EP0521294A1 - Tête de rasage, en particulier une unité de lames pour rasoir mécanique - Google Patents

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

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Publication number
EP0521294A1
EP0521294A1 EP92108766A EP92108766A EP0521294A1 EP 0521294 A1 EP0521294 A1 EP 0521294A1 EP 92108766 A EP92108766 A EP 92108766A EP 92108766 A EP92108766 A EP 92108766A EP 0521294 A1 EP0521294 A1 EP 0521294A1
Authority
EP
European Patent Office
Prior art keywords
razor
head according
razor head
guide bar
blade block
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
EP92108766A
Other languages
German (de)
English (en)
Other versions
EP0521294B1 (fr
Inventor
Wolfgang Althaus
Michael Schwarz
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 EP0521294A1 publication Critical patent/EP0521294A1/fr
Application granted granted Critical
Publication of EP0521294B1 publication Critical patent/EP0521294B1/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
    • B26B21/08—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 involving changeable blades
    • B26B21/14—Safety razors with one or more blades arranged transversely to the handle
    • B26B21/22—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously
    • B26B21/222—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit
    • B26B21/227—Safety razors with one or more blades arranged transversely to the handle involving several blades to be used simultaneously with the blades moulded into, or attached to, a changeable unit with blades being resiliently mounted in the changeable unit

