EP0416358A2 - Tête de rasage pour rasoir mécanique - Google Patents

Tête de rasage pour rasoir mécanique Download PDF

Info

Publication number
EP0416358A2
EP0416358A2 EP90115945A EP90115945A EP0416358A2 EP 0416358 A2 EP0416358 A2 EP 0416358A2 EP 90115945 A EP90115945 A EP 90115945A EP 90115945 A EP90115945 A EP 90115945A EP 0416358 A2 EP0416358 A2 EP 0416358A2
Authority
EP
European Patent Office
Prior art keywords
guide bar
razor
head according
razor head
razor blade
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
EP90115945A
Other languages
German (de)
English (en)
Other versions
EP0416358A3 (en
EP0416358B1 (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 EP0416358A2 publication Critical patent/EP0416358A2/fr
Publication of EP0416358A3 publication Critical patent/EP0416358A3/de
Application granted granted Critical
Publication of EP0416358B1 publication Critical patent/EP0416358B1/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
    • B26B21/4012—Housing details, e.g. for cartridges
    • B26B21/4018—Guard elements

Definitions

  • the invention relates to a razor head of a wet shaver arranged at the front end of a handle, a razor blade in the form of a single or double razor blade being arranged in a body of the razor head and the razor head in front of the cutting edge (s) of the razor blade (s) has parallel guide bar and a rear cover cap.
  • Such a shaver head for a wet shaver is known. It is basically arranged at the front end of a handle. A single or double razor blade is arranged in one body of the razor head. This is covered by a cover cap, while a parallel guide bar is arranged in front of the cutting edges of the razor blades.
  • the shaving angle in such a razor head is defined by the front guide bar, the rear cover cap and by the cutting edges of the razor blades, provided the latter is a double razor blade.
  • a shaver head has a very specific shaving angle on which the shaving properties depend.
  • the shaving properties are always the same for a specific razor head.
  • this is disadvantageous since it would often be desirable if the user could change the shaving geometry according to his needs.
  • the object of the invention is to further develop a shaving head of a wet shaving apparatus of the type specified at the outset in such a way that the shaving angle and thus the cutting geometry can be changed in a technically simple manner by the shaving head.
  • the invention proposes that the guide strip is arranged freely movable against a spring force perpendicular to its longitudinal extension on a displacement device or on a pivoting device.
  • the shaving angle and thus the cutting geometry can be changed in a technically simple manner.
  • the guide bar is parallel to the pressure Razor blade transverse axis with the result that due to the increasing pressure on the guide bar, the protrusion of the razor blade and thus the thoroughness of the shave increases. Since at the same time the distance between the tip of the blade and the contact edge on the guide bar remains constant or decreases, a uniform shaving behavior is achieved during shaving.
  • a further development of the invention proposes that the guide strip with the spring device is designed to function independently of the arrangement of the razor blade (s) in the body.
  • the spring of the guide bar is achieved without complicated mechanics by the blade package, so that the blade package can be riveted to the single or double razor blade arranged in the body, for example, and the function of the guide bar is independent of the connection of the blade package.
  • the guide bar is arranged on the displacement device in a substantially linearly movable manner.
  • the plane of movement of the guide bar runs essentially parallel to the plane (s) of the razor blade (s).
  • a displacement of the guide bar can be achieved in a technically simple manner
  • the displaceability of the guide bar essentially parallel to the plane of the razor blade has the advantage that minimal force is required for this, since the direction for the force required to move the Guide bar essentially matches the shaving direction.
  • the more the user presses the shaver head onto the skin to be shaved with his guide bar the greater the user can adjust the shaving angle.
  • the plane of movement of the guide bar is substantially perpendicular to the plane (s) of the razor blade (s). If the guide bar is pressed here during shaving, the guide bar moves downward against the spring force in such a way that the shaving angle increases.
  • the plane of movement of the guide strip can run essentially perpendicular to the connecting plane of the cutting edges of the razor blades.
  • the shaving angle can be increased during the shave against the spring force by a corresponding movement of the guide bar by the guide bar deviating obliquely downwards and backwards.
  • a further development of the invention proposes that the spring force exerted on the guide strip is carried out by at least one separate spring.
  • the spring can be, for example, a helical spring.
  • the springs are arranged as separate components between the body and the guide bar. The built-in springs allow precise determination of the displacement forces.
  • the guide bar has at least two pins, by means of which the guide bar is mounted in the body in a linearly movable manner, the springs being arranged within the body and being supported between the body and the free rear ends of the pins.
  • the pins are arranged in the rear area of the guide bar.
  • the guide bar is rotatably arranged on the pivoting device, the axis of rotation of which lies in the body.
  • An adjustment of the shaving angle during shaving is also possible in this way if the upper side of the guide strip is pressurized accordingly, so that it is pivoted downward against the spring force while increasing the shaving angle.
  • the guide bar can have arms which extend to the rear and are rotatably mounted in the body and the lever arrangement thus formed is brought into an initial position by the springs.
