EP0453717B1 - 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
EP0453717B1
EP0453717B1 EP91101819A EP91101819A EP0453717B1 EP 0453717 B1 EP0453717 B1 EP 0453717B1 EP 91101819 A EP91101819 A EP 91101819A EP 91101819 A EP91101819 A EP 91101819A EP 0453717 B1 EP0453717 B1 EP 0453717B1
Authority
EP
European Patent Office
Prior art keywords
razor
wire
plastic body
head according
razor head
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
EP91101819A
Other languages
German (de)
English (en)
Other versions
EP0453717A1 (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 EP0453717A1 publication Critical patent/EP0453717A1/fr
Application granted granted Critical
Publication of EP0453717B1 publication Critical patent/EP0453717B1/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, of a wet razor, in which a single or double razor blade is arranged in a plastic body having a front guide strip and a rear cover cap, the area of the upper side defining the pressure surface on the skin of the razor head over the cutting edge (s) of the razor blade (s) parallel to the shaving direction and at a distance from each other sections of a wire, the plastic body both in the area of the front defined by the front guide bar and in the area of the rear cap. defined back over the length has guide elements for the wire.
  • a razor head which carries the single or double razor blade, is arranged at the front end of a handle.
  • the front shaver head can be formed in one piece with the handle in the form of a molded plastic part. If the razor head is formed separately from the handle and can be exchangeably attached to it by means of a corresponding mechanism, one speaks of a so-called razor blade unit in which a single or double razor blade is embedded in a plastic housing so that it cannot be detached.
  • a razor head in the form of such a razor blade unit of the type specified at the outset is known from DE-U-87 11 506.
  • the plastic body with the double razor blade embedded in it is wrapped with a wire with several turns lying next to one another, the individual turns in the area of the pressure surface of the razor blade unit against the skin running parallel to and at a distance from one another, while they run obliquely in the area of the underside of the plastic body .
  • This protective wire wrap significantly improves the shaving properties.
  • the wire prevents the formation of a skin fold, so that skin injuries are avoided even in the invisible area.
  • the wire reduces the shaving resistance required because it reduces the frictional force.
  • the protective wire prevents the user from accidentally cutting the razor blades if the razor blade assembly is handled improperly.
  • the wire also runs through the helical wrapping of the plastic body in the area of the underside of the razor blade unit, namely where the razor blade unit has to be attached to the handle.
  • the wire wrapping and the fastening mechanism interfere with each other.
  • the wire wrapping of the known razor blade unit there is a risk that the wire will shift laterally.
  • DE-A-19 09 989 discloses a wet shaver in which a razor blade is arranged in a razor head arranged at the front end of a handle.
  • a razor blade is arranged in a razor head arranged at the front end of a handle.
  • this is provided with a helical wire wrap and is thus inserted into the shaver head.
  • the wire is loop-shaped over the cutting edge guided by the razor blade, the wire initially being guided from the top over the cutting edge to the bottom.
  • the wire is then led forward again over the cutting edge to the top of the razor blade, from where the course is then repeated over the entire width of the razor blade.
  • the wire loops are fixed by means of a U-shaped clamping part, which is attached to the rear edge of the razor blade and covers the wire loops.
  • the object of the invention is to create a razor head, in particular a razor blade unit, with an improved wire winding.
  • the invention proposes that the wire be guided back and forth in a zigzag shape between the front and the back by means of the guide elements over the top of the shaver head.
  • a razor head designed according to this technical teaching and in particular a razor blade unit designed according to this technical teaching has the advantage that the underside of the plastic body remains free and the handle can thus be attached to the underside of the razor head without problems. With the razor blade units in particular, all possible fastening systems can thus be implemented. In addition, lateral movement of this wire is prevented in the course of the protective wire according to the invention. Under the "zigzag guidance" of the Wire should be understood to mean that the wire sections in the effective area run parallel to the shaving direction and in particular at the same distance from one another. Outside the effective range of the wire sections in the area of the front and the back of the plastic body, the wire is returned by 180 ° in order to create the back and forth.
  • these are designed as projections of the plastic body, around which the wire is guided.
