EP0589907A1 - Hair-plucking head for depilation instrument. - Google Patents

Hair-plucking head for depilation instrument.

Info

Publication number
EP0589907A1
EP0589907A1 EP92910145A EP92910145A EP0589907A1 EP 0589907 A1 EP0589907 A1 EP 0589907A1 EP 92910145 A EP92910145 A EP 92910145A EP 92910145 A EP92910145 A EP 92910145A EP 0589907 A1 EP0589907 A1 EP 0589907A1
Authority
EP
European Patent Office
Prior art keywords
plucking
cam
tube
pawls
ratchet wheel
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.)
Granted
Application number
EP92910145A
Other languages
German (de)
French (fr)
Other versions
EP0589907B1 (en
Inventor
Hans-Eberhard Heintke
Gebhard Braun
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
Publication of EP0589907A1 publication Critical patent/EP0589907A1/en
Application granted granted Critical
Publication of EP0589907B1 publication Critical patent/EP0589907B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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 epilators with a rotatably mounted in the device housing, partially enclosed by it, provided with clamping jaws, motor-driven plucking tube and a coaxially aligned, rotatably arranged, operably connected to the clamping jaws Cam.
  • the object of the invention is to design the plucking head for an epilator of the type mentioned at the outset in such a way that the energy expenditure for generating the clamping force is reduced.
  • the solution according to the invention eliminates the special gear arrangement for driving the camshaft, which in the case of the Epilator according to the cited prior art is provided in addition to the gear for driving the plucking tube.
  • the energy requirement which plays an important role in particular in the case of small battery-operated electrical devices, is substantially reduced by the fact that the clamping force does not have to be applied by the drive during the entire rotation period but only by the drive in the stepping phase.
  • the technically relatively complex, flying storage of the camshaft with all its other disadvantages in terms of construction costs and the space required in the housing of the epil er convinceds.
  • Step switch mechanisms can be designed in different ways.
  • the indexing mechanism is designed as a ratchet indexing mechanism, consisting of a ratchet wheel and at least two pawls which cooperate with it and are pivotally mounted and spring-loaded into engagement with the ratchet wheel.
  • a significant advantage of this measure according to the invention is that by means of such a pawl step-by-step mechanism, the cam is adjusted in the load-free state of the cam, as a result of which less drive energy is required or consumed to operate the plucking head and the wear interacting parts is significantly reduced.
  • such a switchgear mechanism requires little construction, requires little space and can therefore easily be accommodated in the drive path from the motor to the cam.
  • a preferred embodiment of the invention provides that the plucking head has a system axis fixed coaxially to its geometric axis in the device housing, on which the cam is rotatably mounted and the ratchet wheel is fastened adjacent thereto, and that the pawls can be pivoted on the foot part of the cam body are stored.
  • This staggered arrangement of the cam and ratchet wheel on the system axis advantageously contributes to further reducing the dimensions of the plucking head.
  • an inner curve is provided and the pawls are each provided with a back profile which projects into the path of the inner curve rotating with the plucking tube.
  • the pawls are lifted out of engagement with the ratchet wheel with each revolution of the plucking tube and are adjusted by entraining together with the cam by an angle of rotation determined by the division of the ratchet wheel.
  • This measure also contributes significantly to reducing the manufacturing costs as an advantage of the invention, and also offers the possibility of in-house production of all parts with the usual manufacturing and assembly work in large series at low overall costs, which ensures high functional reliability, reliability and predictability of the manual adjustment achieves this with a minimal additional energy requirement for driving the plucking head.
  • Figure 1 is an elevation view of an epilator
  • FIG. 2 shows a central longitudinal section through the plucking head with the units essential for the function of the epilator
  • Figure 3 is a view along the section line III-III in Figure 1 in a simplified representation.
  • Figure 4 is a view along the section line IV-IV in Fig. 1 in a fragmentary, simplified representation and Figure 5 is a diagram.
  • the epilator shown in FIG. 1 essentially consists of a housing 1 designed as a handle for guiding the device, from whose upper ends the crown 2 of the plucking head 3 protrudes, which is thus partially enclosed by the housing 1.
  • a motor 4 is also accommodated in the manner described below (FIG. 2), which can be a spring mechanism or an electric motor fed by primary secondary cells or directly from the mains, as by the opposite end of the housing 1 lead out 5 is indicated.
  • a switch 6 is used to switch the epilator on and off.
