EP0529478B1 - Rasierapparat - Google Patents

Rasierapparat Download PDF

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Publication number
EP0529478B1
EP0529478B1 EP92114063A EP92114063A EP0529478B1 EP 0529478 B1 EP0529478 B1 EP 0529478B1 EP 92114063 A EP92114063 A EP 92114063A EP 92114063 A EP92114063 A EP 92114063A EP 0529478 B1 EP0529478 B1 EP 0529478B1
Authority
EP
European Patent Office
Prior art keywords
shaving apparatus
electric shaving
recess
electric
cutter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP92114063A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0529478A1 (de
Inventor
Gebhard Braun
Reinhold Eichhorn
Wolfgang Franke
Helmut Dürr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Publication of EP0529478A1 publication Critical patent/EP0529478A1/de
Application granted granted Critical
Publication of EP0529478B1 publication Critical patent/EP0529478B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • B26B19/02—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 an electric shaver according to the preamble of claim 1.
  • a shaver of the type mentioned is known from DE-C1 39 26 894.
  • the all-round closed shaving system consists of a shaving head frame pivotally mounted between two support arms about the pivot axis Z, to which an upper knife and a bottom plate are attached on the one hand and a lower knife arranged between the bottom plate and the upper knife, which are provided by the drive elements provided in the shaving head frame and on the bottom plate provided in the housing of the razor drive elements in an oscillating movement.
  • the invention has for its object to improve the shaving head system of a razor of the type mentioned.
  • this object is achieved in a razor of the type mentioned by the characterizing feature of claim 1.
  • the direct coupling of the lower knife to the drive system, which can be pivoted about the pivot axis Z, causes the shaving system to be divided into two subassemblies which can be separated from one another a lower knife system which is directly assigned to the drive system located in the housing of the shaving apparatus and an upper knife system which is pivotally mounted in the shaving head frame about the pivot axis Z.
  • This separation of the upper knife system and the lower knife system results in a structural simplification and cost-effective manufacture of a shear system which can be pivoted about a pivot axis.
  • the shaving head frame is designed to be open on the housing side and is preferably attachable directly to the housing and detachably coupled to it.
  • the base plate required in the known shaving head system and the drive elements provided between the base plate and the bottom knife and causing the bottom knife to oscillate are eliminated.
  • a recess running concentrically to the pivot axis Z is provided on the coupling element as a control curve for a pressure tappet which can be acted upon by a spring.
  • the recess which is designed as a control cam, in conjunction with the pressure plunger which rests against the wall running concentrically to the pivot axis Z under spring pressure, ensures a perfect pivoting movement of the lower knife about the pivot axis Z and a resilient contact of the lower knife with the upper knife. This measure optimizes the interaction of the cutting elements which are each pivotably mounted separately, such as the upper knife and the associated lower knife, which is directly driven by the drive system, with the result of an improved cutting result.
  • the coupling element can expediently be coupled to the drive system by means of a drive sleeve which engages in a U-shaped recess provided on the coupling element.
  • the recess is preferably provided in the U-shaped recess.
  • the pressure ram and the spring are expediently mounted within the drive sleeve.
  • the drive sleeve has a cylinder pot in which the pressure tappet is mounted so as to be displaceable against the pressure of the spring.
  • an annular outer bead is provided on the outer jacket of the cylinder pot. The outer bead is preferably provided with a shape corresponding to a spherical cutout.
  • a particularly simple and inexpensive and at any time releasable coupling of the lower knife to the drive system is achieved according to the invention in that webs are provided on the outer walls of the coupling element, the drive system having a coupling sleeve surrounding the drive sleeve and seated on a shoulder of the drive sleeve on which Fastening hooks and a paragraph are provided.
