EP0532904B1 - Rasierapparat - Google Patents

Rasierapparat Download PDF

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Publication number
EP0532904B1
EP0532904B1 EP92113718A EP92113718A EP0532904B1 EP 0532904 B1 EP0532904 B1 EP 0532904B1 EP 92113718 A EP92113718 A EP 92113718A EP 92113718 A EP92113718 A EP 92113718A EP 0532904 B1 EP0532904 B1 EP 0532904B1
Authority
EP
European Patent Office
Prior art keywords
end walls
shaving head
outer cutter
shaving
frame member
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
EP92113718A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0532904A1 (de
Inventor
Gerhard Hildebrand
Gunther Seidel
Manfred Ohle
Roland Ullmann
Hans-Eberhard Heintke
Klaus Ramspeck
Wolfgang Franke
Gebhard Braun
Reinhold Eichhorn
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 EP0532904A1 publication Critical patent/EP0532904A1/de
Application granted granted Critical
Publication of EP0532904B1 publication Critical patent/EP0532904B1/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 and a method for producing a shaving head.
  • a shaver of the type mentioned is known from DE-A1 36 10 736.
  • 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 features of claim 1.
  • the pivotable mounting of the upper knife frame equipped with an upper knife in a shaving head frame causes a division of the shaving system in two separable assemblies, namely in a pivotable upper knife system carried by a shaving head frame and a lower knife system which is directly assigned to the drive system located in the housing of the shaving apparatus.
  • 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 front side walls of the shaving head frame take over the function of the support arms provided according to the prior art cited at the beginning - as a result of which they are eliminated.
  • the shaving head frame is open on the housing side and can therefore be placed directly on 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.
  • the outer surfaces of the end walls of the upper knife frame are provided running parallel to the inner surfaces of the end walls of the shaving head frame.
  • the geometric shape of the outer surfaces of the end walls of the upper knife frame and the inner surfaces of the end walls of the shaving head frame is formed by a partial section of a lateral surface of a cone with a cone tip lying on the pivot axis.
  • the upper knife frame is preferably fastened to the end walls of the shaving head frame by means of two bearing bolts so as to be pivotable about the pivot axis.
  • a particularly simple and inexpensive manufacture of the coupling of the upper knife frame and the shaving head frame is characterized in that the bearing bolt passing through the end wall of the upper knife frame has a holding groove and is fastened to the end wall of the shaving head frame by means of a holding plate engaging in the holding groove.
  • a recess and at least one retaining tab are provided in the outer wall of the end walls of the shaving head frame.
  • a recess which can be inserted into the holding groove of the bearing pin is preferably provided on at least one of the long sides of the holding plate. At least one recess is expediently provided on each of the long sides of the holding plate.
  • a clamping force can be transmitted by means of the bearing bolts, which are fastened on the one hand to the end walls of the shaving head frame and, on the other hand, bear against the end walls of the upper knife frame.
  • a vibration-free or immovable coupling of the upper knife frame equipped with an upper knife to the shaving head frame is achieved according to a manufacturing process in that, by means of a device, a pressure C which reduces the distance C of the front side walls of the shaving head frame is exerted by the upper knife frame in the tensioned state of the end walls of the shaving head frame is fastened to the end walls by means of bearing bolts, and that after the pressure exerted by the device on the end walls has been withdrawn by means of the relaxation force acting on the upper knife frame via the bearing bolts the tensioned front side walls of the shaving head frame cause the upper knife frame to be immovably mounted on the bearing pin in a horizontal direction.
  • An equally advantageous method for producing a shaving head consisting of a shaving head frame and an upper knife frame pivotably mounted therein and having at least one upper knife, is characterized in that by means of a device, a pressure increasing the distance D of the front side walls is exerted on the opposite end walls of the upper knife frame is that the upper knife frame in the tensioned state of the front side walls of the upper knife frame is fastened to the front side walls by means of bearing bolts and that after releasing the pressure exerted by the device on the front side walls by means of the relaxation force of the live front side walls of the upper knife frame acting on the shaving head frame via the bearing bolts in the horizontal direction immobile storage of the upper knife frame on the bearing pin is effected.
  • 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.
  • the upper knife 9 has two curved shear surfaces 13, 14 that run parallel to the pivot axis Z.
  • the tangential plane connecting the curved shear surfaces 13 and 14 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 which is matched to the pivoting movement of the upper knife 9 about the pivot axis Z.
  • the drive system 12 consists of a swing bridge 27 arranged in the housing 1, 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 via corresponding annular shoulders 34, 35 are attached to the support plate 100.
