EP3900896A1 - Ensemble de coupe pourvu de bord de coupe ondulaire - Google Patents

Ensemble de coupe pourvu de bord de coupe ondulaire Download PDF

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Publication number
EP3900896A1
EP3900896A1 EP20171357.5A EP20171357A EP3900896A1 EP 3900896 A1 EP3900896 A1 EP 3900896A1 EP 20171357 A EP20171357 A EP 20171357A EP 3900896 A1 EP3900896 A1 EP 3900896A1
Authority
EP
European Patent Office
Prior art keywords
blade
tooth elements
comb
cutting edge
tooth
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
EP20171357.5A
Other languages
German (de)
English (en)
Other versions
EP3900896B1 (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 PL20171357.5T priority Critical patent/PL3900896T3/pl
Priority to EP20171357.5A priority patent/EP3900896B1/fr
Priority to ES20171357T priority patent/ES2930094T3/es
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 cutting set for a hair clipper in which the cutting edge is designed to be undulating.
  • the US 7841901 B2 a blade set for a hair clipper comprising at least one stationary blade with a plurality of stationary blade teeth and at least one movable blade with a plurality of movable blade teeth configured to reciprocate laterally 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 occurs exceeds a certain speed.
  • the U.S. 5,933,964 discloses a hair clipper for cutting strands of hair comprising a set of blades having a stationary blade with a plurality of stationary blade teeth arranged in a row so that strands of hair enter between adjacent stationary teeth as the set of blades moves through the strands of hair.
  • the stationary bucket teeth have angled side cutting edges and tips, and the side cutting edges of adjacent teeth root where they intersect.
  • a movable blade has several movable blade teeth that are also arranged in a row. The movable blade teeth complement the stationary blade teeth and go over the stationary blade teeth to cut some of the hair strands.
  • the movable 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 arrangement which simplifies the cutting of transitions so that even non-professional users can create a beautiful transition.
  • a blade arrangement according to the invention for a hair clipper comprises a comb with a front cutting edge which is formed from tooth elements, a blade with a front cutting edge which is formed from tooth elements, the cutting edge sloping at the front end towards the lower cutting edge and the
  • 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 / curved according to the wave shape. Due to the different lengths of the tooth elements and the curved cutting edges of the tooth elements, the hair is cut in slightly different lengths, which greatly improves the cut pattern in the transitions with normal use of the hair clipper without any special 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 top of the shaft to the bottom of the shaft is in particular between 1 mm and 4mm, preferably a maximum of 3 mm, more preferably a maximum of 2mm.
  • the point of the wave that is furthest to the front is referred to as the wave tip, and the point that is furthest to the rear with the wave base.
  • 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 shaft tip. This creates a uniform and, in particular, symmetrical blade arrangement which simplifies manufacture.
  • the cutting edges of the tooth elements that are further to the front are made 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 preferably arranged lengthwise in ascending and descending order. This makes the cut of the transition more even and more beautiful.
  • the direction indication "front” denotes a direction of the tooth elements (e.g. in Figure 4b top) and “back” the opposite direction (in Figure 4b below).
  • Figure 1 shows an exploded view of the individual parts of a blade assembly 10 according to the invention
  • Figure 2 the blade arrangement can be seen in the assembled state.
  • 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 common with hair clippers.
  • a blade arrangement 10 comprises a comb 30, a blade 40, 50, 60, 70, a pretensioning element 16, which is referred to below as a spring element 16, and a connecting device.
  • the connection device serves to make the comb 30 and the upper blade 40, 50, 60, 70 comprise a large number of components, the functions and number of which can vary.
  • the connecting device comprises a holding element 12 which is fastened to the comb 30 with fastening means 13 and which is placed on the handle of the hair clipper and fastened 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 with 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.
  • the oscillation takes place in particular 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 the individual parts of the blade assembly are installed.
  • Figure 1 and Figure 2 is the embodiment of the blade 40 from Figure 4 to be seen, but this is to be understood only as an example and the blade arrangement described can be used with any blade.
  • Figure 3 the comb 30 is shown.
  • Figure 3a Figure 13 is a view of the top of the comb 30 when the blade assembly 10 is mounted on a handle of the hair clipper.
  • the comb 30 has a front edge 34 which is formed with tooth elements 36.
  • the comb has two bores 38, to which the connecting device is fastened with the fastening means 13.
  • the tooth elements 36 are preferably tapered, the lower side (see Figure 3b ), on which the blade 40, 50, 60, 70 rests, is flat so that the cut is not impaired. That is, the inclination 31 is formed on the upper side and can in particular also begin before the tooth elements.
  • FIG. 3 is a side view of the comb 30.
  • the bores 38 are arranged in recesses 37.
