EP0086536B1 - Assemblage des lames coupantes à mouvement de va-et-vient pour rasoir à sec - Google Patents

Assemblage des lames coupantes à mouvement de va-et-vient pour rasoir à sec Download PDF

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Publication number
EP0086536B1
EP0086536B1 EP83200202A EP83200202A EP0086536B1 EP 0086536 B1 EP0086536 B1 EP 0086536B1 EP 83200202 A EP83200202 A EP 83200202A EP 83200202 A EP83200202 A EP 83200202A EP 0086536 B1 EP0086536 B1 EP 0086536B1
Authority
EP
European Patent Office
Prior art keywords
cutter
knife
lamella
lamellae
pair
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
Application number
EP83200202A
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German (de)
English (en)
Other versions
EP0086536A1 (fr
EP0086536B2 (fr
Inventor
Adam Koroncai
Alfred Nowak
Herbert Piber
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
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Filing date
Publication date
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Application filed by Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of EP0086536A1 publication Critical patent/EP0086536A1/fr
Application granted granted Critical
Publication of EP0086536B1 publication Critical patent/EP0086536B1/fr
Publication of EP0086536B2 publication Critical patent/EP0086536B2/fr
Expired 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
    • 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
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards
    • B26B19/42—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards providing for straightening the hair to be cut, e.g. by means of bristles; providing for tensioning the skin, e.g. by means of rollers, ledges