  • the drive sleeve 30 has a cylinder pot 36 with an annular outer bead 37, which is provided with a shape corresponding to a spherical cutout.
  • 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 recess 24 in the coupling element 11 in order to increase the spring force of the spring 40 to transmit the lower knife 10 for the purpose of a 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.
  • the outer surface 43 of the end wall 41 runs parallel to one another at a small distance A.
  • the geometric shape of the outer surface 43 and the inner surface 44 corresponds to a partial section T of a lateral surface M of a cone K, the cone tip S of which lies on the pivot axis Z.
  • the lines indicated by the dash and dot serve to clarify the lateral surface M of the cone K and to indicate the cone angle W, which is 8.5 ° in the embodiment shown.
  • the cone angle W can be chosen both larger and smaller.
  • FIG 4a shows a view of the lateral surface M of the cone K and of the outer surface 43 of the end wall 41, which, as can be seen from this illustration, is formed by the partial section T of the lateral surface M of the cone K.
  • the outer surface 43 of the opposite end wall 45 of the upper knife frame 42 and the inner surface 44 of the end wall 8 of the shaving head frame have the same shape as that of the end walls 7 and 41.
  • FIGS. 2, 5 and 5a Details of the connection of the upper knife frame 42 and the shaving head frame 6 which enables a pivoting movement about the pivot axis Z are shown in FIGS. 2, 5 and 5a and are described in more detail below.
  • the end side walls 8 and 45 and 7 and 41 are coupled to one another by means of bearing bores 46, 47, 48, 49 which pass through bearing bolts 50, 51.
  • the center axis of the bearing bolts 50, 51 lies on the pivot axis Z.
  • FIGS. 5 and 5a show, for example, the coupling of the end wall 41 to the end wall 7 by means of the bearing bolt 51.
  • In the outer wall 52 of the end wall 7 there is a rectangular recess 53 with two at the Longitudinally formed retaining tabs 54 and 55 are provided.
  • a holding plate 56 which has two recesses 59, 60, 61, 62 on each of the two longitudinal sides 57, 58 in order to be able to insert the holding plate 56 into the recess 53 via the holding tabs 54 and 55.
  • a further recess 65, 66 provided, which is intended for engagement in a provided on the bearing pin 50, 51 retaining groove 67.
  • the mirror-inverted arrangement of the recesses 59, 60, 61, 62 and 65, 66 enables the holding plate 56 to be inserted in the opposite direction via the holding tabs 54 and 55, and a coupling of the holding plate 56 to the holding groove 67 of the bearing bolts 50, 51 either with the recess 65 or with the recess 66.
  • the holding plate 56 is in engagement with the holding groove 67 of the bearing bolt 51 and is held in the recess 53 by means of the holding tabs 54, 55 which overlap the holding plate 56.
  • the shape of the recesses 65, 66 is designed such that by means of this a clamping or clip function is exerted on the bearing bolts 51 and 50.
  • the locking of the bearing pin 51 can be released by moving the holding plate 56 in the direction of arrow P.
  • the holding plate 56 then comes into the position shown with lines in which it can be removed from the recess. This position corresponds at the same time to the insertion position for the purpose of shifting and fastening the bearing pin 51 in the end wall 7.
  • the end side wall 41 is pivotally mounted on the bearing pin 51 by means of the bearing bore 49 about its central axis, which also forms the pivot axis Z.
  • the bearing head 68 of the bearing pin 51 acts as a counter-bearing to the fastening formed by the groove 67 and the holding plate 56, the distance B which the bearing head 68 occupies from the mounted holding plate 56 determining the distance A shown in FIG. 4, which the outer surface 43 of the end wall 41 to the inner surface 44 of the end wall 7.
  • the live end walls 7 and 8 of the shaving head frame 6 transmit their relaxation force to the end walls 41 and 45 of the upper knife frame 42 via the bearing heads 68, 69 of the bearing bolts 50, 51, whereby a horizontally immobile mounting of the upper knife frame 42 on the Bearing pin 50, 51 is effected.
  • this manufacturing method all manufacturing tolerances in the area of the interaction of the front side walls 7 and 45 as well as 8 and 41 are compensated for by the compensation taking place over the structurally predetermined distance A - see FIG. 4.
  • this manufacturing method achieves a vibration-free and pivotable mounting of the upper knife frame 42 equipped with an upper knife 9 on the bearing bolts 50, 51 attached to the shaving head frame 6 in the horizontal direction. This ensures good cutting behavior of the upper knife 9 and lower knife 10.
  • This method is characterized in that, by means of a device, a pressure D increasing the distance D is exerted on the opposite end walls 41, 45 of the upper knife frame 42 and the upper knife frame 42 provided with an upper knife 9 in the tensioned state by inserting the bearing bolts 50 and 51 in the bearing bores 46, 47 and 48, 49 and subsequent locking by means of holding plates 56 is coupled to the end walls 7 and 8.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
EP92113718A 1991-08-26 1992-08-12 Rasierapparat Expired - Lifetime EP0532904B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128218A DE4128218C1 (ja) 1991-08-26 1991-08-26
DE4128218 1991-08-26