  • a mounting plate 7 is fastened in the housing 1, which on the one hand supports the motor 4 and on the other hand is provided with an angular arm 8 on which a system axis 11 is fastened in the extension of the motor shaft 9 and the geometrical axis 10 of the plucking head 3.
  • a plucking tube 15 is rotatably mounted on the system axis 11 as part of the plucking head 3 by means of a bearing bush 16; the plucking tube 15 can be made in one piece, or, as can be seen in FIG. 2, can be composed of three parts for easier manufacture and assembly, namely a partially bell-shaped lower part 17, a cylindrical middle part 18 and an upper part 1 in the form of the aforementioned crown 2, which can be designed differently for different applications and is therefore expediently attachable and replaceable.
  • the lower part 17 of the plucking tube 15 is provided with a bearing bush 16 and bears on the inner surface of the bell-shaped area. ches 19 an internal toothing 20, in which the meshing with the motor pinion 12 engages gear 13, whereby the drive connection between the motor shaft 9 and the plucking tube 15 is closed.
  • ratchet wheel 26 On the system axis 11, a specially toothed wheel, hereinafter referred to as ratchet wheel 26, is rigidly attached by pressing. Above (FIG. 2) this ratchet wheel 26, a cam 27 as a further part of the plucking head 3 is rotatably mounted on the system axis 11 and secured against axial displacement by means of a clamping sleeve 28. Beyond their pivot axes 21 and 22, the clamping jaws are provided with downward (FIG. 2) lever arms 29 and 30, which act on the cam under the action of the spring 25 via balls 31 and 32 which are pressed into the lever arms and serve to reduce friction 27 are partially present (Fig. 4).
  • two diametrically opposite axes 34 and 35 are inserted on both sides and parallel to the system axis 11, on which - as can be seen in FIG. 3 - two pawls 36 and 37 are pivotably mounted, which have the shape of a two-armed lever.
  • a respective tooth 40 and '41 is provided which cooperates with the teeth 42 of the ratchet wheel 26th
  • a spreading spring 43 common to both pawls 36 and 37 engages with its free ends 44 and 45 on the other lever arms 46 and 47 of the pawls 36 and 37 and urges them into the engagement position with the toothing 42 of the ratchet wheel 26.
  • Inner surface 48 of the cylindrical central part 18 of the plucking tube 15 is provided with an inner curve 49, which is matched with, ie in their web 53 protruding back profiles 50 and 51 on the lever arms 46 and 47 of the pawls 36 and 37 cooperate, in the sense of lifting the pawls 36 and 37 from the teeth 42 of the ratchet wheel 26 against the action of the spread ⁇ spring 43.
  • the ratchet wheel 26 and the two pivotable pawls 36 and 37 together form a ratchet step mechanism which, controlled by the inner curve 49, translates the continuously rotating rotary movements of the plucking tube 15 of the plucking head 3 into an intermittent rotational movement of the cam 27, specifically in the manner described below (cf. FIGS. 3 to 5, the latter with an associated explanation): the plucking tube 15 rotates driven by the motor 4 via the pinion 12 and the toothed wheel 13, in the direction of arrow A.
  • the upper pawl 36 is engaged with its tooth 40 in the toothing 42 of the ratchet wheel 26 and blocks a movement of the cam 27 in both directions of rotation.
  • the pawls 36 and 37 shown in FIG. 3 Due to the constructive design and arrangement of the pawls 36 and 37 shown in FIG. 3, they act self-locking in both directions of rotation. The holding function therefore requires minimal force from the spreading spring 43 and practically no friction due to the self-locking between the pawls and the ratchet wheel.
  • the lower pawl 37 rests with its tooth 41 on the head 52 of the respectively assigned tooth of the ratchet toothing 42 and is thus in the pre-locking position.
  • the cam 27 has the position shown in FIG. 4 and the balls 30, 31 of the clamping jaws 23, 24 lie against the outer radius R, so that the clamping jaws 23, 24 are forced into the open position.
  • Jaws 23, 24 Full jaw opening is reached 06 ° as above at 10 °. The same play begins on the cam 27 offset by 180 ° (the cam 27 itself was rotated by approximately 16 °) 46 ° as above at 50 °. 56 ⁇ as above at 60 ° the transition curve at the cam changes to the inner radius R.
  • excavation movement for the lower pawl 37 now begins 86 ° lower pawl 37: excavation movement ends 06 ° range for engaging the upper pawl 36 36 ° (see range 110 - 140 °) 32 ° as above at 136 ° 42 ° as above at 146 ° 47 ° lower pawl 37 changes from fully raised position to 57 ° pre-locking position (see range 151 - 161 °) 82 ° as above at 186 ° 92 ° new starting position for the next round of the cam-pawl system.
  • the comfort compared to the starting position is 0 ° in the direction of rotation by a pawl pitch, ie offset by 32 °. After 11 rotations, all elements are again in the same assignment and starting position "0 °", as shown in FIG. 3.
  • the drawing Fig. 3 is based, for example, a ratchet wheel division of 11 divisions. However, a different division can also be selected.
  • the adjustment of the cam-pawl system during the mutual latching process of the pawls is in each case half a division step, i.e. 32.73 °.
  • the plucking system moves by this angle from one plucking process to the next.

