EP0345449B1 - Langhaarschneideinrichtung für Trockenrasierapparate - Google Patents

Langhaarschneideinrichtung für Trockenrasierapparate Download PDF

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Publication number
EP0345449B1
EP0345449B1 EP89107310A EP89107310A EP0345449B1 EP 0345449 B1 EP0345449 B1 EP 0345449B1 EP 89107310 A EP89107310 A EP 89107310A EP 89107310 A EP89107310 A EP 89107310A EP 0345449 B1 EP0345449 B1 EP 0345449B1
Authority
EP
European Patent Office
Prior art keywords
blade
long
cutting blade
seating edge
carrier body
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
EP89107310A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0345449A3 (en
EP0345449A2 (de
Inventor
Albrecht Jestädt
Klaus Oprach
Gerhard Schäfer
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 AT89107310T priority Critical patent/ATE79795T1/de
Publication of EP0345449A2 publication Critical patent/EP0345449A2/de
Publication of EP0345449A3 publication Critical patent/EP0345449A3/de
Application granted granted Critical
Publication of EP0345449B1 publication Critical patent/EP0345449B1/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
    • B26B19/10—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

Definitions

  • Long-hair cutting device for dry shavers with a shaving comb fixed to a housing with a contact surface for the contact surface of a blade blade, which is coupled via at least one driver to a support body that can be driven by a drive and at least one pressure spring that is supported on the one hand on the support body and on the other hand on the housing.
  • Such a long hair cutting device is known from DE-C-33 03 989.
  • Both the cutting combs and the blade blades of long-hair cutting devices are ground flat on the respective sides coming into contact with the cutting teeth in order to produce sharp cutting edges. Due to the relatively thin wall thickness of these cutting parts, with the release and removal of the cutting parts firmly clamped in the cutting device and ground flat, there is a material distortion in the form of a slight curvature which opposes a flat contact of the cutting parts over their entire longitudinal extent.
  • a long hair cutting device consisting of a shear comb fixedly arranged on a housing, a blade blade driven by a drive and a pressure lever acted upon by pressure springs and tiltably mounted in the housing, the lever arms of which are provided at the ends on the back - Rest and movable blade blade and keep it in contact with the shaving comb.
  • the object of the invention is to provide a long-hair cutting device of the type mentioned, in which, in the assembled state, an optimal contact of the interacting cutting areas of the shaving comb and the blade blade is automatically established over their longitudinal extent.
  • this object is achieved in a long-hair cutting device of the type mentioned in that a slightly protruding support edge made of plastic material with a tapering cross-sectional profile is provided on the support body on the side facing the cutting teeth of the blade blade, that the support edge is provided in entire area of the tooth base rests on the blade blade and that the blade blade can be brought into contact with the shaving comb by deformation of the support edge and blade blade by means of the pressure force exerted by the pressure spring on the support body on the support edge and the blade blade.
  • the solution according to the invention is characterized by a good installation of the cutting areas of the blade blade and shaving comb over their entire longitudinal extent, which automatically occurs in the assembled state of the long-hair cutting device, with the consequence of a substantially improved cutting performance.
  • the material distortion resulting from the manufacture of the blade blade and shaving comb is compensated for by deforming the support edge, which is made of a plastic material, and the blade blade.
  • the support edge is formed on the support body.
  • the cross-sectional profile of the contact edge is preferably triangular.
  • the support edge extending in the extension of the side wall of the support body, is provided on the upper side wall thereof.
  • the support edge is protruding from the upper side wall and the front side wall.
  • a particularly good contact of the cutting areas of the shaving comb and blade blade is achieved according to the invention in that the support edge is both elastically and plastically deformable.
  • the blade blade expediently has a low section modulus in the pressing direction of the pressing springs.
  • the shaving head frame of a dry shaving apparatus is denoted by 1, the housing, shown partly in section, by 2 and the front cheek by 3.
  • a support strip 4 extending in the longitudinal direction is formed on the inner wall of the housing wall 2.1.
  • the long-hair cutting device has a fixed shear comb 5, a movable blade blade 6 coupled to a support body 7 and pressure springs 8 which are supported on the support bar 4 and a fork 9 formed on the support body 7.
  • the long hair cutting device is shown in the operating state.
  • the displaceable drive lever 10 is located above the integrally formed drive bolt 11 in the U-shaped recess of the fork 9 and in this way transmits the oscillating movement of the drive lever 10 which is in the switched-on state to the movable shear blade.
  • the drive lever 10 By moving the drive lever 10 in the direction of arrow B, the drive pin 11 slides out of the fork 9, whereby the long-hair cutting device comes to a standstill.
  • the shaving foil 12 is held in the shaving head frame 1 in a known manner, while the fixed shaving comb 5, as can be seen in FIG. 2, is fastened by two screws or rivets 13 on a ledge 14 provided on the shaving head frame 1.
