EP0487537B1 - Messerblockkupplung für doppelkopfrasierer - Google Patents

Messerblockkupplung für doppelkopfrasierer Download PDF

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Publication number
EP0487537B1
EP0487537B1 EP90910558A EP90910558A EP0487537B1 EP 0487537 B1 EP0487537 B1 EP 0487537B1 EP 90910558 A EP90910558 A EP 90910558A EP 90910558 A EP90910558 A EP 90910558A EP 0487537 B1 EP0487537 B1 EP 0487537B1
Authority
EP
European Patent Office
Prior art keywords
shaving apparatus
drive member
dry shaving
spring element
bearing bore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90910558A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0487537A1 (de
Inventor
Helmut; Durr
Albrecht; Jestadt
Hans-Eberhard; Heintke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Braun GmbH
Original Assignee
Braun GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braun GmbH filed Critical Braun GmbH
Priority to AT90910558T priority Critical patent/ATE95459T1/de
Publication of EP0487537A1 publication Critical patent/EP0487537A1/de
Application granted granted Critical
Publication of EP0487537B1 publication Critical patent/EP0487537B1/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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3853—Housing or handle
    • B26B19/386—Means for attaching the head thereto
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
    • B26B19/10—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly
    • B26B19/102—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly with a secondary cutting unit being translated or slid into an operating position