Landscapes

  • Transmission Devices (AREA)
  • Hydraulic Motors (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Paper (AREA)
  • Liquid Crystal Substances (AREA)
  • Harvesting Machines For Specific Crops (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

Tête d'arrachement pour appareils d'épilation comportant un tube de pincement (15), monté tournant dans le boîtier de l'appareil (4), partiellement entouré par celui-ci, équipé de mâchoires de serrage (23, 24) et entraîné par un moteur, et une came (27) tournante disposée dans le tube, dans le même axe que celui-ci, et agissant en même temps que les mâchoires de serrage (23, 24), ainsi qu'un mécanisme pas à pas (26, 36, 37) se déplaçant d'une part avec le tube de pincement (15) et d'autre part avec la came (27).Tear-off head for epilating devices comprising a pinch tube (15), rotatably mounted in the device housing (4), partially surrounded by it, equipped with clamping jaws (23, 24) and driven by a motor, and a rotating cam (27) disposed in the tube, in the same axis as the latter, and acting at the same time as the clamping jaws (23, 24), as well as a stepping mechanism ( 26, 36, 37) moving on the one hand with the clamping tube (15) and on the other hand with the cam (27).

Description

Zupfköpf für Epi1iergerätePlucking head for epilation devices
Die Erfindung bezieht sich auf einen Zupfköpf für Epiliergeräte mit einem im Gerätegehäuse drehbar gelagerten, von diesem teil¬ weise umschlossenen, mit Klemmbacken versehenen, motorisch ange¬ triebenen Zupfrohr und einem zu diesem koaxial ausgerichteten, drehbar angeordneten, mit den Klemmbacken in Wirkverbindung ste¬ henden Nocken.The invention relates to a plucking head for epilators with a rotatably mounted in the device housing, partially enclosed by it, provided with clamping jaws, motor-driven plucking tube and a coaxially aligned, rotatably arranged, operably connected to the clamping jaws Cam.
Bei einem bekannten Epiliergerät dieser Art (DE 39 22 949 Cl) ist der Nocken auf dem freien Ende einer Welle befestigt, die im Ge¬ rätegehäuse fliegend gelagert ist und über ein separates Getriebe vom Motor in Umdrehung versetzt wird, wobei das Übersetzungsver¬ hältnis so gewählt ist, daß die Welle und damit der Nocken im gleichen Drehsinn aber mit geringerer Drehzahl umläuft als das über ein weiteres Getriebe in Rotation versetzte Zupfröhr mit seinen Klemmbacken. Damit wird im wesentlichen erreicht, daß sich der Ort der Zupfungen auf der Haut ständig verlagert. Aufgrund der ständigen Einwirkung des drehbar angetriebenen Nockens auf die federnd gelagerten Klemmbacken wird ein erheblicher Teil der Antriebsenergie für die Erzeugung der Klemmkraft verbraucht.In a known epilator of this type (DE 39 22 949 Cl), the cam is fastened to the free end of a shaft which is overhung in the device housing and is rotated by the motor via a separate gear, the translation ratio thus is chosen that the shaft and thus the cam rotates in the same direction of rotation but at a lower speed than the plucking tube set in rotation by means of another gear with its clamping jaws. This essentially means that the location of the plucking on the skin is constantly shifting. Due to the constant action of the rotatably driven cam on the spring-loaded clamping jaws, a considerable part of the drive energy is used to generate the clamping force.
Aufgabe der Erfindung ist es, den Zupfköpf für ein Epiliergerät der eingangs genannten Art so auszubilden, daß der Energieaufwand für die Erzeugung der Klemmkraft verringert wird.The object of the invention is to design the plucking head for an epilator of the type mentioned at the outset in such a way that the energy expenditure for generating the clamping force is reduced.
Diese Aufgabe wird nach der Erfindung bei einem Epiliergerät der eingangs genannten Art gelöst durch ein einerseits mit dem Zupf¬ rohr und andererseits mit dem Nocken in Bewegungsverbindung ste¬ hendes selbsthemmendes Schrittschaltwerk.This object is achieved according to the invention in an epilator of the type mentioned at the beginning by means of a self-locking step-by-step mechanism which is in movement connection on the one hand with the plucking tube and on the other hand with the cam.
Durch die Lösung nach der Erfindung entfällt die spezielle Ge¬ triebeanordnung für den Antrieb der Nockenwelle, welche bei dem Epiliergerät nach dem zitierten Stand der Technik zusätzlich zum Getriebe für den Antrieb des Zupfrohres vorgesehen ist. Der Ener¬ giebedarf, der insbesondere bei batteriebetriebenen, elektrischen Kleingeräten eine wesentliche Rolle spielt, wird wesentlich da¬ durch reduziert, daß die Klemmkraft nicht während der gesamten Rotationsdauer vom Antrieb sondern nur in der Schrittschaltphase vom Antrieb aufgebracht werden muß. Darüber hinaus entfällt die technisch relativ aufwendige, fliegende Lagerung der Nockenwelle, mit all ihren weiteren Nachteilen hinsichtlich der Baukosten und des Raumbedarfs im Gehäuse des Epil ergerätes.The solution according to the invention eliminates the special gear arrangement for driving the camshaft, which in the case of the Epilator according to the cited prior art is provided in addition to the gear for driving the plucking tube. The energy requirement, which plays an important role in particular in the case of small battery-operated electrical devices, is substantially reduced by the fact that the clamping force does not have to be applied by the drive during the entire rotation period but only by the drive in the stepping phase. In addition, the technically relatively complex, flying storage of the camshaft, with all its other disadvantages in terms of construction costs and the space required in the housing of the epil ergerätes.
