EP0208380B1 - Electric dry-shaver - Google Patents

Electric dry-shaver Download PDF

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Publication number
EP0208380B1
EP0208380B1 EP86201189A EP86201189A EP0208380B1 EP 0208380 B1 EP0208380 B1 EP 0208380B1 EP 86201189 A EP86201189 A EP 86201189A EP 86201189 A EP86201189 A EP 86201189A EP 0208380 B1 EP0208380 B1 EP 0208380B1
Authority
EP
European Patent Office
Prior art keywords
motor
bridge
electric motor
shaving
drive shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86201189A
Other languages
German (de)
French (fr)
Other versions
EP0208380A3 (en
EP0208380A2 (en
Inventor
Herbert Piber
Günther Schmid
Johann Schuhfleck
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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 Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0208380A2 publication Critical patent/EP0208380A2/en
Publication of EP0208380A3 publication Critical patent/EP0208380A3/en
Application granted granted Critical
Publication of EP0208380B1 publication Critical patent/EP0208380B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—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

Definitions

  • the invention relates to a dry shaving apparatus with a shaving head which can be placed on a basic device and has a longitudinal and transverse extension, which is held in place with two opposite detents, each of which interacts with the transverse walls of the shaving head and can be released against a spring action, and which carries at least one upper knife with which a reciprocating in the longitudinal extension of the shaving head interacting lower knife, which is driven by the output-side part of a swing bridge arranged in the basic device, which in turn is driven by an eccentric from the drive shaft of an essentially cylindrical motor housing having an electric motor, which with the motor housing from of the swing bridge is technologically connected to a stationary base part thereof, its drive shaft being passed through an opening provided in the base part to the driven part of the swing bridge.
  • the invention has set itself the goal of designing a dry shaver of the type mentioned at the outset in such a way that it has as few individual parts as possible and its assembly is as simple as possible so that it can also be carried out fully mechanized if necessary.
  • a U-shaped frame-like support is connected to the base part of the swing bridge, the longitudinal webs of which run parallel to the drive shaft of the electric motor and project from the swing bridge pointing away from the base part of the same, that the electric motor is inserted in this support, the motor housing is supported on the base part with the end facing the drive shaft and on the crossbar of the carrier with the end facing away from the drive shaft and is partially circumferentially encompassed by the two longitudinal webs of the carrier to form engine supports that the two catches for holding the shaving head in the region of the free ends of two resiliently pivotable tongues are provided, that the tongues are connected to the base part of the swing bridge, that at least a support is provided for the shaving head on the base part of the swing bridge,
  • the shaving head is held on the plate that forms a support for it with two opposing detents that can be released against a spring action, which are designed as hooks in the area of the free ends of two resiliently pivotable tongues, which in turn are connected to the plate and to one form an integral part.
  • the oscillating armature motor which interacts directly with the lower blade of the shaving head, is fastened to the plate with screws.
  • This dry shaving apparatus thus has no oscillating bridge, so that the plate only serves to hold the shaving head and fasten the oscillating armature motor, no precautions being taken to ensure that the oscillating armature motor can be connected to the plate without further fastening means.
  • a one-piece component fulfills a total of three functions, namely the mounting and positioning of the electric motor, the formation of the swing bridge and the mounting of the shaving head.
  • the electric motor on its side facing away from the U-shaped frame-like carrier is loaded by at least one spring element which presses it towards the carrier.
  • the holder of the electric motor is very well stabilized, particularly in the case of shock loads.
  • Rubber springs, rubber strips, foam strips and the like, which can be attached to the housing of the basic device, for example, are suitable as spring elements.
  • the resiliently pivotable tongues for example, as Whole elastic can be formed. It has proven to be very advantageous, however, if the tongues are rigid in themselves and are connected to the base part of the oscillating bridge by means of two coaxial cantilevered torsion springs which laterally project from the end facing away from the latching free end. Such a division into resilient areas and rigid areas of the tongues means that on the one hand they can be pivoted well resiliently and on the other hand securely hold the shaving head on the base part of the swing bridge.
  • the entire one-piece component can be made of a relatively high rigidity plastic material, so that it is stable as a whole and ensures proper mounting of the shaving head and the electric motor, the spring action for the catches being obtained by dimensioning the rods.
  • 1 and 2 denotes a basic device of a dry shaving apparatus, the housing of which is composed of two housing shells 2 and 3.
  • a shaving head 4 can be placed on this basic device 1, which carries an upper knife 6 on a shaving head frame 5, with which a lower knife 7 which can be driven back and forth in the longitudinal extension of the shaving head 4 cooperates.
  • the upper knife 6 is designed as a curved screen shear film and the lower knife 7 as a lamellar knife.
  • the upper knife and the lower knife can also be designed in a known manner as co-operating comb knives.
  • the basic device 1 includes an electric motor 10, which can be fed by accumulators 8 and 9, a swing bridge 11 and further individual parts, such as an on / off switch 12, which together with the two accumulators 8 and 9 and a charging circuit for the same, but not in more detail here designated electrical switching elements is arranged on a circuit board 13.
  • the oscillating bridge 11 constructed in the usual way has a stationary base part 14 which is held between the housing shells 2 and 3, for which purpose its border adapted to the interior of the housing and carrying a sealing ring 15 engages with the sealing ring 15 in corresponding grooves 16 on the housing shells 2 and 3 .
  • the base part 14 is connected via film hinges 17 and 18 to the output side part 19 of the swing bridge 11, which in turn can be driven back and forth.
  • This part 19 is driven by the drive shaft 20 of the electric motor 10 via an eccentric 21 placed on the drive shaft 20, the eccentric pin 22 of which engages in a slot 23 provided on the part 19.
  • the electric motor 10 which has an essentially cylindrical motor housing, is connected to the base part 14 of the swing bridge 11 in such a way that its motor housing points away from the swing bridge 11, its drive shaft 20 through an opening 24 provided in the base part 14 to the output-side part 19 of the swing bridge 11 is passed through.
  • the power transmission from the swing bridge 11 to the lower knife 7 takes place via a drive arm 25 provided on the output-side part 19 thereof, which engages in a fork-shaped extension 26 provided on the lower knife 7.
  • the shaving head 4 resting on the base part 14 of the swing bridge 11 provided with supports 27 and 28 is provided with two mutually opposite, each with the transverse walls 29 and 30 of the shaving head frame 5 of the shaving head 4, releasable against a spring action, at the free end of two tongues 31 and 32 provided detents 33 and 34 held.
  • the catches 33 and 34 are formed by hook-shaped projections which engage in corresponding openings in the transverse walls 29 and 30 of the shaving head frame 5.
  • the catches provided on the free ends of the tongues 29 and 30 it would also be possible for the catches provided on the free ends of the tongues 29 and 30 to be formed by openings into which hooks provided on the transverse walls 29 and 30 of the shaving head frame 5 engage.
  • the supports 27 and 28 for the shaving head 4 it should be noted that instead of the two strip-shaped supports 27 and 28 provided here, four individual supports could also be provided, or the base part 14 itself could also serve as a support for the shaving head 4, if the shaving head frame 5 of the same is designed to reach this base part 14.
  • the base part 14 of the swing bridge 11 is connected to a U-shaped frame-like support 35, the two longitudinal webs 36 and 37 of which run parallel to the drive shaft 20 of the electric motor 10 and project from the swing bridge 11 pointing away from the base part 14 thereof.
  • the electric motor 10 is inserted into this carrier 35, its motor housing being supported on the base part 14 with the end face 38 facing the drive shaft 20 and on the transverse web 40 of the carrier 35 with the end face 39 facing away from the drive shaft 20 and by the two longitudinal webs 36 and 37 of the carrier 35 for forming motor mounts is partially partially circumferentially encompassed.
  • These two motor supports can be clearly seen in particular in FIG. 2.
  • the essentially cylindrical motor housing has two circular-arc-shaped circumferential sections 41 and 42 and two mutually opposite, segmentally offset flat side walls 43 and 44 which run in the direction of the drive shaft 20, as is common in such electric motors.
  • the longitudinal web 36 for the partial circumferential encirclement of the motor housing has two adjoining sections 45 and 46, of which the section 45 is designed in a circular arc and the section 46 is flat, the motor housing with its circular arc-shaped peripheral section 42 being supported on the circular section 45 and with its side wall 43 abuts the flat section 46 of this longitudinal web 36.
  • the other longitudinal web 37 of the carrier 35 is designed such that it only has an arcuate section 47 on which the motor housing is also supported with its circular arcuate section 42. If desired, this longitudinal web 37 could of course also have an additional flat section against which the side wall 44 of the motor housing could then rest.
  • the provision of such flat sections on the longitudinal webs 36 and 37 is not absolutely necessary, but in the case of a motor housing which has side walls 43 and 44, it offers the advantage of a torsion-proof mounting of the electric motor 10. In this way, it forms the base part 14 of the oscillating bridge 11 connected U-shaped frame-like carrier 35 a secure holder for the electric motor 10, which positions it perfectly in its position in relation to the swing bridge 11.
  • the tongues 31 and 32 carrying the detents 33 and 34 and the shaving head supports 27 and 28 are also connected to the base part 14 of the swing bridge 11.
  • the swing bridge 11 together with the carrier 35, the tongues 31 and 32 and the shaving head supports 27 and 28 form an integral part which can be produced very easily from plastic.
  • This one-piece part thus fulfills several functions, namely the mounting of the electric motor 10, the releasable mounting of the shaving head 4 and the formation of a swing bridge 11 for converting the rotating drive movement of the electric motor 10 into a reciprocating drive movement for the lower knife 7 of the shaving head 4.
  • the carrier 35 formed by the two longitudinal webs 36 and 37 and the transverse web 40 is designed such that its side facing away from the electric motor 10 is supported on the housing, here the housing shell 2, of the basic device 1.
  • the holder of the electric motor 10 is particularly stable since the carrier 35 itself is supported.
  • a mutually corresponding profiling, as can be seen in FIG. 2, on the one hand the housing shell 2 and on the other hand the two longitudinal webs 36 and 37 and the transverse web 40 also secure the position of the carrier 35.
  • the electric motor 10 is loaded on its side facing away from the carrier 35 by two spring elements 48 and 49 which press it towards the carrier 35.
  • these two spring elements 48 and 49 are formed by rubber strips which are supported on the housing, here the housing shell 3, of the basic device 1.
  • the two rubber strips are combined by two webs, of which a web 50 is visible in FIG. 2, to form a frame which can be easily placed on the electric motor 10 when the dry shaving apparatus is being installed.
  • the two rubber strips also form a spacing of the two accumulators 8 and 9 from the electric motor 10.
  • other designs for such spring elements would also be possible, such as, for example, rubber buffers or foam strips and the like.
  • the motor housing of the electric motor 10 has on each of its two end faces 38 and 39 a shoulder 51 and 52 which is coaxial with the drive shaft 20 of the electric motor 10.
  • these approaches 51 and 52 can also be used to hold and position the electric motor 10.
  • the opening 24 provided in the base part 14, through which the drive shaft 20 of the electric motor 10 is guided to the output-side part 19 of the swing bridge 11, is designed as a trough-shaped recess into which the shoulder 51 engages appropriately and is diametrically embraced in the present case.
  • the other attachment 52 engages in a groove-shaped recess 53 provided on the crosspiece 40 of the carrier 35, as can be seen in particular from FIG. 2. In this way, a particularly good and secure mounting and positioning of the electric motor 10 is achieved.
  • the tongues 31 and 32 having the detents 33 and 34 are designed to be resilient in themselves by the choice of their cross-sectional dimensions in order to releasably hold the shaving head 4 on the base part 14 of the swing bridge 11.
  • the tongues of which FIG. 3 shows a tongue 31, are inherently rigid and have two coaxial, laterally facing away from the free end having the catch End projecting, torsion springs forming rods, here the rods 54 and 55, are connected to the base part 14 of the swing bridge 11 1.
  • Such a division into resilient areas formed by the rods 54 and 55 and rigid areas formed by the tongues ensures that the tongues together with the catches can be pivoted well resiliently on the one hand and on the other hand hold the shaving head 4 securely on the base part 14 of the swing bridge 11 .
  • the entire, the swing bridge, the support, the tongues with the catches and the shaving head supports, one-piece component can be made of a relatively high rigidity plastic material, so that it is stable as a whole and a perfect mounting of the shaving head 4 and the Electric motor 10 ensures, then the spring action for the notches provided on the tongues is obtained by dimensioning the rods 54 and 55.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Non-Insulated Conductors (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)