Definitions

  • the invention relates to a dry shaving apparatus with a pair of parallel, elongated shaving heads, the lower knives of which are resiliently arranged on a common coupling element, the coupling element being detachably coupled to the drive element of the electric drive.
  • a dry shaver of the type mentioned is known from JP-U 57-135 365.
  • the drive for the two parallel lower knives consists of a single component, namely a swing bridge, a coupling element formed on the swing bridge and two drive pins formed on the coupling element, on which the lower knives are resilient stored and held by means of a clip connection.
  • a dry shaving apparatus with shaving heads running parallel to one another is known, the lower knives of which are arranged on a common coupling element.
  • the coupling element is resiliently mounted on the drive element and coupled to it via a swivel lock. This type of resilient support of the lower knives does not allow the respective lower knives to deflect separately during shaving, depending on the respective contact pressures acting differently on them.
  • the object of the invention is to provide a dry shaver of the type mentioned in such a way that its lower blades, together with a drive element of the dry shaver, are safe and easy to handle, can be coupled and uncoupled, while maintaining the resilient support and system associated with each lower blade or the upper knives.ISABELLE
  • this object is achieved in a device of the type mentioned above in that the coupling element is coupled to the drive element by means of a bearing bolt engaging in a bearing bore on a drive element, that the coupling element has at least one inclined surface in a bearing bolt provided on the bearing pin , prismatic groove engaging spring element is held in contact with the drive element, that the spring element rests resiliently on one of the inclined surfaces in the locked position, and that the locking element consisting of the spring element and prismatic groove is locked by means of one of the inclined surface of the prismatic groove against the spring element Pressure of the spring element is unlockable.
  • a particular advantage of this handling-friendly coupling of the two lower knives via a common coupling element - and thus while maintaining the resilient support and contact associated with each lower knife with the upper knife (s) - with a drive element of the electric drive is that this coupling connection for dry shavers with one pivotably mounted shaving head (Fig. 1, 2 and 3) as well as for a dry shaver with a removable on the housing, but otherwise immovably arranged shaving head can be used.
  • the coupling connection enables easy removal of the structural unit consisting of the two lower knives and the coupling element both for the purpose of replacement after the lower knives have worn out and for the purpose of better cleaning of this structural unit, including the respective shaving head frame.
  • a tolerance-independent and secure contact of the coupling element with the drive element is ensured in that the inclined surfaces of the prismatic groove on the bearing bolt are provided with a different pitch and the inclined surface with a smaller pitch is acted upon by the spring element in the coupled state of the coupling element and the drive element.
  • a particularly advantageous embodiment of the invention is characterized in that the bearing bore opens into a cavity provided in the drive element and that at least one spring arm protruding into the cavity is formed on the drive element as an extension of the bearing bore.
  • the drive element is part of a swing bridge arranged in the shaving head frame of the dry shaving apparatus. According to a further embodiment, the drive element is part of a swing bridge arranged in the housing of the dry shaving apparatus.
  • the drive element consists of an oscillating drive pin with a bearing bore arranged on its center axis and a groove recessed on the outside in the bearing bore wall for receiving the spring element, the groove partially cutting the interior of the bearing bore.
  • the spring element consists of a spring clip adapted to the shape of the groove and partially penetrating the interior of the bearing bore.
  • form-locking elements which can be brought into engagement and which determine the orientation of the lower knives are arranged on the coupling element and on the drive element.
  • two form-locking elements running parallel to the oscillating movement of the lower blades are expediently arranged on the coupling element and on the drive element in order to bring about an alignment of the two lower blades in the direction of vibration.
  • the coupling element and the drive element are each four interlocking elements arranged in such a way that the common center axis of the bearing bore and the bearing pin runs through the intersection of the perpendicularly intersecting directions of extension of the interlocking elements.
  • the extension of the inclined surface is preferably matched to the extension of the form-fitting elements in such a way that a change of the form-fitting elements in engagement with one another is ensured with the spring element lying against the inclined surface.
  • the interlocking elements are expediently formed from grooves and elevations of prismatic shape.
  • Fig. 1 is the upper part of a dry shaver, the housing with 1, the on and off switch with 2, the long hair trimmer with 3, the top of the housing with 4, which from the opening 5 in the Housing top 4 protruding drive pin with 6, the extending arm of the housing narrow sides 7 and 8 pivot arms with 9 and 10 and the shaving head 12 is pivotally mounted by means of bearing pins 11 in the bearing arms provided in the pivot arms with SK.
  • the shaving head SK shows a pair of shaving heads 14 and 15 running parallel to one another, which are formed by two lower knives 16 and 17 and by shaving foil 18 which is curved around these lower knives.
  • the lower cutters 16 and 17 are resiliently mounted on a common coupling element 19 - see FIG. 2.
  • the coupling element 19 is coupled to a drive element 47, which is part of a swing bridge mounted in the shaving head frame 21 - see FIGS. 2 and 3.
  • the latter is provided with two transverse ribs 22 and 23, in the intermediate space 24 of which the drive pin 6 engages.
  • the transverse ribs 22 and 23 of the swing bridge oscillate within the opening 26 provided in the base plate 25 of the shaving head frame 21 when the drive is switched on.
  • FIG. 2 shows a cross section through the pivotably mounted shaving head SK according to FIG. 1.
  • the two lower knives 16, 17 each rest against a shaving foil 18 which is arched in the shaving head frame 21 and which can also be formed in one piece.