Schrittschaltwerke können in verschiedener Weise ausgebildet sein. Nach einer vorteilhaften Ausbildungsform der Erfindung ist das Schrittschaltwerk als Kl nken-Schrittschaltwerk ausgebildet, bestehend aus einem Klinkenrad und mindestens zwei mit diesem zu¬ sammenwirkenden, schwenkbar gelagerten, unter Federwirkung in EingriffStellung mit dem Klinkenrad gedrängten Klinken. Ein we¬ sentlicher Vorteil dieser Maßnahme nach der Erfindung besteht da¬ rin, daß mittels eines derartigen Klinken-Schrittschaltwerkes die Nockenverstellung im lastfreien Zustand des Nockens erfolgt, wo¬ durch weniger Antriebsenerg e zum Betreiben des Zupfköpfes benö¬ tigt bzw. verbraucht sowie der Verschleiß zusammenwirkender Teile erheblich gemindert wird. Darüber hinaus ist ein derartiges Schnttschaltwerk wenig bauaufwendig, hat geringen Raumbedarf und läßt sich daher leicht im Antriebsweg vom Motor zum Nocken unter¬ bringen.Step switch mechanisms can be designed in different ways. According to an advantageous embodiment of the invention, the indexing mechanism is designed as a ratchet indexing mechanism, consisting of a ratchet wheel and at least two pawls which cooperate with it and are pivotally mounted and spring-loaded into engagement with the ratchet wheel. A significant advantage of this measure according to the invention is that by means of such a pawl step-by-step mechanism, the cam is adjusted in the load-free state of the cam, as a result of which less drive energy is required or consumed to operate the plucking head and the wear interacting parts is significantly reduced. In addition, such a switchgear mechanism requires little construction, requires little space and can therefore easily be accommodated in the drive path from the motor to the cam.
Eine bevorzugte Ausbildungsform der Erfindung sieht vor, daß der Zupfköpf eine koaxial zu seiner geometr schen Achse im Gerätege¬ häuse fixierte Systemachse aufweist, auf der der Nocken drehbar gelagert und zu diesem benachbart das Klinkenrad befestigt ist, und daß die Klinken am Fußteil des Nockenkörpers schwenkbar gela¬ gert sind. Diese gestaffelte Anordnung vom Nocken und Klinkenrad auf der Systemachse trägt in vorteilhafter Weise zur weiteren Verringerung der Dimensionen des Zupfkopfes bei. In weiterer Ausgestaltung der Erfindung ist zur Steuerung der in¬ termittierenden Drehbewegung des Nockens auf der Innenfläche des Zupfrohres in Höhe der Klinken eine Innenkurve angebracht und sind die Klinken mit je einem Rückenprofil versehen, das in die Bahn der mit dem Zupfrohr rotierenden Innenkurve hineinragt. Auf diese Weise werden die Klinken bei jeder Umdrehung des Zupfrohres aus dem Eingriff mit dem Klinkenrad ausgehoben und durch Mitnahme zusammen mit dem Nocken um einen durch die Teilung des Klinken¬ rades bestimmten Drehwinkel verstellt. Diese Steuerung ist beson¬ ders einfach und kommt außer der Innenkurve ohne jegliche beson¬ dere Bauteile aus. Auch diese Maßnahme trägt wesentlich zur Senkung der Herstellungskosten als Vorteil der Erfindung bei, ferner die Möglichkeit der Eigenherstellung aller Teile mit dem üblichen Fertigungs- und Montageaufwand in Großserie mit geringen Gesamtkosten bietet, die eine hohe Funktionssicherheit, Zuver¬ lässigkeit und Berechenbarkeit der Zupfortverstellung gewähr¬ leistet und das bei einem minimalen zusätzlichen Energiebedarf für den Antrieb des Zupfköpfes.A preferred embodiment of the invention provides that the plucking head has a system axis fixed coaxially to its geometric axis in the device housing, on which the cam is rotatably mounted and the ratchet wheel is fastened adjacent thereto, and that the pawls can be pivoted on the foot part of the cam body are stored. This staggered arrangement of the cam and ratchet wheel on the system axis advantageously contributes to further reducing the dimensions of the plucking head. In a further embodiment of the invention, in order to control the intermittent rotary movement of the cam on the inner surface of the plucking tube at the level of the pawls, an inner curve is provided and the pawls are each provided with a back profile which projects into the path of the inner curve rotating with the plucking tube. In this way, the pawls are lifted out of engagement with the ratchet wheel with each revolution of the plucking tube and are adjusted by entraining together with the cam by an angle of rotation determined by the division of the ratchet wheel. This control is particularly simple and, apart from the inner curve, does not require any special components. This measure also contributes significantly to reducing the manufacturing costs as an advantage of the invention, and also offers the possibility of in-house production of all parts with the usual manufacturing and assembly work in large series at low overall costs, which ensures high functional reliability, reliability and predictability of the manual adjustment achieves this with a minimal additional energy requirement for driving the plucking head.
In der Zeichnung ist ein Ausführungbeispiel der Erfindung darge¬ stellt, und zwar zeigen:The drawing shows an exemplary embodiment of the invention, namely:
Figur 1 die Ansicht eines Epiliergerätes im Aufriß;Figure 1 is an elevation view of an epilator;
Figur 2 ein Mittellängsschnitt durch den Zupfkopf mit den für die Funktion des Epiliergerätes wesentlichen Aggre¬ gaten;FIG. 2 shows a central longitudinal section through the plucking head with the units essential for the function of the epilator;
Figur 3 eine Ansicht längs der Schnittlinie III-III in Fig. 1 in vereinfachter Darstellung;Figure 3 is a view along the section line III-III in Figure 1 in a simplified representation.
Figur 4 eine Ansicht längs der Schnittlinie IV-IV in Fig. 1 in ausschnittsweiser, vereinfachter Darstellung und Figur 5 ein Diagramm.Figure 4 is a view along the section line IV-IV in Fig. 1 in a fragmentary, simplified representation and Figure 5 is a diagram.
