EP0453718B1 - Tête de rasage, particulièrement une unité de lames pour rasoir mécanique - Google Patents

Tête de rasage, particulièrement une unité de lames pour rasoir mécanique Download PDF

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Publication number
EP0453718B1
EP0453718B1 EP91101820A EP91101820A EP0453718B1 EP 0453718 B1 EP0453718 B1 EP 0453718B1 EP 91101820 A EP91101820 A EP 91101820A EP 91101820 A EP91101820 A EP 91101820A EP 0453718 B1 EP0453718 B1 EP 0453718B1
Authority
EP
European Patent Office
Prior art keywords
razor
razor blade
base member
wire
platform
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
EP91101820A
Other languages
German (de)
English (en)
Other versions
EP0453718A1 (fr
Inventor
Wolfgang Althaus
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.)
Wilkinson Sword GmbH
Original Assignee
Wilkinson Sword 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 Wilkinson Sword GmbH filed Critical Wilkinson Sword GmbH
Publication of EP0453718A1 publication Critical patent/EP0453718A1/fr
Application granted granted Critical
Publication of EP0453718B1 publication Critical patent/EP0453718B1/fr
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
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/40—Details or accessories
    • B26B21/4006—Blades or blade units with discontinuous cutting edges, e.g. wire-wrapped, notches

