EP2227110A2 - Depilation head for depilation apparatus with tearing clamps - Google Patents

Depilation head for depilation apparatus with tearing clamps

Info

Publication number
EP2227110A2
EP2227110A2 EP08871626A EP08871626A EP2227110A2 EP 2227110 A2 EP2227110 A2 EP 2227110A2 EP 08871626 A EP08871626 A EP 08871626A EP 08871626 A EP08871626 A EP 08871626A EP 2227110 A2 EP2227110 A2 EP 2227110A2
Authority
EP
European Patent Office
Prior art keywords
cam
head according
movable
central shaft
cage
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
EP08871626A
Other languages
German (de)
French (fr)
Other versions
EP2227110B1 (en
Inventor
Jérôme Fabron
Martial Maisonneuve
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.)
SEB SA
Original Assignee
SEB SA
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 SEB SA filed Critical SEB SA
Publication of EP2227110A2 publication Critical patent/EP2227110A2/en
Application granted granted Critical
Publication of EP2227110B1 publication Critical patent/EP2227110B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D26/00—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers
    • A45D26/0023—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers with rotating clamping elements
    • A45D26/0028—Hair-singeing apparatus; Apparatus for removing superfluous hair, e.g. tweezers with rotating clamping elements with rotating discs or blades

Definitions

  • the present invention relates to an epilation head for a tweezers with hand-held pliers for removing unwanted hair from the human body.
  • This type of depilatory device generally comprises blades in the form of blades or discs arranged on a rotating roller, the clamps being caused to close and open periodically so as to tighten the hairs close to the skin to tear them off. by the rotation of the roller and, respectively, to evacuate the torn hairs.
  • Tweezers with tear-off pliers formed of pivotally movable blades cooperating with fixed blades, tongs carried by a rotary cylinder are known, for example from WO 2006/037392.
  • This apparatus requires an actuation of each blade, which makes the complex construction and assembly difficult.
  • the document US 2005/0101971 describes another type of epilator where the tearing pliers are formed by several rows of blades movable in translation abutting against fixed blades vis-à-vis, all movable blades of a row being carried by a peripheral shuttle of a rotary cylinder.
  • Each shuttle comprises lugs which, when driving the shuttle around a central axis, cooperate with a cam having grooves formed on the periphery of a fixed central shaft.
  • the shuttles are arranged around the camshaft, being movable axially along this shaft, while being radially blocked by intermediate connecting elements.
  • the shuttle-carrying shaft is slid along the first radial shuttle-holding connection elements, then the fixed blades are inserted, one by one, onto the first connecting elements, and then slide axially second connecting elements that prevent radial movement of the fixed blades.
  • the assembly thus obtained is then secured by an axial fastening screw.
  • the object of the present invention is to remedy at least in part the aforementioned drawbacks and to provide a depilatory device comprising a hair removal head with pliers simplified structure, while being reliable in operation.
  • Another object of the invention is a depilatory apparatus comprising an epilation head having a reduced number of components and suitable for automated assembly.
  • Another object of the invention is a depilatory device comprising a hair removal head with gripping tongs adapted to reduce the pain felt during tearing, to ensure a constant quality of hair removal throughout its life, while allowing its realization in large numbers at reduced cost.
  • an epilation head for a tweezers with pulling pliers driven by an electric motor having a roller rotatably mounted about its longitudinal axis; this roll comprising at least one row of peripheral pliers, each clamp being formed of at least one movable blade cooperating alternately with a bearing surface vis-à-vis to tighten the hair and then release them, a tubular cage supporting the pulling tongs, coaxial with a central shaft having at least one groove of a cam forming guide path for the movable blade during the rotational movement of the cage with respect to the central shaft and a longitudinal peripheral bar mounted over the row of tear-off pliers and having a window through which the moving blade passes, because said window is delimited on one side by a radial wall forming a bearing surface for the movable blade during its reciprocating movement.
  • the depilating head therefore comprises a rotary roller with peripheral movable blades whose lower part (opposite their niping edge) is caused to traverse an axial cam groove made on a central shaft which causes an axial translational movement of the shaft. -and-comes the movable blade during its rotational movement relative to the central shaft relative to a bearing surface vis-à-vis.
  • the bearing surface facing each other is embodied by the radial wall of the window of a longitudinal peripheral strip which covers a row of movable blades held by a cage coaxial with the central shaft.
  • Radial wall comprises a wall having a surface arranged in a radial plane of the rotating roller.
  • the radial walls of the bar have been dimensioned so that they have, on the one hand, a contact zone with the movable blade of dimensions equivalent to that of this last and, secondly, enough rigidity to cash the force transmitted by the movable blade when it is against the wall to pinch the bristles.
  • the radial walls are made in one piece with the bar to facilitate the realization and especially the assembly of the epilation head.
  • Such a piece may be made of a single plastic material or be a bi-material part, for example the walls forming bearing surfaces may be made of metal, and overmolded with the bar.
  • two movable blades of the same row are connected together at their base which comprises a common pin running through a cam groove.
  • a row may include one or more groups of two moving blades monobloc.
  • such a set of longitudinally connected one-piece movable blades is better guided in its path parallel to the longitudinal axis of the roller in a corresponding guide rail provided in the walls of the cage.
  • a movable blade is arranged inclined with respect to said radial wall.
  • the movable blades are made of sheet metal by cutting, then deformation of the end portions. Moving blades inclined relative to their base have a certain flexibility to deform when they bear against a rigid wall to achieve effective contact of hair catch with it, without cutting the hair.
  • the cam has a movable cam portion which is mounted with a compensating spring within the central shaft.
  • Such elastic means of compensation is provided to exert an axial force on the cam and thus make up play due to manufacturing tolerances, assembly and wear of moving parts, especially at the grooves of the cams.
  • This elastic means allows, in addition, a good pulling of the hairs even using rigid movable blades.
  • the epilation head has several peripheral rows, the blades of each row being offset in the direction of the circumference of the roller.
  • Such blades shifted on the circumference of the roller can shift in the same way the pinch area and thus have fewer active grippers simultaneously, which reduces the pain felt during tearing.
  • the epilation head comprises two cams mounted one in the extension of the other on the central shaft, each cam being provided with at least one groove traversed by the lug of the movable blades.
  • a cam has at least one peripheral sinuous groove which provides axial movement back and forth moving blades traversing this groove.
  • Two cams mounted in the extension of one another and allow to have several clamps working in a wider hair removal area for more efficiency.
  • the grooves of one cam converge towards the grooves of the other cam in the control zone of the closure of the clamps.
