EP0487537A1 - Blade block coupling for twin-headed razors. - Google Patents

Blade block coupling for twin-headed razors.

Info

Publication number
EP0487537A1
EP0487537A1 EP90910558A EP90910558A EP0487537A1 EP 0487537 A1 EP0487537 A1 EP 0487537A1 EP 90910558 A EP90910558 A EP 90910558A EP 90910558 A EP90910558 A EP 90910558A EP 0487537 A1 EP0487537 A1 EP 0487537A1
Authority
EP
European Patent Office
Prior art keywords
drive element
drive
dry
spring
bearing bore
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
EP90910558A
Other languages
German (de)
French (fr)
Other versions
EP0487537B1 (en
Inventor
Helmut Durr
Albrecht Jestadt
Hans-Eberhard Heintke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Priority to AT90910558T priority Critical patent/ATE95459T1/en
Publication of EP0487537A1 publication Critical patent/EP0487537A1/en
Application granted granted Critical
Publication of EP0487537B1 publication Critical patent/EP0487537B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/048—Complete cutting head being movable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3853—Housing or handle
    • B26B19/386—Means for attaching the head thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/10—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly
    • B26B19/102—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly with a secondary cutting unit being translated or slid into an operating position

Definitions

  • the invention relates to a dry shaving apparatus with a pair of parallel, elongated shaving heads, the lower blades of which are resiliently arranged on a common coupling element.
  • a dry shaver of the type mentioned is known from JP-U 57-135365.
  • the drive for the two bottom knives running parallel to one another consists of a single component, namely a swing bridge, a coupling element formed on the swing bridge and two drive pins formed on the coupling element which the lower knife resiliently mounted and held by a clip connection.
  • a dry shaving apparatus with shaving heads running parallel to one another is known, the lower knives of which are arranged on a common coupling element.
  • the coupling element is resiliently mounted on the drive element and coupled to it via a swivel lock. This type of resilient support of the lower knives does not enable the respective lower knives to deflect separately during shaving, depending on the respective contact pressures acting on them differently.
  • the object of the invention is to provide a dry shaving apparatus of the type mentioned at the outset such that its lower knives can be safely and easily handled, coupled and decoupled together with a drive element of the dry shaving apparatus, while maintaining the resilient support assigned to each lower knife and attachment to the upper knife (s).
  • this object is achieved in a device of the type mentioned above in that the coupling element is detachably coupled to the drive element of the electric drive by means of a bearing bolt engaging in a bearing bore on a drive element, that the coupling element is provided by at least one in a provided on the bearing pin prismatic groove engaging spring element is held in contact with the drive element, and that the lock consisting of the spring element and the prismatic groove can be unlocked against the pressure of the spring element by means of one of the inclined surface of the prismatic groove resting on the spring element.
  • a particular advantage of this handling-appropriate coupling of the two lower knives via a common coupling element - and thus with retention of the spring support and bearing associated with each lower knife and bearing on the upper knife or knives - with a drive element of the electric drive is both this coupling connection for dry shavers with a pivotably mounted shaving head (FIGS. 1, 2 and 3) as well as for a dry shaving apparatus with a shaving head which can be removed on the housing but is otherwise immovable.
  • the coupling connection enables the construction consisting of the two lower knives and the coupling element to be easily removed both for the purpose of replacement after the lower knives have worn out and for the purpose of better cleaning of this construction, including the respective shaving head frame.
  • a tolerance-independent and secure contact of the coupling element on the drive element is ensured in that the inclined surfaces of the prismatic groove on the bearing pin are provided with a different pitch and the inclined surface with a smaller pitch in the coupled state of the coupling element and the drive element is attached to it Spring element is acted upon.
  • a particularly advantageous embodiment of the invention is characterized in that the bearing bore opens into a cavity provided in the drive element and that at least one spring protruding into the cavity is formed on the drive element as an extension of the bearing bore.
  • the drive element is part of a swing bridge arranged in the shaving head frame of the dry shaving apparatus. According to a further embodiment, the drive element is part of a swing bridge arranged in the housing of the dry shaving apparatus.
  • the drive element consists of an oscillating drive pin with a bearing bore arranged on its central axis and a groove recessed on the outside in the bearing bore wall for receiving the spring element, the groove partially cutting the interior of the bearing bore.
  • the spring element consists of a spring clip adapted to the shape of the groove and partially penetrating the interior of the bearing bore.
  • form-locking elements which can be brought into engagement and which determine the orientation of the lower knives are arranged on the coupling element and on the drive element.
  • two form-locking elements running parallel to the oscillating movement of the lower knives are expediently arranged on the coupling element and on the drive element in order to bring about an alignment of the two lower knives in the direction of oscillation.
  • the coupling element and the drive element because four interlocking elements are arranged in such a way that the common center axis of the bearing bore and the bearing pin runs through the intersection of the perpendicularly intersecting directions of extension of the interlocking elements.
  • the extent of the inclined surface is preferably matched to the extension of the form-locking elements in such a way that a change of the form-fitting elements in engagement with one another is ensured with the spring element resting on the inclined surface.
  • the interlocking elements are expediently formed from grooves and elevations of prismatic shape.
  • FIG. 1 shows a part of a dry shaving apparatus with the shaving head removed in perspective
  • FIG. 2 shows a cross section through a pivotably mounted shaving head and the upper part of the dry shaver housing
  • FIG. 3 shows a longitudinal section through a shaving head which is pivotably mounted on the housing of the dry shaving apparatus
  • FIG. 4 shows a cross section through a shaving head frame arranged on the housing of the dry shaving apparatus
  • Fig. 5 shows a section A-A of FIG. 4 by a drive element with a spring element.
  • Fig. 1 is the upper part of a dry shaver, the housing with 1, the on and off switch with 2, the long hair trimmer with 3, the top of the housing with 4, which comes out of the opening 5 in the
  • the top 4 of the housing has projecting drive pin 6, the swivel arms 9 and 10 extending the narrow housing sides 7 and 8 and the shaving head 12 pivotally mounted by means of bearing pins 11 in bearing holes 12 provided in the swivel arms with SK.