Definitions

  • the invention relates to a back and forth drivable bottom knife for dry shavers, which is intended to interact with a Siebscher film and has a number of spaced apart, arranged on at least one support, curved knife blades, at least the distances between one knife blade and the two neighboring ones Knife blades are not the same size.
  • Such a lower knife is known from JP-U 49-2698.
  • the knife lamellae are arranged at different mutual distances, which are to change either block-wise or continuously.
  • the distances between the knife blades are mainly smaller in the middle area of the lower knife, because this area is mainly involved in shaving.
  • the holes in the screen shear foil are crossed more often by the knife blades and the areas with knife blades located further apart ensure that the screen shear foil comes into close contact maintained with the lower knife.
  • the distance between two knife blades should not be less than a certain amount, because otherwise the degree of coverage of the holes in the screen shaving foil by the knife blades will be too large, which means that the hair enters the Holes in the screen shaving foil are hindered and the shaving performance is reduced.
  • the invention has set itself the task of further improving a lower knife of the type mentioned in terms of the shaving performance that can be achieved with it.
  • This object is achieved according to the invention in that in each case two knife blades are grouped in mirror image pairs, the distance between the two knife blades of a group being smaller than the distance between a knife blade of this group and the knife blade of a neighboring group lying next to it, at least in the apex region of the knife blades. or the knife blades of a group resiliently abut at least in the apex area. In this way, the two knife blades of a group can interact due to their smaller distance from each other in the course of cutting a hair so that the hair in question is cut off particularly short.
  • the knife blades grouped in pairs are flat and stiff in themselves. Such knife blades are known per se; It is essential to the invention that such knife blades are grouped in pairs, the distance between the two knife blades of a group being smaller than the distances thereof from the adjacent groups of knife blades.
  • the first knife blade of a group lying in front cuts off a hair once, a pull being exerted on the hair in question, forming a local cutting gap, so that it is pulled out of its skin pocket somewhat becomes.
  • the remaining hair stub straightens up again in the hole in the screening shear film, so that it is cut off again by the immediately following second knife blade of this group.
  • the grouping of pairs of stiff knife blades, which are both effective as cutting knives, with a smaller spacing means that each hair is cut twice in quick succession, which results in a shorter cut of the hair and thus one gives better shaving performance.
  • the greater distance between the ⁇ trade fair names '' of two neighboring groups of knife blades ensures that hair can enter the holes of the screen shaving foil without hindrance.
  • the paired knife blades are designed to be elastically resilient in at least one of the two directions of the reciprocating drive movement for the lower knife, the front knife blade of each of the two knife blades of a group, viewed in each of the two directions of movement in its function resilient leading knife and the rear knife blade is effective as a stiff cutting knife in its function.
  • a leading knife is understood to mean a hair pulling element which pulls the hair out of its skin pocket before it is cut off by the subsequent cutting knife, as is the case for example in AT-PS 333.151, AT-PS 360.375 or also from US-PS 3,088,205 and DE-OS 2,850,827 emerges.
  • each of the two knife blades of a group in accordance with the direction of inclination of its angled section, is effective in one of the two directions of movement of the lower knife as a functionally flexible leading knife and in the other direction of movement of the lower knife as a stiff cutting knife in its function.
  • each knife lamella is formed by two lamella sections angled in opposite directions. This makes it possible to arrange the two knife blades, each forming a group, on the carrier side at a somewhat greater distance, which can be advantageous with regard to their mounting on the carrier.
  • the angled lamella sections of the two knife lamellae forming a group lie in the apex region with prestress. This particularly favors a perfect interaction of the two knife blades forming a group in the course of a cutting process.
  • the self-cleaning with regard to adhering hair particles results from the knife lamella sliding smoothly against one another in the course of the cutting process.
  • the angled lamella sections in the apex region of the two knife lamellae forming a group are spaced apart from one another at their free ends. In this way, a knife blade effective as a leading knife, since it is not supported directly, is more resilient and bendable over a longer distance, which both favors the hair pulling effect.