  • the drive sleeve is coupled to an oscillating bridge by way of fastening hooks encompassing the shoulder and the shoulder of the coupling sleeve.
  • the fastening hooks are expediently provided directly on the swing bridge or on a support plate fastened on a swing bridge.
  • the coupling element can be coupled to the drive system by means of the webs engaging behind the fastening hooks.
  • the webs are each provided with a control curve and a recess for the engagement of the fastening hooks.
  • the recess is preferably provided in the middle of the control curve.
  • locking cams are provided on the locking hooks for engaging in the recesses.
  • Fig. 1 shows an electric shaver with a housing 1 and a shaving head system 2 pivotable about a pivot axis Z relative to the housing 1 and an on and off switch 4 which is displaceably mounted on the front side 3 and to which a slidably mounted long hair cutter 5 is assigned.
  • the shaving head system 2 consists of a shaving head frame 6 arranged on the housing 1, an upper knife 9 pivotably mounted between the end walls 7, 8 about the pivot axis Z, and - see FIG. 2 - a lower knife 10 resting on the upper knife 9, which is connected via a coupling element 11 is coupled to a drive system 12 arranged in the housing 1 both in terms of drive and pivotable about the pivot axis Z, the pivoting movement of the lower knife 10 being effected by the action of the pivotably mounted upper knife 9 on the lower knife 10.
  • the shaving head frame 6 is removably attached to the housing 1 by means of a locking device.
  • Upper knife frame 42 and shaving head frame 6 are coupled to one another via their end walls 8 and 45 and 7 and 41 by means of bearing bolts 50, 51 penetrating through bearing bores 46, 47, 48, 49 and fastening plates 56 serving for fastening the bearing bolts 50, 51.
  • the center axis of the bearing bolts 50, 51 lies on the pivot axis Z.
  • the upper knife 9 has two curved shear surfaces 13, 14 that run parallel to the pivot axis Z.
  • the the arcuate shear surfaces 13 and 14 connecting tangential plane is an imaginary plane, which is referred to as the shear plane SE - see Fig. 1a.
  • the shear surfaces 13 and 14 are formed by two shaving foils 131, 141 that are arched in the upper knife frame 42.
  • Each of the two shaving foils 131 and 141 is fastened to a web 421 provided within the upper knife frame 42 and extending parallel to the pivot axis Z and coupled to the opposite longitudinal side in each case with one of the two side walls 422, 423 of the upper knife frame 42 also running parallel to the pivot axis.
  • the lower knife 10 consists of two parallel, arc-shaped knife blocks 15, 16 which are fastened together on the coupling element 11.
  • the coupling element 11 On the side facing the drive system 12, as can be seen from FIG. 2, four walls running parallel to one another are provided on the coupling element 11, the opposite inner walls 17 and 18 forming a U-shaped recess 19 and the two outer walls 20, 21 in each case are provided with an outwardly directed web 22, 23.
  • the U-shaped recess 19 there is a further U-shaped recess 24 with an arcuate course of the wall 241 which is matched to the pivoting movement of the upper knife 9 about the pivot axis Z.
  • the drive system 12 comprises a swing bridge 27 arranged in the housing 1 and driven by a motor 25 by means of an eccentric 26, and coupling elements arranged on the swing bridge 27, such as a support plate 100 with fastening hooks 28, 29, by means of which a drive sleeve 30 and a fastening hook 31, 32 having coupling sleeve 33 are attached to the support plate 100 via corresponding annular shoulders 34, 35.
  • the drive sleeve 30 points to the lower knife 10 facing end a cylinder pot 36 with an annular outer bead 37, which is provided with a shape corresponding to a spherical cutout KA - see FIG. 2a.
  • the outer bead 37 is in contact with the inner sides of the inner walls 17 and 18 and ensures on the one hand a transmission of the swinging movement of the swing bridge 27 to the lower knife 10 and a pivoting movement of the lower knife 10 on the drive sleeve 30.
  • a pressure ram 38 passing through the cylinder pot 36 is arranged in the cup-shaped drive sleeve 30.