Abstract

A dry shaver comprises a basic unit housing together with a shaver head having a longitudinally extending upper blade and a reciprocatorily drivable longitudinally extending lower blade acting in conjunction therewith. A swinging bridge is secured in the basic unit housing and has a reciprocatory output part for driving the lower blade and a stationary base part provided with an aperture. An electric motor having an essentially-cylindrical housing has one end of the motor housing connected to the stationary base part of the swinging bridge, the drive shaft of the motor extending through the aperture in the base part into the output part of the swinging bridge. An eccentric on the drive shaft drives the output part. A frame-like motor support has a transverse U-shape, one end of such support being connected to the stationary base part of the swinging bridge. The support has two longitudinal sections parallel to the motor drive shaft and partially enclosing the motor housing to form motor bearing surfaces, and a transverse section at its other end to support the other end of the motor housing. Two spring-action tongues are connected to the stationary base part of the swinging bridge respectively adjacent the opposite ends of the shaver head. Two catches are respectively provided at the free ends of the tongues for securing the shaver head. Two shaver-head bearing surfaces are provided on the stationary base part of the swinging bridge respectively adjacent the tongues, the catches pressing the shaver head against such latter bearing surfaces. The swinging bridge, the motor support, the tongues, and the shaver-head bearing surfaces are formed from a plastic as a single-piece component.