  • These projections of the plastic body are to be formed in one piece with it, so that there are no manufacturing problems.
  • the wire is guided around the projections on the outside.
  • the projections can be of any design. For example, it is conceivable to provide, as a return for a wire section, for example two pins which are arranged at a distance from one another and whose distance essentially corresponds to the distance between the wire sections which are parallel to one another. In a preferred embodiment, however, the projections have a width which essentially corresponds to the intermediate distances between the projections.
  • the projections are thus designed as ramps or strips extending parallel to the cutting edge of the razor blade, the “width of the projections” being understood to mean the length of the projections parallel to the cutting edge of the razor blade.
  • the projections are offset with respect to one another with respect to the front and the back 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.
  • the plastic body preferably has a fastening projection for fastening the two wire ends at the end in the region of the rear side. This represents a technically very simple way of attaching the wire ends to the plastic body.
  • the razor blade is inserted essentially from the top onto a platform of the plastic body and is held by the wire.
  • the wire is used at the same time for fastening the razor blade on the platform, so that there is no need for any other fastening, for example in the form of riveting.
  • a double razor blade it is proposed in a further development that the two razor blades are attached to this on both sides of a spacer arranged therebetween, the razor blade / spacer / razor blade unit thus formed essentially from the top onto a platform of the plastic body therein is inserted and is held by the wire.
  • the advantages mentioned in the case of the single razor blade apply accordingly, in particular that riveting is eliminated by this fastening.
  • the razor head has a front guide strip, which is preferably provided with a step-like longitudinal profile, and a rear cover cap
  • the wire is guided underneath these parts in the region of the guide strip and the cover cap and is covered by them.
  • the wire thus runs between the guide bar or the cover cap and the actual plastic body with the blade platform.
  • the guide strip and the cover cap are connected to one another via side strips, in particular via side walls, while leaving a central opening in the area of the cutting edge (s) of the razor blade (s), and the upper part of the plastic body thus formed is on the base part of the plastic body with the razor blade (s) attached to a platform of the base part by means of the wire and firmly connected to it.
  • This one-piece upper part formed from the front guide strip, the rear cover cap and the side strips thus creates a simple assembly of the razor head and in particular the razor blade unit. After fastening the single or in particular double razor blade on the platform of the base part by means of the wire, only the upper part has to be plugged onto the base part essentially from above and firmly connected to it. This can be done, for example, by latching or in some other way.
  • the inner sides of the guide bar and the cover cap facing the wire have receiving grooves for the wire.
  • this has recesses which engage with the projections of the base part of the plastic body. This creates an optimal mutual association of the upper part with the base part of the plastic body.
  • the cover cap it is provided with a friction-reducing sliding strip.
  • this sliding strip is convexly curved with respect to the plastic body, the line of curvature extending parallel to the cutting edge of the razor blade, and in a preferred embodiment has a front, substantially flat or slightly convexly curved sliding strip leg and an angled rear, also essentially flat or with respect to the plastic body slightly convex curved sliding strip handle, which are connected by an arc.
  • the sliding strip bent over the cover cap can be created and applied using a special hot molding process.
  • the particular advantage is that the sliding strip is also more effective at the end of the razor head. Since the skin is stretched and pressed in during shaving, a bulge forms at the end of the shaver head.
  • the glide strip shaped in the radius glides optimally in this area and thus increases the gentle shave.
  • a razor head in the form of a so-called razor blade unit for a wet razor 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 base part 4.
  • the base part 4 of the plastic body 1 initially has lead-through slots 6 on the inside.
  • the base 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 area directed downward, 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 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 placed on the base part 4 with the unit 9 fastened by the wire 11 from above and secured, for example, by latching or in another way. Where the upper part 5 has receiving grooves 26 on the inside, 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 (13)