  • the shaving head SK shows a pair of shaving heads 14 and 15 running parallel to one another, which are formed by two lower knives 16 and 17 and by shaving foil 18 which is curved around these lower knives.
  • the lower knives 16 and 17 are resiliently mounted on a common coupling element 19 - see FIG. 2.
  • the coupling element 19 is coupled to a drive element 47, which is part of a swing bridge mounted in the shaving head frame 21 - see FIGS. 2 and 3.
  • the latter is provided with two transverse ribs 22 and 23, in the intermediate space 24 of which the .
  • Drive pin 6 engages.
  • the transverse ribs 22 and 23 of the swing bridge oscillate when the drive is switched on within the opening 26 provided in the base plate 25 of the shaving head frame 21.
  • FIG. 2 shows a cross section through the pivotably mounted shaving head SK according to FIG. 1.
  • the two lower knives 16, 17 each rest against a shaving foil 18 which is arched in the shaving head frame 21 and which can also be formed in one piece.
  • the coupling element 19 consists of a base plate 27 with two molded-on, pot-like containers 28, 29 and this surrounds the pot-like container covers 30, 31 as well as the guide bolts 32 arranged inside the containers 28, 29 and the container covers 30, 31. 33, including the compression springs 34, 35 surrounding them.
  • the guide pin 32 is fastened in the container 28 and the guide pin 33 in the container 29.
  • a sliding bore 40, 41 for the respective guide pin 32, 33 is formed in the respective container lid 30, 31.
  • the container covers 30, 31 are coupled to the containers 28, 29 by means of a clip connection which enables the vertical up and down movement of the container lids 30, 31 - see FIG. 3.
  • the lower knives 16, 17 are each pivotably articulated on the respective upper ends of the container lids 30, 31 by means of a coupling piece 36, 37 and articulated bolts 38, 39 arranged transversely to the longitudinal extent of the lower knives 16, 17 - see FIGS. 2 and 3.
  • a bearing bolt 42 is fastened in the center of the two guide bolts 32, 33 and extends from the base plate 27 in the direction of the housing 1.
  • the bearing bolt 42 facing away from the base plate 27, the latter is provided with a circumferential, prismatic groove 43, the inclined surfaces 44, 45 of which have a different pitch, the inclined surface 45 running towards the end of the bearing bolt 42 being provided with a smaller pitch is as the opposite inclined surface 44.
  • the bearing pin 42 extends through a bearing bore 48 provided in the cover plate 46 of the drive element 47.
  • two spring elements 49, 50 in the form of spring legs with molded-on locking cams 51 are formed on the side of the cover plate 46 facing the housing 1. 52 molded.
  • interlocking elements 53 to 56 which can be brought into engagement, are formed or formed on the cover plate 46 and on the base plate 27.
  • These form-locking elements preferably consist of prismatic projections 53, 54 which engage in appropriately shaped prismatic grooves 55, 56.
  • the interlocking form-locking elements 53 to 56 serve to define the defined orientation of the lower blades 16 and 17, which are resiliently arranged on the coupling element 19, in the direction of vibration.
  • four interlocking elements 53 to 60 in engagement are arranged on the coupling element 19 and on the drive element 47 such that the common central axis M of bearing bolt 42 and bearing bore 48 through the intersection which extends at right angles intersecting directions of extension of the form-locking elements 53 to 60.
  • the engaged form-locking elements are mutually interchangeable with spring elements 49 resting on the inclined surface 45 via the locking cams 51, 52. 50 feasible.
  • Such a change for example a rotation of the coupling element by 90 °, brings about a corresponding transverse position of the lower knives 16, 17 with respect to their direction of vibration and enables easy cleaning of the lower knives 16, 17 in the state coupled to the drive element 47 and of the interior of the shaving head frame 21 with the shaving foil removed 18.
  • the drive element 47 according to FIG. 2 is part of an oscillating bridge arranged in the pivotably mounted shaving head SK - see FIG. 1, which is described in more detail with reference to FIG. 3.
  • Fig. 3 is corresponding to FIG. 1, the housing with 1, the molded arms on the housing with 9 and 10, the out of the opening
  • the shaving head frame 21 of which the end walls 62, 63 and the inner wall 64 projecting into the interior can be seen in FIG. 3, is pivotably mounted on the swivel arms 9 and 10 by means of an articulated connection (not shown) at G, G.
  • the bottom plate 27 closing the shaving head frame 21 is U-shaped.
  • the legs 66, 67 of the base plate 27 extend parallel to the end walls 62, 63 of the shaving head frame.
  • the swing bridge 61 consisting of two hanging spring arms 68, 69 and a plate 70 connecting the spring arms 68 is fastened.
  • the base plate 27 has an opening 26 into which the transverse ribs 22, 23 of the swing bridge 61 for the purpose of coupling with the drive pin
  • the drive element 47 serving for coupling with the coupling element 19 is molded into the base plate 70 and is therefore part of the swing bridge 61.
  • the positive locking elements 57 to 60 are in engagement due to the coupled state of the coupling element 19 and the drive element 47.
  • the seal 71 is attached on the one hand to the drive element 47 and on the other hand to the inner wall 64 of the shaving head frame.
  • the shaving head SK is arranged immovably on the housing 1 of the dry shaving apparatus.
  • the structural design of the coupling element 19 and the lower knives 16 and 17 articulated by means of the coupling pieces 36, 37 corresponds to the embodiment described in detail in FIG. 2.
  • the end of the oscillatingly driven drive element 47 which is used for coupling to the coupling element 19, projects through the opening 5 provided in the upper side 4 of the housing the interior of the shaving head SK.
  • the drive element 47 consists of a drive pin with a bearing bore 48 arranged on its central axis M in the form of a blind hole and a groove 73 recessed on the outside in the bearing bore wall 72 for receiving a spring element 49.
  • the course of the groove 73 in the bearing bore wall 72 is designed such that this partially intersects the interior of the bearing bore 48, as is illustrated in more detail by the section AA in FIG. 4 in FIG. 5 with the reference numerals from FIG. 4.
  • the spring element 49 consists of an essentially U-shaped bow with a curved part 74 curved toward the bearing bore 48 for the purpose of partial engagement in the bearing bore 48.
  • the distance of the groove 73 from the cover plate 46 of the drive element ⁇ mentes 47 is dimensioned such that when a bearing pin 42 of the coupling element 19 is in engagement with the bearing bore 48, the spring element 49 comes into contact with the inclined surface 45 of the prismatic groove 43 provided on the bearing pin 42, in order to use the Spring element 49 outgoing spring effect to accomplish the coupling and secure contact of the coupling element 19 and drive element 47.
  • the coupling element 19 with the lower knives 16 and 17 resiliently mounted on the latter can be easily removed from the drive element 47 against the spring pressure of the spring element 49.
  • the bearing pin 42 is tapered at the end in order to simplify its insertion into the bearing bore and also to facilitate the expansion of the spring element 49 when it is plugged together.