  • said bar is made of a plastic material.
  • Such a strip of complex shapes is thus achieved economically by an injection technique of a plastic material.
  • said plastic material is ABS.
  • said radial wall has a thickness of at least 1 mm, in order to have sufficient rigidity to withstand the bearing force of a movable blade which is about 3N.
  • the roll is held by a support having two lateral flanges and which is removably mounted relative to a motor housing.
  • the entire rotating roller is supported on a motor casing by lateral flanges and removable fixing means allowing its replacement by another depilatory or depilatory head (hair cutting, exfoliation, etc.).
  • the object of the invention is also achieved with a depilatory apparatus comprising a housing adapted to be held in the hand and enclosing an electric drive motor and an epilation head according to the invention.
  • FIG. 1 is a perspective view of the rotary roller of an epilation head according to a first embodiment of the invention, a only row of pliers being shown for clarity;
  • FIG. 2 is a longitudinal sectional view taken with a plane passing in the middle of the row of clamps of Figure 1;
  • FIG. 3 is an enlarged side view of the rotating roller with some components removed for clarity;
  • FIG. 4 is an exploded perspective view of the rotary roller of FIG. 1;
  • FIG. 5 is a perspective view of an epilation head according to a second embodiment of the invention, a single row of tearing pliers being shown for clarity;
  • FIG. 6 is a longitudinal sectional view taken with a plane passing in the middle of the row of clamps of Figure 5;
  • FIG. 7 is an exploded perspective view of the depilating head of FIG. 5.
  • FIGS 1 to 4 illustrate a rotary roller 1a of an epilation head according to a first embodiment of the invention.
  • the rotary roller 1a is completed with lateral flanges similar to those (47,48) of Figures 5 to 7 which define in their upper part an epilation window revealing the pulling tongs of the rotary roller 1a.
  • the side flanges are provided with fixing means in the upper part of a motor housing of a tweezer.
  • the motor housing generally comprises a hollow housing made of a plastics material and constructed so as to be hand-held, which housing encloses an electric motor and a gear train which provides rotational movement to the rotating roller 1a of the head hair removal around its longitudinal axis XX.
  • the rotary roller 1a has several rows 2 of tear-off tongs, preferably six rows uniformly distributed over its circumference. For the sake of clarity of the drawings, a single row 2 has been shown in FIGS. 1 to 4.
  • the rows 2 of tear-off pliers comprise moving blades 5 held by a tubular cage 10a, movable blades which cooperate with support vis-à-vis, as will be explained later.
  • the cage 10a has a cylindrical shape therein, the exterior having a generally hexagonal six-sided rectangular shape.
  • Each side 20 is delimited at its edges by vertical partitions 21 parallel each having a recessed rim 22 oriented inwardly of the side 20.
  • a housing 23 for the movable blades 5 is thus defined on each side 20 between the flanges 22 and the base 25 of the side 20.
  • a cutting 24 through is formed in the base 25 of each side 20 allowing the lower part of the movable blades 5 to pass through the cage 10a towards a central shaft 12a.
  • the cage 10a is made of a plastic material, for example ABS, by an injection technique.
  • the cage 10a is integral, on one of its lateral faces, with a pinion 30 and is preferably made in one piece with the latter by the same injection operation.
  • the edges of the cage 10a extend, opposite the pinion 30, by rods 31 intended to each be inserted into a hole 32 of a toothed wheel 33 during assembly of the rotary roller 1a.
  • a movable blade 5 has a cross section T-shaped, as best seen in Figure 3 where we can see the cage 10a with its pinion 30, the central shaft 12a and, in profile, a movable blade 5 put in place on the cage 10a.
  • Two adjacent movable blades 5 belonging to the same row 2 are connected at their base by a spacer 27 forming a one-piece piece 29 of generally U-shaped shape (FIG.
  • the movable blades 5 and the spacer 27 are preferably made by cutting and bending a steel sheet of a thickness of about 0.3 mm.
  • the two movable blades 5 are parallel to each other and inclined at an angle of about 9 ° with respect to a vertical plane perpendicular to the spacer 27, towards the bearing surfaces, as will be explained later. .
  • the longitudinal edges 28 of the spacer 27 are raised in the direction of the upper part of the movable blades 5 and are intended to be inserted in a housing 23 of the cage 10a, being retained by the flanges 22.
  • the base of this part comprises a lug 16 fixed for example by riveting in the center spacer 27 being perpendicular thereto and facing outward.
  • the central shaft 12a has a generally cylindrical shape, the central portion having an outer diameter smaller than the internal one of the cage 10a.
  • the ends 11, of smaller diameter, of the shaft 12a form rotational bearings for the pinion 30 and respectively the toothed wheel 33, the ends 11 being fixedly mounted in the side flanges of the epilation head mounted, they also fixed relative to the housing of the device.
  • the central shaft 12a has a cylindrical cam 15a having a plurality of grooves 14, 14 ', 14 "parallel to each other on its periphery, and each groove 14, 14', 14" has a continuous profile with a closed contour on which zones are observed.
  • the bearing surfaces cooperating with the nip edges of the movable blades 5 are made in one piece with a peripheral bar 17a which caps a side 20 of a row 2 of clamps.
  • a bar 17a is better visible in Figure 4, it comprises a rectangular base 38 having dimensions close to those of a side 20 of the cage 10a.
  • of the windows 18 are made in the base 38 and reveal the pinch edges of the movable blades 5, the number of windows being identical to that of the movable blades 5.
  • Each window 18 is lined with walls extending radially outwardly of the roller rotary, one of the radial walls 7 forming a bearing surface for a movable blade 5 during its reciprocating axial translation movement.
  • the radial wall 7 is made in one piece with the bar 17a by a technique of injection of a plastic material, for example ABS.
  • the radial wall 7 has a thickness calculated to resist without deformation in contact with the adjacent movable blade 5.
  • the thickness of the radial wall 5 is at least 1 mm which allows it to have good rigidity and withstand, without deforming, a force of about 3N applied to it by the movable blade 5.
  • the window 18 further comprises a rib 40 arranged vis-à-vis the radial wall 7 which allows better orientation of the bristles towards the window 18.
  • Spherical pins 41 are fixedly mounted on the bar 17a, their height slightly exceeding the diameter of the roller hair removal at the level of the mobile blades to stimulate the skin and reduce the pain felt during tearing.
  • the base 38 of the bar 17a is extended downwards by two lower edges 42 curved inwardly adapted to be fixed on the flanges 22 on one side 20 of the cage 10a.