  • the coupling element 19 consists of a base plate 27 with two molded-on, pot-like containers 28, 29 and the container covers 30, 31 surrounding them in a pot-like manner and the guide bolts 32, 33 arranged inside the containers 28, 29 and the container covers 30, 31, including those surrounding them Compression springs 34, 35.
  • the guide pin 32 is fastened in the container 28 and the guide pin 33 in the container 29.
  • a sliding bore 40, 41 for the respective guide pin 32, 33 is formed in the respective container lid 30, 31.
  • the container covers 30, 31 are coupled to the containers 28, 29 by means of a clip connection which enables the vertical up and down movement of the container lids 30, 31 - see FIG. 3.
  • the lower knives 16, 17 are each pivotably articulated by means of a coupling piece 36, 37 and articulated bolts 38, 39 arranged transversely to the longitudinal extent of the lower knives 16, 17 at the respective upper ends of the container lids 30, 31 - see FIGS. 2 and 3.
  • a bearing bolt 42 is fastened in the center to the two guide bolts 32, 33 and extends from the base plate 27 in the direction of the housing 1.
  • the bearing bolt 42 facing away from the base plate 27, the latter is provided with a circumferential, prismatic groove 43, the inclined surfaces 44, 45 of which have a different slope, the inclined surface 45 extending to the end of the bearing bolt 42 being provided with a smaller slope than the opposite one Sloping surface 44.
  • the bearing pin 42 extends through a bearing bore 48 provided in the cover plate 46 of the drive element 47.
  • two spring elements 49, 50 in the form of spring struts with molded-on locking cams 51, 52 are formed on the side of the cover plate 46 facing the housing 1.
  • interlocking elements 53 to 56 which can be brought into engagement, are respectively molded or formed on the cover plate 46 and on the base plate 27.
  • These form-locking elements preferably consist of prismatic projections 53, 54 which engage in appropriately shaped prismatic grooves 55, 56.
  • the interlocking form-locking elements 53 to 56 serve for a defined orientation of the lower knives 16 and 17 which are resiliently arranged on the coupling element 19 in the direction of vibration.
  • four interlocking form-fitting elements 53 to 60 are arranged on the coupling element 19 and on the drive element 47 in such a way that the common central axis M of bearing bolts 42 and bearing bore 48 through the intersection which extends at right angles intersecting directions of extension of the form-locking elements 53 to 60.
  • the engaged form-locking elements are mutually interchangeable with spring elements 49 resting on the inclined surface 45 via the latching cams 51, 52. 50 feasible.
  • Such a change for example a rotation of the coupling element by 90 °, brings about a corresponding adjustment of the lower knives 16, 17 with respect to their direction of oscillation and enables easy cleaning of the lower knives 16, 17 in the state coupled to the drive element 47 and of the interior of the shaving head frame 21 with the shaving foil removed 18.
  • the drive element 47 according to FIG. 2 is part of an oscillating bridge arranged in the pivotably mounted shaving head SK - see FIG. 1, which is described in more detail with reference to FIG. 3.
  • FIG. 3 corresponding to FIG. 1, the housing with 1, the swivel arms integrally formed on the housing with 9 and 10, the protruding from the opening 5 in the upper side 4 of the housing, into the intermediate space 24 of the transverse ribs 22 provided on the swing bridge designated with 61 , 23 protruding drive pin designated 6.
  • the bottom plate 27 closing the shaving head frame 21 is U-shaped.
  • the legs 66, 67 of the base plate 27 extend parallel to the end walls 62, 63 of the shaving head frame.
  • the swing bridge 61 consisting of two hanging spring arms 68, 69 and a plate 70 connecting the spring arms 68, 69 is fastened.
  • the base plate 27 has an opening 26 into which the transverse ribs 22, 23 of the swing bridge 61 protrude for the purpose of coupling with the drive pin 6.
  • the drive element 47 serving for coupling with the coupling element 19 is molded into the base plate 70 and is therefore part of the swing bridge 61.
  • the positive locking elements 57 to 60 are in engagement due to the coupled state of the coupling element 19 and the drive element 47.
  • the seal 71 is on the one hand on the drive element 47 and on the other hand attached to the inner wall 64 of the shaving head frame.
  • the shaving head SK is arranged immovably on the housing 1 of the dry shaving apparatus.
  • the structural design of the coupling element 19 and the lower knives 16 and 17 articulated by means of the coupling pieces 36, 37 corresponds to the design described in detail in FIG. 2.
  • the end of the oscillatingly driven drive element 47 which is used for coupling to the coupling element 19, projects through the opening 5 provided in the upper side 4 of the housing into the interior of the shaving head SK.
  • the drive element 47 consists of a drive pin with a bearing bore 48 arranged on its center axis M in the form of a blind hole and a groove 73 recessed on the outside in the bearing bore wall 72 for receiving a spring element 49.
  • the course of the groove 73 in the bearing bore wall 72 is designed such that this partially intersects the interior of the bearing bore 48, as is illustrated in more detail by the section AA in FIG. 4 in FIG. 5 with the reference numerals from FIG. 4.
  • the spring element 49 consists of a substantially U-shaped bow with a curved part 74 curved toward the bearing bore 48 for the purpose of partial engagement in the bearing bore 48.
  • the distance of the groove 73 from the cover plate 46 of the drive element 47 is such that at one in engagement with the bearing bore 48 of the bearing bolt 42 of the coupling element 19, the spring element 49 comes into contact with the inclined surface 45 of the prismatic groove 43 provided on the bearing bolt 42, in order to couple and securely engage the coupling element 19 by means of the spring action emanating from the spring element 49 and drive element 47 to accomplish.
  • the coupling element 19 with the lower knives 16 and 17 resiliently mounted on the latter can be easily removed from the drive element 47 against the spring pressure of the spring element 49.
  • the bearing pin 42 is tapered at the end in order to simplify its insertion into the bearing bore and also to facilitate the expansion of the spring element 49 when it is plugged together.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP90910558A 1989-08-16 1990-07-21 Messerblockkupplung für doppelkopfrasierer Expired - Lifetime EP0487537B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90910558T ATE95459T1 (de) 1989-08-16 1990-07-21 Messerblockkupplung fuer doppelkopfrasierer.