Definitions

  • the invention relates to a razor head arranged at the front end of a handle, in particular a razor blade unit, a wet razor, in which a single or double razor blade is arranged in a plastic body comprising a base part and an upper part and a front guide bar and a rear cover cap a platform of the base part of the plastic body is fixed lying between this and the upper part of the plastic body fastened to the base part, the single or double razor blade being held on the platform of the base part by a winding with wire.
  • EP-A-0 357 821 which contains the features of the preamble of claim 1, discloses a so-called razor blade unit of a wet razor of this type, in which a double razor blade is arranged in a plastic body.
  • the plastic body has a base part, the front of which defines a guide bar and which has a platform on which a razor blade / spacer / razor blade unit is inserted from above during the assembly process. Then the base part together with the razor blade / spacer / razor blade unit is provided with a wire wrap, which covers both the cutting edges of the two razor blades and the guide bar. Finally, an upper part, which defines a cover cap, is pushed onto the base part from behind.
  • This razor blade unit is made up of three individual parts, which only form the razor blade unit after assembly form, namely the front guide bar of the base part, the razor blades and the cover cap. Thanks to these three separate parts, it is very difficult to achieve an optimal shaving geometry, since deviations from the target positions cannot be avoided. In this known razor blade unit, the wire wrapping also runs on the underside of the razor blade unit.
  • GB-A-2 171 630 discloses a so-called razor blade unit of a wet razor, in which a double razor blade is arranged in a plastic body.
  • the plastic body has a base part with a platform on which the double razor blade rests, the two razor blades of the double razor blade being arranged on both sides of a spacer arranged therebetween.
  • the double razor blade designed in this way and resting on the platform of the base part is fixed between the base part and an upper part of the plastic body which is placed on the base part.
  • This upper part has a front guide bar and a rear cover cap, which are connected to one another via side walls of the plastic housing and leave a central opening in the area of the cutting edges of the double razor blade.
  • the latter has pins on which the double razor blade with its spacer is placed on the one hand and on the other hand are fixed in corresponding recesses in the base part.
  • the invention is based on the object of further developing the known razor head in such a way that, while improving the holder with the wire winding in a simple assembly, the mutual geometric assignment between the guide bar, the (the) Razor blade (s) and the cap is improved and thus the shaving properties are improved.
  • the invention proposes that the base part has guide elements for the wire, distributed over the length both in the region of the front side and in the region of the rear side, with which the wire is guided back and forth in a zigzag pattern over the top of the base part, and that the front guide bar and the rear cap of the upper part are connected to one another via side strips formed by side walls of the upper part while leaving a central opening in the area of the cutting edge (s) of the razor blade (s) and the frame-like upper part thus formed is placed on the base part and connected to it.
  • the razor head designed in this way has the advantage that the mutual geometric arrangement between the front guide bar on the one hand and the rear cover cap on the other hand is fixed, since these are formed by an integral part, so that mutual installation deviations cannot occur.
  • the frame-like upper part has a relatively large area and in particular also has fastening points in the region of the front guide strip, this is technically possible without further ado.
  • the wire is guided zigzag back and forth over the top of the base part in the area of the pressing surface on the skin, the underside is completely free of the wire wrapping.
  • Corresponding fastening systems can be implemented with the razor blade units in particular.
  • these are designed as projections of the base part, around which the wire is guided.
  • the projections have a width which essentially corresponds to the intermediate distances between the projections. "Width of the projections” is to be understood as the length of the projections parallel to the cutting edge of the razor blade. With this configuration of the projections, these are offset with respect to one another with respect to the front and the rear of the plastic body, i.e. the protrusions on the front fill in the gaps of the protrusions on the back and vice versa. This ensures that the wire sections run parallel in the effective area.
  • a double razor blade it is proposed in a further development that the two razor blades are fastened to both sides of a spacer arranged therebetween, the razor blade / spacer / razor blade unit thus formed being inserted into the platform of the base part essentially from above and is held on the platform by the wire.
  • a razor head in the form of a so-called razor blade unit for a wet shaver which can be attached to the front end of a handle, not shown, consists of a plastic body 1 in which two razor blades 2 are arranged, the cutting edges 3 of which run parallel and offset one behind the other.
  • the plastic body 1 consists of a base part 4 with the razor blades 2 and an upper part 5 placed on this part 4.
  • the bite part 4 of the plastic body 1 initially has feed-through slots 6 on the inside.
  • the upper part 4 defines a platform 7 for the razor blades 2.
  • a spacer 8 is sandwiched between the two razor blades 2, the two razor blades 2 being firmly connected to this spacer 8. These thus form a razor blade / spacer / razor blade unit 9. This is placed on the platform 7 of the base part 4 from above, the spacer 8 projecting laterally for this purpose and being accommodated in side recesses 10 of the base part 4.
  • the unit 9 is held by means of a zigzag wire 11 which is guided over the top 12 of the unit 9 and thus the base part 4 of the plastic body 1.
  • the base part 4 has, on the front 13 in the lower region, downward-formed molded projections 14 which are designed as elongated strips.
  • the width of these projections 14 in the direction of the cutting edges 3 of the razor blades 2 essentially corresponds to the distance between the projections 14.
  • the projections 14 In the front area, the projections 14 have a raised extension 15.
  • the rear side 16 of the base part 4 has projections 14 ′ which are directed towards the rear. These projections 14 'fill in the gaps between the projections 14 of the front 13. Corresponding to the projections 14, the projections 14 ' also have projections 15' which, however, are directed downwards. Finally, fastening projections 17 are integrally formed on the rear side 16 of the base part 4.
  • the wire 11 is first fastened with its one end to a fastening projection 17. It is then guided forwards over the unit 9 to the projection 14 and around it, in order to then run back through 180 ° over the unit 9, where the wire 11 is guided around the projection 14 ′ there.
  • the wire 11 is guided one after the other around the projections 14 and 14 ′ in order to finally be attached at its other end to the fastening projection 17 on the other side of the base part 4.
  • the sections of the wire 11 run parallel to one another in the region of the upper side 12 and at substantially constant intervals.
  • the wire 11 on the one hand holds the unit 9 firmly on the platform 7 of the base part 4 and on the other hand prevents skin injuries.
  • the upper part 5 is a one-piece plastic component and initially has a front guide bar 18. This extends parallel to the cutting edges 3 of the razor blades 2 and has a step-like longitudinal profile 19.
  • a cover cap 20 is provided in the rear area.
  • This has a sliding strip 21 on the upper side. This is convexly curved and initially has a first glide strip leg 22 and a second glide strip leg 22 ′, which is angled at an acute angle thereto, which are connected to one another by an arc 23.
  • the angle between the sliding strip legs 22, 22 ' can also be rectangular or obtuse.
  • the two glide strip legs 22, 22 ' are essentially flat or slightly convex. The production of such a sliding strip 21 is possible by means of a special hot molding process.
  • this sliding strip 21 is also more effective at the end of the razor blade unit. Since the skin is stretched and pressed in during shaving, a bulge forms at the end of the razor blade unit. The sliding strip 21 shaped in the radius slides better in this area and thus increases the gentle shave.
  • the front guide bar 18 and the rear cover cap 20 are connected to one another by side walls 24. Between these parts there is an opening 25 in the area of the cutting edges 3 of the razor blades 2, as can be seen in particular from the top view according to FIG. 1.
  • Both the inside of the guide bar 18 and the inside of the cover cap 20 have receiving grooves 26 for the wire 11.
  • Recesses 27 are provided below the guide bar 18, which engage in a corresponding manner with the projections 14 of the base part 4.
  • the upper part 5 formed from the guide strip 18, the cover cap 20 and the side walls 24 has through openings 28 which correspond to corresponding through openings in the spacer 8.
  • the upper part 5 is plugged onto the base part 4 with the unit 9 fastened by the wire 11 and secured from above, for example by latching or in another way.
  • the wire 11 runs therein.
  • the course of the wire 11 in the area of the top 12 has the advantage that the bottom 29 of the plastic body 1 remains free and corresponding fastening systems can thus be provided.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Knives (AREA)