Das in Fig. 1 dargestellte Epiliergerät besteht im wesentlichen aus einem als Handgriff zum Führen des Gerätes ausgebildeten Ge¬ häuse 1, aus dessen oberen Enden die Krone 2 des Zupfköpfes 3 herausragt, der somit vom Gehäuse 1 teilweise umschlossen ist. Im Gehäuse 1 ist ferner ein Motor 4 in nachstehend beschriebener Weise (Fig. 2) untergebracht, der ein Federwerk- oder ein von Primär- Sekundärzellen oder direkt vom Netz gespeister Elektro¬ motor sein kann, wie durch das am entgegengesetzten Ende des Ge¬ häuses 1 herausgeführte Kabel 5 angedeutet ist. Ein Schalter 6 dient zum Ein- und Ausschalten des Epiliergerätes. Im Gehäuse 1 ist eine Montageplatte 7 befestigt, die einerseits den Motor 4 trägt und andererseits mit einem winkelförmigen Arm 8 versehen ist, auf dem in Verlängerung der Motorwelle 9 und der geometri¬ schen Achse 10 des Zupfköpfes 3 eine Systemachse 11 befestigt ist. Auf der Motorwelle 9 ist ein Ritzel 12 angebracht, das mit einem Zahnrad 13 kämmt, welches auf einer im Arm 8 der Montage¬ platte 7 befestigten, zur Systemachse 11 parallelen Achse 14 drehbar gelagert ist.The epilator shown in FIG. 1 essentially consists of a housing 1 designed as a handle for guiding the device, from whose upper ends the crown 2 of the plucking head 3 protrudes, which is thus partially enclosed by the housing 1. In the housing 1, a motor 4 is also accommodated in the manner described below (FIG. 2), which can be a spring mechanism or an electric motor fed by primary secondary cells or directly from the mains, as by the opposite end of the housing 1 lead out 5 is indicated. A switch 6 is used to switch the epilator on and off. A mounting plate 7 is fastened in the housing 1, which on the one hand supports the motor 4 and on the other hand is provided with an angular arm 8 on which a system axis 11 is fastened in the extension of the motor shaft 9 and the geometrical axis 10 of the plucking head 3. On the motor shaft 9 there is a pinion 12 which meshes with a gear 13 which is rotatably mounted on an axis 14 which is fixed in the arm 8 of the mounting plate 7 and is parallel to the system axis 11.
Auf der Systemachse 11 ist ein Zupfröhr 15 als Teil des Zupf¬ kopfes 3 mittels Lagerbuchse 16 drehbar gelagert; das Zupfröhr 15 kann einteilig ausgebildet sein, oder wie in Fig. 2 zu erkennen ist, zur leichteren Herstellung und Montage aus drei Teilen zu¬ sammengesetzt sein, und zwar aus einem teilweise glockenförmigen Unterteil 17, einem zylindrischen Mittelteil 18 und einem Ober¬ te l in Form der vorerwähnten Krone 2, die für verschiedene An¬ wendungsfälle unterschiedlich gestaltet sein kann und daher zweckmäßig aufsteckbar und auswechselbar ist.A plucking tube 15 is rotatably mounted on the system axis 11 as part of the plucking head 3 by means of a bearing bush 16; the plucking tube 15 can be made in one piece, or, as can be seen in FIG. 2, can be composed of three parts for easier manufacture and assembly, namely a partially bell-shaped lower part 17, a cylindrical middle part 18 and an upper part 1 in the form of the aforementioned crown 2, which can be designed differently for different applications and is therefore expediently attachable and replaceable.
Das Unterteil 17 des Zupfrohres 15 ist mit einer Lagerbuchse 16 versehen und trägt auf der Innenfläche des glockenförmigen Berei- ches 19 eine Innenverzahnung 20, in die das mit dem Motorritzel 12 kämmende Zahnrad 13 eingreift, wodurch die Antriebsverbindung zwischen der Motorwelle 9 und dem Zupfrohr 15 geschlossen ist. Das Mittelteil 18 des Zupfrohres 15, das das Unterteil 17 in Höhe (Fig. 2) der Lagerbuchse 1.6 übergreift, trägt an seinem freien Ende zwei um Achsen 21 und 22 schwenkbare Klemmbacken 23 und 24, die in bekannter und daher nicht näher erläuterter Weise mit dem Innenrand der Krone 2 zusammenwirken und durch eine zwischen bei¬ den Klemmbacken 23 und 24 eingesetzte Druckfeder 25 in Schlie߬ stellung gedrängt werden, wie aus Fig. 2 zu entnehmen ist. Auf der Systemachse 11 ist ein speziell gezahntes Rad, nachstehend als Klinkenrad 26 bezeichnet, durch Aufpressen starr befestigt. Oberhalb (Fig. 2) dieses Klinkenrades 26 ist ein Nocken 27 als weiteres Teil des Zupfkopfes 3 auf der Systemachse 11 drehbar ge¬ lagert und mittels einer Klemmhülse 28 gegen Axialverschiebung gesichert. Die Klemmbacken sind jenseits ihrer Schwenkachsen 21 und 22 mit nach unten führenden (Fig. 2) Hebelarmen 29 und 30 versehen, die unter der Wirkung der Feder 25 über in den Hebel¬ armen eingepreßte Kugeln 31 und 32, die der Reibungsminderung dienen, am Nocken 27 teilweise anliegen (Fig. 4). In einen ver¬ breiterten Fußteil 33 des Nockens 27 sind beiderseits und paral¬ lel zu der Systemachse 11 zwei diametral gegenüberliegende Achsen 34 und 35 eingesetzt, auf denen - wie in Fig. 3 zu entnehmen ist - zwei Klinken 36 und 37 schwenkbar gelagert sind, die die Form eines zweiarmigen Hebels haben. An einem Hebelende 38 bzw. 39 der beiden Klinken 36 und 37 ist je ein Zahn 40 bzw. '41 vorgesehen, der mit der Verzahnung 42 des Klinkenrades 26 zusammenwirkt. Eine beiden Klinken 36 und 37 gemeinsame Spreizfeder 43 greift mit ihren freien Enden 44 bzw. 45 an den anderen Hebelarmen 46 bzw. 47 der Klinken 36 und 37 an und drängt diese in die Eingriff¬ stellung mit der Verzahnung 42 des Klinkenrades 26. Auf der Innenfläche 48 des zylindrischen Mittelstei1s 18 des Zupfrohres 15 ist eine Innenkurve 49 angebracht, die mit angepaßten, d.h. in ihre Bahn 53 hineinragenden Rückenprofilen 50 bzw. 51 an den Hebelarmen 46 bzw. 47 der Klinken 36 bzw. 37 zusammenwirkt, und zwar im Sinne der Aushebung der Klinken 36 bzw. 37 aus der Ver¬ zahnung 42 des Klinkenrades 26 entgegen der Wirkung der Spreiz¬ feder 43.The lower part 17 of the plucking tube 15 is provided with a bearing bush 16 and bears on the inner surface of the bell-shaped area. ches 19 an internal toothing 20, in which the meshing with the motor pinion 12 engages gear 13, whereby the drive connection between the motor shaft 9 and the plucking tube 15 is closed. The middle part 18 of the plucking tube 15, the lower part 17 at the height (FIG. 2) of the bearing bush 1 . 