  • a recess 35 is also formed in front of the tooth elements 36.
  • the blades 40, 50, 60, 70 are inserted into these recesses in such a way that they can be moved back and forth by the actuating element and laterally by the drive.
  • FIGS Figures 4 to 7 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.
  • an isometric view of the underside of the blades 40, 50, 60, 70 is shown in each case.
  • the Figures 4b , 5b , 6b and 7b are top views of the blades 40, 50, 60, 70 abutting the comb 30, and
  • FIGS Figures 4b , 5b , 6b and 7b are views of the underside of the blades 40, 50, 60, 70.
  • a fastening recess 41, 51, 61, 71 for fastening 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 the blade 40 is shown. From the side it can be seen that the blade 40 has two bearing feet 43, which in the assembled state in the recesses 35, 37 are included. The feet 43 and the recesses 35, 37 are designed in such a way that the movement of the blade 40 forwards / backwards by the actuating element 18 is guaranteed.
  • the connecting part 43 so to speak the bridge 43, connects the feet of the blade 40 to one another.
  • FIG. 4 is a rear view of the blade 40 and FIG. 4f is a front view showing the cutting edges of the tooth elements 46. These views are in the in Figure 5 , 6th and 7th shown embodiments not shown. These blades 50, 60, 70 are designed accordingly.
  • the tooth elements 46, 56, 66, 76 are formed on the front edge 44, 54, 64, 74 of the blade 40.
  • the tooth elements 46, 56, 66, 76 are formed in a wave shape. That means the extension to the front (above in Figure 4b ) of the individual tooth elements 46 is adapted to a particularly uniform wavy line.
  • the tooth elements 46, 56, 66, 76 have different lengths to the front, so that at least 3 different long tooth elements 46, 56, 66, 76 are present (short, medium, long) and a shaft (from a longest tooth element 46 , 56, 66, 76 to the next longest tooth element 46, 56, 66, 76).
  • the outer tooth elements 46, 56, 66, 76 are preferably also the largest tooth elements 46, 56, 66, 76, so that the wavy line always ends at a maximum. Furthermore, a tooth 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 inclined on the underside (the side which is directed away from the comb 30). In Figure 4d this can be seen from the side. Also in the top 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 uniform (that is to say always recurring in the same way) and more preferably also symmetrical to a perpendicular through the wave maximum.
  • FIG 4g a wavy line is shown which is applied to the cutting edges 48 of the tooth elements 46. It can be seen how the cutting edges 48 are designed in accordance with the wavy line. Here the “short shaft” is shown, but the cutting edges of the one described below “Middle wave” and the “long wave” are formed with corresponding wavy lines.
  • FIG. 5 a second embodiment of the tooth elements is shown.
  • the structure of the blade 50 is the same as in FIG Figure 4 except that here the wave form has a longer wave, ie one wave 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 tooth elements is shown.
  • the structure of the blade 60 is basically the same as in the first embodiment shown in FIG Figure 4 is shown.
  • the wave shape here has an even longer wave, that is to say the one wave here comprises 10, 11 or even more tooth elements 66.
  • This wave shape is referred to as a "long wave”.
  • the cutting edges 58 are curved in accordance with the wavy line.
  • FIG. 7 a further embodiment is shown.
  • the structure of the blade 70 is also the same as in the first embodiment shown in FIG Figure 4 is shown.
  • the cutting edges 78 of the tooth elements 76 do not have any curvature, but rather the wave shape is laid through the center 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 reproduced with these tooth elements 76, with two adjacent corrugations always "sharing" a maximum.
  • a preferred embodiment of the blade 70 is shown in which a shaft consists of 5 tooth elements each, ie the wavy line begins with a long tooth element 76 ', followed by a middle tooth element 76 ", a short tooth element 76'" and again a middle tooth element 76 ".
  • the final long tooth element 76 ' is at the same time the start of the adjacent shaft.
  • This embodiment can also be applied to longer wave shapes by adding further tooth elements 76 of different lengths (e.g. a tooth element that is longer than the middle tooth element 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)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Processing Of Meat And Fish (AREA)
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
PL20171357.5T PL3900896T3 (pl) 2020-04-24 2020-04-24 Zestaw tnący z falistą krawędzią tnącą
EP20171357.5A EP3900896B1 (fr) 2020-04-24 2020-04-24 Ensemble de coupe pourvu de bord de coupe ondulaire
ES20171357T ES2930094T3 (es) 2020-04-24 2020-04-24 Conjunto de corte con filo ondulado
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 true EP3900896A1 (fr) 2021-10-27
EP3900896B1 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)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210229300A1 (en) * 2020-01-23 2021-07-29 Braun Gmbh Electric beard trimmer
USD968709S1 (en) * 2022-04-22 2022-11-01 Ningbo Iclipper Electric Appliance Co., Ltd. Clipper blade
US11731296B2 (en) 2020-01-23 2023-08-22 Braun Gmbh Electric beard trimmer
US11794362B2 (en) 2020-01-23 2023-10-24 Braun Gmbh Electric beard trimmer
US11897151B2 (en) 2020-01-23 2024-02-13 Braun Gmbh Electric beard trimmer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230405854A1 (en) * 2022-06-15 2023-12-21 Wahl Clipper Corporation Variable pitch, multiple root bladeset for hair cutting

