EP0769994B1 - Untermesser für einen trockenrasierapparat - Google Patents
Untermesser für einen trockenrasierapparat Download PDFInfo
- Publication number
- EP0769994B1 EP0769994B1 EP95920854A EP95920854A EP0769994B1 EP 0769994 B1 EP0769994 B1 EP 0769994B1 EP 95920854 A EP95920854 A EP 95920854A EP 95920854 A EP95920854 A EP 95920854A EP 0769994 B1 EP0769994 B1 EP 0769994B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- area
- wall thickness
- inner cutter
- cross
- cutter according
- 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
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
- B26B19/044—Manufacture and assembly of cutter blocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
- B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
- B26B19/04—Cutting heads therefor; Cutters therefor; Securing equipment thereof
- B26B19/10—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly
- B26B19/102—Cutting heads therefor; Cutters therefor; Securing equipment thereof involving two or more different types of reciprocating cutting elements, e.g. a pair of toothed shearing elements combined with a pair of perforated cutting elements or a combined toothed and perforated cutting assembly with a secondary cutting unit being translated or slid into an operating position
Definitions
- the invention relates to a lower knife for one with an upper knife equipped shaving head of a dry shaver, with several, in parallel Knife blades provided to each other, which by means of an elongated profile bar, incisions provided essentially transversely to its longitudinal extent are formed, the ends of the incisions being arcuate and one from the apex of each arcuate end of each cut outgoing, leading towards an apex line of the profile bar Reduction in the wall thickness of each knife blade is provided.
- a lower knife of the type mentioned is known - see operating instructions for the "Braun Flex Control 4515 universal” dry shavers, Braun Flex Control 4520 universal “and” Braun Flex Control 4525 universal ", Printed notice 5-585-075 / XI-91, page 3.
- These known dry shavers are on a coupling piece two from an elongated, tubular Profiled manufactured lower knife arranged.
- the knife blades of the respective lower knives are by means of an apex line of the tubular Profiled bars formed from incisions.
- the by parallel to each other Running incisions made knife blades parallel to each other running side walls, whereby the wall thickness of a knife blade up uniformly thick to the arcuate ends of each incision is.
- each incision is semicircular a radius that is half the distance between two neighboring blades corresponds to each other.
- wall thickness of a knife blade 0.2 mm and above. Wall thicknesses of Knife blades of the size mentioned adversely affect the cutting behavior from lower knives.
- a lower knife of the type mentioned is also known from EP-A-80303.
- the object of the invention is to determine the cutting behavior of a lower knife to improve the type mentioned at the beginning.
- this object is at the beginning of a lower knife mentioned type in that the reduction in wall thickness D from Vertex SP extends to the apex line SL.
- Another solution to the problem of the invention is that the Reduction of the wall thickness D from the apex SP over an area B extends, the geometric cross-sectional shape is substantially parabolic is trained.
- Another solution to the problem of the invention is that the Reduction of the wall thickness D from the apex SP over an area B extends, the geometric cross-sectional shape substantially elliptical is trained.
- the solutions according to the invention have a number of advantages.
- the compared to the known lower knife mentioned above about the half distance A of two neighboring blades going in the direction Vertex line SL of the profile bar provided reduction in the wall thickness D of the Knife blades according to the invention has the consequence that bottom knives with wall thicknesses D of the knife blades less than 0.2 mm, less than 0.15 mm and even smaller than 0.1 mm, can be manufactured without risk of breakage. Still has this reduction achieved according to the invention over a larger range Wall thickness D of the knife blades with a smaller covering of the knife blades the cutting holes of the upper knife of a shaving head, whereby the Threading the hair into the cutting holes of the upper knife considerably is favored.
- the Incision in at least two areas B and C with different geometrical Cross-sectional shapes is divided.
- the geometric The cross-sectional shape of area C is essentially rectangular is.
- the cross-sectional shape of the area C can also be substantially trapezoidal.
- One embodiment distinguishes itself from the shaving when there are no breaks in the knife blades according to the invention by arch-like transitions of different geometric cross-sectional shapes of adjacent areas B and C out.
- Very little coverage of the knife blades in the area of the top line SL with the cutting holes of an upper knife is achieved in that the wall thickness D of a knife blade formed by two incisions in the area of Vertex line is formed smaller than 0.15 mm.
- the depth is preferably the incisions from the apex line at least half the diameter of the Profile bar.
- the profile bar is made of formed a hollow body.
