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EP3900896B1 - Ensemble de coupe pourvu de bord de coupe ondulaire - Google Patents

Ensemble de coupe pourvu de bord de coupe ondulaire Download PDF

Info

Publication number
EP3900896B1
EP3900896B1 EP20171357.5A EP20171357A EP3900896B1 EP 3900896 B1 EP3900896 B1 EP 3900896B1 EP 20171357 A EP20171357 A EP 20171357A EP 3900896 B1 EP3900896 B1 EP 3900896B1
Authority
EP
European Patent Office
Prior art keywords
blade
wave
tooth elements
comb
cutting edge
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.)
Active
Application number
EP20171357.5A
Other languages
German (de)
English (en)
Other versions
EP3900896A1 (fr
Inventor
Gerd Emminger
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.)
Wahl GmbH
Original Assignee
Wahl 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 Wahl GmbH filed Critical Wahl GmbH
Priority to ES20171357T priority Critical patent/ES2930094T3/es
Priority to EP20171357.5A priority patent/EP3900896B1/fr
Priority to PL20171357.5T priority patent/PL3900896T3/pl
Priority to CN202110330022.4A priority patent/CN113547547B/zh
Priority to US17/237,425 priority patent/US11820030B2/en
Priority to AU2021258500A priority patent/AU2021258500A1/en
Priority to PCT/EP2021/060842 priority patent/WO2021214342A1/fr
Publication of EP3900896A1 publication Critical patent/EP3900896A1/fr
Application granted granted Critical
Publication of EP3900896B1 publication Critical patent/EP3900896B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B26B19/20—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers with provision for shearing hair of preselected or variable length
    • 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/3846—Blades; Cutters
    • 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
    • B26B19/12—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the oscillating- cutter type; Cutting heads therefor; Cutters therefor
    • 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
    • B26B19/20—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers with provision for shearing hair of preselected or variable length
    • B26B19/205—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers with provision for shearing hair of preselected or variable length by adjustment of the cutting members