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US20090119932A1 (en) * 2007-11-10 2009-05-14 Specialife Industries Limited Curved and toothed cutting blade for a trimmer and a grinding wheel for manufacturing therefor
US7841901B2 (en) 2009-03-31 2010-11-30 Hon Hai Precision Ind. Co., Ltd. Electrical connector assembly with an integrated circuit module

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Publication number Priority date Publication date Assignee Title
DE656403C (de) * 1935-10-23 1938-02-04 Maximilian Uhr Haarschneidemaschine
US2174130A (en) * 1937-06-10 1939-09-26 Looper Omer Jennings Hair clipper
US5933964A (en) 1996-07-17 1999-08-10 Wahl Clipper Corporation Cutter blade for hair clippers
US5964037A (en) * 1998-06-29 1999-10-12 Clark; Reginald Hair clipper blade system for producing a fade haircut
GB2347377A (en) * 1999-03-03 2000-09-06 Sunbeam Corp A shearing handpiece
US20090119932A1 (en) * 2007-11-10 2009-05-14 Specialife Industries Limited Curved and toothed cutting blade for a trimmer and a grinding wheel for manufacturing therefor
US7841901B2 (en) 2009-03-31 2010-11-30 Hon Hai Precision Ind. Co., Ltd. Electrical connector assembly with an integrated circuit module

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210229300A1 (en) * 2020-01-23 2021-07-29 Braun Gmbh Electric beard trimmer
US11731296B2 (en) 2020-01-23 2023-08-22 Braun Gmbh Electric beard trimmer
US11731294B2 (en) * 2020-01-23 2023-08-22 Braun Gmbh Electric beard trimmer
US11794362B2 (en) 2020-01-23 2023-10-24 Braun Gmbh Electric beard trimmer
US11897151B2 (en) 2020-01-23 2024-02-13 Braun Gmbh Electric beard trimmer
US12011841B2 (en) 2020-01-23 2024-06-18 Braun Gmbh Electric beard trimmer
USD968709S1 (en) * 2022-04-22 2022-11-01 Ningbo Iclipper Electric Appliance Co., Ltd. Clipper blade

Also Published As

Publication number Publication date
AU2021258500A1 (en) 2022-12-15
CN113547547B (zh) 2024-03-01
CN113547547A (zh) 2021-10-26
EP3900896B1 (fr) 2022-08-17
US20210331338A1 (en) 2021-10-28
WO2021214342A1 (fr) 2021-10-28
PL3900896T3 (pl) 2023-07-10
ES2930094T3 (es) 2022-12-07
US11820030B2 (en) 2023-11-21

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