame 2, narrow U-shaped recesses 22 are provided, running in the longitudinal direction of the end cheeks and from the end of the shaving head frame 2 seated on the ledge 19, leading to the level of the locking elements 9. In each of the recesses 22 there is an operating element 24 in the form of an elongated button, rotatable or, as shown, resilient. For this purpose, a wide transverse web 42 is provided in the recesses 22, to which the operating elements 24 made of resilient material are fastened, e.g. through a clip connection. The crossbars 24 can also be mounted as a round rod and rotatably in the recesses in order to rotate a deflection, e.g. rigidly designed controls.

Die Bedienungselemente 24 liegen mit ihren dem Sims 19 abgewandten Enden einerseits an den Verriegelungselementen 9 und andererseits an den Innenwandungen 26 der Stirnwangen 20 und 21 an, wobei die Bedienungselemente 24 sowie die Innenwandungen 26 im Anlagebereich mit ineinandergreifenden Absätzen 28 und 30 versehen sind.The ends of the control elements 24 facing away from the ledge 19 lie on the one hand on the locking elements 9 and on the other hand on the inner walls 26 of the end cheeks 20 and 21, the control elements 24 and the inner walls 26 being provided with interlocking shoulders 28 and 30 in the contact area.

An den Bedienungselementen 24 sind Erhebungen 32 vorgesehen, die im verriegelten Zustand von Scherkopfrahmen 2 und Gehäuse 1 aus den Ausnehmungen 22 bzw. aus der äusseren Kontour der Stirnwangen 20 und 21 herausragen. Die Erhebungen 32 kennzeichnen den Druckbereich für den Entriegelungsvorgang an den Bedienungselementen 24.Elevations 32 are provided on the operating elements 24, which protrude in the locked state of the shaving head frame 2 and the housing 1 from the recesses 22 or from the outer contour of the front cheeks 20 and 21. The elevations 32 identify the pressure area for the unlocking process on the operating elements 24.

Beiderseits der Ausnehmungen 22 sind, parallel zu diesen verlaufend, Auflauframpen 34 und 35 an den Innenwandungen 26 mit vorgegebener Steigung angeformt. Die Auflauframpen 34 und 35 enden im Bereich der Verriegelungselemente 9.On both sides of the recesses 22, parallel to these, ramp ramps 34 and 35 are formed on the inner walls 26 with a predetermined slope. The run-up ramps 34 and 35 end in the area of the locking elements 9.

Die Rückführung des Steigungsendes der Auflauframpen 34 und 35 zu den Innenwandungen 26 führt zu Absätzen, die als Rastanschläge 38 und 39 für die Verriegelungselemente 9 dienen, wobei diese Rastanschläge mit einer Schräge versehen sind, die der Kegelform der Verriegelungselemente 9 entspricht, was sich günstig auf den Entriegelungssowie Verriegelungsvorgang auswirkt.The return of the slope end of the ramp ramps 34 and 35 to the inner walls 26 leads to paragraphs which serve as locking stops 38 and 39 for the locking elements 9, these locking stops being provided with a bevel which corresponds to the conical shape of the locking elements 9, which is favorable affects the unlocking and locking process.