Landscapes

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

Abstract

Rasoir électrique comportant une paire de têtes porte-lame parallèles (14, 15) et dont la lame inférieure (16, 17) est disposée élastiquement sur un élément de couplage commun (19), ce dernier pouvant être couplé avec l'organe moteur (47) de l'entraînement électrique au moyen d'un connecteur enfichable (48) et enlevé en agissant contre la pression d'un élément à ressort (51, 52).Electric razor comprising a pair of parallel blade holder heads (14, 15) and the lower blade (16, 17) of which is resiliently disposed on a common coupling element (19), the latter being able to be coupled with the motor member ( 47) from the electric drive by means of a plug-in connector (48) and removed by acting against the pressure of a spring element (51, 52).

Description

Messerblockkupplung für DoppelköpfrasiererKnife block coupling for double-headed razors
Die Erfindung bezieht sich auf einen Trockenrasierapparat mit einem Paar von parallel zueinander verlaufenden, länglichen Scher¬ köpfen, deren Untermesser auf einem gemeinsamen Kupplungselement federnd angeordnet sind.The invention relates to a dry shaving apparatus with a pair of parallel, elongated shaving heads, the lower blades of which are resiliently arranged on a common coupling element.
Ein Trockenrasierapparat der eingangs genannten Art ist aus dem JP-U 57-135365 bekannt. Wie aus den Figuren 2 und 3 dieser Druck¬ schrift ersichtlich, besteht der Antrieb für die beiden parallel zueinander verlaufenden Untermesser aus einem einzigen Bauteil, und zwar einer Schwingbrücke, einem an der Schwingbrücke angeform¬ ten Kupplungselement und zwei an dem Kupplungselement angeformten Antriebsstiften, auf denen die Untermesser federnd gelagert und mittels einer Klippverbindung gehalten sind.A dry shaver of the type mentioned is known from JP-U 57-135365. As can be seen from FIGS. 2 and 3 of this publication, the drive for the two bottom knives running parallel to one another consists of a single component, namely a swing bridge, a coupling element formed on the swing bridge and two drive pins formed on the coupling element which the lower knife resiliently mounted and held by a clip connection.
Aus der DE-OS 2624601 ist ein Trockenrasierappart mit parallel zueinander verlaufenden Scherköpfen bekannt, deren Untermesser auf einem gemeinsamen Kupplungselement aufsteckbar angeordnet sind. Das Kupplungselement ist auf dem Antriebselement federnd gelagert und mit diesem über einen Schwenkverschluß gekoppelt. Diese Art der federnden Abstützung der Untermesser ermöglicht während der Rasur kein separates Einfedern der jeweiligen Untermesser in Ab¬ hängigkeit von den jeweiligen auf diese unterschiedlich einwirken¬ den Anpreßdrücken.From DE-OS 2624601 a dry shaving apparatus with shaving heads running parallel to one another is known, the lower knives of which are arranged on a common coupling element. The coupling element is resiliently mounted on the drive element and coupled to it via a swivel lock. This type of resilient support of the lower knives does not enable the respective lower knives to deflect separately during shaving, depending on the respective contact pressures acting on them differently.
Aufgabe der Erfindung ist es, einen Trockenrasierapparat der ein¬ gangs genannten Art so zu schaffen, daß dessen Untermesser gemein¬ sam mit einem Antriebsorgan des Trockenrasierapparates sicher und einfach handhabbar, koppelbar sowie entkoppelbar sind, und zwar unter Beibehaltung der jedem Untermesser zugeordneten, federnden Abstützung und Anlage an dem bzw. den Obermessern. Nach der Erfindung wird diese Aufgabe bei einem Gerät der eingangs genannten Art dadurch gelöst, daß das Kupplungselement mittels eines in eine Lagerbohrung an einem Antriebselement eingreifenden Lagerbolzens mit dem Antriebselement des elektrischen Antriebes lösbar gekoppelt ist, daß das Kupplungselement mittels wenigstens einem in eine am Lagerbolzen vorgesehene prismatische Nut ein¬ rastenden Federelement in Anlage an dem Antriebselement gehalten ist, und daß die aus Federelement und prismatischer Nut bestehende Verriegelung mittels einer der an dem Federelement anliegenden Schrägfläche der prismatischen Nut gegen den Druck des Federele¬ mentes entriegelbar ist.The object of the invention is to provide a dry shaving apparatus of the type mentioned at the outset such that its lower knives can be safely and easily handled, coupled and decoupled together with a drive element of the dry shaving apparatus, while maintaining the resilient support assigned to each lower knife and attachment to the upper knife (s). According to the invention, this object is achieved in a device of the type mentioned above in that the coupling element is detachably coupled to the drive element of the electric drive by means of a bearing bolt engaging in a bearing bore on a drive element, that the coupling element is provided by at least one in a provided on the bearing pin prismatic groove engaging spring element is held in contact with the drive element, and that the lock consisting of the spring element and the prismatic groove can be unlocked against the pressure of the spring element by means of one of the inclined surface of the prismatic groove resting on the spring element.
Ein besonderer Vorteil dieser handhabungsgerechten Koppelung der beiden Untermesser über ein gemeinsames Kupplungselement - und so¬ mit unter Beibehaltung der jedem Untermesser zugeordneten, federn¬ den Abstützung und Anlage an dem bzw. den Obermessern - mit einem Antriebselement des elektrischen Antriebes besteht darin, diese Koppelungsverbindung sowohl für Trockenrasierapparate mit einem schwenkbar gelagerten Scherkopf (Fig. 1, 2 und 3) als auch für einen Trockenrasierapparat mit einem auf dem Gehäuse zwar abnehm¬ bar, ansonsten jedoch unbewegbar angeordneten Scherkopf einsetzbar ist. Die Koppelungsverbindung ermöglicht ein leichtes Abnehmen der aus den beiden Untermessern und dem Kupplungselement bestehenden Bauheit sowohl zum Zwecke des Austausches nach Abnutzung der Untermesser als auch zum Zwecke einer besseren Reinigung dieser Bauheit, einschließlich des jeweiligen Scherkopfrahmens.A particular advantage of this handling-appropriate coupling of the two lower knives via a common coupling element - and thus with retention of the spring support and bearing associated with each lower knife and bearing on the upper knife or knives - with a drive element of the electric drive is both this coupling connection for dry shavers with a pivotably mounted shaving head (FIGS. 1, 2 and 3) as well as for a dry shaving apparatus with a shaving head which can be removed on the housing but is otherwise immovable. The coupling connection enables the construction consisting of the two lower knives and the coupling element to be easily removed both for the purpose of replacement after the lower knives have worn out and for the purpose of better cleaning of this construction, including the respective shaving head frame.
Eine toleranzunabhängige und sichere Anlage des Kupplungselementes an dem Antriebselement ist dadurch gewährleistet, daß die Schräg¬ flächen der prismatischen Nut am Lagerbolzen mit einer unter¬ schiedlichen Steigung versehen sind und die Schrägfläche geringe¬ rer Steigung im gekoppelten Zustand von Kupplungselement und An¬ triebselement von dem Federelement beaufschlagt ist. Eine besonders vorteilhafte Ausführungsform der Erfindung zeichnet sich dadurch aus, daß die Lagerbohrung in einen im Antriebselement vorgesehenen Hohlraum einmündet und daß als Federelement wenig¬ stens ein in den Hohlraum hineinragender Federam in Verlängerung der Lagerbohrung am Antriebselement angeformt ist.A tolerance-independent and secure contact of the coupling element on the drive element is ensured in that the inclined surfaces of the prismatic groove on the bearing pin are provided with a different pitch and the inclined surface with a smaller pitch in the coupled state of the coupling element and the drive element is attached to it Spring element is acted upon. A particularly advantageous embodiment of the invention is characterized in that the bearing bore opens into a cavity provided in the drive element and that at least one spring protruding into the cavity is formed on the drive element as an extension of the bearing bore.