Description

Die Erfindung betrifft einen Trockenrasierapparat mit einem auf ein Grundgerät aufsetzbaren, eine Längs- und Quererstreckung aufweisenden Scherkopf, der mit zwei einander gegenüberliegenden , je mit den Querwänden des Scherkopfes zusammenwirkenden, entgegen einer Federwirkung lösbaren Rasten festgehalten ist und der mindestens ein Obermesser trägt, mit dem ein in der Längserstreckung des Scherkopfes hin- und hergehend antreibbares Untermesser zusammenwirkt, welches vom abtriebsseitigen Teil einer im Grundgerät angeordneten Schwingbrücke angetrieben wird, der seinerseits über einen Exzenter von der Antriebswelle eines ein im wesentlichen zylindrisches Motorgehäuse aufweisenden Elektromotors angetrieben wird, der mit dem Motorgehäuse von der Schwingbrücke wegweisend mit einem stillstehenden Basisteil derselben in Verbindung steht, wobei seine Antriebswelle durch eine im Basisteil vorgesehene Öffnung zum abtriebsseitigen Teil der Schwingbrücke hin hindurchgeführt ist. Bei einem aus der DE-B-2 749 936 bekannten derartigen Trockenrasierapparat ist zur Verbindung des Elektromotors mit der Schwingbrücke an der derAntriebswelle zugewandten Stirnseite des Elektromotors eine quer zu dessen Antriebswelle verlaufende, sich mit ihren freien Enden am Basisteil der Schwingbrücke abstüzende Lasche angebracht, die beiderseits der Antriebswelle des Elektromotors je eine U-förmige Ausbuchtung aufweist, durch die Schrauben hindurchgeführt sind, die auch den Basisteil der Schwingbrücke durchsetzen, wodurch der Elektromotor nach Art einer Klemmverbindung am Basisteil der Schwingbrücke festgehalten ist. Weiters ist bei diesem bekannten Gerät der Scherkopf mit zwei entgegen der Wirkung von je einer Feder verstellbaren Rastriegeln am Grundgerät festgehalten. Ein derartiger Trockenrasierapparat ist relativ aufwendig, da er relativ viele Einzelteile aufweist, wodurch sich auch seine Montage nicht einfach gestaltet und damit relativ zeitaufwendig ist.The invention relates to a dry shaving apparatus with a shaving head which can be placed on a basic device and has a longitudinal and transverse extension, which is held in place with two opposite detents, each of which interacts with the transverse walls of the shaving head and can be released against a spring action, and which carries at least one upper knife with which a reciprocating in the longitudinal extension of the shaving head interacting lower knife, which is driven by the output-side part of a swing bridge arranged in the basic device, which in turn is driven by an eccentric from the drive shaft of an essentially cylindrical motor housing having an electric motor, which with the motor housing from of the swing bridge is groundbreakingly connected to a stationary base part thereof, its drive shaft being passed through an opening provided in the base part to the driven part of the swing bridge. In such a dry shaving apparatus known from DE-B-2 749 936, a tab which runs transversely to its drive shaft and is supported with its free ends on the base part of the swing bridge is attached to connect the electric motor to the swing bridge on the end of the electric motor facing the drive shaft Both sides of the drive shaft of the electric motor each have a U-shaped bulge through which screws are passed, which also penetrate the base part of the swing bridge, whereby the electric motor is held in the manner of a clamp connection on the base part of the swing bridge. Furthermore, in this known device, the shaving head is held on the basic device with two locking bolts which can be adjusted against the action of one spring each. Such a dry shaver is relatively complex because it has a relatively large number of individual parts, which means that its assembly is also not easy and is therefore relatively time-consuming.

Die Erfindung hat sich zum Ziel gesetzt, einen Trockenrasierapparat der eingangs angeführten Gattung so auszugestalten, dass er möglichst wenig Einzelteile aufweist und seine Montage möglichst einfach ist, damit sie gegebebenfalls auch vollmechanisiert durchgeführt werden kann. Erfindungsgermäss ist hiezu vorgesehen, dass mit dem Basisteil der Schwingbrücke ein U-förmiger rahmenartiger Träger verbunden ist, dessen Längsstege parallel zur Antriebswelle des Elektromotors verlaufen und von der Schwingbrücke wegweisend vom Basisteil derselben auskragen, dass in diesem Träger der Elektromotor eingesetzt ist, wobei das Motorgehäuse sich mit der der Antriebswelle zugewandten Stirnseite am Basisteil und mit der von der Antriebswelle abgewandten Stirnseite am Quersteg des Trägers abstützt und von den beiden Längsstegen des Trägers zur Bildung von Motorauflagen je teilweise umfangsseitig umfasst wird, dass die zwei Rasten zum Festhalten des Scherkopfes im Bereich der freien Enden zweier federnd verschwenkbarer Zungen vorgesehen sind, dass die Zungen mit dem Basisteil der Schwingbrücke verbunden sind, dass am Basisteil der Schwingbrücke mindestens ain Auflager für den Scherkopf vorgesehen ist, gegen das er durch die zwei Rasten angedrückt gehalten wird, und dass die Schwingbrücke, der Träger, die Zungen und das Scherkopfauflager als einstückiger Teil aus Kunststoff hergestellt ist. Auf diese Art und Weise wird ein sehr einfacher Aufbau erhalten, da sowohl zur Halterung und Positionierung des Elektromotors als auch zum Festhalten des Scherkopfes keine separaten Teile notwendig sind, wodurch sich auch die Montage sehr einfach gestaltet. Weiters ist ein solcher alle diese Funktionen erfüllender und die Schwingbrücke mitumfassender einziger Bauteil sehr einfach in nur einem Arbeitsgang aus Kunststoff herzustellen. Es ist an dieser Stelle zu erwähnten, dass aus der AT-B-353 141 ein Trockenrasierapparat bekannt ist, bei dem mittels einer Platte ein Schwingankermotor und ein Scherkopf zu einer Baueinheit vereinigt sind. Hiebei ist der Scherkopf an der ein Auflager für ihn bildenden Platte mit zwei einander gegenüberliegenden, entgegen einer Federwirkung lösbaren Rasten festgehalten, die als Haken im Bereich der freien Enden zweier federnd verschwenkbarer Zungen ausgebildet sind, die ihrerseits mit der Platte verbunden sind und mit dieser einen einstückigen Teil bilden. Weiters ist der unmittelbar mit dem Untermesser des Scherkopfes zusammenwirkende Schwingankermotor mit Schrauben an der Platte befestigt. Dieser Trockenrasierapparat weist somit keine Schwingbrücke auf, so dass die Platte nur zur Halterung des Scherkopfes und Befestigung des Schwingankermotors dient, wobei keine Vorsorge getroffen ist, dass der Schwingankermotor ohne weitere Befestigungsmittel mit der Platte verbunden werden kann. Demgegenüber ist bei dem vorliegenden erfindungsgemässen Trockenrasierapparat ein enstückiger Bauteil vorgesehen, der insgesamt drei Funktionen erfüllt, nämlich die Halterung und Positionierung des Elektromotors, die Bildung der Schwingbrücke und die Halterung des Scherkopfes. Aufgrund dieser Massnahmen sind auch die möglichen Toleranzen, die zwischen den einzelnen Bauteilen auftreten und sich beim Zusammenbau derselben störend bemerkbar machen können, soweit reduziert, dass ein einwandfreies Zusammenwirken von Elektromotor, Schwingbrücke und Scherkopf gewährleistet ist,The invention has set itself the goal of designing a dry shaver of the type mentioned at the outset in such a way that it has as few individual parts as possible and its assembly is as simple as possible so that it can also be carried out fully mechanized if necessary. According to the invention, it is provided that a U-shaped frame-like support is connected to the base part of the swing bridge, the longitudinal webs of which run parallel to the drive shaft of the electric motor and project from the swing bridge pointing away from the base part of the same, that the electric motor is inserted in this support, the motor housing is supported on the base part with the end facing the drive shaft and on the crossbar of the carrier with the end facing away from the drive shaft and is partially circumferentially encompassed by the two longitudinal webs of the carrier to form engine supports that the two catches for holding the shaving head in the region of the free ends of two resiliently pivotable tongues are provided, that the tongues are connected to the base part of the swing bridge, that at least a support is provided for the shaving head on the base part of the swing bridge, against which it is held by the two notches, and that the shear wing bridge, the carrier, the tongues and the shaving head support is made as a one-piece part from plastic. In this way, a very simple construction is obtained, since no separate parts are necessary both for holding and positioning the electric motor and for holding the shaving head, which also makes assembly very simple. Furthermore, such a single component that fulfills all these functions and includes the oscillating bridge is very simple to produce from plastic in only one work step. It should be mentioned at this point that from AT-B-353 141 a dry shaver is known in which an oscillating armature motor and a shaving head are combined into one structural unit by means of a plate. The shaving head is held on the plate that forms a support for it with two opposing detents that can be released against a spring action, which are designed as hooks in the area of the free ends of two resiliently pivotable tongues, which in turn are connected to the plate and to one form an integral part. Furthermore, the oscillating armature motor, which interacts directly with the lower blade of the shaving head, is fastened to the plate with screws. This dry shaving apparatus thus has no oscillating bridge, so that the plate only serves to hold the shaving head and fasten the oscillating armature motor, no precautions being taken to ensure that the oscillating armature motor can be connected to the plate without further fastening means. In contrast, in the present dry shaving apparatus according to the invention, a one-piece component is provided that fulfills a total of three functions, namely the mounting and positioning of the electric motor, the formation of the swing bridge and the mounting of the shaving head. As a result of these measures, the possible tolerances that occur between the individual components and which can be noticeable when assembling them are reduced to the extent that a perfect interaction of the electric motor, oscillating bridge and shaving head is ensured,