Durch Betätigung der in den Stirnwangen 20 und 21 vorgesehenen Bedienungselemente 24 über die Erhebungen 32, biegen sich diese, wie aus Figur 3 ersichtlich, um die Querstege 42 radial nach innen in den Scherkopfrahmen 2 hinein und drücken die Verriegelungselemente 9 gegen den Druck der Federn 11 von den Rastanschlägen 38 und 39 weg in die Ausnehmungen 13 hinein. Die auf die Verriegelungselemente 9 einwirkenden Wände der Bedienungselemente 24 nehmen dabei eine dem radialen Ausschlag entsprechende Schrägstellung ein und bilden auf diese Weise Ablauframpen 44 für die Verriegelungselemente 9. Befinden sich die Ablauframpen 44 und die Auflauframpen 34 und 35 auf gleicher Ebene, dann gleiten die entriegelten Verriegelungselemente 9 an den Ablauframpen entlang unter Einwirkung von Kraftkomponenten, die aus dem auf die Bedienungselemente 24 ausgeübten Betätigungsdruck resultieren. Der Scherkopfrahmen 2 hebt sich dabei vom Sims 19 des Gehäuses 1 ab. Durch weitergehendes Einfedern der Bedienungselemente 24 während dieses Abgleitvorganges erfährt die Neigung der Ablauframpen eine Verstärkung, die sich beschleunigend auf den Abgleitvorgang auswirkt.By actuating the operating elements 24 provided in the end cheeks 20 and 21 via the elevations 32, they bend, as can be seen in FIG. 3, radially inward about the transverse webs 42 into the shaving head frame 2 and press the locking elements 9 against the pressure of the springs 11 away from the detent stops 38 and 39 into the recesses 13. The walls of the operating elements 24 acting on the locking elements 9 assume an inclined position corresponding to the radial deflection and in this way form discharge ramps 44 for the locking elements 9. If the discharge ramps 44 and the ramp ramps 34 and 35 are on the same level, the unlocked ones slide Locking elements 9 along the discharge ramps under the action of force components which result from the actuating pressure exerted on the operating elements 24. The shaving head frame 2 stands out from the ledge 19 of the housing 1. As the operating elements 24 deflect further during this sliding process, the inclination of the downward ramps is amplified, which has an accelerating effect on the sliding process.

Die Entriegelungsvorgang wird anfänglich noch dadurch unterstützt und erleichtert, dass im verriegelten Zustand von Scherkopfrahmen 2 am Gehäuse 1 der vorhandene Anlagedruck des Untermessers 4 an den im Scherkopfrahmen 2 befestigten Obermesser 3 zusätzlich genutzt werden kann.The unlocking process is initially supported and facilitated by the fact that, in the locked state of the shaving head frame 2 on the housing 1, the existing contact pressure of the lower knife 4 on the upper knife 3 fastened in the shaving head frame 2 can also be used.

Beim Aufsetzen des Scherkopfrahmens 2 auf das Gehäuse 1 befinden sich die Bedienungselemente 24 in der aus Fig. 2 ersichtlichen Position, d.h. in Anlage an den Innenwandungen 26 der Stirnwangen 20 und 21. Der Scherkopfrahmen 2 wird über den zurückgesetzten Bereich des Gehäuses 1 geschoben, wobei die Verriegelungselemente 9 zur Anlage an die Auflauframpen 34, 35 gelangen, deren vorgesehene stetige Steigungen die Verriegelungselemente 9 gegen den Druck der Druckfedern 11 in die Ausnehmungen 13 hineinschieben. Nach Überfahren der Steigungsenden der Auflauframpen 34 und 35 drücken die Druckfedern 11 die Verriegelungselemente 9 zum Teil aus den Ausnehmungen 13 heraus in die Rastposition hinein, wobei dieser Vorgang durch die schräg ausgebildeten Rastanschläge 38 und 39 und die an den Verriegelungselementen 9 vorgesehenen schrägen Flächen unterstützt wird. Fig. 4zeigt einen Teil des Gehäuses 1 des Rasierers mit einem aus der Stirnseite 8 hervorstehenden Verriegelungselement 9, dessen Enden abgeschrägt sind und quer zur Stirnseite verlaufen. Ein identisch ausgebildetes Verriegelungselement ist in der Stirnseite 7 vorgesehen. Die Stirnwangen 20 und 21 des Scherkopfrahmens 2 sind über eine unterbrochen dargestellte Vorderwand 36 und eine Rückwand 37 miteinander verbunden.When the shaving head frame 2 is placed on the housing 1, the operating elements 24 are in the position shown in FIG. in contact with the inner walls 26 of the end cheeks 20 and 21. The shaving head frame 2 is pushed over the recessed area of the housing 1, the locking elements 9 coming into contact with the run-up ramps 34, 35, the gradual gradients provided for the locking elements 9 against the pressure of the Push the compression springs 11 into the recesses 13. After driving over the slope ends of the ramp ramps 34 and 35, the compression springs 11 press the locking elements 9 partially out of the recesses 13 into the latching position, this process being supported by the obliquely designed latching stops 38 and 39 and the inclined surfaces provided on the locking elements 9 . Fig. 4 shows part of the housing 1 of the razor with a locking element 9 protruding from the end face 8, the ends of which are chamfered and extend transversely to the end face. An identically designed locking element is provided in the end face 7. The end cheeks 20 and 21 of the shaving head frame 2 are connected to one another via a front wall 36 and a rear wall 37 shown in broken lines.