  • the assembly of the rotary roller 1a is done by introducing the central shaft 12a inside the cage 10a.
  • the central shaft 12a is a subassembly that has been previously produced by mounting the movable cam 35a and the spring 36 which bears with one of its ends on the bottom wall of a cylindrical housing at the inside the movable cam 35a, the opposite end bearing against a side wall of the shaft 12a (fig.2).
  • a one-piece piece 29 is then inserted into the housing 23 on one side 20 of the cage 10a, exerting a slight pressure to make it pass under the flanges 22.
  • the lug 16 of the movable cam passes through the cutout 24 for s insert into a groove 14 of the cam 15a.
  • the pinion 30 and the toothed wheel 33 receive the rotational movement of the electric motor of the housing and rotate the cage 10a about the longitudinal axis X-X of the fixed central shaft 12a.
  • the cage 10a drives the movable blades 5 which follow the grooves of the cam 15a and move in an alternative translatory movement, their nip edges inclined towards the radial walls 7 abut against them in a linear contact.
  • the tearing pliers formed of a movable blade 5 and a radial wall 7 vis-à-vis are thus closed by gripping the bristles which are then torn off by the rotation of the roller.
  • FIGS 5 to 7 illustrate an epilation head according to a second embodiment of the invention.
  • the depilating head comprises a roller 1b rotatably mounted about its longitudinal axis represented by a central shaft 12b fixedly mounted in two lateral flanges 47, 48.
  • the roller 1b and the flanges 47, 48 are removably mounted in the upper part of the body.
  • a motor housing (not shown in the figures).
  • the roll 1b is made in a manner similar to that 1a of the variant described above, more particularly it has the same diameter as the roll 1a, but is about twice as long and, as a result, has twice as many tongs as the first, it therefore has four tear-off pliers for each row 2.
  • the roll 1b comprises a central shaft 12b having two cams 15a, 15b equidistant while being oriented in mirror with respect to a vertical plane passing through by its center.
  • the cam 15a has grooves identical to those 14, 14 ', 14 "of FIG. 4 made on a fixed part of the central shaft 12b and which extend by zones of slope identical to those 19, 19', 19" of Figure 4 made, they, on a movable cam portion 35a and which are inclined towards the vertical plane passing through the center of the shaft.
  • the cam 15b has grooves made in a manner similar to that of the cam 15a, in particular on a fixed part of the shaft 12b extended by sloping zones formed on a moving cam 35b, but where these are produced in the zone closing the clamps carried by the movable cam 35b so as to converge towards those of the cam 15a in the closing zone of the clamps carried by the cam 35a.
  • the grooves of the cam 15b are arranged at the same distance as the grooves of the cam 15a with respect to a vertical plane passing through the center of the shaft 12b.
  • Each cam 15a, 15b comprises a movable cam 35a, 35b mounted by means of a spring 36 within the central shaft 12b (FIG 6).
  • the cage 10b has the same shapes and radial dimensions as the cage 10a, but is twice as long as the first and has two cutouts 24 on each side 20, each cutout being provided to receive the lug 16 of a single piece 29 connecting together two movable blades 5.
  • Bars 17b come to cap the sides of the cage 10b.
  • a bar 17b is similar to a bar 17a, but is twice as long as a bar 17a of the preceding variant and has four windows 18 revealing the pinch edges of the movable blades 5.
  • the pinch edge of a movable blade 5 cooperates with a radial wall 7 made in one piece with the bar 17b.
  • the assembly of the roll 1b is done in the same way as the assembly of the roll 1a, with the difference that two monoblock pieces 29 are mounted, one in the extension of the other, on each side of the roll.
  • the pinion 30 and the toothed wheel 33 receive the rotational movement of the electric motor of the housing and rotate the cage 10b about the longitudinal axis XX of the fixed central shaft 12b.
  • the cage 10b drives the movable blades 5 which follow the grooves of the cams 15a and 15b and move in an alternative translatory movement parallel to the X-X axis. When closing the clamps, the movable blades move in groups of two towards the center of the rotating roller 1b.
  • the nip edges being inclined towards the radial walls 7, they abut against them in a linear contact.
  • the tearing pliers formed of a movable blade 5 and a radial wall 7 vis-à-vis are thus closed by gripping the bristles which are then torn off by the rotation of the roller.

Landscapes

  • Surgical Instruments (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Brushes (AREA)
  • Food-Manufacturing Devices (AREA)
  • Manipulator (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

The invention relates to a depilation head for a depilation apparatus with tearing clamps driven by an electric motor and including a roller (1a) rotatingly mounted about a longitudinal axis thereof. The roller includes at least one row (2) of peripheral tearing clamps, each clamp including at least one mobile blade (5) interacting alternatively with an opposite bearing surface in order to clamp the hairs and to release them, a tubular cage (10a) carrying the tearing clamps and coaxial with a central shaft (12a) including at least one notch (14) of a cam (5a) defining a guiding path for the mobile blade (5) during the rotation of the cage (10a) relative to the central shaft (12a), and a peripheral longitudinal bar (17a) mounted above the row (2) of tearing clamps and including a window (18) through which the mobile blade (5) extends. According to the invention, said window (18) is defined on one side by a radial wall defining a bearing surface for the mobile blade (5) during the alternating movement thereof.

Description

TÊTE D'EPILATION POUR UN APPAREIL A EPILER A PINCES EPILATION HEAD FOR APPARATUS TO BE PURIFIED
D'ARRACHAGEOn GRUBBING
La présente invention est relative à une tête d'épilation pour un appareil à épiler à pinces d'arrachage susceptible d'être tenu à la main et destiné à éliminer les poils superflus du corps humain.The present invention relates to an epilation head for a tweezers with hand-held pliers for removing unwanted hair from the human body.
Ce type d'appareil à épiler comporte généralement des pinces sous forme de lames ou de disques disposés sur un rouleau rotatif, les pinces étant amenées à se fermer et s'ouvrir périodiquement de manière à serrer les poils à proximité de la peau pour les arracher de par la rotation du rouleau et, respectivement, pour évacuer les poils arrachés.This type of depilatory device generally comprises blades in the form of blades or discs arranged on a rotating roller, the clamps being caused to close and open periodically so as to tighten the hairs close to the skin to tear them off. by the rotation of the roller and, respectively, to evacuate the torn hairs.