  • the housing wall 2.1 of the housing 2 of the shaving head frame ends just below the movable blade blade 6, so that here a narrow gap 27 is formed, through which the support body 7 is partially visible over the entire longitudinal extent.
  • the partial cut made in the housing wall 2.1 shows the drive lever 10 with the drive bolt 11, the fork 9, the support body 7, two pressure springs 8 and a guide bar 15, insofar as these are exposed by the partial cut.
  • the pressure springs 8 are supported on the support bar 4 shown in dashed lines, which is located on the inside of the housing wall 2.1 of the shaving head frame, and protrude with its opposite end into recesses 16 located on the support body 7. These recesses 16 define the position and the pressure point of the pressure springs in the support body 7 and also serve to guide and facilitate the assembly of these mutually engaging components. Preferably, four recesses 16 are provided in the support body 7 and four pressure springs in the long-hair trimmer shown.
  • a guide bar 15 is visible, the task of which is to keep the support body 7 in its sliding position, that is to prevent movement or migration of the support body 7 in the direction of arrow A according to FIG. 1.
  • the partial section shows, starting from the center line, only the right side of the support body 7 with the guide bar 15 and two pressure springs 8. It goes without saying that the left side is mirror-inverted.
  • a breakthrough is provided above the fork 9 on the support body 7, through which the driver 18 formed on the support body and via which the blade 6 is coupled to the support body is shown in a visible manner.
  • a two-point or three-point attachment of the blade on the support body 7 can be provided.
  • the receiving openings in the blade blade 6 are to be provided, with the driver and receiving openings engaging in the direction of movement C of the blade blade 6 without play.
  • a slightly protruding support edge 31 made of plastic material is formed with a cross-sectional profile that tapers to the blade blade 6.
  • the contact edge is formed so as to protrude from the upper side wall 33 and from the front side wall 34 of the support body 7 with a cross-sectional profile oriented at an acute angle to the blade sheet 6.
  • the cross-sectional profile of the contact edge 31 can also be triangular, as shown in FIG. 5, with a side wall extending in the extension of the front side wall 34 of the support body 7 and extending opposite the upper side wall 33 of the support body 7, molded onto the latter.
  • Fig. 4 shows the upper part of a support body 7 with a blade blade 6 arranged thereon, shown in section, in the preassembled state.
  • the blade blade 6 rests on the one hand on the support edge 31 and on the other hand on the upper side wall 33 of the supporting body 7, the tapering cross-sectional profile of the support edge 31 being in direct contact with the tooth base 32 of the cutting teeth 30.
  • the driver (s) formed on the upper side wall 33 on the support body 7 engage in receiving openings 21 provided in the blade sheet 6 for the purpose of taking the blade sheet with them.
  • the blade blade 6 executes under the influence of the pressure force exerted by the pressure spring 8 or the pressure springs 8 on the support body 7, via the support edge 31 is transferred to the blade blade, a pivoting movement.
  • the sound Sheet 6 stands out from the upper side wall 33 and with its contact surface 24 comes to rest against the contact surface 25 of the shaving comb 5 fastened to the housing 2.
  • the blade blade 6 is therefore held exclusively via the contact edge 31 in contact with the shaving comb 5.
  • the exemplary embodiment according to FIG. 3 shows the upper part of a switch slide 35 provided on a shaving apparatus and receiving the long-hair cutting device, by means of which the long-hair cutting device can be displaceably provided on the shaving apparatus.
  • the longitudinal ends of the angled shear comb 5 are fastened to the housing 2 of the slide switch 35 - not shown in the sectional view.
  • the support body 7 is slidably mounted between the housing wall 2.1 of the slide switch 35 and the angled wall 36 of the shear comb 5.
  • pressure springs 8 - of which only one is shown - which are supported on the support strip 4 of the housing wall 2.1 and on the other hand act on the supporting body 7 - their pressure force is transmitted to the blade blade 6 via the contact edge 31.
  • the blade blade 6 coupled to the driver 18 - as can be seen - is only in the assembled state by the support edge formed on the support body 31 worn.
  • the support edge 31, which tapers to the blade blade 6, lies in the area of the tooth base 32 on the blade blade 6 and brings about a good contact of the contact surfaces 24 and 25 of the blade blade and shaving comb under the action of the pressing force of the pressure springs 8, in particular in the cutting area of the cutting teeth 30 of the blade blade and the cutting teeth 37 of the shaving comb.
  • the support edge 31 which is made of a plastic material, extends over the entire length of the blade blade 6 and shear comb 5 and, by means of elastic and plastic deformation and a slight deflection of the blade blade, causes the contact surfaces 24 and 25 to lie perfectly over their entire longitudinal extent, in particular in the cutting area of the Cutting teeth 30 and 37.
  • the sliding surface 25 has a U-shaped recess 38 (FIG. 3) or an interruption, which can be produced, for example, by appropriate shaping of a shaving comb folded from a sheet metal strip (FIG. 1).