An der Innenwandung 26 der Stirnwange 20 sind zwei Auflauframpen 34 und 35 vorgesehen, mit einer in Entnahmerichtung ansteigenden Steigung. Durch die Rückführung der Auflauframpen zur Innenwandung 26 entstehen Rastanschläge 38 und 39, deren Wände abgeschrägt sind, entsprechend der Schräge der Enden der Verriegelungselemente 9, die in Verriegelungsposition auf diesen Rastanschlägen zur Anlage kommen. Zwischen den beiden Auflauframpen 34 und 35 ist in einer U-förmigen Ausnehmung das federnd oder schwenkbare. Bedienungselement 24 angeordnet, dessen in Entnahmerichtung gelegenes Ende entweder an der Innenwandung 26 der Stirnwange 20 oder, wie hier dargestellt, an dem unbeweglichen Fussteil eines weiteren Bedienungselementes 25 anliegt.On the inner wall 26 of the front cheek 20, two run-up ramps 34 and 35 are provided, with an increasing gradient in the removal direction. By returning the run-up ramps to the inner wall 26, detent stops 38 and 39, the walls of which are chamfered, are produced accordingly the slope of the ends of the locking elements 9, which come to rest in the locking position on these detent stops. Between the two ramp ramps 34 and 35 is the resilient or pivotable in a U-shaped recess. Operating element 24 is arranged, the end of which in the removal direction lies either against the inner wall 26 of the end cheek 20 or, as shown here, against the immovable foot part of a further operating element 25.

Die Stirnwange 21, deren Innenwandung aufgrund der perspektivischen Darstellung nicht ersichtlich ist, weist eine mit der Innenwandung 26 der Stirnwange 20 identische Ausbildung auf. Dies gilt auch für die Aussenwandungen der Stirnwangen 21 und 20 die lediglich die in Längsrichtung der Stirnwangen verlaufenden Bedienungselemente 24 und 25 mit den jeweiligen Erhebungen 32 und 33 zeigen.

Figure imgb0001
The end cheek 21, whose inner wall cannot be seen due to the perspective illustration, has an identical design to the inner wall 26 of the end cheek 20. This also applies to the outer walls of the end cheeks 21 and 20 which only show the operating elements 24 and 25 with the respective elevations 32 and 33 running in the longitudinal direction of the end cheeks.
Figure imgb0001

Claims (7)

1. An electric shaving appliance having a housing (1), a removable cutting-head frame (2) carrying the upper cutter (3) and a device for locking and unlocking the cutting-head frame (2) consisting of locking elements (9) which are movably mounted in the housing (2), are subject to spring pressure and project from the narrow sides of the housing (2), and of operating elements (24, 25) which are disposed in the end walls (20, 21) of the cutting-head frame (2) and act on the locking elements (9), characterised in that ascending ramps (34 and 35) leading to the detent position of the locking elements (9) are provided on the inner walls (26) of the end walls (20, 21) and that operating elements (24) which are movable radially are provided in the end walls (20, 21) and their walls acting on the locking elements (9) form descending ramps (44), in the actuated state, for the locking elements (9).
2. An appliance according to Claim 1, characterised in that the operating element (24) consists of a resilient or pivotally mounted lever arm which is disposed in a recess (22) provided in the end wall (20, 21) of the cutting-head frame (2).
3. An appliance according to one of the preceding Claims, characterised in that the one end of the lever arm (24) is secured to a transverse web (42) provided in the recess (22) and, in the state of rest, bears with its end acting on the locking element (9) against the inner wall (26) of the end wall (20, 21).
4. An appliance according to one of the preceding Claims, characterised in that the inner wall of the lever arm (24) is provided as a descending ramp (44), the ramp inclination of which is variable depending on the radial deflection of the lever arm.
5. An appliance according to one of the preceding Claims, characterised in that the ramp inclination of the descending ramp (44) of the lever arm (24) is variable beyond the detent action of the ascending ramp (34 and 35).
6. An appliance according to one of the preceding Claims, characterised in that an ascending ramp (34, 35) is provided on the end wall (20, 21) at both sides of the recess (22) or of the operating element (24).
7. An appliance according to one of the preceding Claims, characterised in that walls leading from the end of the rise of the ascending ramps (34 and 35) to the inner walls (26) are constructed in the form of detent stops (38 and 39) for the locking elements (9).
EP85104533A 1984-04-21 1985-04-15 Razor head frame with push-on and pull-off connectors Expired EP0160861B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85104533T ATE29688T1 (en) 1984-04-21 1985-04-15 SHAVER HEAD FRAME WITH UP AND DOWN RAMPS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3415121 1984-04-21
DE3415121A DE3415121C2 (en) 1984-04-21 1984-04-21 Removable shaving head frame