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 resiliently arranged in a plastic housing having a front guide strip.
  • a single or double razor blade is embedded in the shaver head in a plastic housing. If the razor head is designed separately and can be attached to a handle, for which purpose the handle and the razor head have interlocking devices that correspond to one another, this is referred to as a so-called razor blade unit.
  • a plastic housing with a front guide bar is provided.
  • two razor blades are each resiliently arranged to form a double razor blade.
  • the two razor blades each rest on lateral spring tongues so that they can adapt to the contour of the face during the shave.
  • a disadvantage of this known system is that the angle and thus the setting of the razor blades does not remain constant during the shave. Undesired vibrations or movements can occur in the respective razor blade, which can be the cause of unsatisfactory cutting performance.
  • the object of the invention is to create a razor head, in particular a razor blade unit of a wet razor, with an improved spring mounting of the single or double razor blades.
  • the invention proposes that the single or double razor blade be fastened to a blade block which is mounted in the plastic housing so as to be pivotable about an axis parallel to the guide bar against the spring force.
  • a razor head designed according to this technical teaching in particular a razor blade unit of a wet razor with the single or double razor blade attached to a blade block, has the advantage of an improved spring suspension.
  • the two individual razor blades fastened parallel to one another can be pivoted parallel and thus synchronously.
  • the decisive advantage of this system is that the angle and thus the position of the razor blades remains constant during shaving and because of the precise technical guidance, undesirable vibrations or movements in the blade are avoided, so that optimal cutting performance can be achieved.
  • the axis is preferably in the region of the guide bar. This allows the blade block with the single or double razor blade attached to it to pivot into the plastic housing during shaving.
  • the blade block is firmly connected to the guide bar and the unit formed from the blade block and the guide bar can be pivoted about an axis which runs through the guide bar.
  • the guide strip can have a preferably round cross-sectional profile, in the center of which the axis runs.
  • the guide bar is preferably provided with a structure.
  • the blade block is fixedly connected to a bar and that the unit formed from the blade block and the bar is pivotable about an axis which runs through the bar arranged below the fixed guide bar.
  • part of the guide bar namely the upper area of the guide bar is injection-molded onto the plastic housing, for example an upper blade shell, while the lower area of the guide bar can be pivoted together with the blade block.
  • the bar has a preferably round partial cross-sectional profile such that the axis runs in the center and that the outer surface forms an essentially continuous transition with respect to the guide bar. This creates an optimal design of the guide bar, which optimally fulfills the demands placed on it.
  • the guide strip or the strip of the unit has lateral pins, by means of which the unit is pivotably mounted in the side walls of the plastic housing. This provides a technically very simple possibility of being able to pivotally mount the unit together with the guide bar or the bar in the plastic housing.
  • a preferred development of the unit suggests that it has openings. Have these breakthroughs the advantage that during shaving the shaving foam can pass through for better removal, the plastic housing being provided in its lower region with corresponding openings or recesses, so that unhindered passage of the shaving foam is ensured. The openings also facilitate cleaning of the shaver head.
  • a compression spring is arranged between the blade block and the bottom of the plastic housing.
  • Such a compression spring supported between the blade block and the bottom has the advantage that a resilient mounting of the blade block within the plastic housing is ensured in a technically simple manner.
  • the compression spring is preferably a curved leaf spring. This can be used - bent accordingly - before the razor head, in particular the razor blade unit, is installed in the lower region of the plastic housing.
  • the leaf spring can consist of metal or plastic. Instead of the leaf spring, the compression spring can also be formed by a correspondingly bent wire.
  • leaf spring suggests that it can be curved several times, i.e. there is a curvature of the others. This creates an even contact surface for the blade block.
  • the razor head has a plunger extending through the lower housing base, so that the spring component can also be omitted.
  • the pivoting movement of the blade block is preferably limited on the upper side by a cover cap of the plastic housing. As a result, the starting position of the blade block and thus the starting geometry is clearly specified.
  • the plastic housing consists of a composable lower part and upper part, between which the blade block is optionally arranged as a separate component with the guide strip or strip connected to it.
  • the blade block has a cam on the rear, which is guided outwards through an opening in the rear wall of the plastic housing.
  • the cam is preferably arranged in the central region of the razor head.
  • FIGS. 6 to 10 show a first embodiment and FIGS. 6 to 10 a second embodiment of a razor blade unit.
  • the first embodiment of the razor blade unit shown in FIGS. 1 to 5 consists of a plastic housing 1.
  • This is composed of a lower part 2 and an upper part 3, which can be placed on top of one another and connected to one another, for example welded, glued, locked, plugged into one another, etc.
  • a blade block 4 is pivotally mounted between the lower part 2 and the upper part 3 of the plastic housing 1.
  • two razor blades 5 are attached to this blade block 4 to form a double razor blade, for example glued or welded on.
  • the blade block 4 Via a connecting part 6, which has openings 7, the blade block 4 is integrally connected to a guide bar 8, so that the blade block 4, the connecting part 6 and the guide bar 8 form a unit.
  • the guide bar 8 has a round cross-sectional profile.
  • the guide bar 8 is provided with integrally formed pins 9, by means of which the unit is pivotably mounted in corresponding recesses 10 in the two side walls 11 of the plastic housing 1.
  • the blade block 4 is resiliently mounted within the plastic housing 1.
  • a compression spring 14 in the form of a leaf spring is supported between the bottom 12 of the lower part 2 of the plastic housing 1 in a corresponding recess 13 and the underside of the blade block 4. This presses the blade block 4 upwards into contact with an upper cover cap 15 of the upper part 3 of the plastic housing 1.
  • the compression spring 14 is curved several times, ie it rests on the base 12 with two points, while the blade block 4 rests on three arches.
  • the blade block 4 has a cam 17 on the rear, which is guided outwards through an opening 18 in the rear wall of the plastic housing 1.
  • This opening 18 in the rear wall of the plastic housing 1 is formed in that the lower part 2 has an upper-side recess which defines the opening 18 after the upper part 3 has been put on.
  • the blade block 4 can be easily actuated from the outside by means of this cam 17, which considerably improves the cleaning of the razor blades 5.
  • the blade block 4 shows the basic position of the razor blade unit, ie the blade block 4 is in its uppermost position, in which it rests on the cover cap 15 on the underside and is pressed against the latter due to the compression spring 14.
  • pressure is exerted on the blade block 4, which pivots it against the force of the compression spring 14 about the axis A defined by the pins 9 into the interior of the plastic housing 1, as indicated by the arrow P in FIG. 5.
  • This pivoting movement of the blade block 4 is supported in that a corresponding torque is exerted on the guide bar 8 during the shaving process.
  • the guide bar 8 leading the razor blades 5 assumes an active function, namely that this guide bar 8 transmits the frictional forces occurring during shaving to the blade block 4 and pivots it.
  • the guide bar 8 can be provided with a structure which ensures an optimal transmission of the forces during shaving, which is dependent not only on the individual shaving behavior but also on the shaving aids used.
  • this structure can be a longitudinal corrugation running parallel to the axis A.
  • FIGS. 6 to 10 A somewhat modified second embodiment is shown in FIGS. 6 to 10. This embodiment differs from the first embodiment in two points.
  • the guide bar 8 is designed to be rotatable within the plastic housing 1
  • the actual guide bar 8 is molded onto the upper part 3 of the plastic housing 1 and is thus stationary.
  • an additional bar 16 is provided, which is also connected in one piece to the blade block 4 via the connecting part 6.
  • This bar 16 has lateral pins 9, by means of which the unit formed from the blade block 4, the connecting part 6 and the bar 16 is pivotally mounted within the plastic housing 1 in a manner corresponding to that in the first embodiment.
  • the second difference is the design of the compression spring 14. While this is a multi-curved leaf spring in the first embodiment, the second embodiment is also a leaf spring, but this is only curved, as can be seen in particular in FIG. 7 .
  • the pivoting movement of the blade block takes place in the same way as in the first embodiment.
  • the blade block 4 In the basic position (FIG. 9), the blade block 4 is pressed against the underside of the cover cap 15 by the compression spring 14.
  • the top of the connecting part 6 lies flat against the flat underside of the guide bar 8.
  • a pressure is applied during the shave, which causes the blade block 4 to pivot downward, as indicated by the arrow P in FIG. 10.
  • the flat one is in the lowest position Top of the bar 16 on the bottom of the guide bar 8 and forms a movement limitation.
  • the flat upper side of the connecting part 6 is somewhat angled with respect to the flat upper side of the strip 16. In this second embodiment, however, the guide bar does not take on an active function in terms of the transmission of forces from the guide bar 8 to the blade block 4 during shaving.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
EP92108766A 1991-07-03 1992-05-25 Tête de rasage, en particulier une unité de lames pour rasoir mécanique Expired - Lifetime EP0521294B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9108214U 1991-07-03
DE9108214U DE9108214U1 (de) 1991-07-03 1991-07-03 Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Naßrasierapparates

