EP2004364A1 - Rasoir electrique a tete de coupe pivotante - Google Patents

Rasoir electrique a tete de coupe pivotante

Info

Publication number
EP2004364A1
EP2004364A1 EP07711726A EP07711726A EP2004364A1 EP 2004364 A1 EP2004364 A1 EP 2004364A1 EP 07711726 A EP07711726 A EP 07711726A EP 07711726 A EP07711726 A EP 07711726A EP 2004364 A1 EP2004364 A1 EP 2004364A1
Authority
EP
European Patent Office
Prior art keywords
elements
dry shaver
shaver according
shaving head
oscillating
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
EP07711726A
Other languages
German (de)
English (en)
Other versions
EP2004364B1 (fr
Inventor
Diana Kappes
Jörg Kaiser
Alexander KLÖS
Bernhard Kraus
Andreas Larscheid
Stefan Rehbein
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=38068087&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2004364(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP2004364A1 publication Critical patent/EP2004364A1/fr
Application granted granted Critical
Publication of EP2004364B1 publication Critical patent/EP2004364B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B26B19/28—Drive layout for hair clippers or dry shavers, e.g. providing for electromotive drive
    • B26B19/288—Balance by opposing oscillation

Definitions

  • the invention relates to a dry shaver according to the preamble of patent claim 1.
  • Such a dry shaver is already known from DE 36 10 736 C2.
  • the dry shaving apparatus disclosed there although already characterized by very good adaptability to the shaving contour of the skin and thus provides superior shaving results.
  • the known razor has a projecting from the housing oscillating driven drive pin which drives a drive plate which is arranged on the pivotable shaving head, wherein two lower blades are arranged on the drive plate, which then move together with the drive motor and in the same direction back and forth. Without suitable countermeasures, the same oscillating bottom blades would create disturbing vibrations for the user.
  • Corresponding vibration reduction measures for example, by counterbalancing counterweights, are complex and require additional space in the pivotable shaving head, whereby the weight of the shaving head is additionally increased. Such additional measures are therefore unfavorable in terms of the compactness of the shaving head, complicate the balance and the dynamics in the adaptation to the respective skin contour and thus reduce the shaving performance and comfort.
  • the object of the present invention is to improve the known dry shaver; In particular, care should be taken with the least possible effort to ensure that no disturbing vibrations occur during operation. This should nevertheless allow a compact design of the dry shaver; In particular, the shaving head should be feasible in low height.
  • the vibration behavior of a dry shaver with a pivotable shaving head can be extremely improved in a surprisingly simple manner or it can already compensate for vibrations directly in the shaving head itself.
  • An embodiment of the invention provides that at least two translationally driven oscillating drive elements are present, which are each coupled to one of a plurality of vibrating elements. As a result, the space required for the arrangement of swing bridges in the shaving head itself can be extremely minimized.
  • An embodiment of the invention in which only a rotationally driven drive element must be led out of the housing, provides that the drive motor has a rotationally driven drive shaft, which has at least two in the axial direction one behind the other arranged eccentric portions.
  • the drive elements are each connected to the oscillation elements by means of intermediate transmission means.
  • This transfer means can be designed, for example, as a connecting rod or else as a joint push rod.
  • the transmission of the drive energy into the shaving head is structurally particularly simple if each of the oscillating elements has a section provided with a slot for direct or indirect coupling of the respective drive element, the slot extending transversely to the pivot axis of the shaving head.
  • at least one of the slots is formed as a passage slot, so that according to a particularly simple embodiment of the invention, the drive elements can be designed as two consecutively arranged eccentric.
  • An optimized with respect to the required components and the associated assembly costs embodiment of the invention provides that two oscillating elements are mounted one inside the other, so that no additional storage means must be used.
  • a shaving head with two different sized shear systems provides an embodiment of the invention in which the oscillating elements are driven with different sized amplitudes. If, for example, the lower blades of the respective shearing systems have masses of different sizes, unwanted vibrations result from this. By correspondingly tuned vibration amplitudes of different sizes, these can be compensated.
  • FIG. 3 shows a swing bridge arrangement according to the invention in a perspective view
  • Fig. 1 shows a dry shaver with a housing 1, which has a recess 2 in the region of the upper end face, through which protrudes a first and a second eccentric portion 3 and 4 of a drive shaft.