Publications (2)

Publication Number Publication Date
EP0160861A1 EP0160861A1 (en) 1985-11-13
EP0160861B1 true EP0160861B1 (en) 1987-09-16

Family

ID=6234179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104533A Expired EP0160861B1 (en) 1984-04-21 1985-04-15 Razor head frame with push-on and pull-off connectors

Country Status (7)

Country Link
US (1) US4606122A (en)
EP (1) EP0160861B1 (en)
JP (1) JPS61385A (en)
AT (1) ATE29688T1 (en)
CA (1) CA1235568A (en)
DE (2) DE3415121C2 (en)
SG (1) SG32989G (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4837929A (en) * 1987-02-20 1989-06-13 Matsushita Electric Works, Ltd. Dry shaver with a readily replaceable outer shearing foil
AT387929B (en) * 1987-04-24 1989-04-10 Philips Nv DRY SHAVER WITH AT LEAST ONE SLIDING ROLLER SHUTTER
US4858319A (en) * 1987-11-09 1989-08-22 Unique Knife Manufacturing Corp. Apparatus for ensuring that a knife is opened in a desired orientation
US5014428A (en) * 1989-03-06 1991-05-14 Kyushu Hitachi Maxell, Ltd. Rotary type electric razor
AT398720B (en) * 1992-07-24 1995-01-25 Koninkl Philips Electronics Nv SHAVER WITH A SHEAR HEAD FRAME AND A FILM FRAME SUSPENDED ON THIS
DE4410543C1 (en) * 1994-03-26 1994-12-22 Braun Ag Dry shaver with top cutter frame locking
KR200396685Y1 (en) * 2005-06-21 2005-09-26 오태준 Razor with two hocking switch
JP2022155347A (en) * 2021-03-30 2022-10-13 パナソニックＩｐマネジメント株式会社 Electric shaver

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734266A (en) * 1956-02-14 schreyer
US2246586A (en) * 1939-11-09 1941-06-24 Gillette Safety Razor Co Dry shaving cutter mount
US2561241A (en) * 1948-04-28 1951-07-17 Remington Rand Inc Electric dry shaver
US2661531A (en) * 1950-01-04 1953-12-08 Remington Rand Inc Electric dry shaver construction
NL294154A (en) * 1960-01-11
US3105298A (en) * 1960-01-11 1963-10-01 Sperry Rand Corp Electric shaver cutter drive mechanism
US3092905A (en) * 1961-04-03 1963-06-11 Ever Ready Razor Products Ltd Dry shaver with flexible shear plate and means supporting the shear plate
US3369294A (en) * 1965-10-23 1968-02-20 Timac Inc Power driven wet shaver
NL7406635A (en) * 1974-05-17 1975-11-19 Philips Nv UNLOCKING SHAVER HEAD.
NL7406636A (en) * 1974-05-17 1975-11-19 Philips Nv UNLOCKING SHAVER HEAD.
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

Also Published As

Publication number Publication date
SG32989G (en) 1989-11-17
US4606122A (en) 1986-08-19
CA1235568A (en) 1988-04-26
DE3560618D1 (en) 1987-10-22
JPH0582237B2 (en) 1993-11-18
DE3415121C2 (en) 1986-06-12
ATE29688T1 (en) 1987-10-15
DE3415121A1 (en) 1985-10-31
EP0160861A1 (en) 1985-11-13
JPS61385A (en) 1986-01-06

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