- FIG. 1 shows a perspective view of a dry shaver 4, its housing with 9, the on and off switch with 10, the long hair cutting system with 11, the top of the housing with 12, the top of the housing 12 provided opening with 13, the provided on the coupling element 14 Drive pin with 15, which extend in the extension of the narrow sides 16 Support arms with 17 and that between the two support arms 17 by one Axis X-X pivoted shaving head system labeled SK.
- the Support arms 17 are part of a housing head part made of plastic or molded directly onto the housing 9 (not shown).
- the shaving head system SK also arranged immovably on the housing 9 of a dry shaver 4 be.
- the SK shaving head system shows a pair of parallel ones Shaving heads 3 by two lower knives 1, and by these lower knives 1 surrounding upper knife 2 are formed.
- the upper knife 2 can for example clamped by one or two arched in an interchangeable frame 18 Foil 19 to be composed.
- protective cap 20 that can be placed on the interchangeable frame 18 are resiliently mounted on a common coupling element 14.
- the coupling element 14 is with a drive pin 15 through the opening 13 in the housing 9 provided electric drive coupled.
- the lower knife 1 shows an embodiment of a lower knife 1.
- the lower knife 1 consists of an elongated, that is, transverse to the longitudinal extension of the dry shaver 4 extending profile bar 6.
- the profile bar 6 can be made from one solid rod - see Fig. 10- or from a rod-shaped hollow body, for. B. a tube - see Fig. 2a - or from a U-shaped rod-shaped Body - see Fig. 8 or Fig. 9 - exist.
- the cross-sectional shape of the profile bar 6 can be circular, square, T-shaped, double T-shaped or U-shaped be.
- the profile rod 6 consists of a tubular body with an outer tube diameter 6.5 mm and a tube inside diameter of approx. 4.4 mm, i.e. with a tube thickness of approx. 1 mm.
- this tubular Profile bar 6 are transverse to its longitudinal extent, from a crest line SL a plurality of incisions 7, for example by means of a grinding process, introduced, whereby the knife blades 5 are formed.
- the ends 8 of the Incisions 7 are arcuate, with the outermost point on the Arc line is called the apex SP - see Fig. 3-.
- a coupling element 14 is attached for the purpose of transmitting the drive movement on the lower knife 1. Details of the knife blade formation or the wall thickness D which can be derived from the geometric shape of the incisions 7 Knife blades 5 of the lower knife shown in FIGS. 2 and 2a are shown in FIG. 3 and are described in more detail below.
- each knife blade 5 is characterized by a respective apex SP of an arcuate end 8 of an incision 7 outgoing, increasing towards the apex line SL of the profile bar 6 Reduction of the wall thickness D of a knife blade 5, whereby this Reduction of the wall thickness D from the apex SP to the apex line SL extends. From the reduction in the wall thickness D from the apex SP in A corresponding increasing magnification results in the direction of the apex line SL the gap width of an incision 7 from its end 8 to the apex line SL.
- the geometric cross-sectional shape of the incision 7 is in the embodiment 3 over the leading from the apex SP to the apex line SL Area B divided into two segments S1 and S2, each different Have cross-sectional shapes. That the end 8 of the incision 7th forming segment S1 has a semi-circular cross-sectional shape known per se and the adjoining segment S2 has an adjoining, trapezoidal cross-sectional shape ending in the area of the apex line SL on.
- the inclination of the adjoining the semicircular arc of segment S1 trapezoidal sides that run obliquely outwards are approximately 1 °.
- incisions 7 By means of a such a combination of different geometric cross-sectional shapes of incisions 7 provided parallel to each other in a tubular Profile bar 6, starting from the vertex SP, is an edge-free or shoulder-free or kink-free reduction in the wall thickness D of the knife blades 5 achieved a particularly thin wall thickness D.
- a geometric Cross-sectional shape of the incision 7 it is possible to use knife blades 5 a wall thickness D ⁇ 0.2 mm and even knife blade thicknesses ⁇ 0.1 mm, without these knife blades 5 in the course of manufacture, and also later when using one equipped with such a lower knife 1 Cancel dry shaver 4.
- Fig. 4 shows a further embodiment of a lower knife 1 with one of of the embodiment according to FIG. 3 deviating geometric cross-sectional shape the incisions 7 and thus the dependent, over a larger Area reducing the wall thickness D of the knife blades 5.
- the area B starting from the apex SP of an incision 7 is parabolic.
- the next one, up to the crest line SL leading area C is rectangular.