Definitions

  • the invention relates to a blade set for a hair clipper, in which the cutting edge is designed in a wavy manner.
  • the US7841901B2 a blade assembly for a hair clipper comprising at least one stationary blade having a plurality of stationary blade teeth and at least one movable blade having a plurality of movable blade teeth configured for lateral reciprocation relative to the at least one stationary blade for cutting hair.
  • the movable blade has a set of long teeth configured to cut hair across a width of the movable blade and a set of short teeth configured to cut hair across the width of the movable blade when a feed speed of the hair clipper is one exceeds a certain speed.
  • the U.S. 5,933,964 discloses a hair clipper for cutting strands of hair comprising a blade assembly having a stationary blade with a plurality of stationary blade teeth arranged in a row such that strands of hair enter between adjacent stationary teeth as the blade assembly moves through the strands of hair.
  • the stationary bucket teeth have angled lateral cutting edges and tips, and the lateral cutting edges of adjacent teeth root where they intersect.
  • a moveable blade has multiple moveable blade teeth, also arranged in a row. The moveable blade teeth complement the stationary blade teeth and go over the stationary blade teeth to cut some of the strands of hair.
  • the moving blade teeth are relatively short and preferably have flat tips.
  • the movable blade teeth are separated by blade-like edge surfaces which are aligned in the direction of movement of the movable blade and are capable of cutting some of the strands of hair that enter between the stationary blade teeth.
  • the knife-like blade edges form a first line that lies between a second line formed by the roots of the stationary blade teeth and a third line formed by the tips of the stationary blade teeth.
  • the object of the present invention is to provide a blade assembly that simplifies the cutting of transitions so that even non-professional users can create a beautiful transition.
  • a blade arrangement for a hair clipper comprises a comb with a front cutting edge which is formed from toothed elements, a blade with a front cutting edge which is formed from toothed elements, the cutting edge being formed at the front end sloping towards the lower cutting edge and the upper blade is designed to be movable relative to the lower blade, a connecting device which connects the comb and the blade to one another, and a spring element which biases the comb and the blade towards one another, the cutting edge of the blade being formed in a wave shape, the front cutting edge the blade has at least 3 tooth elements of different lengths and/or the front edges of the individual tooth elements are curved/bent according to the waveform. Due to the different lengths of toothed elements and the curved cutting edges of the toothed elements, the hair is cut in slightly different lengths, which greatly improves the cutting pattern in the transitions during normal use of the hair clipper without any particular practice.
  • a shaft preferably extends from one highest point of the shaft to the next over at least 4 tooth elements, more preferably over 5 or 6 and/or over at most 15 tooth elements, more preferably over 13 or 10.
  • the height from the wave tip to the wave bottom is in particular between 1 mm and 4 mm, preferably at most 3 mm, more preferably at most 2 mm.
  • the crest is the point furthest in front of the wave, and the bottom is the point furthest behind.
  • the wave shape is preferably formed uniformly, as a result of which a more uniform cutting of the individual different hair lengths can be achieved.
  • the outermost lateral tooth elements can be designed as a wave tip. This creates a uniform and, in particular, symmetrical blade arrangement, which simplifies manufacture.
  • the cutting edges of the toothed elements that are further to the front are thinner than those that are further to the rear.
  • the front cutting edge of the upper blade can have at least 4 tooth elements of different lengths, preferably 5 or 6, but at most 10.
  • the tooth elements are arranged lengthwise in ascending and descending order. This will make the cut of the transition smoother and more beautiful.
  • direction “front” refers to a direction of the toothed elements (e.g. in Figure 4b above) and “rear” the opposite direction (in Figure 4b below).
  • figure 1 shows an exploded view of the individual parts of a blade assembly according to the invention 10.
  • figure 2 shows the assembled blade assembly.
  • the top in the figures 1 and 2 is placed on the handle and attached to a drive that generates an oscillating movement.
  • the motor for the drive is located in the handle, as is usual with hair clippers.
  • a blade assembly 10 includes a comb 30, a blade 40, 50, 60, 70, a biasing member 16, hereinafter referred to as spring member 16, and a connector.
  • the connecting means serving to connect the comb 30 and the upper blade 40, 50, 60, 70 includes a variety of components, the functions and number of which may vary.
  • the connecting device comprises a holding element 12, which is attached to the comb 30 with attachment means 13 and which is placed on the handle of the hair clipper and attached to it, for example, via a click fastener.
  • the holding element 12 then also holds the other elements of the connecting device on the comb.
  • the connecting device comprises a slide 14, which is connected to the blade 40, 50, 60, 70 and with which the blade 40, 50, 60, 70 can be pushed back and forth in order to adjust the cutting properties (see arrow A in figure 2 ), an actuating element 18, with which the slide 14 is actuated, a spring element 16, which has hook-shaped ends 17 in a bore 42 is set in the blade and which presses the blade against the comb 30, and a transmission element 20 which transmits the oscillating movement of the drive to the blade 40,50,60,70. In particular, the oscillation takes place in a lateral direction (see arrow B in figure 2 ).
  • the transmission element 20 can be firmly connected to the blade 40, 50, 60, 70 with a click system
  • FIG 2 the blade assembly 10 can be seen in an assembled state, in which all individual parts of the blade assembly are installed.
