EP0493544B1 - Hair-plucking head for a motor-driven depiliatory machine - Google Patents

Hair-plucking head for a motor-driven depiliatory machine Download PDF

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Publication number
EP0493544B1
EP0493544B1 EP91911240A EP91911240A EP0493544B1 EP 0493544 B1 EP0493544 B1 EP 0493544B1 EP 91911240 A EP91911240 A EP 91911240A EP 91911240 A EP91911240 A EP 91911240A EP 0493544 B1 EP0493544 B1 EP 0493544B1
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EP
European Patent Office
Prior art keywords
control element
hollow cylinder
cylinder
spring
epilation head
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP91911240A
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German (de)
French (fr)
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EP0493544A1 (en
Inventor
Hans-Eberhard Heintke
Gebhard Braun
Walter Schäfer
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Braun GmbH
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Braun GmbH
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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
    • A45D26/0023—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers with rotating clamping elements
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
    • A45D2026/008—Details of apparatus for removing superfluous hair
    • A45D2026/0085—Details of apparatus for removing superfluous hair with means for reducing noise

Definitions

  • the invention relates to a plucking head for motorized epilators, consisting of a hollow cylinder at least partially enclosed by the device housing, the working surface to be placed on the skin of which is defined by its end face, with a clamping device mounted in the hollow cylinder, consisting of at least two diametrically opposed, under spring action standing jaws which can be pressed against the inner surface of the hollow cylinder and are operatively connected to a control element arranged coaxially with the cylinder axis and a gear connection between the drive motor and the hollow cylinder and / or control element.
  • the clamping jaws are attached to the free ends of leaf springs which are attached with their other ends to the inner surface of the hollow cylinder.
  • the control element which effects the opening or closing movement of the clamping jaws is designed as a cam which acts directly on the leaf springs below the clamping jaws.
  • the invention has for its object to improve the clamping effect of the clamping device in an epilator of the type mentioned.
  • an almost uniform opening gap can advantageously be achieved when opening the clamping jaws, but if necessary also a wedge-shaped enlarged opening gap by shifting the pivot point of the clamping jaws, as a result of which the hair to be gripped can be threaded more easily.
  • the length of the plucking head can be reduced noticeably in the direction of the cylinder axis.
  • a particularly simple, smooth-running and energy-saving drive of the clamping jaws can advantageously be achieved with the features specified in claim 5.
  • an energy supply for the actuation of the jaws of a significant size is only required in the area of the closed jaws, while for the functions: "Open - keep open - close" only Frictional and inertial forces are to be overcome, which in turn can be kept low by known technical measures.
  • the patent claim 6 characterizes a further advantageous embodiment of a plucking head, the movement mechanism for the clamping jaws contains essential advantages of the variants described above, namely: full closing force over the entire closing angle range of the control element with low energy consumption.
  • Energy for actuating the jaws is only used in the closing phase, i.e. Plucking phase needed. It is proportional to the actual clamping force, which in turn is directly dependent on the force of the spring in the jaw-lever assembly and can easily be kept within narrow limits.
  • the additional spring travel that is possible due to the limited mobility of the two components relative to one another is only required for manufacturing and tolerance compensation and is insignificant with regard to an increase in force.
  • control element expedient embodiments of the control element are characterized, which can optionally be used if necessary.
  • the epilator shown in Fig. 1 consists essentially of a housing 1, in which a schematically illustrated motor 2 is housed, which can be both an electric motor fed by primary or secondary cells or directly from the network and a spring mechanism motor.
  • the housing 1 also partially encloses a hollow cylinder 3, which is part of the plucking head and can optionally be fixedly attached or rotatably mounted in the interior of the housing 1, as described in the subsequently published patent application DE 39 22 949.
  • a shaft 4 is rotatably mounted coaxially to the geometric axis A of the hollow cylinder 3 and is driven by the motor 2 via a schematically illustrated gear 5;
  • the hollow cylinder 3 can also be driven optionally via this gear 5. If a fixed axis is arranged instead of the shaft 4, there is no connection with the gear 5.
  • diametrically opposed clamping jaws 7 are also pivotally mounted on fixed axes 6, which under the action of a spring 8 on the inner surface 9 of the Apply hollow cylinder 3 and on the other hand via lever arms 10 cooperates with a control element 11, which can be designed as a cam 12, which is attached to the shaft (or axis) 4.
  • the hollow cylinder 3 is provided on its bottom with a transverse bulkhead 14 through which the shaft (or axis) 4 of the control element 11, which is designed here as a cam 12, is passed.
  • the cam 12 viewed in the direction of the end face of the hollow cylinder 3 - two axes 6 are mounted in the hollow cylinder at right angles to the cylinder axis A in mirror image to the cylinder axis A, on which two diametrically opposed clamping jaws 7 are pivotally mounted.
  • the jaws 7 are provided with lever arms 10 which cooperate with the free ends 15 with the cam 12.
  • a compression spring 8 in the form of a compression leg spiral spring is tensioned, which presses the jaws 7 in the upper region of the hollow cylinder 3 against its inner surface 9 into the closed position.
  • the clamping jaws 7 are pushed into the open position by the rotating or fixed cam 12 via the lever arms 10 and, when released by the cam 12, are pivoted back into the closed position by the spring 8.
  • a suitable lever ratio of the clamping jaws 7, formed by the distance from the pivot axis 6 to the force application point on the cam 12 on one side and to the clamping surface in the upper region 16 of the hollow cylinder 3 on the other side a favorable overall mechanical construction can be realized.
  • the jaws 7 are opened by the cam 12, but the closing takes place by spring force, the closing movement can take place extremely quickly through a suitable profile of the cam 12. This enables correspondingly longer times for threading and plucking the hair during a work cycle, and the spring-actuated clamping jaws 7 experience a high initial closing force, as a result of which captured hair is held securely.
  • the hollow cylinder 3 and the shaft or axis 4 have the same shape and are numbered in the same way.
  • the variant of the plucking head shown in FIG. 3 has a hollow cylinder with two axes 6, which are arranged in the same way as in FIG. 2 and on which clamping jaws 20 are pivotably mounted, which in the upper region 16 of the hollow cylinder 3 touch the inner surface 9 thereof.
  • the shaft (or axis) 4 guided through the transverse bulkhead 14 of the hollow cylinder 3 carries at its free end the control element 11, which is designed here as a cam disk 21.
  • Leaf springs 22 are firmly embedded in the clamping jaws 20, the free ends of which engage with spherical sliding bodies 23 in the control groove 24 of the cam disk 21.
  • the leaf spring 22 thus combines the two functions: spring action and movement transmission from the control element 11 to the Clamping jaws 20 in a single component, which in the exemplary embodiment (FIG. 2) were distributed over two components.
  • the clamping jaws 20 are pivoted over the spiral spring 22 during the rotation of the overall system by the cam disc 21 which is at rest or rotating at a suitable speed.
  • the clamping force for holding the hair is built up by overpressing the leaf springs 22 and maintained over the required angle of rotation.
  • two axes 25 directed parallel to the geometric cylinder axis A are mounted within the hollow cylinder 3, on which the clamping jaws 26 are pivotably mounted, so that the pivoting movement takes place parallel to the working surface B of the plucking head. Only one axis 25 can be seen in FIG. 4. Between the two jaws 26, a coil spring 27 is tensioned, which urge both jaws into the closed position with the inner surface 9 of the hollow cylinder 3.
  • the clamping jaws 26 are provided with lever arms 28 which cooperate with the control element 11 attached to the shaft (or axis) 4, which here is cup-shaped, with an inner surface 29 serving as a control curve, against which the lever arms 28 act at least during the pivoting movement of the clamping jaws 26 concerns.
  • the embodiment of the plucking head shown in FIG. 6 also has a transverse bulkhead 14 through which the shaft (or axis) 4 is guided, and two axes 6 which are attached in the upper part of the hollow cylinder 3 at right angles to the geometric axis A of the hollow cylinder 3.
  • Clamping jaws 30 are mounted on these axles as well as lever arms 31, which are initially independent of them and are designed separately and are thus rotatable relative to one another.
  • the lever arms 31 each have a molded, spherical sliding block 32 at their free end, which engages in the control groove 33 of a cam disk 34 fastened on the shaft (or axis) 4, which here represents the control element 11.
  • the jaws 30 partially overlap the lever arms 31 with a hood-like extension 35.
  • a spring 36 in the form of a flexible leg compression spring encompassing the associated axis 6 is tensioned between the two components and swings the clamping jaws 30 and the associated lever arms 31 apart until the lever arms 31 come to rest against the recesses in the hood-shaped extension 35 forming the stops 37.
  • clamping jaws 30, spring 36 and lever arm 31 represents a closed functional unit which is controlled by the control groove 33 the cam disc 34 is operated as follows:
  • the plucking gap opens from the closed position shown in the drawing to the maximum opening, which is kept constant via an angle of rotation determined by the profile of the control groove 33, and then the closing movement takes place via the lever arm 31 to the jaws 30 again have reached the drawn closed position.
  • the lever arm 31 now leaves the stop 37 in the direction of the geometric axis A of the hollow cylinder 3, the clamping jaws 30 maintaining the full closing force at the plucking gap over the entire closing angle range.
  • the lever arm 31 is returned by the control element 11 up to the stop 37, with which a new work cycle begins.