  • the angled lamella sections in the apex region of the two knife lamellae forming a group each extend in a plane running perpendicular to the direction of movement of the lower knife. This makes it possible to utilize a larger circumferential area of the knife blades for the function as a leading knife.
  • each of the two knife blades of a group is supported in the direction of the reciprocating drive movement for the lower knife in which it is intended to act as a cutting knife, which gives it such a stiffness that the cutting processes, in particular run exactly and safely.
  • the desired elastic resilience of the knife blades can be achieved by appropriate choice of the hardness of their material and / or their thickness.
  • the blade slats can be largely optimally dimensioned with regard to their cutting properties, because their desired elastic compliance is achieved or increased by the provision of the recess.
  • the carrier-side distance between a knife blade of a group and the knife blade of the adjacent group lying next to it is selected in the order of magnitude of twice the carrier-side distance between the knife blades of a group.
  • Fig. 1 shows a lower knife with flat, stiff, paired knife blades arranged in section transverse to the direction of the reciprocating drive movement along the line II in Fig. 2.
  • Fig. 2 shows the lower knife of Fig. 1 in a longitudinal section along the line 11-11 in Fig. 1.
  • Figs. 3a to 3d the sequence of movements when cutting a hair with a lower knife according to Figs. 1 and 2 is shown schematically.
  • Fig. 4 shows in the representation of Fig. 1 and in section along the line IV-IV in Fig.
  • FIG. 5 shows the lower knife according to FIG. 4 in a longitudinal section along the line VV in FIG. 4.
  • FIGS. 6a to 6c the sequence of movements when cutting a hair with a lower knife according to FIGS. 4 and 5 is shown schematically.
  • Fig. 7 shows in longitudinal section a lower knife with flat, resilient knife blades, in addition to each of the two knife blades of a group, depending on the direction of the neighboring group, a rigid support is provided.
  • FIGS. 8a and 8b schematically show the sequence of movements when cutting a hair with a lower knife according to FIG. 7.
  • FIGS. 9a to 9f schematically show different exemplary embodiments of lower knives with knife blades, which are provided with different bends.
  • the lower knife shown in FIGS. 1 and 2 has two supports 1 and 2, which are formed by tubes and which carry curved knife blades 3.
  • the knife fins 3 are pushed onto the carriers 1 and 2 at a distance from one another with corresponding bores, their position on the carriers being able to be fixed, for example, in that the tubes forming the carriers are widened from the inside after the knife fins are pushed on.
  • the knife blades can be embedded in a carrier made of plastic.
  • Such a lower knife is used in a known manner to interact with a curved screen shear film having a plurality of holes, it being pressed resiliently into its curvature.
  • the lower knife is driven back and forth by the dry shaving apparatus, for which purpose it is provided with a coupling part, not shown, which can be fastened to the carriers 1 and 2, for example, by means of lugs extending between the knife lamellae.
  • Such a lower knife should be provided with as many knife blades as possible, since each knife blade forms a cutting edge in both directions of the reciprocating drive movement, the shaving performance of the dry shaving apparatus increasing the more cutting edges are provided.
  • the knife blades must not be arranged too close to one another, because otherwise they cover the holes provided in the sieve shaving foil, which serve to enter the hair, to such an extent that the hair is prevented from entering the holes Decrease in shaving performance.
  • the choice of the thickness of the knife blades is of particular importance.
  • the thickness of the knife blades is 0.1 mm and the distance between two adjacent knife blades is 1.15 mm.
  • Such a bottom knife can, for example, interact with a Siebscher film, the thickness of which is 0.05 mm and the holes have a diameter of 0.6 mm, the webs remaining between the holes having a width of 0.23 mm.
  • the knife blades 3 are grouped in pairs; 2, these groups are designated by 4. In the apex region of the knife blades indicated schematically in FIG. 1 by a dashed rectangle 5, the distance a between the two knife blades of a group 4 is smaller than the distance b between the knife blades facing one another of two adjacent groups 4.
  • the knife blades 3 here are flat and rigid in itself, as is known per se.
  • the thickness s of a knife blade 3 with 0.1 mm, the distance a between the two knife blades 3 of a group 4 with twice the thickness of a knife blade and the distance b between the knife blades 3 facing each other of two neighboring ones Groups 4 with three times the distance a can be selected.
  • FIG. 3a it can be seen how the hair 7 is clamped between the web 11 delimiting the hole 8 in the direction of movement 10 of the screen shear film 9 and the first knife blade 3 of a group 4 of two knife blades 3, also seen in the direction of movement 10, before it becomes Cutting process is coming.