  1. Tête de rasage disposée à l'extrémité avant d'une poignée, notamment unité de lames pour rasoir mécanique, dans laquelle une lame de rasage simple ou double (2) est disposée dans un corps en matière plastique (1) comportant une moulure de guidage avant (18), ainsi qu'un capuchon de recouvrement arrière (20), des tronçons d'un fil mécanique (11) s'étendant dans la zone supérieure (12) de la tête de rasage constituant la surface d'application sur la peau, ces tronçons passant sur l'arête de coupe ou les arêtes de coupe (3) de la ou des lames de rasage (2) parallèlement à la direction de rasage et à distance l'un de l'autre, le corps en matière plastique (1) comportant des éléments de guidage du fil (11) répartis sur sa longueur aussi bien dans la zone du côté avant (13) défini par la moulure de guidage avant (18) que dans la zone du côté arrière (16) défini par le capuchon de recouvrement arrière (20), caractérisée en ce que le fil (11) est, au moyen des éléments de guidage, en passant sur la zone supérieure (12) de la tête de rasage, guidée vers l'avant et vers l'arrière en zigzag entre le côté avant (13) et le côté arrière (16).
  2. Tête de rasage selon la revendication 1, caractérisée en ce que les éléments de guidage sont constitués sous forme de saillies (14,14') du corps en matière plastique (1), le fil (11) étant guidé autour de ces saillies.
  3. Tête de rasage selon la revendication 2, caractérisée en ce que la largeur des saillies (14,14') est égale à l'intervalle entre ces saillies (14,14').
  4. Tête de rasage selon l'une des revendications 1 à 3, caractérisée en ce que le corps en matière plastique (1) comporte à chaque extrémité une saillie de fixation (17) pour fixer les deux extrémités du fil, ces saillies étant de préférence disposées dans la zone du côté arrière (16).
  5. Tête de rasage selon l'une des revendications 1 à 4 caractérisée en ce que la lame de rasage (2) est engagée dans le corps en matière plastique (1), par la zone supérieure (12) jusque sur un appui de lames (7) de ce corps et y est maintenue par le fil (11).
  6. Tête de rasage selon la revendication 5, dans laquelle il est prévu une lame de rasage double caractérisée en ce que les deux lames de rasage (2) sont fixées sur un support d'entretoisement (8) d'un côté et de l'autre de ce support disposé entre elles, l'unité (9) à lame de rasage/support d'entretoisement/lame de rasage ainsi formée étant engagée dans le corps en matière plastique (1) par la zone supérieure (12) jusque sur un appui de lames (7) de ce corps et y est maintenue par le fil (11).
  7. Tête de rasage selon l'une des revendications 1 à 6, comportant une moulure de guidage avant (18) présentant de préférence un profil longitudinal en escalier (19) ainsi qu'un capuchon de recouvrement arrière (20), caractérisée en ce que dans la zone de la moulure de guidage (18) et du capuchon de recouvrement (20), le fil (11) est guidé sous ces éléments et est recouvert par ceux-ci.
  8. Tête de rasage selon la revendication 7 caractérisée en ce que la moulure de guidage (18) et le capuchon de recouvrement (20) sont assemblés entre eux par l'intermédiaire de nervures latérales, notamment de parois latérales (24) en ménageant une ouverture médiane (25) dans la zone de l'arête de coupe ou des arêtes de coupe (3) de la ou des lames de rasage (2), la partie supérieure (5) du corps en matière plastique (1) ainsi formée étant posée sur la partie de base (4) de ce corps en matière plastique avec la ou les lames de rasage (2) fixées sur un appui de lames (7) de la partie de base (4) au moyen du fil (11), cette partie supérieure étant assemblée solidairement avec cette partie de base.
  9. Tête de rasage selon la revendication 7 ou la revendication 8, caractérisée en ce que les surfaces intérieures de la moulure de guidage (18) et du capuchon de recouvrement (20), dirigées vers le fil (11), présentent des rainures de réception (26) pour ce fil (11).
  10. Tête de rasage selon la revendication 2 ainsi que selon la revendication 8, caractérisée en ce que la partie supérieure (5) présente des évidements (27) qui engrènent avec les saillies (14,14') de la partie de base (4) du corps en matière plastique (1).
  11. Tête de rasage selon l'une des revendications 7 à 10, caractérisée en ce que le capuchon de recouvrement (20) est muni d'une bande de glissement (21).
  12. Tête de rasage selon la revendication 11, caractérisée en ce que la bande de glissement (21) est incurvée avec une forme convexe par rapport au corps en matière plastique (1), la ligne de courbure s'étendant parallèlement à l'arête de coupe (3) de la lame de rasage (2).
  13. Tête de rasage selon la revendication 12, caractérisée en ce que la bande de glissement (21) présente une branche de glissement avant (22) plane ou incurvée de façon légèrement convexe par rapport au corps en matière plastique (1) ainsi qu'une branche de glissement arrière (22') faisant un angle avec la première, également plane ou incurvée de façon légèrement convexe par rapport au corps en matière plastique (1), ces branches étant reliées l'une à l'autre par un arc.
EP91101819A 1990-04-27 1991-02-09 Tête de rasage, particulièrement une unité de lames pour rasoir mécanique Expired - Lifetime EP0453717B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9004760U DE9004760U1 (de) 1990-04-27 1990-04-27 Rasierapparatekopf, insbesondere Rasierklingeneinheit, eines Naßrasierapparates
DE9004760U 1990-04-27