  • the embodiment of the blade 40 is from figure 4 1, but this is to be understood as exemplary only and the blade assembly described can be used with any blade.
  • FIG 3 the comb 30 is shown.
  • Figure 3a 12 is a view of the top of the comb 30 when the blade assembly 10 is mounted on a clipper handle.
  • the comb 30 has a leading edge 34 formed with toothed elements 36 .
  • the comb has two bores 38 to which the connecting device is fastened with the fastening means 13 .
  • Tooth elements 36 are preferably tapered, with the lower side (see Figure 3b ) on which the blade 40, 50, 60, 70 rests, is formed flat so that the cut is not impaired. That is, the incline 31 is formed on the upper side and can in particular also begin before the toothed elements.
  • Figure 3c 12 is a side view of comb 30. Bores 38 are located in indentations 37. FIG. Furthermore, a recess 35 is also formed in front of the toothed elements 36 . The blades 40, 50, 60, 70 are inserted into these depressions in such a way that they can be moved back and forth by the actuating element and laterally by the drive.
  • FIG. 4 Various embodiments of blade assemblies are shown.
  • the general structure of the blades 40, 50, 60, 70 is the same, which is why the following description applies to all blades 50, 60, 70.
  • FIG. 12 An isometric view of the underside of blades 40, 50, 60, 70 is shown in each case.
  • the figures 4b , 5b , 6b and 7b Fig. 12 are top views of blades 40, 50, 60, 70 abutting comb 30, and Figs figures 4b , 5b , 6b and 7b are views of the underside of the blades 40, 50, 60, 70.
  • a mounting recess 41, 51, 61, 71 for mounting the transmission element 20 is provided in the blade 40, 50, 60, 70.
  • the holes 42, 52, 62, 72 for the spring element 16 are formed on both sides of the fastening recess 41, 51, 61, 71.
  • FIG. 4d A side view of blade 40 is shown. From the side you can see that the blade 40 has two bearing feet 43 which, when mounted, are in the recesses 35, 37 are included. The feet 43 and the indentations 35, 37 are designed in such a way that the movement of the blade 40 forwards/backwards by the actuating element 18 is ensured.
  • the connecting part 43 so to speak the bridge 43, connects the feet of the blade 40 to one another.
  • Figure 4e 4f is a rear view of the blade 40, and 4f is a front view showing the cutting edges of the tooth members 46. FIG. These views are in the in figure 5 , 6 and 7 shown embodiments not shown. However, these blades 50, 60, 70 are designed accordingly.
  • the tooth elements 46, 56, 66, 76 are formed on the leading edge 44, 54, 64, 74 of the blade 40.
  • FIG. The tooth elements 46, 56, 66, 76 are formed in a wave shape. That means the extension forward (above in Figure 4b ) of the individual toothed elements 46 is adapted to a particularly uniform wavy line.
  • the toothed elements 46, 56, 66, 76 have different lengths towards the front, so that there are at least 3 different long toothed elements 46, 56, 66, 76 (short, medium, long) and a shaft (from a longest toothed element 46 , 56, 66, 76 to the next longest tooth element 46, 56, 66, 76).
  • the toothed elements 46, 56, 66, 76 lying on the outside are preferably also the largest toothed elements 46, 56, 66, 76, so that the wavy line always ends at a maximum. Furthermore, a toothed element 46, 56, 66, 76 does not have to be placed at each maximum of the wavy line.
  • the tooth elements 46, 56, 66, 76 have at their front end cutting edges 48, 58, 68, 78 which are formed inclined on the underside (the side facing away from the comb 30). In Figure 4d this can be seen from the side. Also in the plan view of the figures 4c , 5c , 6c and 7c an inclination of the cutting edges 48, 58, 68, 78 is shown.
  • the waveforms are preferably formed uniformly (ie always recurring in the same way) and more preferably also symmetrically to a vertical line through the wave maximum.
  • each shaft goes over 3 or 4 gear elements 46 and thus has a "short shaft". Due to the adaptation to the wavy line, there are at least 3 toothed elements 46 of different lengths, but the specific configuration of the toothed elements 46 can lead to a greater variety.
  • tooth elements 46' and 46'' are of the same length, but the curvature is different Figure 4g a wavy line is shown applied to the cutting edges 48 of the toothed elements 46 . It can be seen how the cutting edges 48 are formed in accordance with the wavy line. Here the “short shaft” is shown, but the cutting edges of those described below “medium wave” and the “long wave” are formed with corresponding wavy lines.
  • FIG 5 a second embodiment of the toothed elements is shown.
  • the structure of the blade 50 is the same as in figure 4 , except that here the wave form has a longer wave, ie one wave here goes between 5, 6 or 7 tooth elements 56 and thus has a "middle wave".
  • the cutting edges 58 are curved in accordance with the wavy line.
  • FIG 6 a third embodiment of the toothed elements is shown.
  • the structure of the blade 60 is basically the same as in the first embodiment, which is shown in figure 4 is shown.
  • the wave form here has an even longer wave, ie one wave here comprises 10, 11 or even more toothed elements 66.
  • This wave form is referred to as a "long wave”.
  • the cutting edges 58 are curved in accordance with the wavy line.
  • FIG 7 another embodiment is shown.
  • the structure of the blade 70 is also the same as in the first embodiment, which is shown in FIG figure 4 is shown.
  • the cutting edges 78 of the toothed elements 76 do not have any curvature, but rather the waveform is placed through the center point of the cutting edges 78 .
  • tooth elements 76 of different lengths with a cutting edge which essentially has no curvature but is straight.
  • a wavy line is then simulated with these toothed elements 76, with two adjacent waves always “sharing” a maximum.
  • a preferred embodiment of the blade 70 is shown, in which a shaft consists of 5 toothed elements, i.e.
  • the wavy line begins with a long toothed element 76', followed by a middle toothed element 76", a short toothed element 76'" and again a middle toothed element 76 ".
  • the final long sprocket 76' is also the start of the adjacent wave.
  • This embodiment can also be applied to longer waveforms by adding further sprockets 76 of different lengths (e.g. a sprocket longer than the middle sprocket 76", but shorter than the long tooth element 76').

