EP0521295B1 - Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Nassrasierapparates - Google Patents
Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Nassrasierapparates Download PDFInfo
- Publication number
- EP0521295B1 EP0521295B1 EP92108767A EP92108767A EP0521295B1 EP 0521295 B1 EP0521295 B1 EP 0521295B1 EP 92108767 A EP92108767 A EP 92108767A EP 92108767 A EP92108767 A EP 92108767A EP 0521295 B1 EP0521295 B1 EP 0521295B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- razor
- plastic housing
- blade
- blade block
- linked
- 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
Links
- 230000033001 locomotion Effects 0.000 claims description 17
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 230000026058 directional locomotion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
Images
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.
- 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 mutually corresponding locking devices, this is referred to as a so-called razor blade unit.
- a plastic housing with a front guide strip 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 position 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 in a razor head according to the preamble of claim 1, the single or double razor blade is attached to a blade block and that the blade block on a four-bar mechanism with two each between the plastic housing and the blade block at joints with the (The) cutting edge (s) of the razor blade (s) parallel axes is pivoted against the spring force pivotable levers.
- 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 attached in parallel to one another can be moved in parallel and thus synchronously.
- a controlled directional movement of the razor blade block is achieved by means of the four-bar mechanism, this blade block executing a combination of rotational and translational movement.
- the appropriate movement of the blade block and thus the razor blades depends on a corresponding positioning of the joints.
- the resilient arrangement of the blade block within the plastic housing is such that the blade block is moved together with the razor blades essentially in the direction of the back during shaving. As soon as no more pressure is exerted on the razor block, the spring moves the blade block back into the basic position.
- Another advantage of the razor head according to the invention is that only slight frictional forces occur in the pivot points of the joints and that the razor head is insensitive to dirt.
- the one pivot lever in the front area of the blade block and the other pivot lever in the rear area of the blade block is hinged to the latter.
- the rear linkage of the pivot lever is also to be understood as the possibility that the rear side of the blade block has an indentation within which the pivot lever is, as it were, articulated within the blade block.
- the pivot lever pivoted in the front region of the blade block is pivoted with its other end in the front or middle, lower region of the plastic housing and the pivot lever arranged in the rear region of the blade block with its other end also in the lower region of the Plastic housing, but articulated behind it is.
- the four joints preferably essentially form the corner points of a parallelogram.
- the swivel lever articulated in the front area of the blade block is articulated with its other end in the front or middle, lower area of the plastic housing and the articulated arm articulated in the rear area of the blade block with its other end in the rear, upper area of the Plastic housing is articulated.
- the plastic housing has the usual rear cover cap, it is proposed in a further development that the pivoted lever articulated in the rear, upper region of the plastic housing is articulated essentially below the cover cap.
- the swivel levers each have a bent-over tab at the end, through which parallel, round bearing rods are guided to the cutting edge (s) of the razor blade (s), which are fixed to the housing or fixed to the blade block. This represents a technically simple way to realize the joints.
- the width of the pivot levers extends essentially over the entire length of the plastic housing, so that the blade block is supported over its entire width.
- a spring is arranged on at least one pivot lever, which is supported on another part of the shaver head.
- This other part of the shaver head can be the plastic housing, the blade block or the other pivot lever. It is only required that the spring be supported in such a way that it brings about a restoring force of the blade block in the event of a deflection.
- the spring is preferably integrally formed on the pivot lever. This represents a technically simple possibility of realizing the spring, in particular no additional part being required.
- a compression spring can be arranged between the blade block or one of the pivot levers and the rear wall of the plastic housing. This compression spring, supported between these two parts, represents a technically simple possibility for pivoting the blade block back into the starting position.
- This compression spring is preferably a curved leaf or wire spring.
- the plastic housing and / or the blade block and / or the pivot levers define stops limiting the pivoting movement with respect to one another. This specifies the start and end positions of the blade block as it moves within the plastic housing.
- FIGS. 6 and 7 show a first embodiment and in FIGS. 6 and 7 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 and connected accordingly, for example welded, glued, latched, plugged together, etc.
- a blade block 4 is resiliently mounted between the lower part 2 and the upper part 3 within the plastic housing 1, this blade block 4 being able to carry out a combination of rotational and translational movement by means of a corresponding bearing.
- On the blade block 4 two razor blades 5 are attached to form a double razor blade, for example glued or welded on.
- This four-link mechanism 6 consists of two pivot levers 7, 7 'which (as can be seen in FIG. 2) extend over the entire width of the plastic housing 1, ie from the left side to the right side.
- These pivot levers 7, 7 ' are formed, for example, by a correspondingly bent sheet metal stamped part or by a plastic molded part and each have flanged ends at their ends 8 with a round inner recess.