Publications (2)

Publication Number Publication Date
EP0521294A1 true EP0521294A1 (fr) 1993-01-07
EP0521294B1 EP0521294B1 (fr) 1996-11-06

Family

ID=6868942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92108766A Expired - Lifetime EP0521294B1 (fr) 1991-07-03 1992-05-25 Tête de rasage, en particulier une unité de lames pour rasoir mécanique

Country Status (9)

Country Link
US (1) US5251376A (fr)
EP (1) EP0521294B1 (fr)
JP (1) JP3326623B2 (fr)
AT (1) ATE144933T1 (fr)
BR (1) BR9202600A (fr)
DE (2) DE9108214U1 (fr)
ES (1) ES2093737T3 (fr)
GR (1) GR3021571T3 (fr)
RU (1) RU2085312C1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010472A1 (fr) * 1994-09-30 1996-04-11 Warner-Lambert Company Tete de rasoir dynamique
EP1985418A1 (fr) * 2006-02-14 2008-10-29 Kai R & D Center Co., Ltd. Rasoir
EP1990143A1 (fr) * 2006-02-14 2008-11-12 Kai R&D Center Co., Ltd. Rasoir
WO2014139655A3 (fr) * 2013-03-12 2014-11-06 Hidde Axel R Rasoir mécanique à structure simplifiée