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Cosmetics (AREA)
EP89107310A 1988-06-04 1989-04-22 Langhaarschneideinrichtung für Trockenrasierapparate Expired - Lifetime EP0345449B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89107310T ATE79795T1 (de) 1988-06-04 1989-04-22 Langhaarschneideinrichtung fuer trockenrasierapparate.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3819055 1988-06-04
DE3819055A DE3819055A1 (de) 1988-06-04 1988-06-04 Langhaarschneideinrichtung fuer trockenrasierapparate

Publications (3)

Publication Number Publication Date
EP0345449A2 EP0345449A2 (de) 1989-12-13
EP0345449A3 EP0345449A3 (en) 1990-08-01
EP0345449B1 true EP0345449B1 (de) 1992-08-26

Family

ID=6355861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89107310A Expired - Lifetime EP0345449B1 (de) 1988-06-04 1989-04-22 Langhaarschneideinrichtung für Trockenrasierapparate

Country Status (6)

Country Link
US (1) US4932121A (enrdf_load_stackoverflow)
EP (1) EP0345449B1 (enrdf_load_stackoverflow)
JP (1) JP2693230B2 (enrdf_load_stackoverflow)
AT (1) ATE79795T1 (enrdf_load_stackoverflow)
DE (2) DE3819055A1 (enrdf_load_stackoverflow)
ES (1) ES2034466T3 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3925006C1 (enrdf_load_stackoverflow) * 1989-07-28 1990-10-31 Braun Ag, 6000 Frankfurt, De
US5405574A (en) * 1992-02-10 1995-04-11 Iap Research, Inc. Method for compaction of powder-like materials
US6047926A (en) 1996-06-28 2000-04-11 Alliedsignal Inc. Hybrid deicing system and method of operation
US6360992B1 (en) 1996-06-28 2002-03-26 Honeywell International Inc. Hybrid deicing system and method of operation
DE19944616C1 (de) * 1999-09-17 2000-12-28 Braun Gmbh Langhaarschneidsystem
US6972268B2 (en) 2001-03-29 2005-12-06 Gsi Lumonics Corporation Methods and systems for processing a device, methods and systems for modeling same and the device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222781A (en) * 1963-04-05 1965-12-14 Oster Mfg Co John Hair clipper
DE2836959C2 (de) * 1978-08-24 1983-04-28 Braun Ag, 6000 Frankfurt Langhaarscherteil, für Trockenrasierapparate
NL8204808A (nl) * 1982-12-13 1984-07-02 Philips Nv Haarknipapparaat.
DE3303989C2 (de) * 1983-02-05 1984-12-06 Braun Ag, 6000 Frankfurt Langhaarschneideinrichtung für Trockenrasierapparat

Also Published As

Publication number Publication date
JPH0226588A (ja) 1990-01-29
ATE79795T1 (de) 1992-09-15
EP0345449A3 (en) 1990-08-01
EP0345449A2 (de) 1989-12-13
DE58902122D1 (de) 1992-10-01
ES2034466T3 (es) 1993-04-01
JP2693230B2 (ja) 1997-12-24
DE3819055A1 (de) 1989-12-07
DE3819055C2 (enrdf_load_stackoverflow) 1990-07-12
US4932121A (en) 1990-06-12

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