  • these are each designed as multiple springs, in particular double springs with different spring characteristics.
  • This has the advantage that the guide bar is initially moved into the working position in the beginning of the shaving process and application of a small force, in which a gentle shave is possible, since a corresponding shaving angle is established. If the force to obtain a close shave is then increased, the force of a second (stronger) spring must be overcome, which then leads to a different shaving angle. This path of movement must be kept within narrow limits.
  • the effect described above can also be achieved in that the actual spring has a very specific characteristic curve and that the guide strip additionally consists of an elastic material, the spring characteristic curve of which differs from the characteristic curve of the springs. This elastic material of the guide bar then allows the second movement for the shaving geometry with the closer shave.
  • stops are provided between the body and the guide bar.
  • movement guides are preferably provided between the body and the guide bar.
  • stops and / or the movement guides are arranged on the side of the razor head.
  • the razor head it is provided with a friction-reducing sliding strip, in particular based on water-soluble or non-water-soluble polymers.
  • the razor head according to the invention with a movable guide bar can be used on any type of wet razor, for example the razor blades can be exchangeable.
  • the razor head is formed by a razor blade unit in which the razor blade (s) is (are) permanently embedded in a plastic body and the guide bar is movably arranged with respect to this plastic body.
  • a razor blade unit 1 consists of a body 2 made of plastic, in which two razor blades 3 in the form of a double razor blade are embedded in a non-detachable manner.
  • the cutting edges 4 of the two razor blades 3 run parallel to one another and are staggered one behind the other.
  • the razor blades 3 are covered on the top by a cover cap 5.
  • the razor blade unit 1 is intended to be arranged at the front end of a handle (not shown) of a wet shaving apparatus, the fastening device to be provided for this purpose on the razor blade unit 1 not being shown.
  • This has side wings 7 which extend to the rear.
  • this guide bar 6 is equipped with a displacement device 8, by means of which the guide bar 6 can move towards body 2.
  • the guide bar 6 has three pins 9 on the rear, which protrude into corresponding recesses 10 in the body 2.
  • the pins 9 are each provided with a plate-like head 11, which prevent the pins 9 and thus the guide bar 6 from being pulled out of the recess 10 in the body 2.
  • a double spring consisting of two springs 12 ', 12' is supported on each pin 9.
  • the two springs 12 ', 12 ⁇ have different spring characteristics, the spring 12' has a lower spring constant than the spring 12 ⁇ , so that the spring 12 'can be pressed in with a lower force by a certain distance than the spring 12 ⁇ .
  • the razor blade unit 1 of FIGS. 1 to 3 works as follows:
  • the shaving geometry with the shaving angle is defined by the guide bar 6, by the cutting edges 4 of the razor blades 3 and by the cover cap 5. In the basic position shown in particular in FIG. 3, this shaving angle is relatively small.
  • the user presses the razor blade unit 1 against the skin with its guide bar 6. Due to the contact pressure, the guide bar 6 is moved against the force of the weaker springs 12 'in the direction of the body 2 (indicated by the arrow P), so that the guide bar, which protrudes too far in the unused state, with the start of the shaving process and application of a small force is first moved to the working position in which the weaker spring 12 'can no longer be compressed. This is the one position enables a gentle shave, as a corresponding shaving angle is established. If the force is now increased, the stronger springs 12 ⁇ are pressed together, which leads to a different shaving angle to achieve a more thorough shave.
  • two shaving angles can thus be set due to the double spring, one shaving angle being provided for a gentle shave and the other shaving angle being intended for a more thorough shave.
  • the setting of the respective shaving angle depends on the application of force by the user. In principle, however, it is also conceivable to continuously adjust the shaving angle by means of a metered application of pressure. The greater the pressure, the greater the shaving angle.
  • stops 13 which are defined by the free ends of the rearward-facing wings of the guide bar 7 and the corresponding surfaces on the body 2.
  • the upper side of the wings 7, together with a corresponding surface on the body 2 forms a movement guide 14, which in the exemplary embodiment shown is a sliding guide.
  • the guide bar 6 is movable parallel to the levels of the razor blades 3. This is indicated again in the purely schematic FIG. 4 by the directional arrow R1. However, there are other possibilities of movement for the guide bar 6, which are also indicated purely schematically in FIG. 4.
  • the guide bar 6 can also be moved linearly at right angles to the levels of the razor blades 3, which is indicated by the directional arrow R2.
  • Another alternative provides for the guide strip 6 to be moved linearly at right angles to the connecting plane E of the two cutting edges 4 of the razor blades 3, which is indicated by the directional arrow R3.
  • the movements in the directions R1, R2 and R3 are linear movements.
  • the axis of rotation D for the pure pivoting movement or also for the linear movement in a first approximation can either run in the body 2, as is indicated in FIG. 4, or the pivot point can also lie in the tip of the blade.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Scissors And Nippers (AREA)
EP90115945A 1989-09-02 1990-08-21 Tête de rasage pour rasoir mécanique Expired - Lifetime EP0416358B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8910491U DE8910491U1 (de) 1989-09-02 1989-09-02 Rasierapparatekopf eines Naßrasierapparates
DE8910491U 1989-09-02