Applications Claiming Priority (2)

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

Publications (2)

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

Family

ID=6387134

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90910558A Expired - Lifetime EP0487537B1 (de) 1989-08-16 1990-07-21 Messerblockkupplung für doppelkopfrasierer

Country Status (5)

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

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4128220C1 (enrdf_load_stackoverflow) * 1991-08-26 1992-08-06 Braun Ag, 6000 Frankfurt, De
DE4128219A1 (de) * 1991-08-26 1993-03-04 Braun Ag Rasierapparat
DE4128218C1 (enrdf_load_stackoverflow) * 1991-08-26 1992-08-06 Braun Ag, 6000 Frankfurt, De
US5611145A (en) * 1991-12-20 1997-03-18 Wetzel; Matthias Dry-shaving apparatus
US5185926A (en) * 1992-02-07 1993-02-16 Remington Products, Inc. Multiple foil and cutting blade assembly for electric dry shavers
DE4303972C1 (de) * 1993-02-11 1993-10-14 Braun Ag Trockenrasierapparat mit einem schwenkbar gelagerten Scherkopfsystem
JPH0730972U (ja) * 1993-11-17 1995-06-13 三洋電機株式会社 往復式の電気かみそり
JP3716353B2 (ja) * 1995-07-31 2005-11-16 九州日立マクセル株式会社 ロータリ式電気かみそり
KR100543557B1 (ko) * 1997-10-30 2007-04-25 산요덴키가부시키가이샤 전기면도기
WO1999036233A1 (en) * 1998-01-20 1999-07-22 Wheel Technology Ltd. Electric razor with direct contact roller-mounted blades
JP3916509B2 (ja) * 2002-05-29 2007-05-16 株式会社泉精器製作所 電気かみそり
US7954243B2 (en) 2004-06-21 2011-06-07 Koninklijke Philips Electronics N.V. Hair cutting apparatus
DE602005023729D1 (de) 2004-06-21 2010-11-04 Koninkl Philips Electronics Nv Rasierapparat
DE102006010323A1 (de) * 2006-03-07 2007-09-13 Braun Gmbh Trockenrasierer mit schwenkbarem Scherkopf
EP2404715B1 (en) * 2010-07-10 2012-11-28 Braun GmbH Electrically operated shaver with replaceable cutting device
EP2875919A1 (en) * 2013-11-22 2015-05-27 Koninklijke Philips N.V. Hair cutting appliance, receptacle and connector plug
EP3300850B1 (en) * 2016-09-28 2019-10-23 Braun GmbH Electrically-driven razor

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044168A (en) * 1960-01-05 1962-07-17 Schick Inc Spring holding means for electric shaver shearing head
CH453947A (de) * 1966-07-29 1968-03-31 Kobler & Co Mehrteiliger Scherkopf für Trockenrasierapparat
US3858314A (en) * 1973-06-20 1975-01-07 Schick Inc Drive assembly for an electric shaver
US3931675A (en) * 1974-06-12 1976-01-13 Sperry Rand Corporation Electric dry shaver with releasable cutter head
US4001933A (en) * 1975-06-04 1977-01-11 Sperry Rand Corporation Cutter drive arrangement for an electric dry 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
US4233733A (en) * 1979-01-02 1980-11-18 Sunbeam Corporation Electric shaver
JPS57135365A (en) * 1981-02-16 1982-08-20 Toshiba Corp Watthour meter
JPS57135365U (enrdf_load_stackoverflow) * 1981-02-19 1982-08-24
US4700476A (en) * 1984-11-02 1987-10-20 Remington Products, Inc. Shaver for a medical treatment preparation procedure
DE3610736A1 (de) * 1986-03-29 1987-10-01 Braun Ag Elektrischer rasierapparat mit einem schwenkbaren scherkopfsystem
US4805300A (en) * 1986-09-17 1989-02-21 Remington Products, Inc. Electric dry shaver having an improved drive arrangement

Also Published As

Publication number Publication date
JPH088946B2 (ja) 1996-01-31
DE59003032D1 (de) 1993-11-11
WO1991002629A1 (de) 1991-03-07
EP0487537A1 (de) 1992-06-03
DE3926894C1 (enrdf_load_stackoverflow) 1990-12-06
JPH05500313A (ja) 1993-01-28
US5201781A (en) 1993-04-13

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