  • Fig. 3b shows the beginning of the cutting process, in which a local cutting gap is formed in the area of this hole 8, with curvature of the sieve shear foil 9 in the direction of the skin 6, and slightly pulls the aforementioned first knife blade 3 on the hair 7, the latter being curved and something is pulled out of his skin pocket.
  • the first knife lamella 3 cuts off the hair end 12, as is indicated in FIG. 3c.
  • the paired arrangement of the knife blades in groups with a smaller distance between the two knife blades in a group and the succession of the groups of knife blades with a larger distance means that on the one hand the two knife blades of a group cut the hair shorter and on the other hand the hair entering the Holes of the screen shaving foil are not hindered, which is the case for the entire length of the lower knife, so that a very good shaving performance is obtained with such a lower knife.
  • the knife blades 3 are again arranged in pairs in groups 4.
  • knife blades are used which are designed to be elastically flexible in the two directions of the reciprocating drive movement for the lower knife, which can be done by the choice of their thickness and / or the hardness of the material used.
  • the individual knife blades are also provided with a recess 14 on the carrier side. The resilience of the knife blades ensures that of the two knife blades 3 of a group 4, viewed in each of the two directions of movement, the front knife blade acts as a so-called leading knife and the rear knife blade as a so-called cutting knife, which will be discussed in more detail below.
  • the blade lamellae 3 are designed such that in the area of the two supports 1 and 2 they have lamella sections 15 which are parallel to one another and run transversely to the direction of movement of the lower knife and are used for mounting the blade lamellae on the two supports, to which lamella sections 16 are connected towards the apex region 5 who compared to the Ab-. cut 15 are angled.
  • the knife blades 3 are mounted on the supports 1 and 2 in such a way that the bends of the two knife blades 3 of a group 4 formed by the sections 16 are directed toward one another in the apex region 5.
  • these bends are carried out in such a way that the sections 16 form an acute angle of the order of 100 with a plane 17 running perpendicular to the direction of movement of the lower knife, as can be seen in FIG. 5.
  • the arrangement of the knife blades 3 on the carriers 1 and 2 is in this case further made such that the angled blade segments 16 of the two blade blades 3 forming a group 4 lying in the apex region 5 abut one another with prestress.
  • the carrier-side distance c between the two knife blades 3 of a group 4 is selected to be smaller than the carrier-side distance d between the facing knife blades 3 of two adjacent groups 4. It has proven to be very favorable here if the distance c is of the order of five times the thickness s of a knife blade and the distance d in the order of twice the distance c is selected, the thickness s of a knife blade being 0.08 mm.
  • the knife blades which are punched out in an arc from a flat material are then provided with the bend formed by the lamella section 16 and then in pairs, with mutually directed bends, pushed onto the tubes forming the supports 1 and 2 and in compliance therewith the corresponding distances c and d fixed.
  • the circumferential surfaces of all knife blades are then subjected to a common grinding process, which ensures that the screen shear foil fits snugly against the entire circumferential area of the knife blades.
  • FIGS. 6a to 6c show the state before a cutting process, in which a hair 7 has passed through a hole 8 in the screen shear film 9 and already between the web 11 of the screen shear film 9 delimiting this hole 8 in the direction of movement 10 and the first knife blade 3 also seen in the direction of movement 10 a group 4 of two knife blades 3 is clamped.
  • section 16 of this first knife lamella 3 hooks onto hair 7 and pulls on it, section 16 of this knife lamella being bent towards the second knife lamella 3 of this group 4 due to its elastic flexibility.
  • this knife lamella also being bent in the same direction due to its elastic compliance, with the result that its angled section 16 is erected and stretched substantially straight.
  • the screen shear film 9 is locally deformed and shifted in the direction of the skin 6.
  • Such a cutting process cuts a hair shorter than is normally possible.
  • Three factors are now relevant for this. The most important factor is that the first knife blade, which is moving in the direction of movement of the lower knife, pulls on the hair 7 before the actual cutting process, so that it is pulled out of its hair pocket a little and pulled further into the hole 8 of the screening shear film, resulting in a longer one Hair piece is available for the cutting process. Furthermore, an additional piece of hair 7 is pushed into the hole 8 of the sieve shear film by the local deformation of the sieve shear film 9 in the region of the hole 8, in which the film is pressed towards the skin, and is thus also subjected to the cutting process.