6 overlaps, carries at its free end two clamping jaws 23 and 24 which can be pivoted about axes 21 and 22 and which cooperate with the inner edge of the crown 2 in a known and therefore not explained manner and by means of a compression spring 25 inserted between the clamping jaws 23 and 24 be pushed into the closed position, as can be seen from FIG. 2. On the system axis 11, a specially toothed wheel, hereinafter referred to as ratchet wheel 26, is rigidly attached by pressing. Above (FIG. 2) this ratchet wheel 26, a cam 27 as a further part of the plucking head 3 is rotatably mounted on the system axis 11 and secured against axial displacement by means of a clamping sleeve 28. Beyond their pivot axes 21 and 22, the clamping jaws are provided with downward (FIG. 2) lever arms 29 and 30, which act on the cam under the action of the spring 25 via balls 31 and 32 which are pressed into the lever arms and serve to reduce friction 27 are partially present (Fig. 4). In a widened base part 33 of the cam 27, two diametrically opposite axes 34 and 35 are inserted on both sides and parallel to the system axis 11, on which - as can be seen in FIG. 3 - two pawls 36 and 37 are pivotably mounted, which have the shape of a two-armed lever. To a lever end 38 and 39 of the two pawls 36 and 37 a respective tooth 40 and '41 is provided which cooperates with the teeth 42 of the ratchet wheel 26th A spreading spring 43 common to both pawls 36 and 37 engages with its free ends 44 and 45 on the other lever arms 46 and 47 of the pawls 36 and 37 and urges them into the engagement position with the toothing 42 of the ratchet wheel 26. On the Inner surface 48 of the cylindrical central part 18 of the plucking tube 15 is provided with an inner curve 49, which is matched with, ie in their web 53 protruding back profiles 50 and 51 on the lever arms 46 and 47 of the pawls 36 and 37 cooperate, in the sense of lifting the pawls 36 and 37 from the teeth 42 of the ratchet wheel 26 against the action of the spread ¬ spring 43.
Das Klinkenrad 26 und die beiden schwenkbaren Klinken 36 und 37 bilden zusammen ein Klinken-Schrittschaltwerk, das von der Innen¬ kurve 49 gesteuert, die stetig rotierenden Drehbewegungen des Zupfrohres 15 des Zupfköpfes 3 in eine intermittierende Drehbe¬ wegung des Nockens 27 übersetzt, und zwar in nachstehend be¬ schriebener Weise (vgl. Fig. 3 bis 5, letztere mit zugehöriger Erläuterung): Das Zupfrohr 15 dreht sich vom Motor 4 über das Ritzel 12 und das Zahnrad 13 angetrieben, in Richtung des Pfeiles A. In der in Fig. 3 dargestellten Ausgangsposition ist die obere Klinke 36 mit ihrem Zahn 40 in die Verzahnung 42 des Klinkenrades 26 eingerastet und sperrt eine Bewegung des Nockens 27 in beiden Drehrichtungen. Durch die in Fig. 3 dargestellte konstruktive Ausführung und Anordnung der Klinken 36 und 37 wirken diese in beiden Drehrichtungen selbsthemmend. Die Haltefunktion erfordert daher minimale Kraft der Spreizfeder 43 und praktisch keine Rei¬ bung aufgrund der Selbsthemmung zwischen den Klinken und dem Klinkenrad. Die untere Klinke 37 liegt mit ihrem Zahn 41 auf dem Kopf 52 des jeweils zugeordneten Zahnes der Klinkenrad-Verzahnung 42 auf und befindet sich damit in Vorraststellung. Der Nocken 27 hat die in Fig. 4 dargestellte Position und die Kugeln 30, 31 der Klemmbacken 23, 24 liegen am Außenradius R, an, so daß die Klemmbacken 23, 24 in die Offenstellung gedrängt sind.The ratchet wheel 26 and the two pivotable pawls 36 and 37 together form a ratchet step mechanism which, controlled by the inner curve 49, translates the continuously rotating rotary movements of the plucking tube 15 of the plucking head 3 into an intermittent rotational movement of the cam 27, specifically in the manner described below (cf. FIGS. 3 to 5, the latter with an associated explanation): the plucking tube 15 rotates driven by the motor 4 via the pinion 12 and the toothed wheel 13, in the direction of arrow A. In the direction shown in FIG. 3 shown starting position, the upper pawl 36 is engaged with its tooth 40 in the toothing 42 of the ratchet wheel 26 and blocks a movement of the cam 27 in both directions of rotation. Due to the constructive design and arrangement of the pawls 36 and 37 shown in FIG. 3, they act self-locking in both directions of rotation. The holding function therefore requires minimal force from the spreading spring 43 and practically no friction due to the self-locking between the pawls and the ratchet wheel. The lower pawl 37 rests with its tooth 41 on the head 52 of the respectively assigned tooth of the ratchet toothing 42 and is thus in the pre-locking position. The cam 27 has the position shown in FIG. 4 and the balls 30, 31 of the clamping jaws 23, 24 lie against the outer radius R, so that the clamping jaws 23, 24 are forced into the open position.
Im Verlaufe der Drehbewegung des Zupfkopfes 3 gemäß Pfeil A kommt nun die an der Innenfläche 48 des Mittelteiles des Zupfrohres 15 angebrachte Innenkurve 49 zur Berührung mit Rückenprofil 50 der oberen Klinke 36. Durch entsprechende Abstimmung der Lage des Nockens 27 mit dem Klinkenschaltwerk (26, 36, 37) ist sicherge¬ stellt, daß in diesem Moment die Öffnungphase der Klemmbacken 23, 24 beendet ist und ihre Kugeln 31, 32 ab jetzt mit einem Luft¬ spalt über den Innenradius R. des Nockens 27 laufen, wie in Fig. 4 durch die gestrichelt eingezeichneten Kugelumrisse ange¬ deutet ist. In dieser nun für den Nocken 27 und die obere Klinke 36 drehkraftfreien Phase wird sie aus dem Klinkenrad 26 ausgeho¬ ben und beginnt durch Reibung zwischen der Innenkurve 49 und der Klinke 36 im Richtung des Pfeiles A zusammen mit dem Nocken 27 zu drehen; nun kommt bereits die Steigungskurve des Nockens 27, das heißt der Übergang des Innenradius R 1. zum Außenradius zurIn the course of the rotational movement of the plucking head 3 according to arrow A, the inner curve 49 attached to the inner surface 48 of the central part of the plucking tube 15 comes into contact with the back profile 50 of the upper pawl 36 Cam 27 with the ratchet mechanism (26, 36, 37) ensures that at this moment the opening phase of the clamping jaws 23, 24 has ended and its balls 31, 32 now have an air gap over the inner radius R. of the cam 27 run, as is indicated in FIG. 4 by the dashed outline of the sphere. In this phase, which is now free of torque for the cam 27 and the upper pawl 36, it is excavated from the ratchet wheel 26 and begins to rotate together with the cam 27 by friction between the inner curve 49 and the pawl 36 in the direction of arrow A; now comes the slope curve of the cam 27, that is, the transition from the inner radius R 1 to the outer radius to