Als vorteilhaft hat sich erwiesen, wenn sich der U-förmige rahmenartige Träger mit seiner vom Elektromotor abgewandten Seite am Gehäuse des Grundgerätes abstützt. Auf diese Weise wird die Halterung des Elektromotors besonders stabil, da der Träger selbst unterstützt ist.It has proven to be advantageous if the U-shaped frame-like support is supported with its side facing away from the electric motor on the housing of the basic device. In this way, the holder of the electric motor is particularly stable since the carrier itself is supported.

Weiters hat sich als vorteilhaft erwiesen, wenn der Elektromotor an seiner vom U-förmigen rahmenartigen Träger abgewandten Seite von mindestens einem Federelement belastet ist, das ihn zum Träger hin drückt. Hierdurch wird die Halterung des Elektromotors, insbesondere bei stossförmigen Belastungen, sehr gut stabilisiert. Als Federelemente kommen hiebei Gummipuffer, Gummileisten, Schaumstoffstreifen und dergleichen in Frage, die beispielsweise am Gehäuse des Grundgerätes befestigt sein können.Furthermore, it has proven to be advantageous if the electric motor on its side facing away from the U-shaped frame-like carrier is loaded by at least one spring element which presses it towards the carrier. As a result, the holder of the electric motor is very well stabilized, particularly in the case of shock loads. Rubber springs, rubber strips, foam strips and the like, which can be attached to the housing of the basic device, for example, are suitable as spring elements.

Hinsichtlich der federnd verschwenkbaren Zungen ist festzustellen, dass diese beispielsweise als Ganzes elastisch federnd ausgebildet werden können. Als sehr vorteilhaft hat sich aber erwiesen, wenn die Zungen in sich steif ausgebildet sind und über je zwei koaxiale, je seitlich von dem die Rast aufweisenden freien Ende abgewandten Ende auskragende, Torsionsfedern bildende Stäbe mit dem Basisteil der Schwing brücke verbunden sind. Durch eine derartige Aufteilung in federnde Bereiche und steife Bereiche der Zungen ist erreicht, dass sie einerseits gut federnd verschwenkbar sind und andererseits den Scherkopf sicher am Basisteil der Schwingbrücke festhalten. Dabei kann der gesamte einstückige Bauteil aus einem relativ hohe Steifigkeit ergebenden Kunststoffmaterial hergestellt werden, so dass er als Ganzes stabil ist und eine einwandfreie Halterung des Scherkopfes und des Elektromotors gewährleistet, wobei dann die Federwirkung für die Rasten durch die Dimensionierung der Stäbe erhalten wird.With regard to the resiliently pivotable tongues, it should be noted that these, for example, as Whole elastic can be formed. It has proven to be very advantageous, however, if the tongues are rigid in themselves and are connected to the base part of the oscillating bridge by means of two coaxial cantilevered torsion springs which laterally project from the end facing away from the latching free end. Such a division into resilient areas and rigid areas of the tongues means that on the one hand they can be pivoted well resiliently and on the other hand securely hold the shaving head on the base part of the swing bridge. The entire one-piece component can be made of a relatively high rigidity plastic material, so that it is stable as a whole and ensures proper mounting of the shaving head and the electric motor, the spring action for the catches being obtained by dimensioning the rods.

Weiters hat sich bei einem Trockenrasierapparat, bei dem das Motorgehäuse des Elektromotors mindestens an einer seiner beiden Stirnseiten einen zur Antriebswelle des Elektromotors koaxialen Ansatz aufweist, als vorteilhaft erwiesen, wenn im Bereich der Abstützung der einen Ansatz aufweisenden Stirnseite des Motorgehäuses am die Schwingbrücke, den Träger, die Zungen und das Scherkopfauflager bildenden einstückigen Teil an demselben eine rinnenförmige Ausnehmung vorgesehen ist, in welche der an der Stirnseite des Motorgehäuses vorgesehene Ansatz passend eingreift. Auf diese Weise wird die Halterung und Positionierung des Elektromotors besonders gut und sicher.Furthermore, in a dry shaving apparatus in which the motor housing of the electric motor has an extension coaxial to the drive shaft of the electric motor at least on one of its two end faces, it has proven to be advantageous if, in the area of the support of the front end of the motor housing having an extension, the oscillating bridge, the carrier , the tongues and the shaving head bearing integral part is provided on the same a groove-shaped recess in which the shoulder provided on the front side of the motor housing engages appropriately. In this way, the mounting and positioning of the electric motor is particularly good and safe.

Die Erfindung wird im folgenden anhand der Zeichnungen, in welchen zwei Ausführungsbeispiele der Erfindung dargestellt sind, auf die sie jedoch nicht beschränkt sein soll, näher erläutert.

  • Fig. 1 zeigt teilweise im Schnitt und in Draufsicht einen Trockenrasierapparat, bei dem die Schwingbrücke, der Träger für den Elektromotor, die mit Rasten versehenen Zungen zum Festhalten des Scherkopfes und zwei Scherkopfauflager als einstückiger Teil hersgestellt ist, wobei die Zungen als Ganzes elastisch federnd verschwenkbar ausgebildet sind;
  • Fig. 2 zeigt einen Schnitt nach der Linie 11-11 in Fig. 1;
  • Fig. 3 zeigt in der Darstellungsweise von Fig. 1 einen Ausschnitt eines Trockenrasierapparates, bei dem die mit den Rasten versehenen Zungen zum Festhalten des Scherkopfes in sich steif ausgebildet sind und über je zwei Torsionsfedern bildende Stäbe mit dem Basisteil der Schwingbrücke verbunden sind;
  • Fig. 4 zeigt einen Schnitt nach der Linie IV-IV in Fig. 3.
The invention is explained in more detail below with reference to the drawings, in which two exemplary embodiments of the invention are shown, to which, however, it should not be limited.
  • Fig. 1 shows partially in section and in plan view a dry shaver in which the swing bridge, the support for the electric motor, the tabs provided with tabs for holding the shaving head and two shaving head supports are made as a one-piece part, the tongues as a whole being elastically resiliently pivotable are trained;
  • Fig. 2 shows a section along the line 11-11 in Fig. 1;
  • Fig. 3 shows in the representation of Figure 1 a section of a dry shaving apparatus, in which the tongues provided with the catches for holding the shaving head are rigid in themselves and are connected to the base part of the oscillating bridge by means of rods each forming two torsion springs;
  • FIG. 4 shows a section along the line IV-IV in FIG. 3.