Des appareils à épiler à pinces d'arrachage formées de lames mobiles en pivotement coopérant avec des lames fixes, pinces portées par un cylindre rotatif, sont connus, par exemple du document WO 2006/037392. Cet appareil fait toutefois appel à un actionnement de chaque lame, ce qui rend la construction complexe et l'assemblage délicat.Tweezers with tear-off pliers formed of pivotally movable blades cooperating with fixed blades, tongs carried by a rotary cylinder, are known, for example from WO 2006/037392. This apparatus, however, requires an actuation of each blade, which makes the complex construction and assembly difficult.
Le document US 2005/0101971 décrit un autre type d'appareil à épiler où les pinces d'arrachage sont formées par plusieurs rangées de lames mobiles en translation venant en appui contre des lames fixes en vis-à-vis, toutes les lames mobiles d'une rangée étant portées par une navette périphérique d'un cylindre rotatif. Chaque navette comprend des ergots qui, lors de l'entraînement en rotation de la navette autour d'un axe central, coopèrent avec une came comportant des rainures réalisées sur la périphérie d'un arbre central fixe. Les navettes sont disposées autour de l'arbre à came, en étant mobiles axialement le long de cet arbre, tout en étant bloquées radialement par des éléments intermédiaires de liaison. Pour assembler le cylindre rotatif, on fait glisser l'arbre portant les navettes le long des premiers éléments de liaison de maintien radial des navettes, puis on insère les lames fixes, une à une, sur les premiers éléments de liaison, pour ensuite faire glisser axialement des seconds éléments de liaison qui empêchent le mouvement radial des lames fixes. L'ensemble ainsi obtenu est ensuite solidarisé par une fixation axiale à vis. Cet appareil, tout en présentant une structure plus simple que le précédent, fait toutefois appel à de nombreuses pièces, ainsi qu'à des éléments de liaison imbriqués et assemblés par glissement axial, rendant son assemblage laborieux.The document US 2005/0101971 describes another type of epilator where the tearing pliers are formed by several rows of blades movable in translation abutting against fixed blades vis-à-vis, all movable blades of a row being carried by a peripheral shuttle of a rotary cylinder. Each shuttle comprises lugs which, when driving the shuttle around a central axis, cooperate with a cam having grooves formed on the periphery of a fixed central shaft. The shuttles are arranged around the camshaft, being movable axially along this shaft, while being radially blocked by intermediate connecting elements. To assemble the rotary cylinder, the shuttle-carrying shaft is slid along the first radial shuttle-holding connection elements, then the fixed blades are inserted, one by one, onto the first connecting elements, and then slide axially second connecting elements that prevent radial movement of the fixed blades. The assembly thus obtained is then secured by an axial fastening screw. This device, while having a simpler structure than the previous one, however uses many parts, as well as nested connecting elements and assembled by axial sliding, making its assembly laborious.
Une solution améliorée a été proposée dans le document FR 2 858 528 au nom de la demanderesse, où deux lames mobiles d'une rangée sont reliées ensemble par leur base comportant un ergot qui est amené à parcourir une rainure de came pratiquée à la périphérie d'un arbre central fixe. Les lames mobiles d'une rangée sont montées sur une cage périphérique rotative et sont amenées à effectuer un mouvement de translation alternative en se déplaçant axialement contre des lames d'appui en vis-à-vis. Deux lames d'appui voisines sont reliées ensemble et sont supportées avec une possibilité de coulissement dans une fente pratiquée à la base de l'ensemble formé par deux lames mobiles. Deux ensembles de lames mobiles et d'appui sont montés l'un dans le prolongement de l'autre, avec les lames centrales mobiles imbriquées, le tout étant maintenu radialement par une barrette externe. D'assemblage plus simple que l'appareil du document précédent, on s'est rendu compte que l'agencement coulissant des lames d'appui était sujet à des grippages en fonctionnement et que, de par l'enchevêtrement des lames mobiles, il y avait une certaine dissipation de l'effort appliqué au niveau des surfaces de serrage.An improved solution has been proposed in the document FR 2 858 528 in the name of the applicant, where two movable blades of a row are connected together by their base having a pin which is made to traverse a cam groove made at the periphery of the a fixed central tree. The movable blades of a row are mounted on a rotating peripheral cage and are made to perform an alternative translation movement by moving axially against the bearing blades vis-à-vis. Two adjacent support blades are connected together and are supported with a possibility of sliding in a slot at the base of the assembly formed by two movable blades. Two sets of movable blades and support are mounted one in the extension of the other, with the interlocking central movable blades, the whole being held radially by an outer bar. Assembly simpler than the apparatus of the preceding document, it was realized that the sliding arrangement of the support blades was subject to seizures in operation and that, due to the entanglement of the movable blades, there is had some dissipation of the force applied to the clamping surfaces.
Le but de la présente invention est de remédier au moins en partie aux inconvénients précités et de proposer un appareil à épiler comportant une tête d'épilation à pinces d'arrachage de structure simplifiée, tout en étant fiable en fonctionnement.The object of the present invention is to remedy at least in part the aforementioned drawbacks and to provide a depilatory device comprising a hair removal head with pliers simplified structure, while being reliable in operation.
Un autre but de l'invention est un appareil à épiler comportant une tête d'épilation ayant un nombre réduit de composants et se prêtant à un assemblage automatisé. Un autre but de l'invention est un appareil à épiler comportant une tête d'épilation à pinces d'arrachage apte à réduire la douleur ressentie lors de l'arrachage, à assurer une qualité d'épilation constante pour toute sa durée de vie, tout en permettant sa réalisation en grand nombre à coût réduit.Another object of the invention is a depilatory apparatus comprising an epilation head having a reduced number of components and suitable for automated assembly. Another object of the invention is a depilatory device comprising a hair removal head with gripping tongs adapted to reduce the pain felt during tearing, to ensure a constant quality of hair removal throughout its life, while allowing its realization in large numbers at reduced cost.
Ces buts sont atteints avec une tête d'épilation pour un appareil à épiler à pinces d'arrachage entraînées par un moteur électrique comportant un rouleau monté rotatif autour de son axe longitudinal; ce rouleau comportant au moins une rangée de pinces d'arrachage périphériques, chaque pince étant formée d'au moins une lame mobile coopérant alternativement avec une surface d'appui en vis-à-vis pour serrer les poils puis les relâcher, une cage tubulaire supportant les pinces d'arrachage, coaxiale à un arbre central comportant au moins une rainure d'une came formant chemin de guidage pour la lame mobile lors du mouvement de rotation de la cage par rapport à l'arbre central et une barrette périphérique longitudinale montée par dessus la rangée de pinces d'arrachage et comportant une fenêtre traversée par la lame mobile, du fait que ladite fenêtre est délimitée sur un côté par une paroi radiale formant surface d'appui pour la lame mobile lors de son mouvement alternatif.These objects are achieved with an epilation head for a tweezers with pulling pliers driven by an electric motor having a roller rotatably mounted about its longitudinal axis; this roll comprising at least one row of peripheral pliers, each clamp being formed of at least one movable blade cooperating alternately with a bearing surface vis-à-vis to tighten the hair and then release them, a tubular cage supporting the pulling tongs, coaxial with a central shaft having at least one groove of a cam forming guide path for the movable blade during the rotational movement of the cage with respect to the central shaft and a longitudinal peripheral bar mounted over the row of tear-off pliers and having a window through which the moving blade passes, because said window is delimited on one side by a radial wall forming a bearing surface for the movable blade during its reciprocating movement.