  • the blade blade 3 lying in front in the direction of movement of the lower blade in a group 4 of blade blades 3 is thus a functionally flexible leading blade and thus a hair pulling element and the blade blade 3 following in this direction of motion of the lower blade, which is only effective of the leading knife gains in stiffness, effective as a stiff cutting knife in its function.
  • the construction of the lower knife is very simple, since only two knife blades fulfill these functions and it is not necessary to assign a separate leading knife to each of the two directions of movement, as is known per se.
  • the two knife lamellae 3 forming a group 4 of course only lie against one another with their angled sections 16 exactly at the apex.
  • the distance between these two knife blades increases on both sides until the end of the bend on the carrier side is reached, after which the two knife blades with their sections 15 at a distance c run parallel to one another.
  • the result of this is that the mode of operation of the knife blades 3 as a leading knife and hair pulling element is essentially limited to the apex region 5 of the sections 16 of the knife blades, but this does not constitute a significant disadvantage.
  • the area mainly involved in a shave is, because of the usual handling of a dry shaver, the apex area, but where the desired functionality is guaranteed.
  • a further advantageous effect occurs here, which is due to the fact that the distance between the two knife blades 3 of a group 4 is chosen to be smaller than the distance between the knife blades 3 facing one another of two adjacent groups 4. To the extent that there is on both sides the distance between the two knife blades 3 of a group 4 in the circumferential direction of the apex region, namely their elastic flexibility also decreases, which has the consequence that both knife blades become effective laterally from the apex region as stiff cutting knives and consequently those conditions occur when the hair is cut off, which have been described in connection with the embodiment of FIGS. 1 and 2.
  • resilient knife blades 3 are used again, which are, however, of flat design here.
  • Two of these knife blades 3 each again form a group 4, the distance e between the two knife blades 3 of a group 4 being chosen smaller than the distance f between the knife blades 3 facing one another of two adjacent groups 4.
  • the thickness s of a knife blade is 0.08 mm
  • the distance e can be selected approximately equal to five times the thickness s and the distance f approximately equal to twice the distance e.
  • each of the two knife blades 3 of a group 4 in addition to each of the two knife blades 3 of a group 4, each in the viewing direction towards the group 4 adjacent to it, a stiff support 18 is provided, against which the relevant blade blades 3 oppose this viewing direction during the movement of the measuring knife at least partially invested.
  • each of the two knife blades 3 of a group 4 is resilient in the direction of the adjacent knife blade of the same group, whereas each of the two knife blades 3 of a group 4 is rigid in the direction of the group 4 adjacent to it, since the support adjacent to it 18 counteracts yielding in this direction.
  • the supports 18 are formed by strip-shaped parts which are provided with holes corresponding to the knife blades, so that, like the knife blades, they rest on the carrier of the lower knife formed by tubes, of which only the carrier 2 is visible in FIG. 7, are postponed. After appropriate positioning of the knife blades 3 and the supports 18 with respect to their mutual positions, they are fixed on the carriers.
  • the rigidity that a knife blade receives when it is applied to the adjacent support can be determined by appropriate dimensioning of the support, for which the choice of material and shape are decisive.
  • such supports can also be designed differently, such as, for example, as spacers which are inserted between the knife blades.
  • FIGS. 8a and 8b The mode of operation of such a lower knife is illustrated with the aid of FIGS. 8a and 8b.
  • 8a again shows a hair 7 which has penetrated into a hole 8 of a sieve shear film 9 and which is already between the web 11 of the sieve shear film 9 delimiting this hole 8 in the direction of movement 10 of the lower knife and the first knife lamella 3 of a group 4 which also runs in this direction of movement is clamped by two knife blades 3.
  • this leading first knife lamella 3 lying in the apex area hooks into the hair 7, after which this knife lamella 3 bends in the direction of the second knife lamella 3 following it and comes into contact with it, at this time this second knife blade 3 also reaches the hair 7, as shown in FIG. 8b.
  • this bending of the leading first blade lamella 3 it pulls on the hair 7, so that it is pulled out of its hair pocket somewhat and pulled further into the hole 8 of the screening shear foil. In this way, the blade lamella 3 advancing in the current direction of movement of the lower blade is again as a leading knife forming a pulling element effective.