In den Figuren 1 und 2 ist mit 1 ein Grundgerät eines Trockenrasierapparates bezeichnet, dessen Gehäuse aus zwei Gehäuseschalen 2 und 3 zusammengesetzt ist. Auf dieses Grundgerät 1 ist ein Scherkopf 4 aufsetzbar, der an einem Scherkopfrahmen 5 ein Obermesser 6 trägt, mit dem ein in der Längserstreckung des Scherkopfes 4 hin- und hergehend antreibbares Untermesser 7 zusammenwirkt. Beim vorliegenden Ausführungsbeispiel ist das Obermesser 6 als gewölbt verlaufende Siebscherfolie und das Untermesser 7 als Lamellenmesser ausgebildet. Beispielsweise können aber auch in bekannter Weise das Obermesser und das Untermesser als miteinander zusammenwirkende Kammesser ausgebildet sein. Das Grundgerät 1 beinhaltet einen hier beispielsweise von Akkumulatoren 8 und 9 speisbaren Elektromotor 10, eine Schwingbrücke 11 sowie weitere Einzelteile, wie einen Ein- und Ausschalter 12. der zusammen mit den beiden Akkumulatoren 8 und 9 und eine Ladeschaltung für dieselben bildenden, hier nicht näher bezeichneten, elektrischen Schaltelementen auf einer Leiterplatte 13 angeordnet ist.1 and 2, 1 denotes a basic device of a dry shaving apparatus, the housing of which is composed of two housing shells 2 and 3. A shaving head 4 can be placed on this basic device 1, which carries an upper knife 6 on a shaving head frame 5, with which a lower knife 7 which can be driven back and forth in the longitudinal extension of the shaving head 4 cooperates. In the present exemplary embodiment, the upper knife 6 is designed as a curved screen shear film and the lower knife 7 as a lamellar knife. For example, the upper knife and the lower knife can also be designed in a known manner as co-operating comb knives. The basic device 1 includes an electric motor 10, which can be fed by accumulators 8 and 9, a swing bridge 11 and further individual parts, such as an on / off switch 12, which together with the two accumulators 8 and 9 and a charging circuit for the same, but not in more detail here designated electrical switching elements is arranged on a circuit board 13.

Dle in üblicher Weise aufgebaute Schwingbrücke 11 weist einen stillstehenden Basisteil 14 auf, der zwischen den Gehäuseschalen 2 und 3 festgehalten ist, wozu seine dem Gehäuseinneren angepasste, einen Dichtungsring 15 tragende Umrandung mit dem Dichtungsring 15 in korrespondierende Nuten 16 an den Gehäuseschalen 2 und 3 eingreift. Mit diesem Basisteil 14 steht über Filmscharniere 17 und 18 der abtriebsseitige, seinerseits hin- und hergehend antreibbare Teil 19 der Schwingbrücke 11 in Verbindung. Der Antrieb dieses Teiles 19 erfolgt von der Antriebswelle 20 des Elektromotors 10 her über einen auf die Antriebswelle 20 aufgesetzten Exzenter 21, dessen Exzenterstift 22 in einen am Teil 19 vorgesehenen Schlitz 23 eingreift. Hiebei steht der ein im wesentlichem zylindrisches Motorgehäuse aufweisende Elektromotor 10 mit dem Basisteil 14 der Schwingbrücke 11 derart in Verbindung, dass sein Motorgehäuse von der Schwingbrücke 11 wegweist, wobei seine Antriebswelle 20 durch eine im Basisteil 14 vorgesehene Öffnung 24 zum abtriebsseitigen Teil 19 der Schwingbrücke 11 hin hindurchgeführt ist. Die Kraftübertragung von der Schwingbrücke 11 zum Untermesser 7 erfolgt über einen am abtriebsseitigen Teil 19 derselben vorgesehenen Antriebsarm 25, der in einem am Untermesser 7 vorgesehenen gabelförmigen Ansatz 26 eingreift.The oscillating bridge 11 constructed in the usual way has a stationary base part 14 which is held between the housing shells 2 and 3, for which purpose its border adapted to the interior of the housing and carrying a sealing ring 15 engages with the sealing ring 15 in corresponding grooves 16 on the housing shells 2 and 3 . The base part 14 is connected via film hinges 17 and 18 to the output side part 19 of the swing bridge 11, which in turn can be driven back and forth. This part 19 is driven by the drive shaft 20 of the electric motor 10 via an eccentric 21 placed on the drive shaft 20, the eccentric pin 22 of which engages in a slot 23 provided on the part 19. The electric motor 10, which has an essentially cylindrical motor housing, is connected to the base part 14 of the swing bridge 11 in such a way that its motor housing points away from the swing bridge 11, its drive shaft 20 through an opening 24 provided in the base part 14 to the output-side part 19 of the swing bridge 11 is passed through. The power transmission from the swing bridge 11 to the lower knife 7 takes place via a drive arm 25 provided on the output-side part 19 thereof, which engages in a fork-shaped extension 26 provided on the lower knife 7.

Der auf am Basisteil 14 der Schwingbrücke 11 vorgesehenen Auflagern 27 und 28 aufliegende Scherkopf 4 wird mit zwei einander gegenüberliegenden, je mit den Querwänden 29 und 30 des Scherkopfrahmens 5 des Scherkopfes 4 zusammenwirkenden, entgegen einer Federwirkung lösbaren, am freien Ende zweier Zungen 31 und 32 vorgesehenen Rasten 33 und 34 festgehalten. Beim vorliegenden Ausführungsbeispiel sind die Rasten 33 und 34 durch hakenförmige Ansätze gebildet, die in korrespondierende Öffnungen in den Querwänden 29 und 30 des Scherkopfrahmens 5 eingreifen. In kinematischer Umkehrung wäre es aber auch möglich, dass die an den freien Enden der Zungen 29 und 30 vorgesehenen Rasten durch Öffnungen gebildet sind, in die an den Querwänden 29 und 30 des Scherkopfrahmens 5 vorgesehene Haken eingreifen. Hinsichtlich der Ausbildung der Auflager 27 und 28 für den Scherkopf 4 ist festzustellen, dass an Stelle der beiden hier vorgesehenen leistenförmigen Auflager 27 und 28 auch vier einzelne Stützen vorgesehen sein könnten oder es könnte auch der Basisteil 14 selbst als Auflager für den Scherkopf 4 dienen, wenn der Scherkopfrahmen 5 desselben bis zu diesem Basisteil 14 hin reichend ausgebildet ist.The shaving head 4 resting on the base part 14 of the swing bridge 11 provided with supports 27 and 28 is provided with two mutually opposite, each with the transverse walls 29 and 30 of the shaving head frame 5 of the shaving head 4, releasable against a spring action, at the free end of two tongues 31 and 32 provided detents 33 and 34 held. In the present exemplary embodiment, the catches 33 and 34 are formed by hook-shaped projections which engage in corresponding openings in the transverse walls 29 and 30 of the shaving head frame 5. In a kinematic reversal, it would also be possible for the catches provided on the free ends of the tongues 29 and 30 to be formed by openings into which hooks provided on the transverse walls 29 and 30 of the shaving head frame 5 engage. With regard to the design of the supports 27 and 28 for the shaving head 4, it should be noted that instead of the two strip-shaped supports 27 and 28 provided here, four individual supports could also be provided, or the base part 14 itself could also serve as a support for the shaving head 4, if the shaving head frame 5 of the same is designed to reach this base part 14.