Publications (3)

Publication Number Publication Date
EP0416358A2 true EP0416358A2 (fr) 1991-03-13
EP0416358A3 EP0416358A3 (en) 1991-09-11
EP0416358B1 EP0416358B1 (fr) 1994-05-18

Family

ID=6842506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115945A Expired - Lifetime EP0416358B1 (fr) 1989-09-02 1990-08-21 Tête de rasage pour rasoir mécanique

Country Status (7)

Country Link
US (1) US5084969A (fr)
EP (1) EP0416358B1 (fr)
AT (1) ATE105761T1 (fr)
DE (2) DE8910491U1 (fr)
DK (1) DK0416358T3 (fr)
ES (1) ES2055247T3 (fr)
HK (1) HK62695A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167625B1 (en) 1999-05-18 2001-01-02 Warner-Lambert Company Shaving implement

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2144437A1 (fr) * 1992-11-09 1994-05-26 Frank A. Ferraro Tete de rasoir moulee, dynamique, a insertion
USD379675S (en) * 1994-07-07 1997-06-03 Feather Safety Razor Co., Ltd. Safety razor cartridge
GB2354474B8 (en) 1999-09-27 2008-01-29 Gillette Co Safety razors
US6880253B1 (en) 2000-06-23 2005-04-19 Bic Violex S.A. Razor with a movable shaving head
US6839968B2 (en) * 2002-05-09 2005-01-11 The Gillette Company Shaving systems
US6852262B2 (en) * 2002-05-09 2005-02-08 The Gillette Company Insert molding razor cartridges
US20040103538A1 (en) * 2002-08-21 2004-06-03 Eveready Battery Company, Inc. Razor cartridge
US20040181943A1 (en) * 2003-03-18 2004-09-23 Michael Kwiecien Shaving systems
US7367125B2 (en) * 2003-12-10 2008-05-06 The Gillette Company Shaving systems
WO2005072919A1 (fr) * 2004-01-26 2005-08-11 Koninklijke Philips Electronics N.V. Rasoir de surete comprenant un organe de guidage reglable
US20050235495A1 (en) * 2004-04-22 2005-10-27 Aviza Gregory D Shaving systems with exfoliation
US7898995B2 (en) * 2007-02-21 2011-03-01 Qualcomm, Incorporated Dynamic adjustment of inactivity timer threshold for call control transactions
RU2539134C2 (ru) * 2009-10-05 2015-01-10 Конинклейке Филипс Электроникс Н.В. Устройство для бритья, имеющее безопасный блок лезвий бритвы
US8745883B2 (en) 2010-09-29 2014-06-10 The Gillette Company Razor handle with a rotatable portion
US8745882B2 (en) 2010-09-29 2014-06-10 The Gillette Company Flexible and separable portion of a razor handle
US8938885B2 (en) 2012-05-01 2015-01-27 The Gillette Company Razor handle with a rotatable portion
US20160158948A1 (en) * 2014-12-08 2016-06-09 The Gillette Company Razor Cartridge Guard Structure
US20160158949A1 (en) * 2014-12-08 2016-06-09 The Gillette Company Razor Cartridge Guard Structure
KR102015770B1 (ko) * 2018-04-12 2019-08-29 주식회사 도루코 블레이드 간격 조절형 면도기 카트리지