La tête d'épilation comporte donc un rouleau rotatif à lames mobiles périphériques dont la partie inférieure (opposée à leur bord de pincement) est amenée à parcourir une rainure de came axiale pratiquée sur un arbre central ce qui provoque un mouvement axial en translation de va-et-vient de la lame mobile lors de son mouvement de rotation relatif à l'arbre central par rapport à une surface d'appui en vis-à-vis.The depilating head therefore comprises a rotary roller with peripheral movable blades whose lower part (opposite their niping edge) is caused to traverse an axial cam groove made on a central shaft which causes an axial translational movement of the shaft. -and-comes the movable blade during its rotational movement relative to the central shaft relative to a bearing surface vis-à-vis.
Selon l'invention, la surface d'appui en vis-à-vis est matérialisée par la paroi radiale de la fenêtre d'une barrette périphérique longitudinale qui coiffe une rangée de lames mobiles tenues par une cage coaxiale à l'arbre central. Par paroi radiale, on comprend une paroi comportant une surface agencée selon un plan radial du rouleau rotatif. Les parois radiales de la barrette ont été dimensionnées de manière à ce qu'elle présentent, d'une part, une zone de contact avec la lame mobile de dimensions équivalentes à celle de cette dernière et, d'autre part, suffisamment de rigidité pour encaisser l'effort transmis par la lame mobile lorsqu'elle s'applique contre la paroi pour pincer les poils. Ainsi, les parois radiales sont réalisées en une pièce monobloc avec la barrette pour faciliter la réalisation et surtout l'assemblage de la tête d'épilation. Une telle pièce monobloc peut être réalisée en une même matière plastique ou être une pièce bi-matières, par exemple les parois formant surfaces d'appui peuvent être réalisées en métal, puis surmoulées avec la barrette.According to the invention, the bearing surface facing each other is embodied by the radial wall of the window of a longitudinal peripheral strip which covers a row of movable blades held by a cage coaxial with the central shaft. Radial wall comprises a wall having a surface arranged in a radial plane of the rotating roller. The radial walls of the bar have been dimensioned so that they have, on the one hand, a contact zone with the movable blade of dimensions equivalent to that of this last and, secondly, enough rigidity to cash the force transmitted by the movable blade when it is against the wall to pinch the bristles. Thus, the radial walls are made in one piece with the bar to facilitate the realization and especially the assembly of the epilation head. Such a piece may be made of a single plastic material or be a bi-material part, for example the walls forming bearing surfaces may be made of metal, and overmolded with the bar.
Toutes les surfaces d'appui d'une rangée étant réalisées en une seule pièce avec la barrette, l'assemblage de la tête d'épilation se trouve grandement simplifié. De surcroît, les lames mobiles d'une rangée étant montées sur la surface extérieure de la cage tubulaire qu'elles traversent jusqu'à ce que leur base vienne coopérer avec la rainure de la came de l'arbre central, l'ensemble d'une rangée de lames est maintenu radialement par une barrette périphérique longitudinale réalisée monobloc avec les lames d'appui et qui vient coiffer l'ensemble en prenant appui sur la cage.Since all the bearing surfaces of a row are made in one piece with the bar, the assembly of the epilation head is greatly simplified. In addition, the movable blades of a row being mounted on the outer surface of the tubular cage they cross until their base comes to cooperate with the groove of the cam of the central shaft, the assembly of a row of blades is held radially by a longitudinal peripheral bar made in one piece with the bearing blades and which caps the assembly by resting on the cage.
De préférence, deux lames mobiles d'une même rangée sont reliées ensemble à leur base qui comporte un ergot commun parcourant une rainure de came.Preferably, two movable blades of the same row are connected together at their base which comprises a common pin running through a cam groove.
Ceci permet de simplifier davantage la construction et le montage de la tête d'épilation, une rangée pouvant comporter un ou plusieurs groupes de deux lames mobiles monobloc. De surcroît, un tel ensemble de lames mobiles monobloc reliées longitudinalement est mieux guidé dans son cheminement parallèlement à l'axe longitudinal du rouleau dans un rail de guidage correspondant prévu dans les parois de la cage.This further simplifies the construction and assembly of the hair removal head, a row may include one or more groups of two moving blades monobloc. In addition, such a set of longitudinally connected one-piece movable blades is better guided in its path parallel to the longitudinal axis of the roller in a corresponding guide rail provided in the walls of the cage.
Avantageusement, une lame mobile est agencée inclinée par rapport à ladite paroi radiale.Advantageously, a movable blade is arranged inclined with respect to said radial wall.
Un tel agencement sous un certain angle par rapport au plan radial du rouleau permet d'avoir un contact linéaire avec la paroi d'appui permettant une meilleure prise du poil. De surcroît, les lames mobiles sont réalisées en une tôle métallique par découpage, puis déformation des parties d'extrémité. Des lames mobiles inclinées par rapport à leur base ont une certaine flexibilité permettant de se déformer lorsqu'elles prennent appui contre une paroi rigide pour réaliser un contact effectif de prise de poil avec celle-ci, sans couper le poil.Such an arrangement at an angle with respect to the radial plane of the roller makes it possible to have a linear contact with the support wall allowing better grip of the pile. In addition, the movable blades are made of sheet metal by cutting, then deformation of the end portions. Moving blades inclined relative to their base have a certain flexibility to deform when they bear against a rigid wall to achieve effective contact of hair catch with it, without cutting the hair.
De préférence, la came comporte une partie formant came mobile qui est montée moyennant un ressort de compensation au sein de l'arbre central.Preferably, the cam has a movable cam portion which is mounted with a compensating spring within the central shaft.