In weiterer Ausgestaltung dieser Ausführungsform ist das Antriebs¬ element Bestandteil einer im Scherkopfrahmen des Trockenrasier¬ apparates angeordneten Schwingbrücke. Nach einer weiteren Aus¬ führungsform ist das Antriebselement Bestandteil einer im Gehäuse des Trockenrasierapparates angeordneten Schwingbrücke.In a further embodiment of this embodiment, the drive element is part of a swing bridge arranged in the shaving head frame of the dry shaving apparatus. According to a further embodiment, the drive element is part of a swing bridge arranged in the housing of the dry shaving apparatus.
Nach einer anderen vorteilhaften Ausführungsform der Erfindung be¬ steht das Antriebselement aus einem oszillierenden Antriebsstift mit einer auf dessen Mittenachse angeordneten Lagerbohrung und einer in der Lagerbohrungswandung außenseitig eingelassenen Nut zur Aufnahme des Federelementes, wobei die Nut den Innenraum der Lagerbohrung partiell schneidet. In weiterer Ausgestaltung dieser Ausführungsform besteht das Federelement aus einem der Form der Nut angepaßten, den Inneraum der Lagerbohrung partiell durch¬ setzenden Federbügel.According to another advantageous embodiment of the invention, the drive element consists of an oscillating drive pin with a bearing bore arranged on its central axis and a groove recessed on the outside in the bearing bore wall for receiving the spring element, the groove partially cutting the interior of the bearing bore. In a further embodiment of this embodiment, the spring element consists of a spring clip adapted to the shape of the groove and partially penetrating the interior of the bearing bore.
In weiterer Ausgestaltung der Erfindung sind am Kupplungselement und an dem Antriebselement in Eingriff bringbare, die Ausrichtung der Untermesser bestimmenden Formschlußelemente angeordnet. Zweck¬ mäßigerweise sind bei einer derartigen Ausführungsform am Kupp¬ lungselement und am Antriebselement jeweils zwei parallel zur Schwingbewegung der Untermesser verlaufende Formschlußelemente an¬ geordnet, um eine Ausrichtung der beiden Untermesser in Schwin¬ gungsrichtung zu bewerkstelligen. Um die Reinigung des Scherkopf¬ rahmens sowie der beiden Untermesser in mit dem Antrieb gekoppel¬ ten Zustand zu ermöglichen, sind nach einer weiteren Ausführungs¬ form der Erfindung am Kupplungselement und am Antriebselement je- weils vier Formschlußelemente derart angeordnet, daß die gemein¬ same Mittenachse von Lagerbohrung und Lagerbolzen durch den Schnittpunkt der sich rechtwinklig schneidenden Erstreckungsrich- tungen der Formschlußelemente verläuft. Vorzugsweise ist die Er¬ streckung der Schrägfläche auf die Erstreckung der Formschlußele¬ mente derart abgestimmt, daß ein Wechsel der im Eingriff befind¬ lichen Formschlußelemente untereinander bei an der Schrägfläche anliegendem Federelement gewährleistet ist. Zweckmäßigerweise sind die Formschlußelemente aus Nuten und Erhebungen prismatischer Formgebung gebildet.In a further embodiment of the invention, form-locking elements which can be brought into engagement and which determine the orientation of the lower knives are arranged on the coupling element and on the drive element. In such an embodiment, two form-locking elements running parallel to the oscillating movement of the lower knives are expediently arranged on the coupling element and on the drive element in order to bring about an alignment of the two lower knives in the direction of oscillation. In order to make it possible to clean the shaving head frame and the two lower knives in the state coupled to the drive, according to a further embodiment of the invention, the coupling element and the drive element because four interlocking elements are arranged in such a way that the common center axis of the bearing bore and the bearing pin runs through the intersection of the perpendicularly intersecting directions of extension of the interlocking elements. The extent of the inclined surface is preferably matched to the extension of the form-locking elements in such a way that a change of the form-fitting elements in engagement with one another is ensured with the spring element resting on the inclined surface. The interlocking elements are expediently formed from grooves and elevations of prismatic shape.
In der nachfolgenden Beschreibung und den Zeichnungen sind Aus¬ führungsbeispiele der Erfindung dargestellt, und zwar zeigen:In the following description and the drawings, exemplary embodiments of the invention are shown, namely:
Fig.1 einen Teil eines Trockenrasierapparates mit abgenommenem Scherkopf in Perspektive;1 shows a part of a dry shaving apparatus with the shaving head removed in perspective;
Fig. 2 einen Querschnitt durch einen schwenkbar gelagerten Scherkopf und den oberen Teil des Trockenrasiererge¬ häuses;2 shows a cross section through a pivotably mounted shaving head and the upper part of the dry shaver housing;
Fig. 3 einen Längsschnitt durch einen am Gehäuse des Trocken¬ rasierapparates schwenkbar gelagerten Scherkopf;3 shows a longitudinal section through a shaving head which is pivotably mounted on the housing of the dry shaving apparatus;
Fig.4 einen Querschnitt durch einen auf dem Gehäuse des Trockenrasierapparates angeordneten Scherkopfrahmen;4 shows a cross section through a shaving head frame arranged on the housing of the dry shaving apparatus;
Fig. 5 einen Schnitt A-A nach Fig. 4 durch ein Antriebselement mit Federlement.Fig. 5 shows a section A-A of FIG. 4 by a drive element with a spring element.
In Fig. 1 ist der obere Teil eines Trockenrasierers, dessen Ge¬ häuse mit 1, der Ein- und Ausschalter mit 2, der Langhaarschneider mit 3, die Gehäuseoberseite mit 4, der aus der Öffnung 5 in der Gehäuseoberseite 4 herausragende Antriebsstift mit 6, die in Ver¬ längerung der Gehäuseschmalseiten 7 und 8 verlaufenden Schwenkarme mit 9 und 10 und der mittels Lagerzapfen 11 in in den Schwenkarmen vorgesehenen Lagerbohrungen 12 schwenkbar gelagerte Scherkopf mit SK bezeichnet ist.In Fig. 1 is the upper part of a dry shaver, the housing with 1, the on and off switch with 2, the long hair trimmer with 3, the top of the housing with 4, which comes out of the opening 5 in the The top 4 of the housing has projecting drive pin 6, the swivel arms 9 and 10 extending the narrow housing sides 7 and 8 and the shaving head 12 pivotally mounted by means of bearing pins 11 in bearing holes 12 provided in the swivel arms with SK.
Der Scherkopf SK zeigt ein Paar von parallel zueinander verlaufen¬ den Scherköpfen 14 und 15, die durch zwei Untermesser 16 und 17 sowie durch diese Untermesser gewölbt umgebende Scherfolie 18 ge¬ bildet sind. Die Untermesser 16 und 17 sind auf einem gemeinsamen Kupplungselement 19 federnd - siehe Fig. 2 - gelagert. Das Kupp¬ lungselement 19 ist mit einem Antriebselement 47, das Bestandteil einer im Scherkopfrahmen 21 gelagerten Schwingbrücke - siehe Fig. 2 und 3 - ist, gekoppelt. Zwecks Übertragung der Antriebsbewegung vom Antriebsstift 6 auf die Schwingbrücke ist diese mit zwei Quer¬ rippen 22 und 23 versehen, in deren Zwischenraum 24 der.Antriebs¬ stift 6 eingreift. Die Querrippen 22 und 23 der Schwingbrücke os¬ zillieren bei eingeschaltetem Antrieb innerhalb der in der Boden¬ platte 25 des Scherkopfrahmens 21 vorgesehenen Öffnung 26.The shaving head SK shows a pair of shaving heads 14 and 15 running parallel to one another, which are formed by two lower knives 16 and 17 and by shaving foil 18 which is curved around these lower knives. The lower knives 16 and 17 are resiliently mounted on a common coupling element 19 - see FIG. 2. The coupling element 19 is coupled to a drive element 47, which is part of a swing bridge mounted in the shaving head frame 21 - see FIGS. 2 and 3. For the purpose of transmitting the drive movement from the drive pin 6 to the oscillating bridge, the latter is provided with two transverse ribs 22 and 23, in the intermediate space 24 of which the . Drive pin 6 engages. The transverse ribs 22 and 23 of the swing bridge oscillate when the drive is switched on within the opening 26 provided in the base plate 25 of the shaving head frame 21.