Wirkung, wodurch gegebenenfalls der restliche Drehimpuls die untere Klinke 37 in die Verzahnung 42 des Klinkenrades 26 ein¬ rasten läßt. Diese untere Klinke 37 übernimmt nun die Rastfunk¬ tion zur Fixierung des Nockens 27 während der Klemmbacken-Öff- nungs-Offenhalt- und Schließphase, während die obere Klinke 36 nach Freigabe durch die Innenkurve ihrerseits in Vorrastposition geht. Wenn im weiteren Verlauf der Drehbewegung des mittleren Teils 18 des Zupfrohrs 15 die Innenkurve 49 die untere Klinke 37 erreicht, beginnt hier der für die obere Klinke 36 beschriebene Ablauf entsprechend.Effect whereby the remaining angular momentum may cause the lower pawl 37 to engage in the toothing 42 of the ratchet wheel 26. This lower pawl 37 now takes over the locking function for fixing the cam 27 during the jaw opening, opening and closing phases, while the upper pawl 36 in turn goes into the pre-locking position after being released by the inner curve. If the inner curve 49 reaches the lower pawl 37 in the further course of the rotational movement of the middle part 18 of the plucking tube 15, the sequence described for the upper pawl 36 begins here accordingly.
Nachstehend ist der Bewegungsablauf der oben angegebenen Bauele¬ mente, jetzt bezogen auf ihre jeweilige Winkelposition, bei der Drehung des Zupfkopfes anhand des Diagrammes Fig. 5 nochmals näher erläutert. Es laufen folgende Funktionen ab:The movement sequence of the above-mentioned components, now based on their respective angular position, when the plucking head rotates is explained again in more detail with reference to the diagram in FIG. 5. The following functions run:
0° Ausgangsposition aller Elemente wie in Fig. 3 darge¬ stellt0 ° starting position of all elements as shown in FIG. 3
10° Nocken 27: Übergangskurve zum Innenradius R. beginnt; Klemmbacken 23, 24: Schließbewegung beginnt10 ° cam 27: transition curve to inner radius R. begins; Jaws 23, 24: closing movement begins
50° Klemmbacken 23, 24: Schließbewegung beendet - Zupf¬ spalt geschlossen 60° Nocken 27: Übergangskurve beendet, R. beginnt; obere Klinke 36: Aushubbewegung beginnt 90° obere Klinke 36: Aushubbewegung vollendet, System zur50 ° clamping jaws 23, 24: closing movement ended - plucking gap closed 60 ° cam 27: transition curve ended, R. begins; upper pawl 36: excavation movement begins 90 ° upper pawl 36: excavation movement completed, system for
Drehung frei 110° Bereich zum Einrasten der unteren Klinke 37 durch 140° DrehungFree rotation 110 ° area for engaging the lower pawl 37 by 140 ° rotation
136° Nocken 27: Ansteigende Übergangskurve beginnt 146° Klemmbacken 23, 24: Öffnungsbewegung beginnt 151° obere Klinke 36 geht aus voll ausgehobener Position in 161° Vorrastposition über (Klinke 36 legt sich auf den Kopf136 ° cam 27: Ascending transition curve begins 146 ° jaws 23, 24: opening movement begins 151 ° upper pawl 36 goes from fully raised position to 161 ° pre-locking position (pawl 36 lies on the head
52 des Klinkenradzahnes) 186° Nocken 27: Außenradius R der Nockenkurve beginnt52 of the ratchet wheel tooth) 186 ° cam 27: outer radius R of the cam curve begins
Klemmbacken 23, 24: Volle Backenöffnung ist erreicht 06° wie oben bei 10°. Es beginnt um 180° versetzt am Nocken 27 dasselbe Spiel (der Nocken 27 selbst wurde um ca. 16° verdreht) 46° wie oben bei 50°. 56β wie oben bei 60° geht am Nocken Übergangskurven in Innenradius R. über, gleichzeitig beginnt jetzt für die untere Klinke 37 die Aushubbewegung 86° Untere Klinke 37: Aushubbewegung beendet 06° Bereich zum Einrasten der oberen Klinke 36 36° (vgl. Bereich 110 - 140°) 32° wie oben bei 136° 42° wie oben bei 146° 47° untere Klinke 37 geht aus voll ausgehobener Position in 57° Vorrastposition über (vgl. Bereich 151 - 161°) 82° wie oben bei 186° 92° neue Ausgangsposition für den nächsten Umlauf des Nocken-Klinken-Systems. In dieser neuen Ausgangsposi¬ tion ist der Zupfort gegenüber der Ausgangsposition 0° in Drehrichtung um eine Klinkenteilung, d.h. um 32° versetzt. Nach 11 Umdrehungen befinden sich demnach alle Elemente wieder in der gleichen Zuordnung und Ausgangsposition "0°", wie in Fig. 3 dargestellt.Jaws 23, 24: Full jaw opening is reached 06 ° as above at 10 °. The same play begins on the cam 27 offset by 180 ° (the cam 27 itself was rotated by approximately 16 °) 46 ° as above at 50 °. 56 β as above at 60 ° the transition curve at the cam changes to the inner radius R. At the same time, the excavation movement for the lower pawl 37 now begins 86 ° lower pawl 37: excavation movement ends 06 ° range for engaging the upper pawl 36 36 ° (see range 110 - 140 °) 32 ° as above at 136 ° 42 ° as above at 146 ° 47 ° lower pawl 37 changes from fully raised position to 57 ° pre-locking position (see range 151 - 161 °) 82 ° as above at 186 ° 92 ° new starting position for the next round of the cam-pawl system. In this new starting position, the comfort compared to the starting position is 0 ° in the direction of rotation by a pawl pitch, ie offset by 32 °. After 11 rotations, all elements are again in the same assignment and starting position "0 °", as shown in FIG. 3.
Der Zeichnung Fig. 3 liegt beispielsweise eine Klinkenradteilung von 11 Teilungen zugrunde. Es kann jedoch auch eine andere Tei¬ lung gewählt werden. Ein Teilungsschritt beträgt somit annähernd 360:11 = 32,73°. Die Verstellung des Nocken-Klinken-Systems beim wechselseitigen Rastvorgang der Klinken beträgt jeweils einen halben Teilungsschritt, d.h. 32,73°. Um diesen Winkel verstellt sich das ZupfSystem von einem Zupfvorgang zum nächsten. The drawing Fig. 3 is based, for example, a ratchet wheel division of 11 divisions. However, a different division can also be selected. A division step is therefore approximately 360: 11 = 32.73 °. The adjustment of the cam-pawl system during the mutual latching process of the pawls is in each case half a division step, i.e. 32.73 °. The plucking system moves by this angle from one plucking process to the next.