Landscapes

  • Manipulator (AREA)
  • Dry Shavers And Clippers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Harvester Elements (AREA)

Abstract

PCT No. PCT/DE91/00512 Sec. 371 Date Apr. 2, 1992 Sec. 102(e) Date Apr. 2, 1992 PCT Filed Jun. 22, 1991 PCT Pub. No. WO92/01405 PCT Pub. Date Feb. 6, 1992.The invention concerns a hair-plucking head for a motor-driven depilation appliance. The head has a gripping device with at least two diametrically opposed spring-biased gripper jaws which can be pressed against the inside of a hollow cylinder mounted in the casing of the appliance. The jaws operate in conjunction with a control element disposed equiaxially with the cylinder axis. The appliance also has a transmission link between the motor and the cylinder and/or the control element. The jaws are mounted to pivot on pins located inside the cylinder and driven by the control element and a lever assembly.

Description

Die Erfindung bezieht sich auf einen Zupfkopf für motorisch betriebene Epiliergeräte, bestehend aus einem vom Gerätegehäuse mindestens teilweise umschlossenen Hohlzylinder, dessen auf die Haut aufzusetzende Arbeitsfläche durch seine Stirnfläche definiert ist, mit einer im Hohlzylinder angebrachten Klemmvorrichtung, bestehend aus mindestens zwei diametral gegenüberliegenden, unter Federwirkung stehenden, gegen die Innenfläche des Hohlzylinders andrückbaren Klemmbacken, die in Wirkverbindung mit einem achsgleich mit der Zylinderachse angeordneten Steuerelement stehen und einer Getriebeverbindung zwischen Antriebsmotor und Hohlzylinder und/oder Steuerelement.The invention relates to a plucking head for motorized epilators, consisting of a hollow cylinder at least partially enclosed by the device housing, the working surface to be placed on the skin of which is defined by its end face, with a clamping device mounted in the hollow cylinder, consisting of at least two diametrically opposed, under spring action standing jaws which can be pressed against the inner surface of the hollow cylinder and are operatively connected to a control element arranged coaxially with the cylinder axis and a gear connection between the drive motor and the hollow cylinder and / or control element.