Un tel moyen élastique de compensation est prévu pour exercer une force axiale sur la came et ainsi rattraper les jeux dus aux tolérances de fabrication, au montage et à l'usure des pièces en mouvement, notamment au niveau des rainures des cames. Ce moyen élastique permet, de surcroît, un bon arrachage des poils même en utilisant des lames mobiles rigides.Such elastic means of compensation is provided to exert an axial force on the cam and thus make up play due to manufacturing tolerances, assembly and wear of moving parts, especially at the grooves of the cams. This elastic means allows, in addition, a good pulling of the hairs even using rigid movable blades.
Avantageusement, la tête d'épilation comporte plusieurs rangées périphériques, les lames de chaque rangée étant décalées en direction de la circonférence du rouleau.Advantageously, the epilation head has several peripheral rows, the blades of each row being offset in the direction of the circumference of the roller.
De telles lames décalées sur la circonférence du rouleau permettent de décaler de la même manière la zone de pincement et avoir ainsi moins de pinces actives simultanément, ce qui permet de diminuer la douleur ressentie lors de l'arrachage.Such blades shifted on the circumference of the roller can shift in the same way the pinch area and thus have fewer active grippers simultaneously, which reduces the pain felt during tearing.
De préférence, la tête d'épilation comporte deux cames montées l'une dans le prolongement de l'autre sur l'arbre central, chaque came étant munie d'au moins une rainure parcourue par l'ergot des lames mobiles.Preferably, the epilation head comprises two cams mounted one in the extension of the other on the central shaft, each cam being provided with at least one groove traversed by the lug of the movable blades.
Une came présente au moins une rainure sinueuse périphérique qui assure le mouvement axial de va-et-vient des lames mobiles parcourant cette rainure. Deux cames montées dans le prolongement l'une de l'autre permettent ainsi d'avoir plusieurs pinces travaillant dans une zone d'épilation plus large pour plus d'efficacité. Avantageusement, les rainures d'une came convergent vers les rainures de l'autre came dans la zone de commande de la fermeture des pinces.A cam has at least one peripheral sinuous groove which provides axial movement back and forth moving blades traversing this groove. Two cams mounted in the extension of one another and allow to have several clamps working in a wider hair removal area for more efficiency. Advantageously, the grooves of one cam converge towards the grooves of the other cam in the control zone of the closure of the clamps.
Ceci permet d'obtenir une fermeture simultanée des lames d'une rangée commandées par deux cames différentes dont l'effort appliqué est équilibré au sein de l'ensemble formant tête d'épilation.This makes it possible to obtain simultaneous closure of the blades of a row controlled by two different cams whose applied force is balanced within the head assembly epilation.
De préférence, ladite barrette est réalisée en une matière plastique.Preferably, said bar is made of a plastic material.
Une telle barrette à formes complexes est ainsi réalisée de manière économique par une technique d'injection en une matière plastique.Such a strip of complex shapes is thus achieved economically by an injection technique of a plastic material.
Avantageusement, ladite matière plastique est de l'ABS.Advantageously, said plastic material is ABS.
De préférence, ladite paroi radiale a une épaisseur d'au moins 1 mm, afin d'avoir suffisamment de rigidité pour supporter la force d'appui d'une lame mobile qui est d'environ 3N.Preferably, said radial wall has a thickness of at least 1 mm, in order to have sufficient rigidity to withstand the bearing force of a movable blade which is about 3N.
Avantageusement, le rouleau est tenu par un support comportant deux flasques latéraux et qui est monté amovible par rapport à un boîtier moteur.Advantageously, the roll is held by a support having two lateral flanges and which is removably mounted relative to a motor housing.
L'ensemble du rouleau rotatif est supporté sur un boîtier moteur par des flasques latéraux et des moyens de fixation amovible permettant son remplacement par une autre tête d'épilation ou de dépilation (coupe des poils, exfoliation, etc.).The entire rotating roller is supported on a motor casing by lateral flanges and removable fixing means allowing its replacement by another depilatory or depilatory head (hair cutting, exfoliation, etc.).
L'objet de l'invention est également atteint avec un appareil à épiler comportant un boîtier prévu pour être tenu à la main et renfermant un moteur électrique d'entraînement et une tête d'épilation selon l'invention.The object of the invention is also achieved with a depilatory apparatus comprising a housing adapted to be held in the hand and enclosing an electric drive motor and an epilation head according to the invention.
L'invention sera mieux comprise à l'étude des modes de réalisation pris à titre nullement limitatif et illustrés dans les figures annexées dans lesquelles :The invention will be better understood with the study of the embodiments taken in no way limiting and illustrated in the accompanying figures in which:
- la figure 1 est une vue en perspective du rouleau rotatif d'une tête d'épilation selon une première variante de réalisation de l'invention, une seule rangée de pinces d'arrachage étant représentée pour plus de clarté ;FIG. 1 is a perspective view of the rotary roller of an epilation head according to a first embodiment of the invention, a only row of pliers being shown for clarity;
- la figure 2 est une vue en coupe longitudinale effectuée avec un plan passant au milieu de la rangée de pinces de la figure 1 ; - la figure 3 est une vue de côté à échelle agrandie du rouleau rotatif, certains composants étant retirés pour plus de clarté ;- Figure 2 is a longitudinal sectional view taken with a plane passing in the middle of the row of clamps of Figure 1; FIG. 3 is an enlarged side view of the rotating roller with some components removed for clarity;
- la figure 4 est une vue en perspective éclatée du rouleau rotatif de la figure 1 ;FIG. 4 is an exploded perspective view of the rotary roller of FIG. 1;
- la figure 5 est une vue en perspective d'une tête d'épilation selon une deuxième variante de réalisation de l'invention, une seule rangée de pinces d'arrachage étant représentée pour plus de clarté ;- Figure 5 is a perspective view of an epilation head according to a second embodiment of the invention, a single row of tearing pliers being shown for clarity;
- la figure 6 est une vue en coupe longitudinale effectuée avec un plan passant au milieu de la rangée de pinces de la figure 5 ;- Figure 6 is a longitudinal sectional view taken with a plane passing in the middle of the row of clamps of Figure 5;
- la figure 7 est une vue en perspective éclatée de la tête d'épilation de la figure 5.FIG. 7 is an exploded perspective view of the depilating head of FIG. 5.
Seuls les éléments nécessaires à la compréhension de l'invention ont été représentés. Pour faciliter la lecture des dessins, les mêmes éléments portent les mêmes références d'une figure à l'autre.Only the elements necessary for the understanding of the invention have been represented. To facilitate the reading of the drawings, the same elements bear the same references from one figure to another.