  • This drive shaft is driven in rotation by a not visible in this illustration electric motor.
  • a trimmer 5 is arranged, which is displaceable and switchable via a switch 6.
  • the upper end face also has two arms 7 and 8 designed as an extension of the narrow housing sides, which have bearing points 9 for receiving the shaving head 10.
  • the shaving head 10 has corresponding bearings 11, which are arranged on the side cheeks. In the assembled state of the shaving head 10 is then mounted in the housing 1 such that it is pivotable about the axis X-X.
  • a first and a second lower blade 12 and 13 by means of associated swing bridges, namely the first swing bridge 14 and the second swing bridge 15, translationally parallel to the pivot axis XX slidably mounted.
  • Each lower blade 12, 13 has a plurality of successively lined up and parallel aligned blades.
  • each lower blade 12, 13 is associated with a shaving foil 16, which is provided in a removable frame 17.
  • the latter has on its inside corresponding recesses, by means of which the removable frame 17 can be coupled in conjunction with arranged on the shaving head 10 locking bars 18 fixed to the shaving head 10.
  • the shear sheets 16 are curved, include the rounded blades of the lower blades 12, 13 partially and have a plurality of holes for the entry of the hair to be shaved. In conjunction with the oscillating reciprocating motion of the lower blades 12, 13, the hairs passing through the holes are then sheared between the shear foil and the corresponding blade of the lower blade.
  • Fig. 2 shows a central section perpendicular to the axis XX through a dry shaver according to the invention.
  • the electric motor 19 is firmly integrated in the housing 1 and can be actuated by an on / off switch, not shown.
  • On the drive shaft 20 is secured against rotation and axially secured against displacement, a molded part, which has a first and a second eccentric portion 3 and 4 respectively.
  • these eccentric portion are arranged axially one behind the other and their eccentricities are diametrically opposite, so are rotated by 180 ° from each other.
  • the first eccentric portion 3 is closer to the electric motor 19, while the second eccentric portion facing the shaving head 10.
  • the first eccentric portion 3 engages in the coupling portion 21, which is integrally formed on the first swing bridge 14 and thus connects the first lower blade 12 with the electric motor 19.
  • a coupling portion 22 is formed, which is in communication with the second eccentric portion 4 and thus with the electric motor 19.
  • the eccentricities of the two eccentric portions 3 and 4 are about 1, 5 mm, so that when operating the electric motor 19, the lower blade 12, 13 perform a mutually opposite vibration with the amplitude of about 3 mm. Since the eccentric portions are arranged on the same drive shaft 20, the vibrations of the lower blades 12, 13 also have the same vibration frequency. As long as the moving masses are the same size, vibrations are completely compensated by the opposing motion. Of course, it is also possible to build a shaving head, which has shear systems of different sizes, which then leads to different sized moving masses. In order to achieve a complete compensation of the vibration forces in this case, it is possible to tune the drive system so that the eccentricities of the eccentric portions differ from each other. This would impose a lower amplitude on the larger mass shear system than the lighter shear system.
  • the coupling portion 21 has to receive the eccentric portion 3 a transverse to the pivot axis XX slot 23, while the coupling portion 22 has an equally extending slot 24 in which the second eccentric portion 4 is received.
  • the two coupling portions 21 and 22 are arcuate in cross-section and extend approximately concentric with the pivot axis XX. As a result, the coupling sections are moved during the pivoting about the axis XX exclusively on an associated radius. The axial distances of the eccentric sections 3, 4 from each other can therefore be chosen very small. Likewise, the coupling sections 21, 22 may be designed to be close to each other.
  • the eccentric portions 3, 4 must therefore have only a small axial extent, since in contrast to the straight-line design of the coupling sections no tilting of the coupling elements relative to the drive shaft in dependence on the pivot angle about the axis XX occurs.
  • the length of the slots 23 and 24 is matched to the maximum pivot angle of the shaving head 10. In the vertical direction, the slots 23 and 24 are made continuous; at least the slot 23 must be continuous, so that the second eccentric portion 3 can be passed through it.
  • the slot 24 may also be formed as a non-continuous slot-shaped groove.
  • Both swing bridges 14, 15 each carry a receiving pot 25 and 26, respectively, in which the lower blades 12 and 13 can be mounted in a conventional manner by means of corresponding axes or pins. Between the receiving pots 25, 26 and their associated lower blades 12 and 13 are each spring elements arranged biasing the lower blade in the direction of the shear sheets 16. In this way, a flat concern of the lower blade on the associated shaving foil is always ensured.