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2323502A1 (fr) * 1975-09-12 1977-04-08 Wilkinson Sword Ltd Perfectionnements relatifs aux rasoirs de surete
US4063354A (en) * 1975-05-29 1977-12-20 The Gillette Company Shaving unit
GB2009017A (en) * 1977-12-02 1979-06-13 Warner Lambert Co Razor cartridges
EP0290025A1 (fr) * 1987-05-08 1988-11-09 The Gillette Company Rasoirs de sûreté

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2038230A (en) * 1933-06-02 1936-04-21 American Safety Razor Corp Safety razor
US2333743A (en) * 1942-06-15 1943-11-09 Sampson Robert William Safety razor
US2492328A (en) * 1945-06-09 1949-12-27 Simon Justin Razor
US2710446A (en) * 1952-06-02 1955-06-14 Kamekichi Shibayama Guard for safety razors
US3500539A (en) * 1967-05-16 1970-03-17 Gillette Co Safety razor with flexible guard
US3909941A (en) * 1974-05-03 1975-10-07 Warner Lambert Co Adjustable safety razor
US4184246A (en) * 1978-07-24 1980-01-22 The Gillette Company Shaving unit
CA1140321A (fr) * 1979-05-25 1983-02-01 John F. Francis Tetes de rasoirs de surete
US4266340A (en) * 1979-06-11 1981-05-12 Warner-Lambert Company Razor handle for mounting pivotable razor blade cartridges
US4253236A (en) * 1979-06-19 1981-03-03 The Gillette Company Razor blade assembly
US4378633A (en) * 1979-12-07 1983-04-05 The Gillette Company Razor blade assembly
US4347663A (en) * 1980-01-16 1982-09-07 Ullmo Andre A Safety razor having movable head
US4501067A (en) * 1982-04-03 1985-02-26 Wilkinson Sword Limited Razors and shaving units for razors
US4624051A (en) * 1984-12-07 1986-11-25 The Gillette Company Shaving unit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063354A (en) * 1975-05-29 1977-12-20 The Gillette Company Shaving unit
FR2323502A1 (fr) * 1975-09-12 1977-04-08 Wilkinson Sword Ltd Perfectionnements relatifs aux rasoirs de surete
GB2009017A (en) * 1977-12-02 1979-06-13 Warner Lambert Co Razor cartridges
EP0290025A1 (fr) * 1987-05-08 1988-11-09 The Gillette Company Rasoirs de sûreté

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167625B1 (en) 1999-05-18 2001-01-02 Warner-Lambert Company Shaving implement

Also Published As

Publication number Publication date
ES2055247T3 (es) 1994-08-16
HK62695A (en) 1995-05-05
ATE105761T1 (de) 1994-06-15
DE8910491U1 (de) 1991-01-10
DE59005724D1 (de) 1994-06-23
EP0416358A3 (en) 1991-09-11
US5084969A (en) 1992-02-04
EP0416358B1 (fr) 1994-05-18
DK0416358T3 (da) 1994-09-19

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