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Processing Of Meat And Fish (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Claims (8)

  1. Ensemble de coupe (10) pour une tondeuse à cheveux, comprenant
    un peigne (30) ayant un bord avant (34) qui est réalisé avec des éléments dentés (36) ;
    une lame (40, 50, 60, 70) ayant un bord de coupe avant (44, 54, 64, 74) qui est réalisé avec des éléments dentés (46, 56, 66, 76), le bord de coupe étant réalisé à l'extrémité avant en pente vers le bord de coupe inférieur et la lame étant réalisée mobile par rapport au peigne ;
    un dispositif de liaison reliant de manière mobile le peigne (30) et la lame (40, 50, 60, 70) l'un par rapport à l'autre ; et
    un élément de précontrainte qui précontraint le peigne (30) et la lame (40, 50, 60, 70) l'un par rapport à l'autre ;
    caractérisé en ce que
    le bord de coupe de la lame (40, 50, 60, 70) est réalisé sous une forme ondulaire, le bord de coupe avant de la lame (40, 50, 60, 70) comportant au moins 3 éléments dentés (46, 56, 66, 76) de longueurs différentes et/ou les bords (48, 58, 68) des éléments dentés individuels (46, 56, 66, 76) étant réalisé de manière courbée en fonction de la forme ondulaire.
  2. Ensemble de coupe (10) selon la revendication 1, dans lequel une ondulation s'étend sur au moins 4 éléments dentés (46, 56, 66, 76) .
  3. Ensemble de coupe (10) selon l'une quelconque des revendications précédentes, dans lequel la hauteur de la pointe ondulaire jusqu'au fond ondulaire est comprise entre 1 mm et 4 mm.
  4. Ensemble de coupe (10) selon l'une quelconque des revendications précédentes, dans lequel la ligne ondulaire est réalisée de manière uniforme.
  5. Ensemble de coupe (10) selon l'une quelconque des revendications précédentes, dans lequel les éléments dentés latéraux les plus extérieurs (46, 56, 66, 76) sont plus grands que les éléments dentés adjacents (46, 56, 66, 76) .
  6. Ensemble de coupe (10) selon l'une des revendications précédentes, dans lequel les bords de coupe (48, 58, 68, 78) des éléments dentés (46, 56, 66, 76) situés plus en avant sont plus minces que ceux situés plus en arrière.
  7. Ensemble de coupe (10) selon l'une quelconque des revendications précédentes, dans lequel la lame (40, 50, 60, 70) comprend au moins 4 éléments dentés (46, 56, 66, 76) de longueurs différentes.
  8. Ensemble de coupe (10) selon l'une quelconque des revendications précédentes, dans lequel les éléments dentés (46, 56, 66, 76) sont disposés longitudinalement en ordre croissant et décroissant.
EP20171357.5A 2020-04-24 2020-04-24 Ensemble de coupe pourvu de bord de coupe ondulaire Active EP3900896B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ES20171357T ES2930094T3 (es) 2020-04-24 2020-04-24 Conjunto de corte con filo ondulado
EP20171357.5A EP3900896B1 (fr) 2020-04-24 2020-04-24 Ensemble de coupe pourvu de bord de coupe ondulaire
PL20171357.5T PL3900896T3 (pl) 2020-04-24 2020-04-24 Zestaw tnący z falistą krawędzią tnącą
CN202110330022.4A CN113547547B (zh) 2020-04-24 2021-03-29 具有波状剪刃的修剪器
US17/237,425 US11820030B2 (en) 2020-04-24 2021-04-22 Cutting set with wave-shaped cutting edge
AU2021258500A AU2021258500A1 (en) 2020-04-24 2021-04-26 Blade arrangement with wave-shaped cutting edge
PCT/EP2021/060842 WO2021214342A1 (fr) 2020-04-24 2021-04-26 Agencement des lames ayant un bord de coupe en forme d'onde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20171357.5A EP3900896B1 (fr) 2020-04-24 2020-04-24 Ensemble de coupe pourvu de bord de coupe ondulaire

Publications (2)

Publication Number Publication Date
EP3900896A1 EP3900896A1 (fr) 2021-10-27
EP3900896B1 true EP3900896B1 (fr) 2022-08-17

Family

ID=70464887

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20171357.5A Active EP3900896B1 (fr) 2020-04-24 2020-04-24 Ensemble de coupe pourvu de bord de coupe ondulaire

Country Status (7)

Country Link
US (1) US11820030B2 (fr)
EP (1) EP3900896B1 (fr)
CN (1) CN113547547B (fr)
AU (1) AU2021258500A1 (fr)
ES (1) ES2930094T3 (fr)
PL (1) PL3900896T3 (fr)
WO (1) WO2021214342A1 (fr)

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EP3854542B1 (fr) 2020-01-23 2023-12-13 Braun GmbH Tondeuse à barbe électrique
EP3854541B1 (fr) 2020-01-23 2024-06-26 Braun GmbH Tondeuse électrique pour barbe
EP3854538B1 (fr) 2020-01-23 2024-10-16 Braun GmbH Tondeuse à barbe électrique
EP3854540B1 (fr) * 2020-01-23 2025-03-19 Braun GmbH Tondeuse à barbe électrique
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Also Published As

Publication number Publication date
AU2021258500A1 (en) 2022-12-15
CN113547547B (zh) 2024-03-01
US11820030B2 (en) 2023-11-21
EP3900896A1 (fr) 2021-10-27
ES2930094T3 (es) 2022-12-07
WO2021214342A1 (fr) 2021-10-28
CN113547547A (zh) 2021-10-26
PL3900896T3 (pl) 2023-07-10
US20210331338A1 (en) 2021-10-28

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