  • FIG. 3 shows a swing bridge arrangement according to FIG. 2 with the first swing bridge 14 and the second swing bridge 15. This figure clearly shows how the two coupling sections 21 and 22 are interleaved and each at least perpendicular to the direction of oscillation (double arrow) Cover area below both swing bridges.
  • FIG. 4 shows an embodiment of the invention in which the coupling sections 21, 22 of the oscillating bridges 14, 15 are not interlaced, but arranged side by side.
  • an electric motor 19 is arranged with a drive shaft 20 in the housing 1 of the shaver, wherein on the drive shaft 20, two eccentric portions 3 and 4 are arranged.
  • a connecting rod 32 and 33 is mounted, the pins 34 and 35 with associated coupling portions 21 and 22 of the swing bridges 14 and 15 is in communication.
  • the pins 34 and 35 are slidably mounted in groove-shaped slots 23 and 24, wherein, as in the preceding figures, these slots 23 and 24 in the associated coupling portions 21 and 22 extend transversely to the pivot axis XX of the shaving head 10.
  • the oscillating bridges 14 and 15 lie one behind the other in the drawing plane and each carry one of the lower blades 12 and 13.
  • the oscillating linear oscillation is transmitted to the swing bridges parallel to the pivot axis XX via the connecting rods 32, 33. Since, as in the previous example, the eccentric sections 3, 4 counteract each other by 180 °. are twisted, the swinging movement of the swing bridges 14, 15 in opposite directions to each other. Due to the course of the slots 23, 24 transversely to the pivot axis XX and the displaceable receiving the pins 34, 35 in them, the shaving head 10 can be pivoted while maintaining the driving connection between the electric motor 19 and swing bridges 14, 15.
  • FIGS. 5 to 8 show an embodiment of the invention in which two drive elements oscillating in opposite directions to one another oscillate out of the housing 1.
  • These drive elements are two pin-shaped oscillators 36 which are guided out of the housing in a sealed manner and have recesses for the articulated reception of the lower end 38, each of which has a joint push rod 37.
  • the storage of the joint push rods in the oscillators is both pivotable, as well as linearly displaceable.
  • FIG. 7 shows a side view in which the shaving head 10 is in a middle position
  • FIG. 8 shows the deflected pivoting position of the shaving head 10 relative to the housing 1.
  • each of the two articulated push rods 37 is articulated via corresponding eyelets 41, each with a swing plate 42.
  • This connection allows a pivotability of the joint push rod 37 about an axis parallel to the pivot axis XX extending axis. It also lies parallel to the direction of oscillation of the oscillators or the respectively associated with them vibrating plates 42. Due to this connection, the vibrating plates 42 are driven in opposite directions linearly oscillating. These contain not shown arrangements for receiving the lower blade.
  • the pivotability of the articulated push rods within their bearings and the linear displaceability of the lower end 38 within the oscillators 36 is coordinated so that this drive connection can follow the maximum pivoting of the shaving head 10 relative to the housing 1 about the pivot axis XX.
  • FIGS. 9 and 10 show, on the one hand, a housing 1 with a shaving head 10 separated therefrom.
  • two adjacently located oscillators 36 which are linearly driven in opposite directions to each other in an oscillating manner, protrude out of the housing 1.
  • the oscillators 36 have plate-shaped sections 43, which carry pin elements 44 at an inwardly bent region. These pin members 44 are arranged so far inward that they move in oscillating operation of the oscillators 36 on a common line.
  • the shaving head 10 is connected via an unillustrated fork member about the axis XX pivotally connected to the housing 1.
  • each pin elements 44 engage in an associated transverse groove 45, which is respectively formed on a swing plate 42, and extends transversely to the pivot axis XX.
  • the two oscillating plates 42 are mounted parallel to the pivot axis XX displaceable in the shaving head 10 and are parallel to each other.
  • Each transverse groove 45 extends arcuately about the pivot axis XX.
  • each transverse groove 45 is disposed in a portion of the associated rocking plate 42 which also at least partially overlaps the adjacent rocking plate. These sections are nested in a staircase shape.
  • the two swing plates can be supported by appropriate provisions, such as tongue and groove or dovetail connection slidably.
  • the double arrows in FIGS. 9 and 10 in each case indicate the direction of oscillation of the oscillatory movement of the components concerned, the two oscillators 36 and thus also the oscillating plates 42, which each carry a lower blade, being driven in opposite directions.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Magnetic Heads (AREA)
EP07711726A 2006-03-07 2007-03-01 Rasoir electrique a tete de coupe pivotante Revoked EP2004364B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006010323A DE102006010323A1 (de) 2006-03-07 2006-03-07 Trockenrasierer mit schwenkbarem Scherkopf
PCT/EP2007/001749 WO2007101600A1 (fr) 2006-03-07 2007-03-01 Rasoir électrique à tête DE COUPE pivotante