Fig. 2 zeigt einen Querschnitt durch den schwenkbar gelagerten Scherkopf SK nach Fig. 1. Die beiden Untermesser 16, 17 liegen je¬ weils an einer im Scherkopfrahmen 21 gewölbt eingespannten Scher¬ folie 18, die auch einteilig ausgebildet sein kann, an. Das Kupp¬ lungselement 19 besteht aus einer Bodenplatte 27 mit zwei ange¬ formten, topfartigen Behältern 28, 29 und diese topfartig umgeben¬ den Behälterdeckeln 30, 31 sowie den innerhalb der Behälter 28, 29 und den Behälterdeckeln 30, 31 jeweils angeordneten Führungsbolzen 32, 33, einschließlich der diese umgebenden Druckfedern 34, 35. Der Führungsbolzen 32 ist in dem Behälter 28 und der Führungs¬ bolzen 33 in dem Behälter 29 befestigt. Um eine vertikale Führung der jeweils mit den Behälterdeckeln 30, 31 gekoppelten Untermesser 16, 17 gegen den Druck der jeweiligen Druckfeder 34, 35 zu gewähr- leisten, ist in dem jeweiligen Behälterdeckel 30, 31 eine Gleit¬ bohrung 40, 41 für den jeweiligen Führungsbolzen 32, 33 einge¬ formt. Mittels einer die vertikale Auf- und Abbewegung der Behäl¬ terdeckel 30, 31 ermöglichenden Klippverbindung - siehe Fig. 3 - sind die Behälterdeckel 30, 31 mit den Behältern 28, 29 gekoppelt. Die Untermesser 16, 17 sind jeweils mittels eines Kupplungsstückes 36, 37 und quer zur Längserstreckung der Untermesser 16, 17 ange¬ ordneten Gelenkbolzen 38, 39 an den jeweiligen oberen Enden der Behälterdeckel 30, 31 schwenkbar angelenkt - siehe Fig. 2 und 3.FIG. 2 shows a cross section through the pivotably mounted shaving head SK according to FIG. 1. The two lower knives 16, 17 each rest against a shaving foil 18 which is arched in the shaving head frame 21 and which can also be formed in one piece. The coupling element 19 consists of a base plate 27 with two molded-on, pot-like containers 28, 29 and this surrounds the pot-like container covers 30, 31 as well as the guide bolts 32 arranged inside the containers 28, 29 and the container covers 30, 31. 33, including the compression springs 34, 35 surrounding them. The guide pin 32 is fastened in the container 28 and the guide pin 33 in the container 29. In order to ensure vertical guidance of the lower knives 16, 17, each coupled to the container lids 30, 31, against the pressure of the respective compression spring 34, 35 afford, a sliding bore 40, 41 for the respective guide pin 32, 33 is formed in the respective container lid 30, 31. The container covers 30, 31 are coupled to the containers 28, 29 by means of a clip connection which enables the vertical up and down movement of the container lids 30, 31 - see FIG. 3. The lower knives 16, 17 are each pivotably articulated on the respective upper ends of the container lids 30, 31 by means of a coupling piece 36, 37 and articulated bolts 38, 39 arranged transversely to the longitudinal extent of the lower knives 16, 17 - see FIGS. 2 and 3.
In der Bodenplatte 27 des Kupplungselementes 19 ist mittig zu den beiden Führungsbolzen 32, 33 ein Lagerbolzen 42 befestigt, der aus der Bodenplatte 27 herausragend sich in Richtung des Gehäuses 1 erstreckt. An dem der Bodenplatte 27 abgewandten Ende des Lager¬ bolzens 42 ist dieser mit einer umlaufenden, prismatischen Nut 43 versehen, deren Schrägflächen 44, 45 eine unterschiedliche Stei¬ gung aufweisen, wobei die zum Ende des Lagerbolzens 42 verlaufende Schrägfläche 45 mit einer geringeren Steigung versehen ist als die entgegengesetzte Schrägfläche 44.In the base plate 27 of the coupling element 19, a bearing bolt 42 is fastened in the center of the two guide bolts 32, 33 and extends from the base plate 27 in the direction of the housing 1. At the end of the bearing bolt 42 facing away from the base plate 27, the latter is provided with a circumferential, prismatic groove 43, the inclined surfaces 44, 45 of which have a different pitch, the inclined surface 45 running towards the end of the bearing bolt 42 being provided with a smaller pitch is as the opposite inclined surface 44.
Der Lagerbolzen 42 durchragt eine in der Deckplatte 46 des An¬ triebselementes 47 vorgesehene Lagerbohrung 48. In Verlängerung der Lagerbohrung 48 sind an der dem Gehäuse 1 zugewandten Seite der Deckplatte 46 zwei Federelemente 49, 50 in Form von Feder¬ beinen mit angeformten Rastnocken 51, 52 angeformt. Durch Anlage der Rastnocken 51, 52 der Federelemente 49, 50 an der Schrägfläche 45 des Lagerbolzens 42 ist eine bewegungsfreie Anlage der Boden¬ platte 27 des Kupplungselementes 19 an der Deckplatte 46 des An¬ triebselementes 47 gewährleistet, da die auf die Schrägfläche 45 einwirkende, aus der Federkraft der Federelemente 49, 50 resul¬ tierende Kraft das Kupplungselement 19 zum Antriebselement 47 zieht. Um einerseits die Anlage von Kupplungselement 19 und Antriebsele¬ ment 47 weiter zu verbessern, sind an der Deckplatte 46 und an der Bodenplatte 27 jeweils wenigstens zwei in Eingriff bringbare Form¬ schlußelemente 53 bis 56 an- bzw. eingeformt. Diese Formschlußele¬ mente bestehen vorzugsweise aus prismatisch angeformten Erhebungen 53, 54, die in entsprechend geformte prismatische Nuten 55, 56 eingreifen. Zusätzlich zur optimierten Anlage vom Kupplungselement 19 und Antriebselement 47 dienen die im Eingriff befindlichen Formschlußelemente 53 bis 56 einer definierten Ausrichtung der auf dem Kupplungselement 19 federnd angeordneten Untermesser 16 und 17 in Schwingungsrichtung.The bearing pin 42 extends through a bearing bore 48 provided in the cover plate 46 of the drive element 47. In the extension of the bearing bore 48, two spring elements 49, 50 in the form of spring legs with molded-on locking cams 51, are formed on the side of the cover plate 46 facing the housing 1. 52 molded. By engaging the locking cams 51, 52 of the spring elements 49, 50 on the inclined surface 45 of the bearing bolt 42, a movement-free contact of the bottom plate 27 of the coupling element 19 on the cover plate 46 of the drive element 47 is ensured, since the one acting on the inclined surface 45 from the spring force of the spring elements 49, 50 resulting force pulls the coupling element 19 to the drive element 47. In order to further improve the contact of coupling element 19 and drive element 47, on the one hand, at least two interlocking elements 53 to 56, which can be brought into engagement, are formed or formed on the cover plate 46 and on the base plate 27. These form-locking elements preferably consist of prismatic projections 53, 54 which engage in appropriately shaped prismatic grooves 55, 56. In addition to the optimized installation of the coupling element 19 and drive element 47, the interlocking form-locking elements 53 to 56 serve to define the defined orientation of the lower blades 16 and 17, which are resiliently arranged on the coupling element 19, in the direction of vibration.
Nach einer Ausführungsform, die sich aus der Darstellung nach Fig. 2 unter Einbeziehung der Darstellung nach Fig. 3 ergibt, sind am Kupplungselement 19 und am Antriebselement 47 jeweils vier in Ein¬ griff befindliche Formschlußelemente 53 bis 60 derart angeordnet, daß die gemeinsame Mittenachse M von Lagerbolzen 42 und Lagerboh¬ rung 48 durch den Schnittpunkt, der sich rechtwinklig schneidenden Erstreckungsrichtungen der Formschlußelemente 53 bis 60 verläuft. Bei einer auf die vertikale Erstreckung, das heißt die Höhe der Formschlußelemente 53, 54, 57, 58 angepaßten Erstreckungslänge der Schrägfläche 45, ist ein Wechsel der im Eingriff befindlichen Formschlußelemente untereinander bei an der Schrägfläche 45 über den Rastnocken 51, 52 anliegenden Federelementen 49, 50 durchführ¬ bar. Ein derartiger Wechsel, zum Beispiel eine Verdrehung des Kupplungselementes um 90°, bewirkt eine entsprechende Querstellung der Untermesser 16, 17 in Bezug auf deren Schwingungsrichtung und ermöglicht eine leichte Reinigung der Untermesser 16, 17 im mit dem Antriebselement 47 gekoppelten Zustand sowie des Innenraumes des Scherkopfrahmens 21 bei abgenommener Scherfolie 18.According to one embodiment, which results from the illustration according to FIG. 2 including the illustration according to FIG. 3, four interlocking elements 53 to 60 in engagement are arranged on the coupling element 19 and on the drive element 47 such that the common central axis M of bearing bolt 42 and bearing bore 48 through the intersection which extends at right angles intersecting directions of extension of the form-locking elements 53 to 60. Given an extension length of the inclined surface 45 that is adapted to the vertical extension, that is to say the height of the form-locking elements 53, 54, 57, 58, the engaged form-locking elements are mutually interchangeable with spring elements 49 resting on the inclined surface 45 via the locking cams 51, 52. 50 feasible. Such a change, for example a rotation of the coupling element by 90 °, brings about a corresponding transverse position of the lower knives 16, 17 with respect to their direction of vibration and enables easy cleaning of the lower knives 16, 17 in the state coupled to the drive element 47 and of the interior of the shaving head frame 21 with the shaving foil removed 18.