Les figures 1 à 4 illustrent un rouleau rotatif 1a d'une tête d'épilation selon une première variante de réalisation de l'invention. Le rouleau rotatif 1 a est complété de flasques latéraux similaires à ceux (47,48) des figures 5 à 7 qui définissent en leur partie supérieure une fenêtre d'épilation laissant apparaître les pinces d'arrachage du rouleau rotatif 1a. Les flasques latéraux sont munis de moyens de fixation en la partie supérieure d'un boîtier moteur d'un appareil à épiler. Le boîtier moteur comprend généralement un boîtier creux réalisé en une matière plastique et réalisé de manière à pouvoir être tenu à la main, boîtier qui renferme un moteur électrique et un train d'engrenages qui fournit le mouvement de rotation au rouleau rotatif 1a de la tête d'épilation autour de son axe longitudinal X-X.Figures 1 to 4 illustrate a rotary roller 1a of an epilation head according to a first embodiment of the invention. The rotary roller 1a is completed with lateral flanges similar to those (47,48) of Figures 5 to 7 which define in their upper part an epilation window revealing the pulling tongs of the rotary roller 1a. The side flanges are provided with fixing means in the upper part of a motor housing of a tweezer. The motor housing generally comprises a hollow housing made of a plastics material and constructed so as to be hand-held, which housing encloses an electric motor and a gear train which provides rotational movement to the rotating roller 1a of the head hair removal around its longitudinal axis XX.
Le rouleau rotatif 1a comporte plusieurs rangées 2 de pinces d'arrachage, de préférence six rangées uniformément réparties sur sa circonférence. Pour des raisons de clarté des dessins, une seule rangée 2 a été représentée sur les figures 1 à 4. Les rangées 2 de pinces d'arrachage comportent des lames mobiles 5 tenues par une cage 10a tubulaire, lames mobiles qui coopèrent avec des surfaces d'appui en vis-à-vis, tel qu'il sera expliqué par la suite.The rotary roller 1a has several rows 2 of tear-off tongs, preferably six rows uniformly distributed over its circumference. For the sake of clarity of the drawings, a single row 2 has been shown in FIGS. 1 to 4. The rows 2 of tear-off pliers comprise moving blades 5 held by a tubular cage 10a, movable blades which cooperate with support vis-à-vis, as will be explained later.
Tel que mieux visible aux figures 3 et 4, la cage 10a présente une forme cylindrique à l'intérieur, l'extérieur ayant une forme générale de prisme hexagonal à six côtés 20 rectangulaires. Chaque côté 20 est délimité au niveau de ses arêtes par des cloisons verticales 21 parallèles ayant chacune un rebord 22 rentrant orienté vers l'intérieur du côté 20. Un logement 23 pour les lames mobiles 5 est ainsi défini sur chaque côté 20, entre les rebords 22 et la base 25 du côté 20. Un découpage 24 traversant est réalisé dans la base 25 de chaque côté 20 permettant à la partie inférieure des lames mobiles 5 de traverser la cage 10a en direction d'un arbre central 12a. La cage 10a est réalisée en une matière plastique, par exemple de l'ABS, par une technique d'injection. La cage 10a est solidaire, sur l'une de ses faces latérales, d'un pignon 30 et est de préférence réalisée en une seule pièce avec ce dernier par la même opération d'injection. Les arrêtes de la cage 10a se prolongent, à l'opposé du pignon 30, par des tiges 31 destinées à s'insérer chacune dans un orifice 32 d'une roue dentée 33 lors de l'assemblage du rouleau rotatif 1 a.As best seen in Figures 3 and 4, the cage 10a has a cylindrical shape therein, the exterior having a generally hexagonal six-sided rectangular shape. Each side 20 is delimited at its edges by vertical partitions 21 parallel each having a recessed rim 22 oriented inwardly of the side 20. A housing 23 for the movable blades 5 is thus defined on each side 20 between the flanges 22 and the base 25 of the side 20. A cutting 24 through is formed in the base 25 of each side 20 allowing the lower part of the movable blades 5 to pass through the cage 10a towards a central shaft 12a. The cage 10a is made of a plastic material, for example ABS, by an injection technique. The cage 10a is integral, on one of its lateral faces, with a pinion 30 and is preferably made in one piece with the latter by the same injection operation. The edges of the cage 10a extend, opposite the pinion 30, by rods 31 intended to each be inserted into a hole 32 of a toothed wheel 33 during assembly of the rotary roller 1a.
Une lame mobile 5 présente une section transversale en forme de T, tel que mieux visible à la figure 3 où l'on peut voir la cage 10a avec son pignon 30, l'arbre central 12a et, de profil, une lame mobile 5 mise en place sur la cage 10a. Deux lames mobiles 5 voisines appartenant à une même rangée 2 sont reliées à leur base par une entretoise 27 formant une pièce monobloc 29 de forme générale en U (fig. 4). Les lames mobiles 5 et l'entretoise 27 sont de préférence réalisées par découpage et pliage d'une tôle en acier d'une épaisseur d'environ 0.3mm. Les deux lames mobiles 5 sont parallèles entre elles et inclinées d'un angle d'environ 9° par rapport à un plan vertical perpendiculaire à l'entretoise 27, en direction des surfaces d'appui, tel qu'il sera expliqué par la suite. Les bords longitudinaux 28 de l'entretoise 27 sont relevés en direction de la partie supérieure des lames mobiles 5 et sont destinés à s'insérer dans un logement 23 de la cage 10a, en étant retenus par les rebords 22. La base de cette pièce comporte un ergot 16 fixé par exemple par rivetage au centre de l'entretoise 27 en étant perpendiculaire à celle-ci et orienté vers l'extérieur. Lorsque la pièce monobloc 29 est montée sur un côté 20 de la cage 10a, l'ergot 16 traverse le découpage 24 de la base 25 de celui-ci en direction de l'arbre central 12a.A movable blade 5 has a cross section T-shaped, as best seen in Figure 3 where we can see the cage 10a with its pinion 30, the central shaft 12a and, in profile, a movable blade 5 put in place on the cage 10a. Two adjacent movable blades 5 belonging to the same row 2 are connected at their base by a spacer 27 forming a one-piece piece 29 of generally U-shaped shape (FIG. The movable blades 5 and the spacer 27 are preferably made by cutting and bending a steel sheet of a thickness of about 0.3 mm. The two movable blades 5 are parallel to each other and inclined at an angle of about 9 ° with respect to a vertical plane perpendicular to the spacer 27, towards the bearing surfaces, as will be explained later. . The longitudinal edges 28 of the spacer 27 are raised in the direction of the upper part of the movable blades 5 and are intended to be inserted in a housing 23 of the cage 10a, being retained by the flanges 22. The base of this part comprises a lug 16 fixed for example by riveting in the center spacer 27 being perpendicular thereto and facing outward. When the one-piece piece 29 is mounted on a side 20 of the cage 10a, the lug 16 passes through the cutout 24 of the base 25 thereof towards the central shaft 12a.