Publications (2)

Publication Number Publication Date
EP0532904A1 EP0532904A1 (de) 1993-03-24
EP0532904B1 true EP0532904B1 (de) 1996-03-20

Family

ID=6439112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92113718A Expired - Lifetime EP0532904B1 (de) 1991-08-26 1992-08-12 Rasierapparat

Country Status (8)

Country Link
US (2) US5235749A (ja)
EP (1) EP0532904B1 (ja)
JP (1) JP2531474B2 (ja)
AT (1) ATE135618T1 (ja)
DE (2) DE4128218C1 (ja)
DK (1) DK0532904T3 (ja)
ES (1) ES2084891T3 (ja)
HK (1) HK42097A (ja)

Families Citing this family (15)

* 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
JP3632240B2 (ja) * 1995-05-26 2005-03-23 松下電工株式会社 往復式電気かみそり
JP2000505696A (ja) * 1996-12-20 2000-05-16 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 髭剃り装置
DE19736776C2 (de) * 1997-08-23 1999-06-02 Braun Gmbh Trockenrasierapparat
DE19832473C1 (de) * 1998-07-20 2000-03-30 Braun Gmbh Trockenrasierapparat
AT2988U1 (de) * 1998-07-24 1999-08-25 Payer Lux Elektroprod Trockenrasierapparat
JP4161966B2 (ja) * 2002-06-17 2008-10-08 松下電工株式会社 電気かみそり
DE102005044175A1 (de) 2005-09-16 2007-03-29 Braun Gmbh Haarentfernungsgerät
KR200412311Y1 (ko) * 2005-12-02 2006-03-27 오태준 슬림형 전기면도기의 헤드틸팅장치
US20080034591A1 (en) * 2006-08-08 2008-02-14 Kam Fai Fung Shaver with swivel head
US7748123B2 (en) * 2006-08-31 2010-07-06 Rovcal, Inc. Electric hair cutting appliance with counter weight
US20100186234A1 (en) 2009-01-28 2010-07-29 Yehuda Binder Electric shaver with imaging capability
JP5127730B2 (ja) * 2009-01-15 2013-01-23 パナソニック株式会社 電気ひげそり器
US8720072B2 (en) 2010-08-11 2014-05-13 Thomas J. Bucco Razor with three-axis multi-position capability
EP2591889B1 (en) * 2011-11-08 2015-09-16 Braun GmbH Electric shaver comprising a pivotable shaving head

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2099537A (en) * 1936-06-17 1937-11-16 Schmitt George Philip Razor and hair clipper
US3279056A (en) * 1964-10-28 1966-10-18 Andis Clipper Co Double-edge combination dry shaver and finishing hair clipper with adjustable head
NL154444B (nl) * 1966-10-27 1977-09-15 Constant Lodewijk Godefroy Scheerkop.
DE2035870B2 (de) * 1970-07-20 1977-01-20 Ausscheidung in: 20 65 855 Kuno Moser, GmbH, Fabrik für Feinmechanik und Elektrotechnik, 7731 Unterkirnach Elektrischer trockenrasierapparat mit langhaarschneideinrichtung
US4505036A (en) * 1982-03-15 1985-03-19 Kyushu Hitachi Maxell, Ltd. Electric shaver arranged to be tilted
DE3610736A1 (de) * 1986-03-29 1987-10-01 Braun Ag Elektrischer rasierapparat mit einem schwenkbaren scherkopfsystem
DE3721243A1 (de) * 1987-06-27 1989-01-12 Braun Ag Rasierapparat mit einem schwenkbaren scherkopfsystem
DE3726354A1 (de) * 1987-08-07 1989-02-16 Braun Ag Elektrischer rasierapparat mit scherkopfsteuerung
DE3729257A1 (de) * 1987-09-02 1989-03-23 Braun Ag Trockenrasierapparat mit einem kurzhaarschneidsystem und einem verschiebbaren langhaarschneidsystem
DE3917847C1 (ja) * 1989-06-01 1990-05-31 Braun Ag, 6000 Frankfurt, De
DE3926894C1 (ja) * 1989-08-16 1990-12-06 Braun Ag, 6000 Frankfurt, De

Also Published As

Publication number Publication date
JP2531474B2 (ja) 1996-09-04
ATE135618T1 (de) 1996-04-15
EP0532904A1 (de) 1993-03-24
DE59205742D1 (de) 1996-04-25
JPH05192453A (ja) 1993-08-03
US5235749A (en) 1993-08-17
ES2084891T3 (es) 1996-05-16
DE4128218C1 (ja) 1992-08-06
HK42097A (en) 1997-04-11
DK0532904T3 (da) 1996-07-29
US5343621A (en) 1994-09-06

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