Das Antriebselement 47 nach Fig. 2 ist Bestandteil einer in dem schwenkbar gelagerten Scherkopf SK - siehe Fig. 1 - oszillierend angeordneten Schwingbrücke, die anhand von Fig. 3 näher beschrie¬ ben wird. In Fig. 3 ist entsprechend der Fig. 1 das Gehäuse mit 1, die am Gehäuse angeformten Schwenkarme mit 9 und 10, der aus der ÖffnungThe drive element 47 according to FIG. 2 is part of an oscillating bridge arranged in the pivotably mounted shaving head SK - see FIG. 1, which is described in more detail with reference to FIG. 3. In Fig. 3 is corresponding to FIG. 1, the housing with 1, the molded arms on the housing with 9 and 10, the out of the opening
5 in der Gehäuseoberseite 4 herausragende, in den Zwischenraum 24 der an der mit 61 bezeichneten Schwingbrücke vorgesehenen Quer¬ rippen 22, 23 hineinragende Antriebsstift mit 6 bezeichnet. Der Scherkopfrahmen 21, von dem in Fig. 3 die Stirnseitenwände 62, 63 und die in den Innenraum hineinragende Innenwand 64 ersichtlich sind, ist mittels einer nicht näher dargestellten Gelenkverbindung bei G, G, an den Schwenkarmen 9 und 10 schwenkbar gelagert. Die den Scherkopfrahmen 21 schließende Bodenplatte 27 ist U-förmig ausgebildet. Die Schenkel 66, 67 der Bodenplatte 27 erstrecken sich parallel zu den Stirnseitenwänden 62, 63 des Scherkopf¬ rahmens. Auf den oberen Enden der Schenkel 66, 67 ist die aus zwei herabhängenden Federarmen 68, 69 und einer die Federarme 68, 69 verbindenden Platte 70 bestehende Schwingbrücke 61 befestigt. Die Bodenplatte 27 weist eine Öffnung 26 auf, in die die Querrippen 22, 23 der Schwingbrücke 61 zwecks Koppelung mit dem Antriebsstift5 in the upper side 4 of the housing projecting drive pin projecting into the intermediate space 24 of the transverse ribs 22, 23 provided on the swing bridge designated by 61 is designated by 6. The shaving head frame 21, of which the end walls 62, 63 and the inner wall 64 projecting into the interior can be seen in FIG. 3, is pivotably mounted on the swivel arms 9 and 10 by means of an articulated connection (not shown) at G, G. The bottom plate 27 closing the shaving head frame 21 is U-shaped. The legs 66, 67 of the base plate 27 extend parallel to the end walls 62, 63 of the shaving head frame. On the upper ends of the legs 66, 67, the swing bridge 61 consisting of two hanging spring arms 68, 69 and a plate 70 connecting the spring arms 68 is fastened. The base plate 27 has an opening 26 into which the transverse ribs 22, 23 of the swing bridge 61 for the purpose of coupling with the drive pin
6 hineinragen. Das der Koppelung mit dem Kupplungselement 19 dienende Antriebselement 47 ist in die Bodenplatte 70 eingeformt und somit Bestandteil der Schwingbrücke 61. Die Formschlußelemente 57 bis 60 befinden sich in Eingriff aufgrund des gekoppelten Zu- standes vom Kuppluπgselement 19 und Antriebselement 47. Die Dich¬ tung 71 ist einerseits am Antriebselement 47 und andererseits an der Innenwand 64 des Scherkopfrahmens befestigt.6 protrude. The drive element 47 serving for coupling with the coupling element 19 is molded into the base plate 70 and is therefore part of the swing bridge 61. The positive locking elements 57 to 60 are in engagement due to the coupled state of the coupling element 19 and the drive element 47. The seal 71 is attached on the one hand to the drive element 47 and on the other hand to the inner wall 64 of the shaving head frame.
Bei der Ausführungsform nach Fig. 4 ist der Scherkopf SK unbeweg¬ lich auf dem Gehäuse 1 des Trockenrasierapparates angeordnet. Die konstruktive Ausgestaltung des Kupplungselementes 19 sowie der mittels der Kupplungsstücke 36, 37 angelenkten Untermesser 16 und 17 entspricht der unter Fig. 2 im einzelnen beschriebenen Ausge¬ staltung. Das oszillierend angetriebene Antriebselement 47 ragt mit seinem der Koppelung mit dem Kupplungselement 19 dienenden Ende durch die in der Gehäuseoberseite 4 vorgesehene Öffnung 5 in den Innenraum des Scherkopfes SK hinein. Das Antriebselement 47 besteht aus einem Antriebsstift mit einer auf dessen Mittenachse M angeordneten Lagerbohrung 48 in Form einer Sacklochbohrung und einer in der Lagerbohrungswandung 72 außenseitig eingelassenen Nut 73 zwecks Aufnahme eines Federelementes 49. Der Verlauf der Nut 73 in der Lagerbohrungswandung 72 ist derart gestaltet, daß diese den Innenraum der Lagerbohrung 48 partiell schneidet, wie dies durch den in Fig. 4 angegebenen Schnitt A-A in Fig. 5 unter Angabe der Bezugszeichen aus Fig. 4 näher veranschaul cht ist. Das Federele¬ ment 49 besteht bei dieser Ausführungsform aus einem im wesent¬ lichen U-förmig gebogenen Bügel mit einem zur Lagerbohrung 48 ge¬ krümmten Bogenteil 74 zwecks partiellen Eingriff in die Lagerboh¬ rung 48. Der Abstand der Nut 73 zur Deckplatte 46 des Antriebsele¬ mentes 47 ist derart bemessen, daß bei einem in Eingriff mit der Lagerbohrung 48 befindlichen Lagerbolzen 42 des Kupplungselementes 19 das Federelement 49 zur Anlage an die Schrägfläche 45 der am Lagerbolzen 42 vorgesehenen, prismatisch ausgebildeten Nut 43 ge¬ langt, um mittels der von dem Federelement 49 ausgehenden Feder¬ wirkung die Koppelung und sichere Anlage vom Kupplungselement 19 und Antriebselement 47 zu bewerkstelligen. Nach Abnahme des Scher¬ kopfrahmens 21 mit der in diesem eingespannten Scherfolie 18 vom Gehäuse 1 kann das Kupplungselement 19 mit den auf diesen federnd gelagerten Untermesern 16 und 17 gegen den Federdruck des Feder¬ elementes 49 leicht vom Antriebselement 47 abgezogen werden. Der Lagerbolzen 42 ist endseitig kegelförmig ausgebildet, um dessen Einführung in die Lagerbohrung zu vereinfachen und darüber hinaus das Aufweiten des Federelementes 49 beim Zusammenstecken zu er¬ leichtern. In the embodiment according to FIG. 4, the shaving head SK is arranged immovably on the housing 1 of the dry shaving apparatus. The structural design of the coupling element 19 and the lower knives 16 and 17 articulated by means of the coupling pieces 36, 37 corresponds to the embodiment described in detail in FIG. 2. The end of the oscillatingly driven drive element 47, which is used for coupling to the coupling element 19, projects through the opening 5 provided in the upper side 4 of the housing the interior of the shaving head SK. The drive element 47 consists of a drive pin with a bearing bore 48 arranged on its central axis M in the form of a blind hole and a groove 73 recessed on the outside in the bearing bore wall 72 for receiving a spring element 49. The course of the groove 73 in the bearing bore wall 72 is designed such that this partially intersects the interior of the bearing bore 48, as is illustrated in more detail by the section AA in FIG. 4 in FIG. 5 with the reference numerals from FIG. 4. In this embodiment, the spring element 49 consists of an essentially U-shaped bow with a curved part 74 curved toward the bearing bore 48 for the purpose of partial engagement in the bearing bore 48. The distance of the groove 73 from the cover plate 46 of the drive element ¬ mentes 47 is dimensioned such that when a bearing pin 42 of the coupling element 19 is in engagement with the bearing bore 48, the spring element 49 comes into contact with the inclined surface 45 of the prismatic groove 43 provided on the bearing pin 42, in order to use the Spring element 49 outgoing spring effect to accomplish the coupling and secure contact of the coupling element 19 and drive element 47. After removal of the shaving head frame 21 with the shaving foil 18 clamped in it from the housing 1, the coupling element 19 with the lower knives 16 and 17 resiliently mounted on the latter can be easily removed from the drive element 47 against the spring pressure of the spring element 49. The bearing pin 42 is tapered at the end in order to simplify its insertion into the bearing bore and also to facilitate the expansion of the spring element 49 when it is plugged together.