Claims (6)

  1. Tête de rasage, en particulier unité de lames, d'un rasoir mécanique, montée à l'extrémité avant d'un manche, dans laquelle une lame simple ou double (2) est disposée dans un corps en matière plastique (1) constitué d'une partie de base (4) et d'une partie supérieure et pourvu d'une barrette de guidage avant (18) et d'une coiffe arrière (20), ladite lame simple ou double (2) étant immobilisée à plat sur une plate-forme (7) de la partie de base (4) du corps en matière plastique (1) entre ladite plate-forme (7) et la partie supérieure (5) du corps en matière plastique (1) fixée à la partie de base (4), la lame simple ou double (2) étant maintenue sur la plate-forme (7) de la partie de base (4) par un enroulement en fil métallique (11), caractérisée en ce que, tant dans la zone du côté avant (13) que dans la zone du côté arrière (16), la partie de base (4) comporte, pour le fil métallique (11), des éléments de guidage qui sont répartis sur la longueur et au moyen desquels ledit fil métallique est guidé vers l'avant et vers l'arrière suivant un tracé en zigzag sur le dessus (12) de la partie de base (4), et en ce que la barrette de guidage avant (18) et la coiffe arrière (20) de la partie supérieure (5) sont reliées entre elles par des barrettes latérales formées par des parois latérales (24) de la partie supérieure (5), en ménageant une ouverture centrale (25) dans la zone de la ou des arêtes de coupe (3) de la ou des lames (2), et la partie supérieure en forme de cadre (5) ainsi formée est montée sur la partie de base (4) et y est reliée.
  2. Tête de rasage selon la revendication 1, caractérisée en ce que les éléments de guidage se présentent sous la forme de saillies (14, 14') de la partie de base (4), autour desquelles est enroulé le fil métallique (11).
  3. Tête de rasage selon la revendication 2, caractérisée en ce que la largeur des saillies (14, 14') correspond pour l'essentiel aux intervalles entre les saillies (14, 14').
  4. Tête de rasage selon l'une des revendications 1 à 3, caractérisée en ce que, dans la zone du coté arrière (16), la partie de base (4) comporte, à chacune de ses extrémités, une saillie de fixation (17) pour fixer les deux extrémités du fil métallique.
  5. Tête de rasage selon l'une des revendications 1 à 4, caractérisée en ce que le côté intérieur de la barrette de guidage (18) et de la coiffe (20) de la partie supérieure en forme de cadre (5), ledit côté intérieur étant tourné vers le fil métallique (11), comporte des stries réceptrices (26) pour le fil métallique.
  6. Tête de rasage selon l'une des revendications 1 à 5, munie d'une lame double, les deux lames (2) se trouvant de part et d'autre d'un élément d'écartement (8) disposé entre elles et étant fixées sur celui-ci, et l'unité lame/élément d'écartement/lame (9) ainsi formée étant mise en place, dans la partie de base (4), sensiblement par le haut sur la plate-forme (7) de la partie de base (4), caractérisée en ce que l'unité lame/élément d'écartement/lame (9) est maintenue sur la plate-forme (7) par le fil métallique (11).
EP91101820A 1990-04-27 1991-02-09 Tête de rasage, particulièrement une unité de lames pour rasoir mécanique Expired - Lifetime EP0453718B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9004762U 1990-04-27
DE9004762U DE9004762U1 (de) 1990-04-27 1990-04-27 Rasierapparatekopf, insbesondere Rasierklingeneinheit, eines Naßrasierapparates

Publications (2)