- These tabs 8 are pivotally mounted on bearing rods 9 and thereby form joints A to D.
- the bearing rods 9 run parallel to the cutting edges 10 of the razor blades 5 and are either fixed to the housing (joints A and B) or fixed to the blade block (joints C and D).
- the joints C and D of the blade block 4 are arranged on the front side and on the rear side thereof, while the joints A and B of the plastic housing 1 are inclined at the front downward in the plastic housing 1 are positioned so that the four joints A to D essentially form the corner points of a parallelogram.
- a spring 11 is integrally formed on a pivot lever 7 and is supported on the front of the other pivot lever 7 'and thus tries to turn the pivot lever 7 counterclockwise into the basic position.
- FIG. 4 This basic position of the blade block 4 is shown in FIG. During shaving, pressure is exerted on the blade block 4, which has the effect that the blade block 4 is displaced in the direction of the rear wall 12 of the plastic housing 1 in a combined rotary and translatory movement (indicated by the arrow P). As soon as the pressurization ceases, the blade block 4 returns to the basic position shown in FIG. 4 due to the force of the force of the spring 11 from the pivoting position shown in FIG. 5.
- the basic position is defined by stops between the plastic housing 1 and the pivot lever 7, as is the maximum pivoting position by stops between the pivot lever 7 'and the rear wall 12 of the plastic housing 1.
- the joints A to D of the four-bar transmission 6 are arranged somewhat differently. While the joints A and C of the front pivot lever 7 correspond in their positions substantially to those of the first embodiment, the joints B and C of the rear pivot lever 7 'are arranged somewhat differently. Thus, the joint D is arranged somewhat within the blade block 4 on the rear side thereof. Above all, the joint B is not in the lower region of the plastic housing 1, but in the upper region above the joint D below a cover cap 13 of the plastic housing 1. For this purpose, the rear pivot lever 7 'is also angled.
- a compression spring 14 is supported in the form of a leaf spring, which is received in a recess 15 of the plastic housing 1.
- this second embodiment is similar to that of the first embodiment, namely that the blade block 4 with its two razor blades 5 executes a combined rotational and translational movement, provided that a force is exerted on the blade block 4 starting from the basic position shown in FIG. 6. so that the blade block 4 reaches the end position shown in Fig. 7, which is limited by a stop between the rear pivot lever 7 'and the rear wall 12 of the plastic housing 1.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
- Cosmetics (AREA)
- Gear Processing (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9108212U DE9108212U1 (de) | 1991-07-03 | 1991-07-03 | Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Naßrasierapparates |
DE9108212U | 1991-07-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0521295A1 EP0521295A1 (de) | 1993-01-07 |
EP0521295B1 true EP0521295B1 (de) | 1995-04-19 |
Family
ID=6868940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92108767A Expired - Lifetime EP0521295B1 (de) | 1991-07-03 | 1992-05-25 | Rasierapparatekopf, insbesondere Rasierklingeneinheit eines Nassrasierapparates |
Country Status (8)
Country | Link |
---|---|
US (1) | US5222300A (ja) |
EP (1) | EP0521295B1 (ja) |
JP (1) | JP3284474B2 (ja) |
AT (1) | ATE121337T1 (ja) |
BR (1) | BR9202599A (ja) |
DE (2) | DE9108212U1 (ja) |
ES (1) | ES2073812T3 (ja) |
RU (1) | RU2058882C1 (ja) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5347714A (en) * | 1993-02-18 | 1994-09-20 | American Safety Razor Company | Movable blade shaving cartridge |
US5590468A (en) * | 1993-04-16 | 1997-01-07 | American Safety Razor Company | Movable blade shaving cartridge with conditioning bar |
US5341571A (en) * | 1993-04-16 | 1994-08-30 | American Safety Razor Company | Movable blade shaving cartridge or the like |
US5546660A (en) * | 1994-09-30 | 1996-08-20 | Warner-Lambert Company | Dynamic razor head |