Claims

Patentansprüche Claims
1. Trockenrasierapparat mit einem Paar von parallel zueinander verlaufenden, länglichen Scherköpfen (14, 15), deren Unter¬ messer (16, 17) auf einem gemeinsamen Kupplungselement (19) federnd angeordnet sind, dadurch gekennzeichnet, daß das Kupp¬ lungselement (19) mittels eines in eine Lagerbohrung (48) an einem Antriebselement (47) eingreifenden Lagerbolzen (42) mit dem Antriebselement (47) des elektrischen Antriebes lösbar ge¬ koppelt ist, daß das Kupplungselement (19) mittels wenigstens einem in eine am Lagerbolzen (42) vorgesehene prismatische Nut (43) einrastenden Federelement (49, 50) in Anlage an dem An¬ triebselement (47) gehalten ist und daß die aus Federelement (49, 50) und prismatischer Nut (43) bestehende Verriegelung mittels der an dem Federelement (49, 50) anliegenden Schräg¬ fläche (45) der prismatischen Nut (43) gegen den Druck des Federelementes (49, 50) entriegelbar ist.1. A dry shaving apparatus with a pair of parallel, elongated shaving heads (14, 15), the lower knives (16, 17) of which are resiliently arranged on a common coupling element (19), characterized in that the coupling element (19) by means of a bearing pin (42) engaging in a bearing bore (48) on a drive element (47) with the drive element (47) of the electric drive, the coupling element (19) is detachably coupled by means of at least one in one on the bearing pin (42) The prismatic groove (43) provided engaging spring element (49, 50) is held in contact with the drive element (47) and that the locking element consisting of spring element (49, 50) and prismatic groove (43) is locked by means of the spring element (49 , 50) of the inclined surface (45) of the prismatic groove (43) can be unlocked against the pressure of the spring element (49, 50).
2. Trockenrasierapparat nach Anspruch 1, dadurch gekennzeichnet, daß die Schrägflächen (44, 45) der prismatischen Nut (43) am Lagerbolzen (42) mit einer unterschiedlichen Steigung versehen sind und die Schrägfläche (45) geringerer Steigung im ge¬ koppelten Zustand von Kupplungselement (19) und Antriebs¬ element (47) von dem Federelement (49, 50) beaufschlagt ist.2. Dry shaver according to claim 1, characterized in that the inclined surfaces (44, 45) of the prismatic groove (43) on the bearing pin (42) are provided with a different pitch and the inclined surface (45) with a smaller pitch in the coupled state of the coupling element (19) and drive element (47) is acted upon by the spring element (49, 50).
3. Trockenrasierapparat nach Anspruch 1, dadurch gekennzeichnet, daß die Lagerbohrung (48) in einen im Antriebselement (47) vorgesehenen Hohlraum einmündet und daß als Federelement (49, 50) wenigstens ein in den Hohlraum hineinragender Federarm in Verlängerung der Lagerbohrung (48) am Antriebselement (47) an¬ geformt ist. 3. Dry shaving apparatus according to claim 1, characterized in that the bearing bore (48) opens into a cavity provided in the drive element (47) and that as a spring element (49, 50) at least one spring arm protruding into the cavity in extension of the bearing bore (48) on Drive element (47) is integrally formed.
4. Trockenrasierapparat nach Anspruch 3, dadurch gekennzeichnet, daß das Antriebselement (47) Bestandteil einer im Scherkopf- rahmen (21) des Trockenrasierapparates angeordneten Schwing¬ brücke (61) ist.4. Dry shaving apparatus according to claim 3, characterized in that the drive element (47) is part of a Schwing¬ bridge (61) arranged in the shaving head frame (21) of the dry shaving apparatus.
5. Trockenrasierapparat nach Anspruch 3, dadurch gekennzeichnet, daß das Antriebselement (47) Bestandteil einer im Gehäuse (1) des Trockenrasierapparates angeordneten Schwingbrücke (61) ist.5. A dry shaver according to claim 3, characterized in that the drive element (47) is part of a swing bridge (61) arranged in the housing (1) of the dry shaver.
6. Trockenrasierapparat nach Anspruch 1, dadurch gekennzeichnet, daß das Antriebselement (47) aus einem oszillierenden An¬ triebsstift mit einer auf dessen Mittenachse (M) angeordneten Lagerbohrung (48) und einer in der Lagerbohrungwandung (72) außenseitig eingelassenen Nut (73) zur Aufnahme des Federele¬ mentes (49) besteht, wobei die Nut (73) den Innenraum der Lagerbohrung (48) partiell schneidet.6. A dry shaver according to claim 1, characterized in that the drive element (47) consists of an oscillating drive pin with a bearing bore (48) arranged on its center axis (M) and a groove (73) recessed in the outside of the bearing bore wall (72) The spring element (49) is received, the groove (73) partially cutting the interior of the bearing bore (48).
7. Trockenrasierapparat nach Anspruch 6, dadurch gekennzeichnet, daß das Federelement (49) aus einem der Form der Nut (73) an¬ gepaßten, den Inneraum der Lagerbohrung (48) partiell durch¬ setzenden Federbügel besteht.7. A dry shaver according to claim 6, characterized in that the spring element (49) from one of the shape of the groove (73) an¬, the inner space of the bearing bore (48) partially penetrating spring clip consists.
8. Trockenrasierapparat nach Anspruch 1, dadurch gekennzeichnet, daß am Kupplungselement (19) und an dem Antriebselement (47) in Eingriff bringbare, die Ausrichtung der Untermesser (16, 17) bestimmende Formschlußelemente (53 bis 56; 57 bis 60) an¬ geordnet sind.8. A dry shaver according to claim 1, characterized in that on the coupling element (19) and on the drive element (47) can be brought into engagement, the alignment of the lower knives (16, 17) determining positive locking elements (53 to 56; 57 to 60) an¬ arranged are.
9. Trockenrasierapparat nach Anspruch 8, dadurch gekennzeichnet, daß am Kupplungselement (19) und am Antriebselement (47) je¬ weils zwei parallel zur Schwingbewegung der Untermesser (16, 17) verlaufende Formschlußelemente (57, 58, 59, 60) angeordnet sind. 9. A dry shaver according to claim 8, characterized in that the coupling element (19) and the drive element (47) each have two parallel locking elements (57, 58, 59, 60) running parallel to the oscillating movement of the lower knives (16, 17).
10. Trockenrasierapparat nach Anspruch 8, dadurch gekennzeichnet, daß am Kupplungselement (19) und am Antriebselement (47) je¬ weils vier Formschlußelemente (53 bis 60) derart angeordnet sind, daß die gemeinsame Mitteπachse (M) von Lagerbohrung (48) und Lagerbolzen (42) durch den Schnittpunkt der sich recht¬ winklig schneidenden Erstreckungsrichtungen der Formschlußele¬ mente (53 bis 60) verläuft.10. A dry shaver according to claim 8, characterized in that four positive locking elements (53 to 60) are arranged on the coupling element (19) and on the drive element (47) such that the common central axis (M) of the bearing bore (48) and bearing pin (42) runs through the intersection of the right-angled directions of extension of the form-locking elements (53 to 60).
11. Trockenrasierapparat nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, daß die Erstreckung der Schrägfläche (45) auf die Erstreckung der Formschlußelemente (53 bis 56; 57 bis 60) derart abgestimmt ist, daß ein Wechsel der im Eingriff befindlichen Formschlußelemente (53 bis 56; 57 bis 60) unter¬ einander bei an der Schrägfläche (45) anliegendem Federelement (49, 50) gewährleistet ist.11. Dry shaving apparatus according to one of claims 8 to 10, characterized in that the extent of the inclined surface (45) is matched to the extent of the form-locking elements (53 to 56; 57 to 60) such that a change of the form-locking elements (53 to 56; 57 to 60) with one another is ensured with the spring element (49, 50) lying against the inclined surface (45).
12. Trockenrasierapparat nach einem der Ansprüche 8 bis 11, dadurch gekennzeichnet, daß die Formschlußelemente (53 bis 60) aus Nuten und Erhebungen prismatischer Formgebung gebildet sind. 12. Dry shaving apparatus according to one of claims 8 to 11, characterized in that the positive locking elements (53 to 60) are formed from grooves and elevations of prismatic shape.
EP90910558A 1989-08-16 1990-07-21 Blade block coupling for twin-headed razors Expired - Lifetime EP0487537B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90910558T ATE95459T1 (en) 1989-08-16 1990-07-21 KNIFE BLOCK CLUTCH FOR DOUBLE HEAD RAZOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3926894 1989-08-16
DE3926894A DE3926894C1 (en) 1989-08-16 1989-08-16