Weiters ist nun vorgesehen, dass mit dem Basisteil 14 der Schwingbrücke 11 ein U-förmiger rahmenartiger Träger 35 verbunden ist, dessen beide Längsstege 36 und 37 parallel zur Antriebswelle 20 des Elektromotors 10 verlaufen und von der Schwingbrücke 11 wegweisend vom Basisteil 14 derselben auskragen. In diesen Träger 35 ist der Elektromotor 10 eingesetzt, wobei sein Motorgehäuse sich mit der der Antriebswelle 20 zugewandten Stirnseite 38 am Basisteil 14 und mit der von der Antriebswelle 20 abgewandten Stirnseite 39 am Quersteg 40 des Trägers 35 abstützt und von den beiden Längsstegen 36 und 37 des Trägers 35 zur Bildung von Motorauflagern je teilweise umfangsseitig umfasst wird. Diese beiden Motorauflager sind insbesondere in Fig. 2 deutlich zu erkennen. Beim vorliegenden Ausführungsbeispiel weist das im wesentlichen zylindrische Motorgehäuse zwei kreisbogenförmige Umfangsabschnitte 41 und 42 und zwei einander gegenüberliegende, in Richtung der Antriebswelle 20 verlaufende, segmentförmig abgesetzte ebene Seitenwände 43 und 44 auf, wie dies bei derartigen Elektromotoren vielfach üblich ist. Demgemäss weist der Längssteg 36 zur teilweisen umfangsseitigen Umfassung des Motorgehäuses zwei aneinander anschliesende Abschnitte 45 und 46 auf, von welchen der Abschnitt 45 kreisbogenförmig und der Abschnitt 46 eben ausgebildet ist, wobei sich das Motorgehäuse mit seinem kreisbogenförmigen Umfangsabschnitt 42 an dem kreisbogenförmigen Abschnitt 45 abstützt und mit seiner Seitenwand 43 am ebenen Abschnitt 46 dieses Längssteges 36 anliegt. Beim vorliegenden Ausführungsbeispiel ist der andere Längssteg 37 des Trägers 35 so ausgebildet, dass er nur einen kreisbogenförmigen Abschnitt 47 aufweist, auf dem sich das Motorgehäuse ebenfalls mit seinem kreibogenförmigen Umfangsabschnitt 42 abstützt. Falls erwünscht, könnte natürlich auch dieser Längssteg 37 einen zusätzlichen ebenen Abschnitt aufweisen, an dem dann die Seitenwand 44 des Motorgehäuses anliegen könnte. Selbstverständlich ist das Vorsehen solcher ebener Abschnitte an den Längsstegen 36 und 37 nicht zwingend notwendig, bietet aber bei einem Motorgehäuse, das Seitenwände 43 und 44 aufweist, den Vorteil einer verdrehungssicheren Halterung des Elektromotors 10. Auf diese Weise bildet der mit dem Basisteil 14 der Schwingbrücke 11 verbundene U-förmige rahmenartige Träger 35 eine sichere Halterung für den Elektromotor 10, die ihn auch in seiner Lage gegenüber der Schwingbrücke 11 einwandfrei positioniert.Furthermore, it is now provided that the base part 14 of the swing bridge 11 is connected to a U-shaped frame-like support 35, the two longitudinal webs 36 and 37 of which run parallel to the drive shaft 20 of the electric motor 10 and project from the swing bridge 11 pointing away from the base part 14 thereof. The electric motor 10 is inserted into this carrier 35, its motor housing being supported on the base part 14 with the end face 38 facing the drive shaft 20 and on the transverse web 40 of the carrier 35 with the end face 39 facing away from the drive shaft 20 and by the two longitudinal webs 36 and 37 of the carrier 35 for forming motor mounts is partially partially circumferentially encompassed. These two motor supports can be clearly seen in particular in FIG. 2. In the present exemplary embodiment, the essentially cylindrical motor housing has two circular-arc-shaped circumferential sections 41 and 42 and two mutually opposite, segmentally offset flat side walls 43 and 44 which run in the direction of the drive shaft 20, as is common in such electric motors. Accordingly, the longitudinal web 36 for the partial circumferential encirclement of the motor housing has two adjoining sections 45 and 46, of which the section 45 is designed in a circular arc and the section 46 is flat, the motor housing with its circular arc-shaped peripheral section 42 being supported on the circular section 45 and with its side wall 43 abuts the flat section 46 of this longitudinal web 36. In the present exemplary embodiment, the other longitudinal web 37 of the carrier 35 is designed such that it only has an arcuate section 47 on which the motor housing is also supported with its circular arcuate section 42. If desired, this longitudinal web 37 could of course also have an additional flat section against which the side wall 44 of the motor housing could then rest. Of course, the provision of such flat sections on the longitudinal webs 36 and 37 is not absolutely necessary, but in the case of a motor housing which has side walls 43 and 44, it offers the advantage of a torsion-proof mounting of the electric motor 10. In this way, it forms the base part 14 of the oscillating bridge 11 connected U-shaped frame-like carrier 35 a secure holder for the electric motor 10, which positions it perfectly in its position in relation to the swing bridge 11.

Mit dem Basisteil 14 der Schwingbrücke 11 sind weiters die die Rasten 33 und 34 tragenden Zungen 31 und 32 und die Scherkopfauflager 27 und 28 verbunden. Somit bildet die Schwingbrücke 11 zusammen mit dem Träger 35, den Zungen 31 und 32 und den Scherkopfauflagern 27 und 28 einen einstückigen Teil, der sehr einfach aus Kunststoff hergestellt werden kann. Dieser einstückige Teil erfüllt somit mehrere Funktionen, nämlich die Halterung des Elektromotors 10, die lösbare Halterung des Scherkopfes 4 und die Bildung einer Schwingbrücke 11 zur Umwandlung der rotierenden Antriebsbewegung des Elektromotors 10 in eine hin- und hergehende Antriebsbewegung für das Untermesser 7 des Scherkopfes 4. Auf diese Art und Weise wird ein sehr einfacher Aufbau des Trockenrasierapparates erhalten, da sowohl zur Halterung und Positionierung des Elektromotors 10 als auch zum lösbaren Festhalten des Scherkopfes 4 keine separaten Teile notwendig sind, wodurch sich auch die Montage des Trockenrasierapparates sehr einfach gestaltet. Auf Grund dieser Massnahmen sind auch die möglichen Toleranzen, die zwischen den einzelnen Bauteilen auftreten und sich beim Zusammenbau derselben störend bemerkbar machen können, soweit reduziert, dass ein einwandfreies Zusammenwirken von Elektromotor 10, Schwingbrücke 11 und Scherkopf 4 gewährleistet ist.The tongues 31 and 32 carrying the detents 33 and 34 and the shaving head supports 27 and 28 are also connected to the base part 14 of the swing bridge 11. Thus, the swing bridge 11 together with the carrier 35, the tongues 31 and 32 and the shaving head supports 27 and 28 form an integral part which can be produced very easily from plastic. This one-piece part thus fulfills several functions, namely the mounting of the electric motor 10, the releasable mounting of the shaving head 4 and the formation of a swing bridge 11 for converting the rotating drive movement of the electric motor 10 into a reciprocating drive movement for the lower knife 7 of the shaving head 4. In this way, a very simple structure of the dry shaving apparatus is obtained, since no separate parts are necessary both for holding and positioning the electric motor 10 and for releasably holding the shaving head 4, which also makes the assembly of the dry shaving apparatus very simple. On the basis of these measures, the possible tolerances which occur between the individual components and which can be disruptive when assembling the same are reduced to such an extent that a perfect interaction of the electric motor 10, oscillating bridge 11 and shaving head 4 is ensured.