In der nachveröffentlichten Patentanmeldung DE 39 22 949 ist ein Epiliergerät dieser Art beschrieben. Bei der dort in mehreren Varianten beschriebenen Konstruktion des Zupfkopfes sind die Klemmbacken an den freien Enden von Blattfedern angebracht, die mit ihren anderen Enden an der Innenfläche des Hohlzylinders befestigt sind. Das die Öffnungs- bzw. Schließbewegung der Klemmbacken bewirkende Steuerelement ist als Nocken ausgebildet, der unterhalb der Klemmbacken direkt auf die Blattfedern einwirkt.An epilator of this type is described in the subsequently published patent application DE 39 22 949. In the construction of the plucking head described there in several variants, the clamping jaws are attached to the free ends of leaf springs which are attached with their other ends to the inner surface of the hollow cylinder. The control element which effects the opening or closing movement of the clamping jaws is designed as a cam which acts directly on the leaf springs below the clamping jaws.

Der Erfindung liegt die Aufgabe zugrunde, bei einem Epiliergerät der eingangs genannten Art die Klemmwirkung der Klemmvorrichtung zu verbessern.The invention has for its object to improve the clamping effect of the clamping device in an epilator of the type mentioned.

Diese erfinderischen Maßnahmen gewährleisten einen präzisen Bewegungsablauf der Klemmbacken. Durch die Möglichkeit der Variation der Hebelverhältnisse läßt sich die Energiebilanz hinsichtlich der aufzubringenden Kräfte zum öffnen bzw. Schließen der Klemmbacken und der Aufrechterhaltung der Klemmkraft in der Schließstellung sowie der Reibungs- und Massenträgheitskräfte günstig beeinflussen.These inventive measures ensure a precise sequence of movements of the clamping jaws. The possibility of varying the lever ratios allows the energy balance with regard to the forces to be applied to open or close the clamping jaws and to maintain the clamping force in the Favorably influence the closed position and the friction and inertia forces.

Die im Patentanspruch 2 angegebene erfindungsgemäße Ausrichtung der Achsen ist dann besonders vorteilhaft, wenn auf weitgehende Freizügigkeit hinsichtlich der Wahl der Hebellängen in Richtung der geometrischen Zylinderachse Wert gelegt wird.The alignment of the axes according to the invention specified in patent claim 2 is particularly advantageous if value is placed on extensive freedom of movement with regard to the choice of lever lengths in the direction of the geometric cylinder axis.

Durch die im Patentanspruch 3 angegebene erfindungsgemäße Ausrichtung der Achsen läßt sich in vorteilhafter Weise bei der Öffnung der Klemmbacken ein nahezu gleichmäßiger Öffnungsspalt erzielen, aber bedarfsweise auch ein keilförmig vergrößerter Öffnungsspalt durch Verschiebung des Drehpunktes der Klemmbacken, wodurch die zu erfassenden Haare leichter eingefädelt werden können. Außerdem läßt sich die Länge des Zupfkopfes in Richtung der Zylinderachse merkbar verringern.Due to the alignment of the axes according to the invention specified in claim 3, an almost uniform opening gap can advantageously be achieved when opening the clamping jaws, but if necessary also a wedge-shaped enlarged opening gap by shifting the pivot point of the clamping jaws, as a result of which the hair to be gripped can be threaded more easily. In addition, the length of the plucking head can be reduced noticeably in the direction of the cylinder axis.

Mit den in Patentanspruch 4 gekennzeichneten Maßnahmen wird erreicht, daß die Klemmbacken in vorteilhafter Weise stets in Schließstellung gedrückt werden, und erst die Öffnungsbewegung gegen die Federkraft durch das Steuerelement erfolgt. Damit ist nur für diesen Vorgang Energieaufwand erforderlich. Durch geeignete Formgebung des Steuerelements (Nocken oder Kurvenscheibe) kann insbesondere die Öffnungsbewegung beschleunigt werden.With the measures characterized in claim 4 it is achieved that the clamping jaws are always pressed in an advantageous manner in the closed position, and only the opening movement takes place against the spring force by the control element. This means that energy is only required for this process. The opening movement can in particular be accelerated by suitable shaping of the control element (cam or cam).

Ein besonders einfach aufgebauter, laufruhiger und energiesparender Antrieb der Klemmbacken läßt sich vorteilhaft mit den im Patentanspruch 5 angegebenen Merkmalen erreichen. Hier ist, umgekehrt zu den vorstehend angegebenen Ausführungsbeispielen, eine Energiezufuhr für die Klemmbackenbetätigung in nennenswerter Größe nur im Bereich geschlossener Klemmbacken erforderlich, während für die Funktionen: "Öffnen - Offenhalten - Schließen" nur Reibungs- und Massenträgheitskräfte zu überwinden sind, die ihrerseits aber durch bekannte technische Maßnahmen gering gehalten werden können.A particularly simple, smooth-running and energy-saving drive of the clamping jaws can advantageously be achieved with the features specified in claim 5. Conversely to the above-mentioned exemplary embodiments, an energy supply for the actuation of the jaws of a significant size is only required in the area of the closed jaws, while for the functions: "Open - keep open - close" only Frictional and inertial forces are to be overcome, which in turn can be kept low by known technical measures.