Claims

Patentansprüche Claims
1. Zupfkopf für Epiliergeräte mit einem im Gerätegehäuse drehbar gelagerten, von diesem teilweise umschlossenen, mit Klemm¬ backen versehenen, motorisch angetriebenen Zupfröhr und einem in diesem koaxial ausgerichteten, drehbar angeordneten, mit den Klemmbacken in Wirkverbindung stehenden Nocken, gekenn¬ zeichnet durch ein einerseits mit dem Zupfrohr (15) und an¬ dererseits mit dem Nocken (27) in Bewegungsverbindung stehen¬ des selbsthemmendes Schrittschaltwerk (26, 36, 37).1. Plucking head for epilators with a rotatably mounted in the device housing, partially enclosed by this, provided with clamping jaws, motor-driven plucking tube and a coaxially aligned, rotatably arranged cam that is operatively connected to the clamping jaws, characterized by one hand with the plucking tube (15) and on the other hand with the cam (27) are in motion connection of the self-locking stepping mechanism (26, 36, 37).
2. Zupfrohr nach Anspruch 1, dadurch gekennzeichnet, daß das Schrittschaltwerk als Klinken-Schrittschaltwerk ausgebildet ist, bestehend aus einem Klinkenrad (26) und mindestens zwei mit diesem zusammenwirkenden, schwenkbar gelagerten, unter Federwirkung (Feder 43) in EingriffStellung mit dem Klinken¬ rad (26) gedrängten Klinken (36, 37).2. Plucking pipe according to claim 1, characterized in that the stepping mechanism is designed as a ratchet stepping mechanism consisting of a ratchet wheel (26) and at least two pivotally mounted, cooperating with this, under spring action (spring 43) in engagement position with the ratchet wheel (26) crowded pawls (36, 37).
3. Zupfröhr nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß der Zupfköpf (3) eine koaxial zu seiner geometrischen Achse (10) im Gerätegehäuse (1) fixierte Systemachse (11) aufweist, auf der der Nocken (27) drehbar gelagert, und, zu diesem benachbart, das Klinkenrad (26) befestigt ist, und daß die Klinken (36, 37) am Fußteil (33) des Nockenkörpers schwenkbar gelagert sind.3. Plucking tube according to claims 1 and 2, characterized in that the plucking head (3) has a system axis (11) fixed coaxially to its geometric axis (10) in the device housing (1), on which the cam (27) is rotatably mounted, and, adjacent to this, the ratchet wheel (26) is fixed, and that the pawls (36, 37) are pivotally mounted on the foot part (33) of the cam body.
4. Zupfröhr nach den Ansprüche 1 bis 3, dadurch gekennzeichnet, daß auf der Innenfläche (48) des Zupfrohres (15) in Höhe der Klinken (36, 37) eine Innenkurve (49) angebracht ist und daß die Klinken (36, 37) mit je einem Rückenprofil (50 bzw. 51) versehen sind, das in die Bahn (53) der mit dem Zupfrohr (15) rotierenden Innenkurve (49) hineinragt. 4. Plucking tube according to claims 1 to 3, characterized in that on the inner surface (48) of the plucking tube (15) at the level of the pawls (36, 37) an inner curve (49) is attached and that the pawls (36, 37) are each provided with a back profile (50 or 51) which projects into the path (53) of the inner curve (49) rotating with the plucking tube (15).
EP92910145A 1991-06-18 1992-05-14 Hair-plucking head for depilation instrument Expired - Lifetime EP0589907B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4120014 1991-06-18
DE4120014A DE4120014C1 (en) 1991-06-18 1991-06-18
PCT/EP1992/001056 WO1992022227A1 (en) 1991-06-18 1992-05-14 Hair-plucking head for depilation instrument

Publications (2)

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EP0589907A1 true EP0589907A1 (en) 1994-04-06
EP0589907B1 EP0589907B1 (en) 1996-03-20

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US (1) US5458607A (en)
EP (1) EP0589907B1 (en)
JP (1) JPH06508771A (en)
AT (1) ATE135539T1 (en)
DE (2) DE4120014C1 (en)
ES (1) ES2085013T3 (en)
WO (1) WO1992022227A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5470332A (en) * 1989-12-21 1995-11-28 Thomas L. Mehl, Sr. System for permanent removal of multiple hairs
WO1995020340A1 (en) * 1994-01-27 1995-08-03 Payer Elektroprodukte Gesellschaft M.B.H. Depilator
FR2776858B1 (en) * 1998-03-27 2003-07-04 Genus Technologies HOLDING, POSITIONING, OR CLAMPING DEVICE, ELECTRICALLY ACTUATED
JP3873550B2 (en) * 1999-11-25 2007-01-24 松下電工株式会社 Hair removal equipment
WO2004064567A2 (en) * 2003-01-16 2004-08-05 Conair Corporation Hand-held buffing device

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Publication number Priority date Publication date Assignee Title
DE3922949C1 (en) * 1989-07-12 1990-09-27 Braun Ag, 6000 Frankfurt, De
FR2658050B1 (en) * 1990-02-14 1993-12-03 Moulinex EPILATORY APPARATUS.
DE4023252A1 (en) * 1990-07-21 1992-01-23 Braun Ag PLUG HEAD FOR MOTORIZED EPILIER DEVICES
US5234441A (en) * 1992-01-06 1993-08-10 Braun Aktiengesellschaft Epilating appliance

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* Cited by examiner, † Cited by third party
Title
See references of WO9222227A1 *

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DE59205775D1 (en) 1996-04-25
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WO1992022227A1 (en) 1992-12-23
EP0589907B1 (en) 1996-03-20
ATE135539T1 (en) 1996-04-15
US5458607A (en) 1995-10-17
ES2085013T3 (en) 1996-05-16

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