EP0453717A1 - 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
EP0453717A1
EP0453717A1 EP91101819A EP91101819A EP0453717A1 EP 0453717 A1 EP0453717 A1 EP 0453717A1 EP 91101819 A EP91101819 A EP 91101819A EP 91101819 A EP91101819 A EP 91101819A EP 0453717 A1 EP0453717 A1 EP 0453717A1
Authority
EP
European Patent Office
Prior art keywords
razor
wire
plastic body
razor blade
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.)
Granted
Application number
EP91101819A
Other languages
German (de)
English (en)
Other versions
EP0453717B1 (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, with the cutting edge (s) above the cutting edge (s) in the region of the upper side of the razor head which defines the pressure surface on the skin.
  • the razor blade (s) run parallel to the shaving direction and at a distance from each other sections of a 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 integrally formed with the handle in the form of a molded plastic part. If the razor head is designed 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 mentioned is known from DE-GM 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 contact 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 invention addresses the problem of providing a razor, in particular to provide an improved wire wrapping a razor blade unit.
  • the invention proposes that the plastic body both in the area of the front and also in the area of the rear over the length has guide elements for the wire, with which the wire is guided in a zigzag manner back and forth 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 therefore 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 displacement of this wire is prevented in the course of the protective wire according to the invention.
  • the “zigzag-shaped guidance” of the wire is 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 led around the outside of the projections.
  • 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 is essentially the distance between them corresponds to parallel wire sections. 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 the front and the back of the plastic body, ie the projections on the front fill the gaps of the projections 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 into the platform of the plastic body essentially from above 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 fastened to both sides of a spacer arranged therebetween, the razor blade / spacer / razor blade unit thus formed essentially from above onto a platform of the plastic body is inserted into it and is held by the wire.
  • the advantages mentioned in the case of the single razor blade apply accordingly, in particular that riveting is dispensed with 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 in the region of the guide strip and the cover cap is guided below these parts and 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, 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.
  • the upper part After attaching the single or in particular double razor blade on the platform of the base part by means of the wire, the upper part only 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.
  • cover cap it is provided with a friction-reducing sliding strip.
  • This sliding strip is preferably convexly curved and, in a preferred embodiment, has a front, essentially flat or slightly convexly curved sliding strip leg and an angled rear, also essentially flat or slightly convexly curved sliding strip leg, which are connected to one another 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 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 base part 4.
  • the base part 4 of the plastic body 1 initially has feed-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 received in lateral 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, formed 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 region, 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 the gaps between the projections 14 on 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. Then it is guided via the unit 9 to the front to the projection 14 and around it, in order to subsequently run back through 180 ° over the unit 9, where the wire 11 is guided around the projection 14 ′ there.
  • the wire 11 is guided in succession around the projections 14 and 14 ′ in order to finally be attached at its other end to the attachment 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, and 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 sliding 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 strip 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. Underneath the guide bar 18 there are recesses 27 which engage in a corresponding manner with the projections 14 of the base part 4. On the rear side, 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)
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 true EP0453717A1 (fr) 1991-10-30
EP0453717B1 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0556531A1 (fr) * 1992-02-14 1993-08-25 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage, particulièrement une unité de lames pour rasoir mécanique
EP0559129A1 (fr) * 1992-03-06 1993-09-08 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage pour rasoir mécanique
EP0563618A1 (fr) * 1992-03-28 1993-10-06 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage pour rasoir mécanique

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9201895U1 (de) * 1992-02-14 1993-06-17 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit, eines Naßrasierapparates
GB2265328B (en) * 1992-03-13 1995-05-10 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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909989A1 (de) * 1968-02-28 1970-01-22 Philip Morris Inc Schneidklinge mit damit verbundenem Klingenschutz
GB2171630A (en) * 1985-03-01 1986-09-03 America Israel Blades Limited Razor blade unit
DE8711506U1 (de) * 1987-08-25 1987-10-08 Wilkinson Sword GmbH, 5650 Solingen Rasierklingeneinheit
US4875287A (en) * 1986-11-14 1989-10-24 Hydromer, Inc. Shaving articles lubricious when wet and compositions therefor
EP0357821B1 (fr) * 1988-09-08 1991-11-06 Wilkinson Sword Gesellschaft mit beschränkter Haftung Rasoir

Family Cites Families (3)

* 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
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
DE8811356U1 (de) * 1988-09-08 1988-10-20 Wilkinson Sword GmbH, 5650 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1909989A1 (de) * 1968-02-28 1970-01-22 Philip Morris Inc Schneidklinge mit damit verbundenem Klingenschutz
GB2171630A (en) * 1985-03-01 1986-09-03 America Israel Blades Limited Razor blade unit
US4875287A (en) * 1986-11-14 1989-10-24 Hydromer, Inc. Shaving articles lubricious when wet and compositions therefor
DE8711506U1 (de) * 1987-08-25 1987-10-08 Wilkinson Sword GmbH, 5650 Solingen Rasierklingeneinheit
EP0357821B1 (fr) * 1988-09-08 1991-11-06 Wilkinson Sword Gesellschaft mit beschränkter Haftung Rasoir

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0556531A1 (fr) * 1992-02-14 1993-08-25 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage, particulièrement une unité de lames pour rasoir mécanique
US5305526A (en) * 1992-02-14 1994-04-26 Wilkinson Sword Gesellschaft Mit Beschrankter Haftung Razor head, especially razor blade unit of a wet razor
EP0559129A1 (fr) * 1992-03-06 1993-09-08 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage pour rasoir mécanique
EP0559130A1 (fr) * 1992-03-06 1993-09-08 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage pour rasoir mécanique
US5447084A (en) * 1992-03-06 1995-09-05 Althaus; Wolfgang Razor head of a wet razor
EP0563618A1 (fr) * 1992-03-28 1993-10-06 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage pour rasoir mécanique
US5359774A (en) * 1992-03-28 1994-11-01 Warner-Lambert Company Razor head of a wet razor

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
EP0453717B1 (fr) 1994-01-26
DE59100928D1 (de) 1994-03-10

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