Der Patentanspruch 6 kennzeichnet eine weitere vorteilhafte Ausführungsform eines Zupfkopfes, dessen Bewegungsmechanismus für die Klemmbacken wesentliche Vorteile der vorstehend beschriebenen Varianten enthält, nämlich: Volle Schließkraft über den ganzen Schließwinkelbereich des Steuerelementes bei geringem Energieverbrauch. Energie zur Betätigung der Klemmbacken wird nur in der Schließphase d.h. Zupfphase gebraucht. Sie ist proportional der tatsächlichen Klemmkraft, die wiederum von der Kraft der Feder im Klemmbacken-Hebel-Verbund direkt abhängig ist und leicht in engen Grenzen gehalten werden kann. Der durch die begrenzte Beweglichkeit beider Bauteile gegeneinander mögliche zusätzliche Federweg ist nur zum Fertigungs- und Toleranzausgleich erforderlich und bezüglich einer Kraftzunahme unerheblich.The patent claim 6 characterizes a further advantageous embodiment of a plucking head, the movement mechanism for the clamping jaws contains essential advantages of the variants described above, namely: full closing force over the entire closing angle range of the control element with low energy consumption. Energy for actuating the jaws is only used in the closing phase, i.e. Plucking phase needed. It is proportional to the actual clamping force, which in turn is directly dependent on the force of the spring in the jaw-lever assembly and can easily be kept within narrow limits. The additional spring travel that is possible due to the limited mobility of the two components relative to one another is only required for manufacturing and tolerance compensation and is insignificant with regard to an increase in force.

In Anspruch 7 sind zweckmäßige Ausführungsformen des Steuerelementes gekennzeichnet, die bei Bedarf wahlweise angewendet werden können.In claim 7 expedient embodiments of the control element are characterized, which can optionally be used if necessary.

In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt.Exemplary embodiments of the invention are shown in the drawing.

Es zeigen:

Fig. 1
die Ansicht eines Epiliergerätes mit teilweise geschnittenem Zupfkopf und schematisch dargestellten Bauteilen im Gerätegehäuse,
Fig. 2
eine erste Ausführungsform des Zupfkopfes im Längsschnitt,
Fig. 3
eine zweite Ausführungsform des Zupfkopfes im Längsschnitt,
Fig.
4 eine dritte Ausführungsform des Zupfkopfes im Längsschnitt,
Fig. 5
den Zupfkopf gemäß Fig. 4 in Draufsicht,
Fig. 6
eine vierte Ausführungsform des Zupfkopfes im Längsschnitt.
Show it:
Fig. 1
the view of an epilator with a partially cut plucking head and schematically illustrated components in the device housing,
Fig. 2
a first embodiment of the plucking head in longitudinal section,
Fig. 3
a second embodiment of the plucking head in longitudinal section,
Fig.
4 shows a third embodiment of the plucking head in longitudinal section,
Fig. 5
4 in top view,
Fig. 6
a fourth embodiment of the plucking head in longitudinal section.

Das in Fig. 1 dargestellte Epiliergerät besteht im wesentlichen aus einem Gehäuse 1, in dem ein schematisch dargestellter Motor 2 untergebracht ist, der sowohl ein von Primär- oder Sekundärzellen oder direkt vom Netz gespeister Elektromotor als auch ein Federwerksmotor sein kann.The epilator shown in Fig. 1 consists essentially of a housing 1, in which a schematically illustrated motor 2 is housed, which can be both an electric motor fed by primary or secondary cells or directly from the network and a spring mechanism motor.

Das Gehäuse 1 umschließt ferner teilweise einen Hohlzylinder 3, der Teil des Zupfkopfes ist und im Inneren des Gehäuses 1 fakultativ fest angebracht oder drehbar gelagert sein kann, wie in der nachveröffentlichten Patentanmeldung DE 39 22 949 beschrieben.The housing 1 also partially encloses a hollow cylinder 3, which is part of the plucking head and can optionally be fixedly attached or rotatably mounted in the interior of the housing 1, as described in the subsequently published patent application DE 39 22 949.

Im Gehäuse 1 ist koaxial zur geometrischen Achse A des Hohlzylinders 3 eine Welle 4 drehbar gelagert, die über ein schematisch dargestelltes Getriebe 5 vom Motor 2 angetrieben wird; über dieses Getriebe 5 kann auch der Hohlzylinder 3 wahlweise angetrieben werden. Bei Anordnung einer feststehenden Achse anstelle der Welle 4 entfällt die Verbindung mit dem Getriebe 5.In the housing 1, a shaft 4 is rotatably mounted coaxially to the geometric axis A of the hollow cylinder 3 and is driven by the motor 2 via a schematically illustrated gear 5; The hollow cylinder 3 can also be driven optionally via this gear 5. If a fixed axis is arranged instead of the shaft 4, there is no connection with the gear 5.

Im Inneren des Hohlzylinders 3 sind ferner auf festen Achsen 6 diametral gegenüberliegende Klemmbacken 7 schwenkbar gelagert, die unter der Wirkung einer Feder 8 an der Innenfläche 9 des Hohlzylinders 3 anliegen und andererseits über Hebelarme 10 mit einem auf der Welle (oder Achse) 4 angebrachten Steuerelement 11, das als Nocken 12 ausgebildet sein kann, zusammenwirkt.Inside the hollow cylinder 3, diametrically opposed clamping jaws 7 are also pivotally mounted on fixed axes 6, which under the action of a spring 8 on the inner surface 9 of the Apply hollow cylinder 3 and on the other hand via lever arms 10 cooperates with a control element 11, which can be designed as a cam 12, which is attached to the shaft (or axis) 4.