  • the second knife lamella 3 then initiates the cutting process, since when viewed in this direction of movement, due to its contact with the support 18 adjacent to it, it is essentially stiff and thus acts as a cutting knife. In this way, longer pieces of hair are cut off than is known per se from the mode of operation of a leading knife.
  • a knife blade which acts as a leading knife is yielded over a distance determined by the distance e between the two knife blades 3 of a group 4, since the knife blade bends up to the knife blade which forms the cutting knife and follows it. In this way, there is a longer hair pulling area during which the leading knife pulls on the hair and pulls it out of the hair pocket, resulting in a shorter cut of the hair.
  • such an operation of the two knife blades 3 forming a group 4 namely on the one hand as a lead knife and on the other hand as a cutting knife, will mainly occur in the apex region of the knife blades, since the blade blades are most flexible there.
  • the knife blade which is in each case active as a lead knife, can also yield in the circumferential direction from areas on both sides somewhat further away and thus be effective as a lead knife.
  • the two knife blades forming a group then act again as two rigid cutting knives, which come into effect shortly after one another, due to their increasing stiffness and their smaller spacing from one another, so that in these areas too, the hairs are cut off shorter takes place without the entry of hair into the holes of the sieve shaving foil being hindered because the distance between the facing knife blades of two adjacent groups of knife blades is again greater than the distance between the two knife blades of a group.
  • the two knife blades 3 of a group 4 in the apex region 5 are provided with an angled connection which adjoins the support-side blade section 15 and is formed by a single blade section 16, analogously to the exemplary embodiment according to FIGS. 4 and 5
  • the angled lamella sections 16 have a greater inclination with respect to a plane 17 running perpendicular to the direction of movement of the lower knife, with the result that the carrier-side distances of the knife lamellas forming a group can be selected to be larger, thereby facilitating the assembly of such a lower knife .
  • FIG. 9 a the two knife blades 3 of a group 4 in the apex region 5 are provided with an angled connection which adjoins the support-side blade section 15 and is formed by a single blade section 16, analogously to the exemplary embodiment according to FIGS. 4 and 5
  • the angled lamella sections 16 have a greater inclination with respect to a plane 17 running perpendicular to the direction of movement of the lower knife, with the result that
  • the exemplary embodiment according to FIG. 9b shows a similar arrangement to FIG. 9a, but the angled lamella sections 16 of the two knife lamellae 3 forming a group 4 lying in the apex region are at a distance h from one another at their free ends, which is analogous to the exemplary embodiment according to FIG. 7
  • What is achieved is that the area for the resilient adjustability of a knife blade effective as a leading knife is larger and thus the hair pulling effect is increased.
  • each knife lamella is formed by two sections 19 and 20 angled in opposite directions, the angled lamella sections 19 of the two knife lamellae 3 forming a group 4 each having a plane 17 perpendicular to the direction of movement of the lower knife Form angles of the order of 10 ° and attach them again with pre-tension Due to the opposite bending, the sections 20 are then inclined correspondingly more with respect to the plane 17.
  • FIG. 9d shows an arrangement of the knife blades 3 analogous to FIG. 9c, but the angled blade sections 19 of the two knife blades 3 forming a group 4, which are located in the apex region, run with their free ends at a distance from one another, just as in the embodiment according to FIG. 9b.
  • the angling of the knife lamellae is again formed by two lamella sections 19 and 20 angled in opposite directions, but here the lamella sections 19 lying in the apex region of the two knife lamellae 3 forming a group 4 are each in a plane 17 running perpendicular to the direction of movement of the lower knife.
  • the lamella sections 19 rest against one another in the apex region with prestress. Accordingly, the two mutually parallel lamella sections 19 of the two knife lamellae 3 forming a group 4 adjoin one another flatly.
  • a knife lamella 3 When a knife lamella 3 functions as a leading knife, its section 19 then moves along the section 19 of the other knife lamella 3 of the relevant group 4 of knife lamellae 3, which acts as a cutting knife.
  • the functional area for a leading knife then extends over the Whole circumferential area of the sections 19, but only a smaller adjustment path is obtained for the knife blade which acts as a leading knife.
  • An enlargement of this adjustment path for the knife blade acting as the leading knife can be obtained again if the angled sections 19 of the two knife plates 3 forming a group 4 run at a distance h from one another, as the embodiment according to FIG. 9f shows.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Dry Shavers And Clippers (AREA)
  • Cosmetics (AREA)