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5416974A (en) * 1990-03-27 1995-05-23 The Gillette Company Safety razors and blade units therefor
DE9205955U1 (de) * 1992-05-02 1993-09-09 Wilkinson Sword Gmbh, 42659 Solingen Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Naßrasierapparates
US5347714A (en) * 1993-02-18 1994-09-20 American Safety Razor Company Movable blade shaving cartridge
US5341571A (en) * 1993-04-16 1994-08-30 American Safety Razor Company Movable blade shaving cartridge or the like
US5590468A (en) * 1993-04-16 1997-01-07 American Safety Razor Company Movable blade shaving cartridge with conditioning bar
US5461781A (en) * 1994-07-01 1995-10-31 Warner-Lambert Company Dynamic shaving system with integral push clean bar and spring member
IL112644A0 (en) * 1995-02-14 1995-05-26 Avidor Joseph Shaving apparatus and method of shaving
US5933960A (en) * 1995-03-23 1999-08-10 Avidor; Joseph Shaving apparatus and method of shaving
US6295734B1 (en) 1995-03-23 2001-10-02 The Gillette Company Safety razors
GB9505917D0 (en) † 1995-03-23 1995-05-10 Gillette Co Safety razors
AU2129597A (en) * 1996-03-27 1997-10-17 Warner-Lambert Company Shaving system with uniform shaving forces
GB9616402D0 (en) * 1996-08-05 1996-09-25 Gillette Co Safety razors
US6173498B1 (en) 1996-08-05 2001-01-16 The Gillette Company Razor
US6009623A (en) † 1997-10-02 2000-01-04 Warner-Lambert Company Razor with in situ sensor
JP3209975B2 (ja) * 1999-03-18 2001-09-17 株式会社貝印刃物開発センター 安全かみそり
DE60001815T2 (de) * 1999-11-29 2003-12-04 Koninkl Philips Electronics Nv Rasierer versehen mit einem rasierkopf, einem hilfsrahmen und einem hauptrahmen
US20040020053A1 (en) * 2000-10-16 2004-02-05 The Gillette Company Safety razors
GB0025336D0 (en) * 2000-10-16 2000-11-29 Gillette Co Safety razors
AU2007200550B2 (en) * 2000-10-16 2009-03-26 The Gillette Company Safety razors
US6560881B2 (en) * 2001-02-28 2003-05-13 Warner-Lambert Company Shaving razor with pivoting blade carrier and replaceable blade cartridge therefor
CA2391520A1 (fr) * 2001-07-02 2003-01-02 David Charles Coffin Rasoir equipe de lames statiques et dynamiques
DE60203153T2 (de) * 2001-10-22 2006-01-26 Eveready Battery Co., Inc. Rasiergerät
AU2003212586A1 (en) * 2002-05-16 2003-12-02 Warner-Lambert Company Llc Razor cartridge mounting structure
US6763590B2 (en) 2002-10-21 2004-07-20 Eveready Battery Company, Inc. Razor assembly having a clutch controlled shaving aid delivery system
AU2004208986B2 (en) * 2003-01-28 2008-04-10 Edgewell Personal Care Brands, Llc Razor blade platform and razor cartridge using same
CN1890065B (zh) * 2003-12-10 2011-07-13 皇家飞利浦电子股份有限公司 具有皮肤舒展部件的剃头
EP1711319B1 (fr) * 2004-01-26 2008-10-15 Koninklijke Philips Electronics N.V. Rasoir de surete comprenant un organe de guidage reglable
US7748121B2 (en) * 2005-05-06 2010-07-06 Eveready Battery Company, Inc. Razor blade and support assembly
JP4950507B2 (ja) 2006-02-14 2012-06-13 株式会社貝印刃物開発センター 剃刀
US7770294B2 (en) * 2007-08-30 2010-08-10 The Gillette Company Razor with blade unit biasing member
WO2012070038A1 (fr) * 2010-11-22 2012-05-31 Benny Barak Appareil d'épilation manuelle
US10406704B2 (en) * 2014-10-06 2019-09-10 OneBlade, Inc. Razor apparatus and shaving system
US10807257B2 (en) * 2015-12-17 2020-10-20 Bic-Violex Sa Shaving head
JP6900473B2 (ja) * 2016-10-25 2021-07-07 ワンブレード，インコーポレイテッド 単刃レイザ器具
US10538005B2 (en) 2016-10-25 2020-01-21 OneBlade, Inc. Single-blade razor apparatus
USD977718S1 (en) 2020-06-19 2023-02-07 The Gillette Company Llc Shaving razor handle
US11648694B2 (en) 2020-06-19 2023-05-16 The Gillette Company Llc Shaving razor system
US11691305B2 (en) 2020-06-19 2023-07-04 The Gillette Company Llc Shaving razor blade carrier
USD967528S1 (en) 2020-06-19 2022-10-18 The Gillette Company Llc Shaving razor cartridge
USD961848S1 (en) 2020-06-19 2022-08-23 The Gillette Company Llc Blade carrier for a shaving razor
US11648695B2 (en) 2020-06-19 2023-05-16 The Gillette Company Llc Shaving razor cartridge
US11389981B2 (en) 2020-06-19 2022-07-19 The Gillette Company Llc Method of manufacturing a blade carrier assembly
US12005595B2 (en) 2021-01-29 2024-06-11 The Gillette Company Llc Razor cartridge with a rotatably attached housing portion
RU2764448C1 (ru) * 2021-05-27 2022-01-17 Сергей Валерьевич Синицкий Кассета для бритвы