Zur Vereinfachung ist in Fig. 1 nur eine Hälfte des sich diametral in spiegelbildlicher Anordnung gegenüberliegenden Klemmbacken-Feder-Systems dargestellt.For simplification, only one half of the jaw-spring system diametrically opposite in a mirror-image arrangement is shown in FIG. 1.

Der äußere Rand 13 des Hohlzylinders 3, mit dem das Epiliergerät auf die Haut aufgesetzt wird, bildet die Stirnseite des Zupfkopfes und definiert somit seine Arbeitsfläche B.The outer edge 13 of the hollow cylinder 3, with which the epilator is placed on the skin, forms the end face of the plucking head and thus defines its working surface B.

Die verschiedenen Möglichkeiten der Fixierung oder des Antriebes des Hohlzylinders 3 und der Welle 4 des Steuerelementes 11 sind aus der eingangs genannten nachveröffentlichten Patentanmeldung DE 39 22 949 beschrieben und werden daher im folgenden nicht mehr näher erläutert.The various possibilities of fixing or driving the hollow cylinder 3 and the shaft 4 of the control element 11 are described in the above-mentioned post-published patent application DE 39 22 949 and are therefore not explained in more detail below.

Bei dem in Fig. 2 dargestellten Zupfkopf ist der Hohlzylinder 3 an seinem Boden mit einem Querschott 14 versehen, durch das die Welle (oder Achse) 4 des Steuerelementes 11, das hier als Nocken 12 ausgebildet ist, durchgeführt ist. Oberhalb des Nockens 12 - in Richtung der Stirnseite des Hohlzylinders 3 gesehen - sind im Hohlzylinder im rechten Winkel zur Zylinderachse A zwei Achsen 6 spiegelbildlich zur Zylinderachse A angebracht, auf denen zwei diametral gegenüberliegende Klemmbacken 7 schwenkbar gelagert sind. In Richtung des Gehäuseinneren sind die Klemmbacken 7 mit Hebelarmen 10 versehen, die mit ihren freien Enden 15 mit dem Nocken 12 zusammenwirken. Zwischen beiden Klemmbacken 7 ist eine Druckfeder 8 in Form einer Druckschenkel-Biegefeder gespannt, die die Klemmbacken 7 im oberen Bereich des Hohlzylinders 3 gegen dessen Innenfläche 9 in die Schließstellung drückt.In the plucking head shown in FIG. 2, the hollow cylinder 3 is provided on its bottom with a transverse bulkhead 14 through which the shaft (or axis) 4 of the control element 11, which is designed here as a cam 12, is passed. Above the cam 12 - viewed in the direction of the end face of the hollow cylinder 3 - two axes 6 are mounted in the hollow cylinder at right angles to the cylinder axis A in mirror image to the cylinder axis A, on which two diametrically opposed clamping jaws 7 are pivotally mounted. In the direction of the interior of the housing, the jaws 7 are provided with lever arms 10 which cooperate with the free ends 15 with the cam 12. Between the two jaws 7, a compression spring 8 in the form of a compression leg spiral spring is tensioned, which presses the jaws 7 in the upper region of the hollow cylinder 3 against its inner surface 9 into the closed position.

Während eines Arbeitsumlaufes werden die Klemmbacken 7 durch den umlaufenden oder feststehenden Nocken 12 über die Hebelarme 10 in die Offenstellung gedrängt und bei Freigabe durch den Nocken 12 durch die Feder 8 wieder in die Schließstellung zurückgeschwenkt. Durch ein geeignetes Hebelverhältnis der Klemmbacken 7, gebildet durch den Abstand von der Schwenkachse 6 zum Kraftangriffspunkt am Nocken 12 auf der einen Seite und zur Klemmfläche im oberen Bereich 16 des Hohlzylinders 3 auf der anderen Seite, läßt sich ein günstiger mechanischer Gesamtaufbau verwirklichen. Dadurch, daß die Klemmbacken 7 durch den Nocken 12 geöffnet werden, das Schließen aber durch Federkraft erfolgt, kann die Schließbewegung durch ein geeignetes Profil des Nocken 12 extrem schnell ablaufen. Das ermöglicht entsprechend längere Zeiten für das Einfädeln und Zupfen der Haare während eines Arbeitsumlaufes, und die federbetätigten Klemmbacken 7 erfahren eine hohe Anfangsschließkraft, wodurch erfaßte Haare sicher festgehalten werden.During a work cycle, the clamping jaws 7 are pushed into the open position by the rotating or fixed cam 12 via the lever arms 10 and, when released by the cam 12, are pivoted back into the closed position by the spring 8. By means of a suitable lever ratio of the clamping jaws 7, formed by the distance from the pivot axis 6 to the force application point on the cam 12 on one side and to the clamping surface in the upper region 16 of the hollow cylinder 3 on the other side, a favorable overall mechanical construction can be realized. Characterized in that the jaws 7 are opened by the cam 12, but the closing takes place by spring force, the closing movement can take place extremely quickly through a suitable profile of the cam 12. This enables correspondingly longer times for threading and plucking the hair during a work cycle, and the spring-actuated clamping jaws 7 experience a high initial closing force, as a result of which captured hair is held securely.