Publication Number Publication Date
EP0453718A1 EP0453718A1 (fr) 1991-10-30
EP0453718B1 true EP0453718B1 (fr) 1994-11-09

Family

ID=6853258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101820A Expired - Lifetime EP0453718B1 (fr) 1990-04-27 1991-02-09 Tête de rasage, particulièrement une unité de lames pour rasoir mécanique

Country Status (5)

Country Link
US (1) US5063669A (fr)
EP (1) EP0453718B1 (fr)
AT (1) ATE113888T1 (fr)
DE (2) DE9004762U1 (fr)
ES (1) ES2065559T3 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2264888B (en) * 1992-03-06 1995-01-25 Wilkinson Sword Gmbh Razor head with flow passages
GB2265327B (en) * 1992-03-06 1996-01-03 Wilkinson Sword Gmbh Razor head of a wet razor
GB2265328B (en) * 1992-03-13 1995-05-10 Wilkinson Sword Gmbh Razor head of a wet razor
JPH07303767A (ja) * 1994-05-13 1995-11-21 Feather Safety Razor Co Ltd 替え刃カートリッジ
USD379675S (en) * 1994-07-07 1997-06-03 Feather Safety Razor Co., Ltd. Safety razor cartridge
US6185823B1 (en) * 1995-11-10 2001-02-13 The Gillette Company Oval frame razor
US6161287A (en) * 1998-04-24 2000-12-19 The Gillette Company Razor blade system
US6584690B2 (en) * 2000-02-16 2003-07-01 Warner-Lambert Company Wet shaving assembly
US6996908B2 (en) * 2000-02-16 2006-02-14 Eveready Battery Company, Inc. Wet shaving assembly
US7370419B2 (en) 2000-02-16 2008-05-13 Eveready Battery Company, Inc. Replacement cartridge for a razor assembly
US7086159B2 (en) 2000-02-16 2006-08-08 Eveready Battery Company, Inc. Razor assembly
US7178241B1 (en) 2000-05-22 2007-02-20 Eveready Battery Company, Inc. Lubricating shaving assembly
US20050278954A1 (en) * 2002-04-24 2005-12-22 Eveready Battery Company, Inc. Shaving aid body for a safety razor
US7266895B2 (en) * 2002-04-24 2007-09-11 Eveready Battery Company, Inc. Razor assembly
US7162800B2 (en) * 2003-05-12 2007-01-16 Eveready Battery Company, Inc. Wet shaving assembly
US7103976B2 (en) * 2004-02-06 2006-09-12 Eveready Battery Company, Inc. Razor assembly

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2009017A (en) * 1977-12-02 1979-06-13 Warner Lambert Co Razor cartridges
DE8711506U1 (de) * 1987-08-25 1987-10-08 Wilkinson Sword GmbH, 5650 Solingen Rasierklingeneinheit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872592A (en) * 1974-01-30 1975-03-25 Philip Morris Inc Twin blade injector unit
US4084316A (en) * 1974-10-08 1978-04-18 The Gillette Company Safety razors
US4389773A (en) * 1981-04-30 1983-06-28 The Gillette Company Shaving implement
GB2110975B (en) * 1981-12-11 1985-06-19 Gillette Co Safety razors
IL74478A (en) * 1985-03-01 1988-04-29 America Israel Blades Ltd Razor blade unit
US4875287A (en) * 1986-11-14 1989-10-24 Hydromer, Inc. Shaving articles lubricious when wet and compositions therefor
DE3814135A1 (de) * 1987-05-06 1988-11-24 Wilkinson Sword Gmbh Verfahren zur herstellung einer hydrophilen beschichtung auf einem formteil und unter anwendung des verfahrens hergestellter rasierapparat
ES2027742T3 (es) * 1988-09-08 1992-06-16 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung Maquina de afeitar.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2009017A (en) * 1977-12-02 1979-06-13 Warner Lambert Co Razor cartridges
DE8711506U1 (de) * 1987-08-25 1987-10-08 Wilkinson Sword GmbH, 5650 Solingen Rasierklingeneinheit

Also Published As

Publication number Publication date
DE9004762U1 (de) 1991-08-29
ES2065559T3 (es) 1995-02-16
DE59103464D1 (de) 1994-12-15
US5063669A (en) 1991-11-12
ATE113888T1 (de) 1994-11-15
EP0453718A1 (fr) 1991-10-30

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