- This rectangular shape of the Area C has the consequence that all side walls 21 and 22 of the knife blades 5, run parallel to one another over the area C.
- Starting from The parabolic region B extends over apex SP a length that is greater than the dimension of the distance A.
- the lower knife is applied 1 on an upper knife 2 is the cutting angle ⁇ 90 ° while it 3 due to the trapezoidal geometry of segment S2 slightly larger than 90 ° -z. B. 91 ° - is formed.
- FIG. 5 shows a further embodiment of a lower knife 1, in which, for example deviating from the embodiment according to FIG. 4, the geometric Cross-sectional shape of area B for the purpose of reducing the wall thickness D beyond half a distance A, the two adjacent knife blades 5 in Take up the area of the apex line SL to each other, is elliptical.
- Fig. 8 shows a further embodiment of a, from an elongated profile bar 6 manufactured lower knife 1.
- the profile bar 6 is essentially of a U-shape forming walls W1, W2 and W3.
- the profile bar 6 has one curved cutting surface SF1, with a common apex line SL for all incisions made from this apex line SL into the profile bar 6 7.
- the curved wall W1 can, for example, have the shape of a Have semicircular arc or a parabola, the adjoining walls W2 and W3 are provided, for example, running parallel or obliquely to one another could be.
- Fig. 9 shows a lower knife 1 made from a profile bar 6, one of which W-shaped walls W1, W2 and W3 are substantially perpendicular to each other are aligned. 8 is different in the embodiment 9, the wall W1 is made flat, thereby creating a flat cutting surface SF2 is formed, the center line as the apex line SL for the incisions 7 is provided.
- Fig. 10 shows a further embodiment of a lower knife 1, which consists of a T-profile bar 6 is formed. From the level Cutting surface SF2 are several which penetrate the wall W1 and into which Wall W2 partially protruding incisions 7 are provided, of which Vertex line SL up to the apex SP of the respective incisions 7 reaching depth T at least half the diameter of the profile bar 6 is measured from the apex line SL to one opposite this outer wall of the profile bar 6. Different from the embodiments according to FIGS. 2 to 7, the embodiment according to FIG. 10 does not consist of a hollow body, but from a solid profile rod 6.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Dry Shavers And Clippers (AREA)
Description
- Fig. 1
- eine Explosionsdarstellung von Bauelementen eines Trockenrasierapparates in Perspektive,
- Fig. 2
- ein Untermesser mit einer Vielzahl von parallel zueinander vorgesehenen Messerblättern,
- Fig. 2a
- ein Untermesser nach Fig. 2, mit einem rohrförmigen Querschnittsprofil,
- Fig. 3
- eine geometrische Querschnittsform von Einschnitten und daraus resultierenden Wanddicken von Messerblättern,
- Fig. 4
- eine weitere Ausführungsform einer geometrischen Querschnittsform eines Einschnittes und der daraus ableitbaren Wanddicke eines Messerblattes,
- Fig. 5
- eine weitere Ausführungsform einer geometrischen Querschnittsform eines Einschnittes und der daraus ableitbaren Wanddicke eines Messerblattes,
- Fig. 6
- eine weitere Ausführungsform einer geometrischen Querschnittsform eines Einschnittes und derdaraus ableitbaren Wanddicke eines Messerblattes,
- Fig. 7
- eine weitere Ausführungsform einer geometrischen Querschnittsform eines Einschnittes und der daraus ableitbaren Wanddicke eines Messerblattes,
- Fig. 8
- eine geometrische Querschnittsform eines Profilstabes,
- Fig. 9
- eine weitere geometrische Querschnittsform eines Profilstabes,
- Fig. 10
- eine weitere geometrische Querschnittsform eines Profilstabes.
Claims (11)
- Untermesser (1) für einen mit einem Obermesser (2) ausgestatteten Scherkopf (3) eines Trockenrasierapparates (4), mit mehreren parallel zueinander vorgesehenen Messerblättern (5), die mittels in einem länglichen Profilstab (6), im wesentlichen quer zu dessen Längserstreckung, vorgesehener Einschnitte (7) gebildet sind, wobei die Enden (8) der Einschnitte (7) bogenförmig ausgebildet sind und eine von dem Scheitelpunkt (SP) jedes bogenförmigen Endes (8) jedes Einschnittes (7) ausgehende, in Richtung zu einer Scheitellinie (SL) des Profilstabes (6) führende Verminderung der Wanddicke (D) jedes Messerblattes (5) vorgesehen ist, dadurch gekennzeichnet, daß sich die Verminderung der Wanddicke (D) vom Scheitelpunkt (SP) bis zur Scheitellinie (SL) erstreckt (Fig. 2, 2a, 3).