Bei den nachstehend beschriebenen Varianten des Zupfkopfes haben der Hohlzylinder 3 und die Welle oder Achse 4 die gleiche Gestalt und sind in gleicher Weise beziffert. Die in Fig. 3 dargestellte Variante des Zupfkopfes hat einen Hohlzylinder mit zwei Achsen 6, die in gleicher Weise wie in Fig. 2 angeordnet sind und auf denen Klemmbacken 20 schwenkbar gelagert sind, die im oberen Bereich 16 des Hohlzylinders 3 dessen Innenfläche 9 berühren. Die durch das Querschott 14 des Hohlzylinders 3 geführte Welle (oder Achse) 4 trägt an ihrem freien Ende das Steuerelement 11, das hier als Kurvenscheibe 21 ausgebildet ist. In die Klemmbacken 20 sind Blattfedern 22 fest eingebettet, deren freie Enden mit kugelförmigen Gleitkörpern 23 in die Steuernut 24 der Kurvenscheibe 21 eingreifen.In the variants of the plucking head described below, the hollow cylinder 3 and the shaft or axis 4 have the same shape and are numbered in the same way. The variant of the plucking head shown in FIG. 3 has a hollow cylinder with two axes 6, which are arranged in the same way as in FIG. 2 and on which clamping jaws 20 are pivotably mounted, which in the upper region 16 of the hollow cylinder 3 touch the inner surface 9 thereof. The shaft (or axis) 4 guided through the transverse bulkhead 14 of the hollow cylinder 3 carries at its free end the control element 11, which is designed here as a cam disk 21. Leaf springs 22 are firmly embedded in the clamping jaws 20, the free ends of which engage with spherical sliding bodies 23 in the control groove 24 of the cam disk 21.

Die Blattfeder 22 vereinigt somit die beiden Funktionen: Federwirkung und Bewegungsübertragung von dem Steuerelement 11 auf die Klemmbacken 20 in einem einzigen Bauteil, die im Ausführungsbeispiel (Fig. 2) auf zwei Bauteile verteilt waren. In einem Arbeitsumlauf werden die Klemmbacken 20 während der Rotation des Gesamtsystems durch die ruhende oder mit geeigneter Drehzahl umlaufende Kurvenscheibe 21 über die Biegefeder 22 geschwenkt. Im Anschluß an die Schließung des Zupfspaltes zwischen den Klemmbacken 20 und dem zugeordneten Bereich 16 der Innenfläche 9 des Hohlzylinders 3 wird durch Überdrücken der Blattfedern 22 die Klemmkraft zum Festhalten der Haare aufgebaut und über den erforderlichen Drehwinkel aufrechterhalten.The leaf spring 22 thus combines the two functions: spring action and movement transmission from the control element 11 to the Clamping jaws 20 in a single component, which in the exemplary embodiment (FIG. 2) were distributed over two components. In one working cycle, the clamping jaws 20 are pivoted over the spiral spring 22 during the rotation of the overall system by the cam disc 21 which is at rest or rotating at a suitable speed. Following the closure of the plucking gap between the clamping jaws 20 and the associated area 16 of the inner surface 9 of the hollow cylinder 3, the clamping force for holding the hair is built up by overpressing the leaf springs 22 and maintained over the required angle of rotation.

Bei dem Zupfkopf gemäß Fig. 4 und 5 sind innerhalb des Hohlzylinders 3 zwei parallel zur geometrischen Zylinderachse A gerichtete Achsen 25 angebracht, auf denen die Klemmbacken 26 schwenkbar gelagert sind, so daß die Schwenkbewegung parallel zur Arbeitsfläche B des Zupfkopfes erfolgt. In Fig. 4 ist nur eine Achse 25 zu sehen. Zwischen beiden Klemmbacken 26 ist eine Schraubenfeder 27 gespannt, die beide Klemmbacken in die Schließstellung mit der Innenfläche 9 des Hohlzylinders 3 drängen. Die Klemmbacken 26 sind mit Hebelarmen 28 versehen, die mit dem auf der Welle (oder Achse) 4 angebrachten Steuerelement 11 zusammenwirken, das hier topfförmig ausgebildet ist, mit einer als Steuerkurve dienenden Innenfläche 29, gegen die die Hebelarme 28 mindestens während der Schwenkbewegung der Klemmbacken 26 anliegen.In the plucking head according to FIGS. 4 and 5, two axes 25 directed parallel to the geometric cylinder axis A are mounted within the hollow cylinder 3, on which the clamping jaws 26 are pivotably mounted, so that the pivoting movement takes place parallel to the working surface B of the plucking head. Only one axis 25 can be seen in FIG. 4. Between the two jaws 26, a coil spring 27 is tensioned, which urge both jaws into the closed position with the inner surface 9 of the hollow cylinder 3. The clamping jaws 26 are provided with lever arms 28 which cooperate with the control element 11 attached to the shaft (or axis) 4, which here is cup-shaped, with an inner surface 29 serving as a control curve, against which the lever arms 28 act at least during the pivoting movement of the clamping jaws 26 concerns.

Bei dieser Anordnung der Klemmbacken 26 ergibt sich in der vorgesehenen Größenordnung der Backenöffnung ein nahezu gleichmäßiger Öffnungsspalt zwischen den Klemmbacken 26 und der Innenfläche 9 des Hohlzylinders 3. Bedarfsweise läßt sich aber durch Verlagerung der Schwenkachsen 25 von der in Fig. 5 dargestellten Position unter Beibehaltung der konstruktiven Abmessungen der Klemmbacken 26 ein keilförmig erweiterter Öffnungsspalt erreichen, damit die auszuzupfenden Haare leichter eingefädelt werden können.With this arrangement of the jaws 26, there is an almost uniform opening gap between the jaws 26 and the inner surface 9 of the hollow cylinder 3 in the intended size of the jaw opening. If necessary, however, the pivot axes 25 can be moved from the position shown in FIG. 5 while maintaining the constructive dimensions of the jaws 26 reach a wedge-shaped opening gap so that the hair to be plucked can be threaded more easily.