  • a spring 40 acting on the pressure plunger 38 is arranged, by means of which the pressure plunger 38 is held in constant contact with the arcuate course of the wall 241 of the recess 24, which runs concentrically to the pivot axis Z, in the coupling element 11 in order to transmit the spring force of the spring 40 to the lower knife 10 for the purpose of resilient contact of the lower knife 10 resting on the upper knife 9.
  • the coupling sleeve 33 surrounding the drive sleeve 30 engages with the fastening hooks 31 and 32 over the webs 22 and 23 provided on the outer walls 20, 21 of the coupling element 11, with a predetermined flexibility of the fastening hooks 31 and 32 making coupling and / or handling easy and easy to handle at any time Decoupling of the lower knife 10 is guaranteed by the drive system.
  • the fastening hooks 28, 29 are likewise designed to be flexible and thus simplify the assembly and disassembly of the pressure ram 38, spring 40, drive sleeve 30 and coupling sleeve 33 on the swing bridge 27.
  • FIG. 3 shows a section through a shaving head frame 6, upper knife frame 42, lower knife 10 and coupling element 11 and coupling sleeve 33 placed on the housing 1, the section running through the fastening hook 31 of the coupling sleeve 33 and the web 22 of the coupling element 11.
  • a locking cam 311 is provided on the locking hook 31.
  • the locking cam 311 of the locking hook 31 is at a distance A above the web 22 provided with a control cam 221 and a recess 222.
  • the distance A is established when the shaving head frame 6 is installed the housing 1 automatically, since the two knife blocks 15, 16 arranged on the coupling element 11 are moved in the vertical direction downward over the associated shaving foils 131, 141 during assembly against the pressure of the pressure ram 38 acted upon by the spring 40.
  • Fig. 3a shows the partial section through the razor of FIG. 3 with a shaving head frame 6 removed from the housing 1.
  • the removal of the shaving head frame 6 from the housing 1 has the result that the pressure of the spring 40 against the wall 241 of the coupling element 11 Pressure plunger 38 moves upwards in the vertical direction V until, depending on the respective pivoting position of the lower knife 10, the locking cams 311 come to rest against the control cam 221 after the distance A has been covered. Thereafter, the control cam 221 slides along the locking cam 311 using the spring tension of the spring 40 until the locking cam 311 snaps into the recess 222 provided in the control cam 221.
  • the recess 222 is provided in the center of the arc-shaped control cam 221, whereby after the latching cam 311 has been latched into the recess 222, the lower knife 10 assumes a centering position which is in and against the center of the predetermined pivoting range the clockwise pivotable lower knife 10 lies.
  • a control curve with a prismatic control surface, the prism surfaces of which open into a recess can also be provided - not shown.
  • the web 23 of the coupling element 11 and the second fastening hook 32 provided on the coupling sleeve 33 are designed in accordance with the previously described web 22 and fastening hook 31 and are provided offset by 180.degree.
  • the lower knife 10 with the coupling piece 11 and the pressure plunger 38 are moved downwards against the pressure of the spring 40 in the vertical direction via the upper knife 9, whereby the locking cams 311, the fastening hooks 31 and 32 and the recesses 222 formed in the control cams 221 are inevitably released, as shown in FIG. 3.
  • the lower knife 10 together with the upper knife 9 can carry out a reciprocating pivoting movement about the pivot axis Z.
  • FIG. 4 shows an exploded view of the drive sleeve 30 and coupling sleeve 33 which can be coupled to one another.
  • the inner wall of the coupling sleeve is designed step-like, whereby a shoulder 331 is formed.
  • locking elements are provided which can be brought into engagement with the locking elements 352, 353.
  • the lower knife 10 coupled to the coupling sleeve 33 can 90 ° are rotated, wherein the further recesses 333 provided in the coupling sleeve 33 come into engagement with the latching elements 352 and 353 and lock the coupling sleeve 33 with the lower knife 10 in an orientation transverse to the pivot axis Z.
  • both the lower knife 10 and the upper housing side of the housing 1 can be cleaned in a simple manner.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP92114063A 1991-08-26 1992-08-18 Rasierapparat Expired - Lifetime EP0529478B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128219 1991-08-26
DE4128219A DE4128219A1 (de) 1991-08-26 1991-08-26 Rasierapparat