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461079A (en) * 1982-06-01 1984-07-24 Warner-Lambert Company Method and apparatus for changing the shaving attitude of a blade package
CH647450A5 (en) * 1982-06-18 1985-01-31 Wilkinson Sword Ltd Blade assembly for razor
EP0312663A1 (fr) * 1987-10-21 1989-04-26 Warner-Lambert Company Ensemble à lames
EP0416233A1 (fr) * 1989-09-02 1991-03-13 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage de rasoir mécanique

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US3783510A (en) * 1971-10-22 1974-01-08 Warner Lambert Co Razor having tandemly mounted blades bonded in a disposable cartridge
GB1531003A (en) * 1975-05-29 1978-11-01 Gillette Co Shaving units
JPS55109788A (en) * 1979-02-14 1980-08-23 Hitachi Ltd Feed pump control system
JPS588864B2 (ja) * 1979-02-19 1983-02-17 株式会社貝印刃物開発センター かみそり
IE52777B1 (en) * 1981-05-19 1988-02-17 Wilkinson Sword Ltd Razors and shaving units for razors
US4501067A (en) * 1982-04-03 1985-02-26 Wilkinson Sword Limited Razors and shaving units for razors

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461079A (en) * 1982-06-01 1984-07-24 Warner-Lambert Company Method and apparatus for changing the shaving attitude of a blade package
CH647450A5 (en) * 1982-06-18 1985-01-31 Wilkinson Sword Ltd Blade assembly for razor
EP0312663A1 (fr) * 1987-10-21 1989-04-26 Warner-Lambert Company Ensemble à lames
EP0416233A1 (fr) * 1989-09-02 1991-03-13 Wilkinson Sword Gesellschaft mit beschränkter Haftung Tête de rasage de rasoir mécanique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010472A1 (fr) * 1994-09-30 1996-04-11 Warner-Lambert Company Tete de rasoir dynamique
EP1985418A1 (fr) * 2006-02-14 2008-10-29 Kai R & D Center Co., Ltd. Rasoir
EP1990143A1 (fr) * 2006-02-14 2008-11-12 Kai R&D Center Co., Ltd. Rasoir
EP1985418A4 (fr) * 2006-02-14 2010-03-24 Kai R&D Center Co Ltd Rasoir
EP1990143A4 (fr) * 2006-02-14 2010-03-24 Kai R&D Center Co Ltd Rasoir
WO2014139655A3 (fr) * 2013-03-12 2014-11-06 Hidde Axel R Rasoir mécanique à structure simplifiée

Also Published As

Publication number Publication date
ES2093737T3 (es) 1997-01-01
BR9202600A (pt) 1993-03-16
DE59207475D1 (de) 1996-12-12
EP0521294B1 (fr) 1996-11-06
JP3326623B2 (ja) 2002-09-24
ATE144933T1 (de) 1996-11-15
RU2085312C1 (ru) 1997-07-27
US5251376A (en) 1993-10-12
DE9108214U1 (de) 1992-10-29
GR3021571T3 (en) 1997-02-28
JPH05184739A (ja) 1993-07-27

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