Das in Fig. 6 dargestellte Ausführungsbeispiel des Zupfkopfes hat ebenfalls ein Querschott 14, durch das die Welle (oder Achse) 4 hindurchgeführt ist, und zwei Achsen 6, die im oberen Teil des Hohlzylinders 3 rechtwinklig zur geometrischen Achse A des Hohlzylinders 3 angebracht sind. Auf diesen Achsen sind sowohl Klemmbacken 30 gelagert als auch von diesen zunächst unabhängige, gesondert ausgebildete Hebelarme 31, die somit gegeneinander drehbeweglich sind. Die Hebelarme 31 haben an ihrem freien Ende je einen angeformten, kugelförmigen Gleitstein 32, der in die Steuernut 33 einer auf der Welle (oder Achse) 4 befestigten Kurvenscheibe 34 eingreift, die hier das Steuerelement 11 darstellt.The embodiment of the plucking head shown in FIG. 6 also has a transverse bulkhead 14 through which the shaft (or axis) 4 is guided, and two axes 6 which are attached in the upper part of the hollow cylinder 3 at right angles to the geometric axis A of the hollow cylinder 3. Clamping jaws 30 are mounted on these axles as well as lever arms 31, which are initially independent of them and are designed separately and are thus rotatable relative to one another. The lever arms 31 each have a molded, spherical sliding block 32 at their free end, which engages in the control groove 33 of a cam disk 34 fastened on the shaft (or axis) 4, which here represents the control element 11.

Die Klemmbacken 30 übergreifen mit je einem haubenartigen Ansatz 35 die Hebelarme 31 teilweise. Zwischen beiden Bauteilen ist eine Feder 36 in Form einer die zugeordnete Achse 6 umgreifende Biegeschenkel-Druckfeder gespannt, die die Klemmbacken 30 und die zugehörigen Hebelarme 31 auseinanderschwenken, bis die Hebelarme 31 zur Anlage an die die Anschläge 37 bildenden Aussparungen im haubenförmigen Ansatz 35 gelangen.The jaws 30 partially overlap the lever arms 31 with a hood-like extension 35. A spring 36 in the form of a flexible leg compression spring encompassing the associated axis 6 is tensioned between the two components and swings the clamping jaws 30 and the associated lever arms 31 apart until the lever arms 31 come to rest against the recesses in the hood-shaped extension 35 forming the stops 37.

In dieser Anschlagposition, die in Fig. 6 abgebildet und in der der Zupfspalt zwischen Klemmbacken 30 und der Innenfläche 9 des Hohlzylinders 3 geschlossen ist, stellt das System: Klemmbacken 30, Feder 36 und Hebelarm 31 eine geschlossene Funktionseinheit dar, die durch die Steuernut 33 der Kurvenscheibe 34 wie folgt betätigt wird:In this stop position, which is shown in FIG. 6 and in which the plucking gap between the clamping jaws 30 and the inner surface 9 of the hollow cylinder 3 is closed, the system: clamping jaws 30, spring 36 and lever arm 31 represents a closed functional unit which is controlled by the control groove 33 the cam disc 34 is operated as follows:

Synchron mit der Relativbewegung der Kurvenscheibe 34 und des Hebelarmes 31 öffnet sich der Zupfspalt aus der in der Zeichnung dargestellten Schließstellung bis zur Maximalöffnung, die über einen durch das Profil der Steuernut 33 bestimmten Drehwinkel konstant gehalten wird, anschließend erfolgt die Schließbewegung über den Hebelarm 31 bis die Klemmbacken 30 wieder die gezeichnete Schließposition erreicht haben. Während der weiterlaufenden Schließbewegung verläßt nun der Hebelarm 31 den Anschlag 37 in Richtung der geometrischen Achse A des Hohlzylinders 3, wobei die Klemmbacken 30 über den gesamten Schließwinkelbereich die volle Schließkraft am Zupfspalt aufrechterhalten. Im weiteren Arbeitsablauf wird der Hebelarm 31 durch das Steuerelement 11 wieder bis zum Anschlag 37 zurückgeführt, womit ein neuer Arbeitszyklus beginnt.Synchronously with the relative movement of the cam 34 and the lever arm 31, the plucking gap opens from the closed position shown in the drawing to the maximum opening, which is kept constant via an angle of rotation determined by the profile of the control groove 33, and then the closing movement takes place via the lever arm 31 to the jaws 30 again have reached the drawn closed position. During the ongoing closing movement, the lever arm 31 now leaves the stop 37 in the direction of the geometric axis A of the hollow cylinder 3, the clamping jaws 30 maintaining the full closing force at the plucking gap over the entire closing angle range. In the further workflow, the lever arm 31 is returned by the control element 11 up to the stop 37, with which a new work cycle begins.

