EP0453718A1 - 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
EP0453718A1
EP0453718A1 EP91101820A EP91101820A EP0453718A1 EP 0453718 A1 EP0453718 A1 EP 0453718A1 EP 91101820 A EP91101820 A EP 91101820A EP 91101820 A EP91101820 A EP 91101820A EP 0453718 A1 EP0453718 A1 EP 0453718A1
Authority
EP
European Patent Office
Prior art keywords
razor
razor blade
plastic body
base part
wire
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
EP91101820A
Other languages
German (de)
English (en)
Other versions
EP0453718B1 (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, 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, which ridges on a platform of a base part of the plastic body this and an upper part of the plastic body fastened to the base part is fixed.
  • 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 specified at the outset is known in various embodiments from the prior art.
  • a plastic body is always provided in which a single or double razor blade is embedded non-detachably.
  • This plastic body has a front guide bar and a rear cover cap.
  • the plastic body consists of a base part that defines a platform on the top, on which the single or double razor blade rests. It is fixed between this base part and an upper part of the plastic body, this upper part being the rear cover cap.
  • the single or double razor blade is held between the base part of the plastic body and the rear cover cap.
  • the front guide bar which belongs to the base part of the plastic body, is formed separately from the rear cover cap.
  • the razor geometry is defined by the arrangement of the front guide bar, the cutting edge (s) of the razor blade (s) and the rear cover cap, and since the known razor blade unit is made up of three individual parts, which are only after assembly form the razor blade unit, it is very difficult to achieve an optimal shaving geometry due to unavoidable deviations from the target positions of these three individual components.
  • the invention has for its object to provide a razor head, in particular a razor blade unit of a wet shaver of the type specified, in which the mutual geometric association between the guide bar, the razor blade (s) and the cover cap is improved with a simple assembly is.
  • the invention proposes that the front guide strip and the rear cover cap are connected to one another via side strips 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.
  • After arranging the single or double razor blade on the platform of the base part it is only necessary to plug the top part onto the base part essentially from above and to firmly connect it to the base part. This can be done, for example, by latching or in some other way.
  • 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 a one-piece part, so that mutual installation deviations cannot occur.
  • the frame-like upper part In order to create the correct geometric assignment for the third element, which also determines the shaving geometry, namely the razor blade (s), it is only necessary to fasten the frame-like upper part in an exact manner on the base part. However, since the frame-like upper part has a relatively large surface area and in particular also has fastening points in the region of the front guide strip, this is technically possible without further ado.
  • the side strips are preferably formed by side walls of the plastic body. This is the simplest way to connect the front guide bar and the rear cover cap to one another through a part of the plastic housing.
  • the guide strip has a step-like longitudinal profile.
  • a further development of the razor head according to the invention proposes that the single or double razor blade is held on the platform of the base part by wrapping with wire, the inside of the guide bar facing the wire and the cover cap of the frame-like upper part having receiving grooves for the wire.
  • This wire in the form of a protective wire has the advantage that it improves the shaving properties considerably.
  • it has the advantage that it holds the razor blade on the platform of the base part after the single or double razor blade has been placed on it, thus creating a first fixation.
  • the placement and fastening of the upper part on the base part only serves to finally fix the single or double razor blade within the plastic body.
  • the "wire wrap” is understood to mean that either a helical wrap is provided or that only the wire is zigzag back and forth over the top of the razor head in the area of the pressure surface on the skin, as will be described in the following embodiment .
  • a double razor blade it is proposed in a further development that the two razor blades are fastened on both sides of a spacer arranged therebetween, the razor blade / spacer / razor blade unit thus formed is essentially inserted into the platform of the plastic body from above and is held by the wire.
  • 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 region, downward-shaped 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 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 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, 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)
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 true EP0453718A1 (fr) 1991-10-30
EP0453718B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560239A1 (fr) * 1992-03-13 1993-09-15 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage pour rasor mécanique

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2288760B (en) * 1992-03-06 1996-01-03 Wilkinson Sword Gmbh Razor head of a wet razor
GB2264888B (en) * 1992-03-06 1995-01-25 Wilkinson Sword Gmbh Razor head with flow passages
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
US7086159B2 (en) 2000-02-16 2006-08-08 Eveready Battery Company, Inc. Razor assembly
US7370419B2 (en) * 2000-02-16 2008-05-13 Eveready Battery Company, Inc. Replacement cartridge for a razor assembly
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
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 (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084316A (en) * 1974-10-08 1978-04-18 The Gillette Company Safety razors
GB2110975A (en) * 1981-12-11 1983-06-29 Gillette Co Safety razors
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
EP0357821B1 (fr) * 1988-09-08 1991-11-06 Wilkinson Sword Gesellschaft mit beschränkter Haftung Rasoir

Family Cites Families (5)

* 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
US4170821A (en) * 1977-12-02 1979-10-16 Warner-Lambert Company Razor cartridges
US4389773A (en) * 1981-04-30 1983-06-28 The Gillette Company Shaving implement
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4084316A (en) * 1974-10-08 1978-04-18 The Gillette Company Safety razors
GB2110975A (en) * 1981-12-11 1983-06-29 Gillette Co Safety razors
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
EP0357821B1 (fr) * 1988-09-08 1991-11-06 Wilkinson Sword Gesellschaft mit beschränkter Haftung Rasoir

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560239A1 (fr) * 1992-03-13 1993-09-15 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage pour rasor mécanique
US5410812A (en) * 1992-03-13 1995-05-02 Warner-Lambert Company Razor head of a wet razor

Also Published As

Publication number Publication date
US5063669A (en) 1991-11-12
ES2065559T3 (es) 1995-02-16
DE59103464D1 (de) 1994-12-15
EP0453718B1 (fr) 1994-11-09
DE9004762U1 (de) 1991-08-29
ATE113888T1 (de) 1994-11-15

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