Publications (2)

Publication Number Publication Date
EP0487537A1 true EP0487537A1 (en) 1992-06-03
EP0487537B1 EP0487537B1 (en) 1993-10-06

Family

ID=6387134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90910558A Expired - Lifetime EP0487537B1 (en) 1989-08-16 1990-07-21 Blade block coupling for twin-headed razors

Country Status (5)

Country Link
US (1) US5201781A (en)
EP (1) EP0487537B1 (en)
JP (1) JPH088946B2 (en)
DE (2) DE3926894C1 (en)
WO (1) WO1991002629A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US7954243B2 (en) 2004-06-21 2011-06-07 Koninklijke Philips Electronics N.V. Hair cutting apparatus
US8336211B2 (en) 2004-06-21 2012-12-25 Koninklijke Philips Electronics N.V Shaving apparatus

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DE4128220C1 (en) * 1991-08-26 1992-08-06 Braun Ag, 6000 Frankfurt, De
DE4128218C1 (en) * 1991-08-26 1992-08-06 Braun Ag, 6000 Frankfurt, De
DE4128219A1 (en) * 1991-08-26 1993-03-04 Braun Ag SHAVER
US5611145A (en) * 1991-12-20 1997-03-18 Wetzel; Matthias Dry-shaving apparatus
US5185926A (en) * 1992-02-07 1993-02-16 Remington Products, Inc. Multiple foil and cutting blade assembly for electric dry shavers
DE4303972C1 (en) * 1993-02-11 1993-10-14 Braun Ag Electric dry razor with pivoted cutting head - has cutting head frame supported by pivot screws fitting in metal bearing elements in opposing carrier arms
JPH0730972U (en) * 1993-11-17 1995-06-13 三洋電機株式会社 Reciprocating electric razor
JP3716353B2 (en) * 1995-07-31 2005-11-16 九州日立マクセル株式会社 Rotary electric razor
KR100543557B1 (en) * 1997-10-30 2007-04-25 산요덴키가부시키가이샤 Electric shaver
AU2451599A (en) * 1998-01-20 1999-08-02 Wheel Technology Ltd. Electric razor with direct contact roller-mounted blades
JP3916509B2 (en) * 2002-05-29 2007-05-16 株式会社泉精器製作所 Electric razor
DE102006010323A1 (en) * 2006-03-07 2007-09-13 Braun Gmbh Dry shaver with swiveling shaving head
EP2404715B1 (en) * 2010-07-10 2012-11-28 Braun GmbH Electrically operated shaver with replaceable cutting device
EP2875919A1 (en) * 2013-11-22 2015-05-27 Koninklijke Philips N.V. Hair cutting appliance, receptacle and connector plug
EP3300850B1 (en) * 2016-09-28 2019-10-23 Braun GmbH Electrically-driven razor

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7954243B2 (en) 2004-06-21 2011-06-07 Koninklijke Philips Electronics N.V. Hair cutting apparatus
US8336211B2 (en) 2004-06-21 2012-12-25 Koninklijke Philips Electronics N.V Shaving apparatus

Also Published As

Publication number Publication date
JPH088946B2 (en) 1996-01-31
US5201781A (en) 1993-04-13
WO1991002629A1 (en) 1991-03-07
DE3926894C1 (en) 1990-12-06
EP0487537B1 (en) 1993-10-06
JPH05500313A (en) 1993-01-28
DE59003032D1 (en) 1993-11-11

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