WO1997035693A2 (en) | 1996-03-27 | 1997-10-02 | 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 |
US6161287A (en) * | 1998-04-24 | 2000-12-19 | The Gillette Company | Razor blade system |
GB2354474B8 (en) * | 1999-09-27 | 2008-01-29 | Gillette Co | Safety razors |
CN1198707C (zh) * | 1999-11-29 | 2005-04-27 | 皇家菲利浦电子有限公司 | 带有主架和子架的剃须头和带有该剃须头的剃须刀 |
US6880253B1 (en) | 2000-06-23 | 2005-04-19 | Bic Violex S.A. | Razor with a movable shaving head |
DE602004011841T2 (de) * | 2004-05-06 | 2009-02-05 | Bic Violex S.A., Anixi | Rasiererkopf mit einem adapterkappenelement |
WO2005108024A1 (en) * | 2004-05-06 | 2005-11-17 | Bic-Violex Sa | Razor head having laser welded parts and method of producing thereof |
US7748121B2 (en) | 2005-05-06 | 2010-07-06 | Eveready Battery Company, Inc. | Razor blade and support assembly |
US20070056404A1 (en) * | 2005-09-14 | 2007-03-15 | Pricone Robert M | Method and apparatus for and to make hair removal elements |
JP4977374B2 (ja) * | 2006-02-14 | 2012-07-18 | 株式会社貝印刃物開発センター | 剃刀 |
JP4950506B2 (ja) * | 2006-02-14 | 2012-06-13 | 株式会社貝印刃物開発センター | 剃刀 |
JP4950507B2 (ja) | 2006-02-14 | 2012-06-13 | 株式会社貝印刃物開発センター | 剃刀 |
EP2419247B1 (en) * | 2009-04-15 | 2020-05-27 | BIC-Violex S.A. | Method of manufacturing a razor head component, support obtained thereby and razor cartridge and razor comprising said support |
US8745882B2 (en) | 2010-09-29 | 2014-06-10 | The Gillette Company | Flexible and separable portion of a razor handle |
US8745883B2 (en) | 2010-09-29 | 2014-06-10 | The Gillette Company | Razor handle with a rotatable portion |
US8938885B2 (en) | 2012-05-01 | 2015-01-27 | The Gillette Company | Razor handle with a rotatable portion |
CA3001659A1 (en) * | 2015-12-17 | 2017-06-22 | Bic Violex S.A. | Shaving head |
US11648696B1 (en) | 2020-03-12 | 2023-05-16 | Michael Friedman | Variable number of blades hair shaving instrument |
TW202237360A (zh) | 2021-01-16 | 2022-10-01 | 羅伯特 J 二世 格蘭 | 用於切割及折疊安全刮鬍刀以形成刮鬍刀頭之雙刀片系統的壓掣器及方法及其總成 |
US12005595B2 (en) * | 2021-01-29 | 2024-06-11 | The Gillette Company Llc | Razor cartridge with a rotatably attached housing portion |
USD1005592S1 (en) * | 2023-08-11 | 2023-11-21 | Shenzhen Early Century Technology Co., Ltd. | Shaver replacement head |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3950848A (en) * | 1974-03-18 | 1976-04-20 | Michael Goldstein | Safety razor |
GB1531003A (en) * | 1975-05-29 | 1978-11-01 | Gillette Co | Shaving units |
US4347663A (en) * | 1980-01-16 | 1982-09-07 | Ullmo Andre A | Safety razor having movable head |
US4442598A (en) * | 1981-01-30 | 1984-04-17 | The Gillette Company | Razor blade assembly |
US4621424A (en) * | 1982-09-17 | 1986-11-11 | The Gillette Company | Razor blade assembly |
US4774765A (en) * | 1986-09-02 | 1988-10-04 | Warner-Lambert Company | Blade assembly featuring variable span |
US4939840A (en) * | 1989-04-14 | 1990-07-10 | Kemal Butka | Safety razor |
DE8910490U1 (de) * | 1989-09-02 | 1991-01-10 | Wilkinson Sword GmbH, 5650 Solingen | Rasierapparatekopf eines Naßrasierapparates |
-
1991
- 1991-07-03 DE DE9108212U patent/DE9108212U1/de not_active Expired - Lifetime
-
1992
- 1992-05-25 EP EP92108767A patent/EP0521295B1/de not_active Expired - Lifetime
- 1992-05-25 AT AT92108767T patent/ATE121337T1/de not_active IP Right Cessation
- 1992-05-25 ES ES92108767T patent/ES2073812T3/es not_active Expired - Lifetime
- 1992-05-25 DE DE59201958T patent/DE59201958D1/de not_active Expired - Lifetime
- 1992-06-25 US US07/906,210 patent/US5222300A/en not_active Expired - Lifetime
- 1992-06-25 JP JP20692992A patent/JP3284474B2/ja not_active Expired - Lifetime
- 1992-07-02 RU SU925052096A patent/RU2058882C1/ru active
- 1992-07-03 BR BR929202599A patent/BR9202599A/pt not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
RU2058882C1 (ru) | 1996-04-27 |
BR9202599A (pt) | 1993-03-16 |
JP3284474B2 (ja) | 2002-05-20 |
US5222300A (en) | 1993-06-29 |
JPH05184741A (ja) | 1993-07-27 |
ES2073812T3 (es) | 1995-08-16 |
EP0521295A1 (de) | 1993-01-07 |
DE9108212U1 (de) | 1992-10-29 |
DE59201958D1 (de) | 1995-05-24 |
ATE121337T1 (de) | 1995-05-15 |
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