Wie aus Fig. 2 ersichtlich ist, ist der durch die beiden Längsstege 36 und 37 und den Quersteg 40 gebildete Träger 35 so ausgebildet, dass er sich mit seiner vom Elektromotor 10 abgewandten Seite am Gehäuse, hier der Gehäuseschale 2, des Grundgerätes 1 abstützt. Auf diese Weise wird die Halterung des Elektromotors 10 besonders stabil, da der Träger 35 selbst unterstützt ist. Durch eine wie aus Fig. 2 ersichtliche gegenseitig korrespondierende Profilierung einerseits der Gehäuseschale 2 und andererseits der beiden Längsstege 36 und 37 sowie des Quersteges 40 wird ausserdem eine Lagesicherung des Trägers 35 erreicht. Weiters ist, wie ebenfalls die Fig. 2 zeigt, der Elektromotor 10 an seiner vom Träger 35 abgewandten Seite von zwei Federelementen 48 und 49 belastet, die ihn zum Träger 35 hin drücken. Im vorliegenden Fall sind diese beiden Federelemente 48 und 49 durch Gummileisten gebildet, die sich am Gehäuse, hier der Gehäuseschale 3, des Grundgerätes 1 abstützen. Die beiden Gummileisten sind dabei durch zwei Stege, von welchen ein Steg 50 in Fig. 2 sichtbar ist, zu einem Rahmen vereinigt, der bei der Montage des Trockenrasierapparates einfach auf den Elektromotor 10 aufgelegt werden kann. Selbstverständlich wäre es aber auch möglich, die beiden Gummileisten an der Gehäuseschale 3 zu befestigen. Auf diese Weise wird mit den beiden Federelementen 48 und 49 die Halterung des Elektromotors sehr gut stabilisiert, dies insbesondere bei stossförmigen Belastungen. Im vorliegenden Fall bilden die beiden Gummileisten auch eine Distanzierung der beiden Akkumulatoren 8 und 9 vom Elektromotor 10. Selbstverständlich wären auch andere Ausbildungen für derartige Federelemente möglich, wie beispielsweise Gummipuffer oder Schaumstoffstreifen und dergleichen.As can be seen from FIG. 2, the carrier 35 formed by the two longitudinal webs 36 and 37 and the transverse web 40 is designed such that its side facing away from the electric motor 10 is supported on the housing, here the housing shell 2, of the basic device 1. In this way, the holder of the electric motor 10 is particularly stable since the carrier 35 itself is supported. A mutually corresponding profiling, as can be seen in FIG. 2, on the one hand the housing shell 2 and on the other hand the two longitudinal webs 36 and 37 and the transverse web 40 also secure the position of the carrier 35. Furthermore, as also shown in FIG. 2, the electric motor 10 is loaded on its side facing away from the carrier 35 by two spring elements 48 and 49 which press it towards the carrier 35. In the present case, these two spring elements 48 and 49 are formed by rubber strips which are supported on the housing, here the housing shell 3, of the basic device 1. The two rubber strips are combined by two webs, of which a web 50 is visible in FIG. 2, to form a frame which can be easily placed on the electric motor 10 when the dry shaving apparatus is being installed. Of course, it would also be possible to attach the two rubber strips to the housing shell 3. In this way, the mounting of the electric motor is very well stabilized with the two spring elements 48 and 49, particularly in the case of shock loads. In the present case, the two rubber strips also form a spacing of the two accumulators 8 and 9 from the electric motor 10. Of course, other designs for such spring elements would also be possible, such as, for example, rubber buffers or foam strips and the like.

Beim vorliegenden Ausführungsbeispiel weist das Motorgehäuse des Elektromotors 10 an seinen beiden Stirnseiten 38 und 39 je einen zur Antriebswelle 20 des Elektromotors 10 koaxialen Ansatz 51 und 52 auf. Diese Ansätze 51 und 52 können ebenfalls zur Halterung und Positionierung des Elektromotors 10 herangezogen werden. Demgemäss ist die im Basisteil 14 vorgesehene Öffnung 24, durch welche die Antriebswelle 20 des Elektromotors 10 zum abtriebsseitigen Teil 19 der Schwingbrücke 11 hin hindurchgeführt ist, als rinnenförmige Ausnehmung ausgebildet, in welche der Ansatz 51 passend eingreift und im vorliegenden Fall diametral umfasst wird. In analoger Weise greift der andere Ansatz 52 passend in eine am Quersteg 40 des Trägers 35 vorgesehene rinnenförmige Ausnehmung 53 ein, wie dies insbesondere aus Fig. 2 ersichtlich ist. Auf diese Weise wird eine besonders gute und sichere Halterung und Positionierung des Elektromotors 10 erreicht.In the present exemplary embodiment, the motor housing of the electric motor 10 has on each of its two end faces 38 and 39 a shoulder 51 and 52 which is coaxial with the drive shaft 20 of the electric motor 10. These approaches 51 and 52 can also be used to hold and position the electric motor 10. Accordingly, the opening 24 provided in the base part 14, through which the drive shaft 20 of the electric motor 10 is guided to the output-side part 19 of the swing bridge 11, is designed as a trough-shaped recess into which the shoulder 51 engages appropriately and is diametrically embraced in the present case. In an analogous manner, the other attachment 52 engages in a groove-shaped recess 53 provided on the crosspiece 40 of the carrier 35, as can be seen in particular from FIG. 2. In this way, a particularly good and secure mounting and positioning of the electric motor 10 is achieved.

Beim vorliegenden Ausführungsbeispiel sind die die Rasten 33 und 34 aufweisenden Zungen 31 und 32 durch die Wahl ihrer Querschnittsabmessungen in sich federnd ausgebildet, um den Scherkopf 4 am Basisteil 14 der Schwingbrücke 11 lösbar festzuhalten. Demgegenüber ist bei dem in den Figuren 3 und 4 dargestellten Ausführungsbeispiel vorgesehen, dass die Zungen, von welchen die Fig. 3 eine Zunge 31 zeigt, in sich steif ausgebildet sind und über je zwei koaxiale, je seitlich von dem die Rast aufweisenden freien Ende abgewandten Ende auskragende, Torsionsfedern bildende Stäbe, hier die Stäbe 54 und 55, mit dem Basisteil 14 der Schwingbrücke 11 1 verbunden sind. Durch eine derartige Aufteilung in durch die Stäbe 54 und 55 gebildete federnde Bereiche und durch die Zungen gebildete steife Bereiche, ist erreicht, dass die Zungen zusammen mit den Rasten einerseits gut federnd verschwenkbar sind und andererseits den Scherkopf 4 sicher am Basisteil 14 der Schwingbrücke 11 festhalten. Dabei kann der gesamte, die Schwingbrücke, den Träger, die Zungen mit den Rasten und die Scherkopfauflager bildende, einstückige Bauteil aus einem eine relativ hohe Steifigkeit ergebenden Kunststoffmaterial hergestellt werden, so dass er als Ganzes stabil ist und eine einwandfreie Halterung des Scherkopfes 4 und des Elektromotors 10 gewährleistet, wobei dann die Federwirkung für die an den Zungen vorgesehenen Rasten durch die Dimensionierung der Stäbe 54 und 55 erhalten wird.In the present exemplary embodiment, the tongues 31 and 32 having the detents 33 and 34 are designed to be resilient in themselves by the choice of their cross-sectional dimensions in order to releasably hold the shaving head 4 on the base part 14 of the swing bridge 11. In contrast, in the exemplary embodiment shown in FIGS. 3 and 4, it is provided that the tongues, of which FIG. 3 shows a tongue 31, are inherently rigid and have two coaxial, laterally facing away from the free end having the catch End projecting, torsion springs forming rods, here the rods 54 and 55, are connected to the base part 14 of the swing bridge 11 1. Such a division into resilient areas formed by the rods 54 and 55 and rigid areas formed by the tongues ensures that the tongues together with the catches can be pivoted well resiliently on the one hand and on the other hand hold the shaving head 4 securely on the base part 14 of the swing bridge 11 . The entire, the swing bridge, the support, the tongues with the catches and the shaving head supports, one-piece component can be made of a relatively high rigidity plastic material, so that it is stable as a whole and a perfect mounting of the shaving head 4 and the Electric motor 10 ensures, then the spring action for the notches provided on the tongues is obtained by dimensioning the rods 54 and 55.