Publications (2)

Publication Number Publication Date
EP0529478A1 EP0529478A1 (de) 1993-03-03
EP0529478B1 true EP0529478B1 (de) 1995-10-25

Family

ID=6439113

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92114063A Expired - Lifetime EP0529478B1 (de) 1991-08-26 1992-08-18 Rasierapparat

Country Status (7)

Country Link
US (1) US5257456A (enrdf_load_stackoverflow)
EP (1) EP0529478B1 (enrdf_load_stackoverflow)
JP (1) JPH0815507B2 (enrdf_load_stackoverflow)
AT (1) ATE129453T1 (enrdf_load_stackoverflow)
DE (2) DE4128219A1 (enrdf_load_stackoverflow)
ES (1) ES2078614T3 (enrdf_load_stackoverflow)
HK (1) HK92496A (enrdf_load_stackoverflow)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4303972C1 (de) * 1993-02-11 1993-10-14 Braun Ag Trockenrasierapparat mit einem schwenkbar gelagerten Scherkopfsystem
USD362739S (en) 1994-05-17 1995-09-26 Remington Products Company Apertured foil for electric dry shavers
JP3699736B2 (ja) * 1995-01-11 2005-09-28 株式会社泉精器製作所 電気かみそり
KR100543557B1 (ko) * 1997-10-30 2007-04-25 산요덴키가부시키가이샤 전기면도기
JP4161966B2 (ja) * 2002-06-17 2008-10-08 松下電工株式会社 電気かみそり
WO2004012914A1 (en) * 2002-07-29 2004-02-12 Koninklijke Philips Electronics N.V. Shaving apparatus
DE102006030946A1 (de) * 2006-07-05 2008-01-10 Braun Gmbh Schereinheit für einen Trockenrasierer
EP2591889B1 (en) * 2011-11-08 2015-09-16 Braun GmbH Electric shaver comprising a pivotable shaving head
EP3300861B1 (en) 2016-09-28 2019-07-03 Braun GmbH Electrically driven device
EP3300863B1 (en) 2016-09-28 2020-06-17 Braun GmbH Electric shaver
EP3546148B1 (en) 2018-03-27 2022-01-12 Braun GmbH Personal care device
EP3546150B1 (en) 2018-03-27 2021-10-27 Braun GmbH Personal care device
EP3546149B1 (en) * 2018-03-27 2021-05-12 Braun GmbH Hair removal device
EP3546151B1 (en) 2018-03-27 2025-04-30 Braun GmbH PERSONAL CARE DEVICE

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279056A (en) * 1964-10-28 1966-10-18 Andis Clipper Co Double-edge combination dry shaver and finishing hair clipper with adjustable head

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858314A (en) * 1973-06-20 1975-01-07 Schick Inc Drive assembly for an electric shaver
US4219930A (en) * 1978-07-07 1980-09-02 Remington Products, Inc. Cutter head assembly for an electric dry shaver
US4292737A (en) * 1978-12-11 1981-10-06 The Gillette Company Dry shaver with differentially biased inner cutter and base members
US4492024A (en) * 1982-09-17 1985-01-08 The Gillette Company Razor blade assembly
DE3610736A1 (de) * 1986-03-29 1987-10-01 Braun Ag Elektrischer rasierapparat mit einem schwenkbaren scherkopfsystem
GB8626631D0 (en) * 1986-11-07 1986-12-10 Gillette Co Dry shavers
JPS63174685A (ja) * 1987-01-14 1988-07-19 松下電工株式会社 電気かみそりのトリマ−装置
DE3726354A1 (de) * 1987-08-07 1989-02-16 Braun Ag Elektrischer rasierapparat mit scherkopfsteuerung
DE3926894C1 (enrdf_load_stackoverflow) * 1989-08-16 1990-12-06 Braun Ag, 6000 Frankfurt, De

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3279056A (en) * 1964-10-28 1966-10-18 Andis Clipper Co Double-edge combination dry shaver and finishing hair clipper with adjustable head

Also Published As

Publication number Publication date
US5257456A (en) 1993-11-02
DE4128219A1 (de) 1993-03-04
ES2078614T3 (es) 1995-12-16
ATE129453T1 (de) 1995-11-15
DE4128219C2 (enrdf_load_stackoverflow) 1993-06-09
EP0529478A1 (de) 1993-03-03
JPH06210077A (ja) 1994-08-02
HK92496A (en) 1996-06-07
DE59204116D1 (de) 1995-11-30
JPH0815507B2 (ja) 1996-02-21

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