- Untermesser nach dem Oberbegriff des Patentanspruchs 1, dadurch gekennzeichnet, daß sich die Verminderung der Wanddicke (D) vom Scheitelpunkt (SP) aus über einen Bereich (B) erstreckt, der größer ist als der halbe Abstand (A), den zwei benachbarte Messerblätter (5, 5) im Bereich der Scheitellinie (SL) zueinander einnehmen, und daß die geometrische Querschnittsform des Bereiches (B) mittels einer Aneinanderreihung mehrerer Radien (R1, R2, R3 ...RN) bestimmt ist.
- Untermesser nach dem Oberbegriff des Patentanspruchs 1, dadurch gekennzeichnet, daß sich die Verminderung der Wanddicke (D) vom Scheitelpunkt (SP) aus über einen Bereich (B) erstreckt, dessen geometrische Querschnittsform im wesentlichen parabelförmig ausgebildet ist.
- Untermesser nach dem Oberbegriff des Patentanspruchs 1, dadurch gekennzeichnet, daß sich die Verminderung der Wanddicke (D) vom Scheitelpunkt (SP) aus über einen Bereich (B) erstreckt, dessen geometrische Querschnittsform im wesentlichen ellipsenförmig ausgebildet ist.
- Untermesser nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß der Einschnitt (7) in wenigstens zwei Bereiche (B und C) mit unterschiedlichen geometrischen Querschnittsformen unterteilt ist.
- Untermesser nach Anspruch 5, dadurch gekennzeichnet, daß die geometrische Querschnittsform des Bereiches (C) im wesentlichen rechteckförmig ausgebildet ist.
- Untermesser nach Anspruch 5, dadurch gekennzeichnet, daß die geometrische Quer-schnittsform des Bereiches (C) im wesentlichen trapezförmig ausgebildet ist.
- Untermesser nach einem der vorhergehenden Ansprüche, gekennzeichnet durch einen bogenartigen Übergang von unterschiedlichen geometrischen Querschnittsformen benachbarter Bereiche (B, C).
- Untermesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Wanddicke (D) eines durch zwei Einschnitte (7) gebildeten Messerblattes (5) im Bereich der Scheitellinie (SL) kleiner als 0,15 mm, vorzugsweise etwa 0,1 mm, ausgebildet ist.
- Untermesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Tiefe (T) der Einschnitte (7), von der Scheitellinie (SL) aus, mindestens den halben Durchmesser des Profilstabes (6) beträgt.
- Untermesser nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Profilstab (6) aus einem Hohlkörper gebildet ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4423503 | 1994-07-05 | ||
DE4423503A DE4423503C1 (de) | 1994-07-05 | 1994-07-05 | Untermesser für einen Trockenrasierapparat |
PCT/EP1995/001936 WO1996001169A1 (de) | 1994-07-05 | 1995-05-22 | Untermesser für einen trockenrasierapparat |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0769994A1 EP0769994A1 (de) | 1997-05-02 |
EP0769994B1 true EP0769994B1 (de) | 1999-02-24 |
Family
ID=6522277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95920854A Expired - Lifetime EP0769994B1 (de) | 1994-07-05 | 1995-05-22 | Untermesser für einen trockenrasierapparat |
Country Status (7)
Country | Link |
---|---|
US (1) | US5884404A (de) |
EP (1) | EP0769994B1 (de) |
JP (1) | JP3701314B2 (de) |
CN (1) | CN1052938C (de) |
AT (1) | ATE176885T1 (de) |
DE (2) | DE4423503C1 (de) |
WO (1) | WO1996001169A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19606719C2 (de) * | 1996-02-23 | 1997-12-11 | Braun Ag | Verfahren zur Bestimmung der Verschmutzung eines Rasierapparates sowie Vorrichtung zur Durchführung des Verfahrens |
JP2005198795A (ja) * | 2004-01-15 | 2005-07-28 | Izumi Products Co | 往復式電気かみそりの内刃製造方法および内刃 |