Claims (14)

1. Couteau inférieur à mouvement de va-et-vient pour des rasoirs à sec, qui est destiné à coopérer avec une grille de coupe (9) et qui comporte un certain nombre de lames (3) de forme arrondie disposées les unes à côté des autres, espacées les unes des autres et montées sur au moins un support (1, 2), étant entendu qu'au moins les distances entre une lame de couteau et les deux lames de couteau voisines sont différentes, caractérisé en ce que chaque fois deux lames de couteau sont groupées par paires de manière énantiomorphe, étant entendu qu'au moins dans la zone du sommet des lames de couteau, la distance (a) entre les deux lames de couteau d'un groupe (4) est inférieure à la distance (b) entre une lame de couteau de ce groupe et la lame voisine appartenant à un groupe suivant ou que les lames de couteau d'un groupe sont appliquées élastiquement l'une contre l'autre au moins dans la zone du sommet.
2. Couteau inférieur suivant la revendication 1, caractérisé en ce que les lames de couteau groupées par paires sont des lames à faces planes et rigides par elles-mêmes.
3. Couteau inférieur suivant la revendication 1, caractérisé en ce que les lames de couteau groupées par paires sont élastiquement flexibles dans au moins un des deux sens du mouvement de va-et-vient du couteau inférieur, étant entendu que parmi les deux lames de couteau d'un groupe, vu dans chacun des deux sens du déplacement, la lame antérieure se comporte chaque fois comme couteau d'attaque flexible et la lame de couteau postérieure, comme couteau de coupe rigide.
4. Couteau inférieur suivant la revendication 3, caractérisé en ce que les deux lames de couteau d'un groupe sont pourvues, au moins dans là zone de leur sommet, d'un coude formé par au moins une section de lame, ces coudes étant orientés l'un vers l'autre.
5. Couteau inférieur suivant la revendication 4, caractérisé en ce que le coude de chaque lame de couteau est formé par une seule section de lame.
6. Couteau inférieur suivant la revendication 4, caractérisé en ce que le coude de chaque lame de couteau est formé par deux sections de lame coudées en sens opposés.
7. Couteau inférieur suivant l'une quelconque des revendications 4 à 6, caractérisé en ce que les sections de lames coudées se trouvant dans la zone de sommet des deux lames de couteau formant un groupe s'appliquent l'une contre l'autre avec précontrainte.
8. Couteau inférieur suivant l'une quelconque des revendications 4 à 6, caractérisé en ce que les sections de lames coudées se trouvant dans la zone de sommet des deux lames de couteau formant un groupe sont espacées d'une certaine distance au niveau de leurs extrémités libres.
9. Couteau inférieur suivant l'une quelconque des revendications 4 à 8, caractérisé en ce que les sections de lames coudées se trouvant dans la zone de sommet des deux lames de couteau formant un groupe forment chacune un angle aigu de l'ordre de 10° avec un plan perpendiculaire à la direction de mouvement du couteau inférieur.
10. Couteau inférieur suivant l'une quelconque des revendications 6 à 8, caractérisé en ce que les sections de lames coudées se trouvant dans la zone de sommet des deux lames de couteau formant un groupe s'étendent chacune dans un plan perpendiculaire à la direction de mouvement du couteau inférieur.
11. Couteau inférieur suivant l'une quelconque des revendications 3 à 10, caractérisé en ce qu'à côté de chacune des deux lames de couteau d'un groupe, vu chaque fois vers le groupe voisin, est prévu un élément de soutien (18) par lui-même rigide contre lequel la lame de couteau en question s'applique au moins partiellement lors du déplacement du couteau inférieur dans un sens opposé à ce sens de vision.
12. Couteau inférieur suivant l'une quelconque des revendications 3 à 11, caractérisé en ce qu'en vue d'augmenter leur flexibilité, les lames de couteau présentent au moins un évidement (14) du côté du support.
13. Couteau inférieur suivant l'une quelconque des revendications précédentes, caractérisé en ce que la distance entre les deux lames de couteau d'un groupe, du côté du support, est choisie de l'ordre du quintuple de l'épaisseur d'une lame de couteau.
14. Couteau inférieur suivant l'une quelconque des revendications précédentes, caractérisé en ce que la distance du côté du support entre une lame de couteau d'un groupe et la lame de couteau voisine appartenant au groupe suivant est choisie de l'ordre du double de la distance du côté du support entre les deux lames de couteau d'un groupe.
EP83200202A 1982-02-12 1983-02-09 Assemblage des lames coupantes à mouvement de va-et-vient pour rasoir à sec Expired EP0086536B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT544/82 1982-02-12
AT0054482A AT386149B (de) 1982-02-12 1982-02-12 Hin- und hergehend antreibbares untermesser fuer trockenrasierapparate