Claims (7)

  1. An epilation head for motor-powered epilating appliances, comprising a hollow cylinder (3) which is at least in part enclosed by the appliance casing (1) and whose working surface (B) to be placed in contact with the skin is defined by its end surface, with a gripping device mounted in said hollow cylinder (3) and comprised of at least two diametrically opposed spring-loaded (8) gripping members (7) adapted to be urged into gripping engagement with the inner surface (9) of said hollow cylinder (3) and being operatively associated with a control element (11) disposed equiaxially with the cylinder axis (A), and with a transmission link (5) between the drive motor (2) and said hollow cylinder (3) and said control element (11), or a transmission link (5) between said drive motor (2) and said hollow cylinder (3), or a transmission link (5) between said drive motor (2) and said control element (11), characterized in that said spring-loaded gripping members (7, 20, 26, 30) are pivotally mounted on axles (6, 25) disposed in the interior of said hollow cylinder (3) and are in driving relationship to said control element (11) by means of a lever arrangement (10, 22, 28, 31).
  2. The epilation head as claimed in claim 1, characterized in that said axles (6) of said gripping members (7, 20, 30) are disposed at right angles to said geometrical axis (A) of said cylinder.
  3. The epilation head as claimed in claim 1, characterized in that said axles (25) of said gripping members (26) are disposed parallel to said geometrical axis (A) of said cylinder.
  4. The epilation head as claimed in claims 1 and 2, characterized in that two opposed gripping members (7, 26) are associated with a common compression spring (8, 27), and that each of said gripping members (7, 26) includes a lever arm (15, 28) extending parallel to said cylinder axis (A) and cooperating with said control element (11).
  5. The epilation head as claimed in claims 1 and 2, characterized in that each gripping member (20) is provided with a leaf spring (22) extending substantially parallel to said cylinder axis (A) and serving as a lever arm having its free end (sliding means 23) cooperating with said control element (11).
  6. The epilation head as claimed in claims 1 and 2, characterized in that each gripping member (30) and its associated lever arm (31) are configured as separate components pivotally mounted on a common axle (6) and relatively movable within limits, with a spreader spring (36) being seated therebetween.
  7. The epilation head as claimed in one or several of the preceding claims, characterized in that said control element (11) is configured as a cam disk (21, 29, 34) for positive engagement with the free ends of said lever arms (22, 28, 31).
EP91911240A 1990-07-21 1991-06-22 Hair-plucking head for a motor-driven depiliatory machine Expired - Lifetime EP0493544B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4023252A DE4023252A1 (en) 1990-07-21 1990-07-21 PLUG HEAD FOR MOTORIZED EPILIER DEVICES
DE4023252 1990-07-21
PCT/DE1991/000512 WO1992001405A1 (en) 1990-07-21 1991-06-22 Hair-plucking head for a motor-driven depiliatory machine

Publications (2)

Publication Number Publication Date
EP0493544A1 EP0493544A1 (en) 1992-07-08
EP0493544B1 true EP0493544B1 (en) 1996-05-29

Family

ID=6410768

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91911240A Expired - Lifetime EP0493544B1 (en) 1990-07-21 1991-06-22 Hair-plucking head for a motor-driven depiliatory machine

Country Status (7)

Country Link
US (1) US5254124A (en)
EP (1) EP0493544B1 (en)
JP (1) JPH05501218A (en)
AT (1) ATE138540T1 (en)
DE (2) DE4023252A1 (en)
ES (1) ES2087296T3 (en)
WO (1) WO1992001405A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120014C1 (en) * 1991-06-18 1992-06-17 Braun Ag, 6000 Frankfurt, De
US5217469A (en) * 1992-01-27 1993-06-08 Moshe Dolev Rotary head spring-loaded tweezer hair removal device
WO1995020340A1 (en) * 1994-01-27 1995-08-03 Payer Elektroprodukte Gesellschaft M.B.H. Depilator
US5619245A (en) * 1994-07-29 1997-04-08 Eastman Kodak Company Multi-beam optical system using lenslet arrays in laser multi-beam printers and recorders
DE59609351D1 (en) * 1996-08-06 2002-07-18 Braun Gmbh TURNING CYLINDER FOR AN EPILATION DEVICE
FR2810216B1 (en) 2000-06-15 2002-08-16 Seb Sa DEPILATURE APPARATUS WITH CLAMPS CARRIED BY A CHAIN
FR2810215B1 (en) 2000-06-15 2002-08-30 Seb Sa HAIR REMOVAL APPARATUS

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2556939B1 (en) * 1983-12-22 1987-10-23 Jean Alazet HAIR REMOVAL DEVICE
FR2589338B2 (en) * 1985-11-05 1991-11-08 Alazet Jean HAIR REMOVAL APPARATUS
DE8633290U1 (en) * 1986-12-12 1987-02-26 Piwonka, Klaus, 3527 Calden Device for cutting body hair
NL8900576A (en) * 1989-03-09 1990-10-01 Philips Nv EPILER.
US5084046A (en) * 1989-04-28 1992-01-28 Rony Mann Depilator
NL8901753A (en) * 1989-07-10 1991-02-01 Philips Nv EPILER.
DE3922949C1 (en) * 1989-07-12 1990-09-27 Braun Ag, 6000 Frankfurt, De
IL93266A0 (en) * 1989-09-14 1990-11-29 Crestmoore Ltd Depilatory device
FR2658399B1 (en) * 1990-02-19 1992-06-19 Havard Paul HAIR REMOVAL DEVICE.

Also Published As

Publication number Publication date
ATE138540T1 (en) 1996-06-15
JPH05501218A (en) 1993-03-11
DE4023252C2 (en) 1993-06-24
ES2087296T3 (en) 1996-07-16
EP0493544A1 (en) 1992-07-08
DE59107863D1 (en) 1996-07-04
DE4023252A1 (en) 1992-01-23
US5254124A (en) 1993-10-19
WO1992001405A1 (en) 1992-02-06

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