CN100371127C (zh) * | 2004-12-23 | 2008-02-27 | 上海鼎铃电器有限公司 | 一种往复式剃须刀管子动刀头的加工方法 |
US20060143924A1 (en) * | 2004-12-30 | 2006-07-06 | Rovcal, Inc. | Electric shaver |
DE102005002896A1 (de) * | 2005-01-21 | 2006-07-27 | Braun Gmbh | Elektrisches Haarschneidegerät |
DE102005036383A1 (de) | 2005-07-29 | 2007-02-01 | Braun Gmbh | Scherkopf für einen elektrischen Rasierapparat |
DE102006023774A1 (de) | 2006-05-20 | 2007-11-22 | Braun Gmbh | Untermesser für einen Trockenrasiererscherkopf |
JP4595968B2 (ja) * | 2007-07-12 | 2010-12-08 | パナソニック電工株式会社 | 往復式電気かみそりの内刃 |
DE112007003656B4 (de) * | 2007-09-17 | 2015-03-05 | Xiamen Lairuy Electric Appliances Co., Ltd. | Aussenklingenblock für elektrisches Rasiergerät mit einer Hin- und Herbewegung und dessen Bearbeitungsverfahren |
US20090165303A1 (en) * | 2007-12-27 | 2009-07-02 | Patrick Burgess | Dual-action hair trimmer |
DE102008027224A1 (de) * | 2008-06-06 | 2009-12-10 | Braun Gmbh | Untermesser für den Scherkopf eines Trockenrasierapparates |
DE102009031626A1 (de) | 2009-07-03 | 2011-01-05 | Braun Gmbh | Schereinheit für einen Trockenrasierer mit Hautprotektoren |
US9751225B2 (en) * | 2014-09-23 | 2017-09-05 | Raymond Industrial Ltd. | Electric stubble trimmer |
CN105185033A (zh) * | 2015-09-23 | 2015-12-23 | 云南电网有限责任公司电力科学研究院 | 一种电力设备x射线无损检测移动平台报警装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7335278U (de) * | 1974-05-09 | Steding & Co | Messerkopf für Trockenrasierer und dergl | |
US2037957A (en) * | 1931-12-17 | 1936-04-21 | Andis Mathew | Hair clipper and shaving clipper |
US2098849A (en) * | 1936-04-08 | 1937-11-09 | Amsler Max | Dry safety razor |
US2307471A (en) * | 1938-09-21 | 1943-01-05 | Remington Rand Inc | Shaving implement |
US2281250A (en) * | 1938-12-08 | 1942-04-28 | George E Hale | Method of making spiral cutters |
GB526677A (en) * | 1939-02-22 | 1940-09-24 | John Ernest Wainwright | Improvements in the manufacture of mechanically operated safety razors |
US3060569A (en) * | 1958-10-23 | 1962-10-30 | Oliver Peil Control Ltd | Cutter blade assembly for a motor driven dry shaver |
AT253975B (de) * | 1965-06-15 | 1967-05-10 | Carinthia Elektrogeraete Ges M | Trockenrasierapparat |
GB2109738B (en) * | 1981-11-23 | 1985-07-03 | Gillette Co | Dry shaver |
NL8200101A (nl) * | 1982-01-13 | 1983-08-01 | Philips Nv | Scheerapparaat. |
-
1994
- 1994-07-05 DE DE4423503A patent/DE4423503C1/de not_active Expired - Fee Related
-
1995
- 1995-05-22 WO PCT/EP1995/001936 patent/WO1996001169A1/de active IP Right Grant
- 1995-05-22 DE DE59505149T patent/DE59505149D1/de not_active Expired - Fee Related
- 1995-05-22 JP JP50363896A patent/JP3701314B2/ja not_active Expired - Fee Related
- 1995-05-22 AT AT95920854T patent/ATE176885T1/de not_active IP Right Cessation
- 1995-05-22 CN CN95193968A patent/CN1052938C/zh not_active Expired - Fee Related
- 1995-05-22 EP EP95920854A patent/EP0769994B1/de not_active Expired - Lifetime
- 1995-05-25 US US08/737,539 patent/US5884404A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1151711A (zh) | 1997-06-11 |
US5884404A (en) | 1999-03-23 |
CN1052938C (zh) | 2000-05-31 |
ATE176885T1 (de) | 1999-03-15 |
JPH10502276A (ja) | 1998-03-03 |
DE59505149D1 (de) | 1999-04-01 |
JP3701314B2 (ja) | 2005-09-28 |
DE4423503C1 (de) | 1995-04-20 |
EP0769994A1 (de) | 1997-05-02 |
WO1996001169A1 (de) | 1996-01-18 |
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