Publications (3)

Publication Number Publication Date
EP0086536A1 EP0086536A1 (fr) 1983-08-24
EP0086536B1 true EP0086536B1 (fr) 1985-06-26
EP0086536B2 EP0086536B2 (fr) 1989-08-30

Family

ID=3493412

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83200202A Expired EP0086536B2 (fr) 1982-02-12 1983-02-09 Assemblage des lames coupantes à mouvement de va-et-vient pour rasoir à sec

Country Status (7)

Country Link
US (1) US4536956A (fr)
EP (1) EP0086536B2 (fr)
JP (1) JPS58146382A (fr)
AT (1) AT386149B (fr)
CA (1) CA1206330A (fr)
DE (1) DE3360315D1 (fr)
ES (1) ES279772Y (fr)

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JPH06105969A (ja) * 1992-09-30 1994-04-19 Tokyo Electric Co Ltd 電気かみそり
US6233829B1 (en) * 1996-08-02 2001-05-22 The Gillette Company Razor blade
DE10352831B4 (de) * 2003-11-12 2007-06-14 Braun Gmbh Untermesser für einen oszillierend angetriebenen Scherkopf eines Rasierapparats
US7191522B2 (en) * 2004-06-04 2007-03-20 Rovcal, Inc. Cutting blade and cutting blade assembly for electric shaver
US20060143924A1 (en) * 2004-12-30 2006-07-06 Rovcal, Inc. Electric shaver
DE102009031626A1 (de) 2009-07-03 2011-01-05 Braun Gmbh Schereinheit für einen Trockenrasierer mit Hautprotektoren
DE102009031627A1 (de) 2009-07-03 2011-01-05 Braun Gmbh Untermesser-Baugruppe für Trockenrasierer
DE102009031628A1 (de) 2009-07-03 2011-01-05 Braun Gmbh Untermesser für Trockenrasierer

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US2286443A (en) * 1939-05-16 1942-06-16 John T Scully Shaving machine
US2400027A (en) * 1941-07-29 1946-05-07 John T Scully Shaving machine
AT181527B (de) * 1953-12-17 1955-03-25 Gerhard Dipl Ing Heyek Untermesser für den Scherkopf von Trockenrasierapparaten
GB921897A (en) * 1959-09-23 1963-03-27 Ever Ready Razor Products Ltd Improvements in dry shavers
DE1114115B (de) * 1960-02-11 1961-09-21 Max Braun Fa Messerblaetter aufweisender Messerkopf fuer den Scherkopf eines Trockenrasierapparates
US3028668A (en) * 1960-08-16 1962-04-10 Dechaux Charles Dry shaver with rocking cutter
US3088205A (en) * 1961-09-15 1963-05-07 Ellis Robert Dry shaver with hair pulling means to aid in cutting the hair
AT255283B (de) * 1964-04-28 1967-06-26 Payer Lux Messerblock für Trockenrasierapparate
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US4150482A (en) * 1977-11-14 1979-04-24 Sunbeam Corporation Modular cutter assembly for an electric dry shaver
NL7713041A (nl) * 1977-11-28 1979-05-30 Philips Nv Scheerapparaat.
NL7713047A (nl) * 1977-11-28 1979-05-30 Philips Nv Scheerapparaat.
JPS5650843A (en) * 1979-10-03 1981-05-08 Toyota Motor Corp Brake master cylinder device
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JPS5851892A (ja) * 1981-09-24 1983-03-26 Eisai Co Ltd 粗エラスタ−ゼの製造方法

Also Published As

Publication number Publication date
CA1206330A (fr) 1986-06-24
JPS58146382A (ja) 1983-08-31
ES279772Y (es) 1986-01-01
EP0086536A1 (fr) 1983-08-24
EP0086536B2 (fr) 1989-08-30
ATA54482A (de) 1985-06-15
ES279772U (es) 1985-06-01
DE3360315D1 (en) 1985-08-01
AT386149B (de) 1988-07-11
US4536956A (en) 1985-08-27

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