Publications (2)

Publication Number Publication Date
EP2004364A1 true EP2004364A1 (fr) 2008-12-24
EP2004364B1 EP2004364B1 (fr) 2011-04-20

Family

ID=38068087

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07711726A Revoked EP2004364B1 (fr) 2006-03-07 2007-03-01 Rasoir electrique a tete de coupe pivotante

Country Status (6)

Country Link
US (1) US20090025229A1 (fr)
EP (1) EP2004364B1 (fr)
JP (1) JP2009528863A (fr)
AT (1) ATE506147T1 (fr)
DE (2) DE102006010323A1 (fr)
WO (1) WO2007101600A1 (fr)

Families Citing this family (32)

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DE102006030946A1 (de) * 2006-07-05 2008-01-10 Braun Gmbh Schereinheit für einen Trockenrasierer
DE102006034050A1 (de) * 2006-07-20 2008-01-24 Braun Gmbh Elektrischer Rasierapparat
JP4955711B2 (ja) * 2009-01-15 2012-06-20 パナソニック株式会社 電気かみそり
US9027251B2 (en) 2009-04-29 2015-05-12 Spectrum Brands, Inc. Rotary electric shaver
EP2481536B1 (fr) * 2009-09-25 2014-09-17 Panasonic Corporation Rasoir électrique
JP5453188B2 (ja) * 2010-07-08 2014-03-26 パナソニック株式会社 往復式電気かみそり
JP2012016491A (ja) * 2010-07-08 2012-01-26 Panasonic Electric Works Co Ltd 往復式電気かみそり
US8898909B2 (en) * 2010-08-25 2014-12-02 Spectrum Brands, Inc. Electric shaver
JP5842158B2 (ja) * 2011-02-28 2016-01-13 パナソニックＩｐマネジメント株式会社 電気かみそり
CN107112878B (zh) 2014-12-23 2020-04-10 博朗有限公司 线性马达和其支撑件
US10391650B2 (en) 2015-11-03 2019-08-27 Spectrum Brands, Inc. Hair grooming appliance
EP3300845B1 (fr) 2016-09-28 2019-10-23 Braun GmbH Couplage de rasoir et rasoir électrique doté d'un couplage
EP3305485B1 (fr) 2016-09-28 2019-07-03 Braun GmbH Rasoir électrique
EP3300861B1 (fr) 2016-09-28 2019-07-03 Braun GmbH Dispositif entraîné électriquement
EP3300848B1 (fr) 2016-09-28 2019-10-23 Braun GmbH Rasoir électrique
EP3300863B1 (fr) 2016-09-28 2020-06-17 Braun GmbH Rasoir électrique
EP3300843B1 (fr) 2016-09-28 2020-04-15 Braun GmbH Rasoir électrique
EP3300854B1 (fr) 2016-09-28 2020-06-10 Braun GmbH Rasoir électrique
EP3300844B1 (fr) 2016-09-28 2020-04-15 Braun GmbH Rasoir électrique
EP3300850B1 (fr) * 2016-09-28 2019-10-23 Braun GmbH Rasoir électrique
EP3396828B1 (fr) 2017-04-27 2021-08-18 Braun GmbH Appareil électrique de soins personnels
EP3396827B1 (fr) 2017-04-27 2023-06-28 Braun GmbH Appareil électrique pour soins personnels
EP3396821B1 (fr) 2017-04-27 2023-06-14 Braun GmbH Rasoir électrique
EP3396826B1 (fr) 2017-04-27 2022-10-19 Braun GmbH Appareil électrique pour soin personnel
JP6854695B2 (ja) * 2017-05-02 2021-04-07 マクセルイズミ株式会社 往復式電気かみそり
EP3546146B1 (fr) * 2018-03-27 2021-08-18 Braun GmbH Dispositif d'épilation
EP3546155B1 (fr) 2018-03-29 2022-07-20 Braun GmbH Dispositif de soins personnels tel qu'un rasoir électrique
EP3546154B1 (fr) * 2018-03-29 2022-06-01 Braun GmbH Rasoir électrique
WO2020103112A1 (fr) * 2018-11-23 2020-05-28 浙江夏隆电器有限公司 Rasoir
CA3092814C (fr) * 2020-09-11 2021-11-30 Norwood Industries Inc. Ensemble de tete d`abattage a chaine coupante a gorge profonde et sa trousse
US20230064384A1 (en) * 2021-08-27 2023-03-02 Wahl Clipper Corporation Shaver
CN116015015B (zh) * 2022-12-30 2023-08-29 东莞市科德精密制造有限公司 一种可保证弹性摆臂间距的直线电机

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Also Published As

Publication number Publication date
WO2007101600A1 (fr) 2007-09-13
DE502007006994D1 (de) 2011-06-01
DE102006010323A1 (de) 2007-09-13
US20090025229A1 (en) 2009-01-29
EP2004364B1 (fr) 2011-04-20
ATE506147T1 (de) 2011-05-15
JP2009528863A (ja) 2009-08-13

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