Wie aus dem Vorstehenden ersichtlich ist, besteht eine Reihe von Abwandlungen der beschriebenen Ausführungsbeispiele, ohne dass dabei der Rahmen der Erfindung verlassen wird. Dies gilt insbesondere im Hinblick auf die Ausbildung der Schwingbrücke selbst und der zusätzlich mit deren Basisteil verbundenen weiteren Teile, nämlich dem Träger für die Halterung und Positionierung des Elektromotors und den zur Halterung des Scherkopfes dienenden Auflagern und die Rasten tragenden entgegen Federwirkung verschwenkbaren Zungen.As can be seen from the above, there are a number of modifications of the exemplary embodiments described, without thereby leaving the scope of the invention. This applies in particular with regard to the design of the oscillating bridge itself and the additional parts additionally connected to its base part, namely the support for the mounting and positioning of the electric motor and the supports serving to hold the shaving head and the tongues which can be pivoted counter to the action of the spring.

Claims (5)

1. A dry-shaving apparatus, comprising a shaving head (4) constructed to be mounted on a basic apparatus (1) and extending in a longitudinal and a transverse direction, the shaving head secured by means of two catches (33, 34), which are disposed opposite one another, which each cooperate with the transverse walls (29, 30) of the shaving head, and with are detachable against spring pressure, and carrying at least one upper cutter (6) constructed to cooperate with a lower cutter (7) which can be reciprocated in the longitudinal direction of the shaving head (4) and which is driven by the output part (19) of a reciprocating bridge (11) arranged in the basic apparatus (1), which bridge is driven by the drive shaft (20) of an electric motor (10) via an eccentric (21 which motor has a substantially cylindrical motor housing and is connected to the stationary base (14) of the reciprocating bridge (11) in such a way that its motor housing extends away from said bridge, its drive shaft (20) extending through an opening (24) in the base (14) towards the output part (19) of the reciprocating bridge (11), characterized in that a U-shaped frame-like holder (35) is connected to the base (14) of the reciprocating bridge and comprises longitudinal limbs (36, 37) projecting from its transverse limb, away from the reciprocating bridge (11) and parallel to the drive shaft (20) of the electric motor, in that the electric motor (10) is mounted in said holder (35), the end surface (38) of the motor housing from which the drive shaft projects bearing against the base (14) and the end surface (39) which is remote from the drive shaft (20) bearing against the transverse limb (40) of the holder (35), whose longitudinal limbs (36, 37) partly enclose the circumferential surface of said motor housing to hold the motor, in that the two catches (33, 34) for securing the shaving head (4) are arranged at the location of the free ends to two elastically flexible tongues (31, 32), in that the longues (31, 32) are connected to the base (14) of the reciprocating bridge (11), in that the base of the reciprocating bridge is provided with at least one support (27, 28) for the shaving head (4) against which said shaving head is urged by the two catches (33, 34), and in that the reciprocationg bridge (11), the holder (35), the tongues (31, 32) and the shaving-head support (27, 28) are manufactured from a plastics as a one-piece part.
2. A dry-shaving apparatus as claimed in Claim 1, characterized in that at its side which is remote from the electric motor (10) the U-shaped frame-like holder (35) is supported on the housing of the basic apparatus (1).
3. A dry-shaving apparatus as claimed in Claim 1 or 2, characterized in that at its side which is remote from the U-shaped frame-like holder (35) the electric motor (10) is subjected to the action of at least one spring element (48, 49) to urge said motor towards the holder (35).
4. A dry-shaving apparatus as claimed in any one of the preceding Claims, characterized in that the tongues (31, 32) are inherently stiff and are each connected to the base (14) of the reciprocating bridge (11) by means of two coaxial rods (54, 55) forming torsion springs, which each project laterally from the end which is remote from the free end comprising the catch.
5. A dry-shaving apparatus as claimed in any one of the preceding Claims, in which on at least one of its end surfaces the motor housing of the electric motor (10) comprises a projecting portion (51, 52) which is coaxial with the drive shaft (20) of the electric motor, characterized in that at the location where that end surface of the motor housing which comprises a projecting portion is supported on the one-piece element forming the reciprocating bridge, the holder, the tongues and the shaving-head support said one-piece element is formed with a channel- shaped recess (53) in which the projecting portion (52) on the end surface of the motor housing engages.
EP86201189A 1985-07-09 1986-07-07 Electric dry-shaver Expired EP0208380B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2030/85 1985-07-09
AT0203085A AT385935B (en) 1985-07-09 1985-07-09 DRY SHAVER

Publications (3)

Publication Number Publication Date
EP0208380A2 EP0208380A2 (en) 1987-01-14
EP0208380A3 EP0208380A3 (en) 1987-05-20
EP0208380B1 true EP0208380B1 (en) 1989-10-18

Family

ID=3526301

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86201189A Expired EP0208380B1 (en) 1985-07-09 1986-07-07 Electric dry-shaver

Country Status (7)

Country Link
US (1) US4813136A (en)
EP (1) EP0208380B1 (en)
JP (1) JPS6214883A (en)
AT (2) AT385935B (en)
CA (1) CA1262816A (en)
DE (1) DE3666378D1 (en)
ES (1) ES2000474A6 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT395125B (en) * 1991-01-18 1992-09-25 Philips Nv ELECTRIC DRY SHAVER
US5259116A (en) * 1991-06-17 1993-11-09 Kim Laube Animal grooming clipper
US20050172492A1 (en) * 2004-02-06 2005-08-11 Ridgewood Industries Llc Electric shaver
CN115256473A (en) * 2022-07-01 2022-11-01 深圳市景创科技电子股份有限公司 Shock-absorbing shaver

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3772779A (en) * 1970-03-23 1973-11-20 Gillette Co Safety razor
AT334245B (en) * 1975-01-10 1976-01-10 Philips Nv ELECTRIC MOTOR DRIVEN DEVICE
GB1534712A (en) * 1975-05-02 1978-12-06 Gillette Co Electric shavers
JPS5363165A (en) * 1976-11-15 1978-06-06 Matsushita Electric Works Ltd Mechanism for laterally driving movable blade of electric shaver
AT347018B (en) * 1976-11-26 1978-12-11 Philips Nv ELECTRIC MOTOR DRIVEN DEVICE
AT353141B (en) * 1978-02-10 1979-10-25 Philips Nv DRY SHAVER
AT366947B (en) * 1979-09-19 1982-05-25 Philips Nv DRY SHAVER
AT379257B (en) * 1979-11-22 1985-12-10 Philips Nv DEVICE WITH AN ELECTRIC MOTOR
JPS60175361A (en) * 1984-02-20 1985-09-09 Sanyo Electric Co Ltd Waterproof cell equipment

Also Published As

Publication number Publication date
US4813136A (en) 1989-03-21
ATE47345T1 (en) 1989-11-15
ES2000474A6 (en) 1988-03-01
EP0208380A3 (en) 1987-05-20
AT385935B (en) 1988-06-10
DE3666378D1 (en) 1989-11-23
EP0208380A2 (en) 1987-01-14
ATA203085A (en) 1987-11-15
JPS6214883A (en) 1987-01-23
CA1262816A (en) 1989-11-14

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