Publications (2)

Publication Number Publication Date
EP0453717A1 EP0453717A1 (fr) 1991-10-30
EP0453717B1 true EP0453717B1 (fr) 1994-01-26

Family

ID=6853256

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91101819A Expired - Lifetime EP0453717B1 (fr) 1990-04-27 1991-02-09 Tête de rasage, particulièrement une unité de lames pour rasoir mécanique

Country Status (7)

Country Link
US (1) US5063668A (fr)
EP (1) EP0453717B1 (fr)
AT (1) ATE100753T1 (fr)
DE (2) DE9004760U1 (fr)
DK (1) DK0453717T3 (fr)
ES (1) ES2050464T3 (fr)
HK (1) HK65194A (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE121983T1 (de) * 1992-02-14 1995-05-15 Wilkinson Sword Gmbh Rasierapparatekopf, insbesondere rasierklingeneinheit, eines nassrasierapparates.
DE9201895U1 (de) * 1992-02-14 1993-06-17 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit, eines Naßrasierapparates
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
GB2265565B (en) * 1992-03-28 1995-03-22 Wilkinson Sword Gmbh Razor head of a wet razor
US5630275A (en) * 1994-08-23 1997-05-20 Warner-Lambert Company Multi-blade razor head with improved performance
US5456009A (en) * 1994-08-23 1995-10-10 Warner-Lambert Company Multi-blade razor head with improved performance
JP2952587B1 (ja) * 1998-03-30 1999-09-27 株式会社貝印刃物開発センター 安全かみそり
US20040181949A1 (en) * 2003-02-19 2004-09-23 Eveready Battery Company, Inc. Wet shaving cartridge with provision of shaving aid
JP2006521159A (ja) * 2003-03-26 2006-09-21 エヴァレディ バッテリー カンパニー インク 針金付き刃セットを備えたウェットシェービング装置
US7665199B2 (en) * 2008-01-23 2010-02-23 The Gillette Company Method of making a razor blade unit

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3505734A (en) * 1968-02-28 1970-04-14 Philip Morris Inc Cutting blade with self-contained guard
US3872592A (en) * 1974-01-30 1975-03-25 Philip Morris Inc Twin blade injector unit
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
DE8711506U1 (de) * 1987-08-25 1987-10-08 Wilkinson Sword GmbH, 5650 Solingen Rasierklingeneinheit
DE8811356U1 (de) * 1988-09-08 1988-10-20 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit
ES2027742T3 (es) * 1988-09-08 1992-06-16 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung Maquina de afeitar.

Also Published As

Publication number Publication date
DE9004760U1 (de) 1991-08-29
HK65194A (en) 1994-07-15
DK0453717T3 (da) 1994-05-30
ES2050464T3 (es) 1994-05-16
ATE100753T1 (de) 1994-02-15
US5063668A (en) 1991-11-12
EP0453717A1 (fr) 1991-10-30
DE59100928D1 (de) 1994-03-10

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