L'arbre central 12a a une forme générale cylindrique, la partie centrale ayant un diamètre externe inférieur à celui interne de la cage 10a. Les extrémités 11 , de plus faible diamètre, de l'arbre 12a forment paliers de rotation pour le pignon 30 et respectivement la roue dentée 33, les extrémités 11 étant montées fixes dans les flasques latéraux de la tête d'épilation montés, eux, également fixes par rapport au boîtier de l'appareil. L'arbre central 12a comporte une came 15a cylindrique présentant plusieurs rainures 14, 14', 14" parallèles entre elles pratiquées sur sa périphérie. Chaque rainure 14, 14', 14" présente un profil continu à contour fermé sur lequel on observe des zones en pente 19,19', 19" (fig.4) qui guident les lames mobiles en direction de surfaces d'appui en vis-à- vis pour réaliser la fermeture des pinces d'arrachage. Les zones en pente 19,19', 19" sont réalisées sur une pièce à part formant une came mobile 35a montée sur l'arbre central 12a à possibilité de coulissement axial à rencontre d'un ressort de rappel 36. Cette construction est mieux décrite dans le document FR 2 858 528 de la demanderesse. Le ressort de rappel 36 permet ainsi de rattraper le jeu de fonctionnement et l'usure des rainures de came pour assurer toujours un effort constant des lames mobiles contre leurs surfaces d'appui en vis-à-vis et de ce fait un arrachage efficace des poils qu'elles enserrent.The central shaft 12a has a generally cylindrical shape, the central portion having an outer diameter smaller than the internal one of the cage 10a. The ends 11, of smaller diameter, of the shaft 12a form rotational bearings for the pinion 30 and respectively the toothed wheel 33, the ends 11 being fixedly mounted in the side flanges of the epilation head mounted, they also fixed relative to the housing of the device. The central shaft 12a has a cylindrical cam 15a having a plurality of grooves 14, 14 ', 14 "parallel to each other on its periphery, and each groove 14, 14', 14" has a continuous profile with a closed contour on which zones are observed. sloping 19,19 ', 19 "(fig.4) which guide the movable blades in the direction of bearing surfaces vis-à-vis to achieve the closure of the pulling tongs Sloping areas 19,19' , 19 "are formed on a separate part forming a movable cam 35a mounted on the central shaft 12a with the possibility of axial sliding against a return spring 36. This construction is better described in the document FR 2 858 528 of the plaintiff. The return spring 36 thus makes it possible to compensate for the operating clearance and the wear of the cam grooves in order to always ensure a constant force of the movable blades against their support surfaces facing each other and thus an effective tearing of the cams. hairs that they enclose.
Selon l'invention, les surfaces d'appui coopérant avec les bords de pincement des lames mobiles 5 sont réalisées en une seule pièce avec une barrette 17a périphérique qui vient coiffer un côté 20 d'une rangée 2 de pinces. Une barrette 17a est mieux visible à la figure 4, elle comporte une base 38 rectangulaire ayant des dimensions proches de celles d'un côté 20 de la cage 10a. Des fenêtres 18 sont pratiquées dans la base 38 et laissent apparaître les bords de pincement des lames mobiles 5, le nombre des fenêtres étant identique à celui des lames mobiles 5. Chaque fenêtre 18 est bordée de parois s'étendant radialement vers l'extérieur du rouleau rotatif, l'une des parois radiales 7 formant surface d'appui pour une lame mobile 5 lors de son mouvement alternatif de translation axiale. La paroi radiale 7 est réalisée en une seule pièce avec la barrette 17a par une technique d'injection d'une matière plastique, par exemple de l'ABS. La paroi radiale 7 présente une épaisseur calculée pour résister sans se déformer au contact avec la lame mobile 5 adjacente. L'épaisseur de la paroi radiale 5 est de minimum 1 mm ce qui lui permet d'avoir une bonne rigidité et de supporter, sans se déformer, une force d'environ 3N qui lui est appliquée par la lame mobile 5. La fenêtre 18 comporte par ailleurs une nervure 40 agencée en vis-à-vis de la paroi radiale 7 qui permet de mieux orienter les poils vers la fenêtre 18. Des picots sphériques 41 sont montés fixes sur la barrette 17a, leur hauteur dépassant légèrement le diamètre du rouleau d'épilation au niveau des lames mobiles afin de stimuler la peau et diminuer la douleur ressentie lors de l'arrachage. La base 38 de la barrette 17a se prolonge vers le bas par deux bords inférieurs 42 recourbés vers l'intérieur prévus pour se fixer sur les rebords 22 d'un côté 20 de la cage 10a.According to the invention, the bearing surfaces cooperating with the nip edges of the movable blades 5 are made in one piece with a peripheral bar 17a which caps a side 20 of a row 2 of clamps. A bar 17a is better visible in Figure 4, it comprises a rectangular base 38 having dimensions close to those of a side 20 of the cage 10a. of the windows 18 are made in the base 38 and reveal the pinch edges of the movable blades 5, the number of windows being identical to that of the movable blades 5. Each window 18 is lined with walls extending radially outwardly of the roller rotary, one of the radial walls 7 forming a bearing surface for a movable blade 5 during its reciprocating axial translation movement. The radial wall 7 is made in one piece with the bar 17a by a technique of injection of a plastic material, for example ABS. The radial wall 7 has a thickness calculated to resist without deformation in contact with the adjacent movable blade 5. The thickness of the radial wall 5 is at least 1 mm which allows it to have good rigidity and withstand, without deforming, a force of about 3N applied to it by the movable blade 5. The window 18 further comprises a rib 40 arranged vis-à-vis the radial wall 7 which allows better orientation of the bristles towards the window 18. Spherical pins 41 are fixedly mounted on the bar 17a, their height slightly exceeding the diameter of the roller hair removal at the level of the mobile blades to stimulate the skin and reduce the pain felt during tearing. The base 38 of the bar 17a is extended downwards by two lower edges 42 curved inwardly adapted to be fixed on the flanges 22 on one side 20 of the cage 10a.
L'assemblage du rouleau rotatif 1a se fait en introduisant l'arbre central 12a à l'intérieur de la cage 10a. L'arbre central 12a est un sous-ensemble qui a été préalablement réalisé par le montage de la came mobile 35a et du ressort 36 qui prend appui avec l'une de ses extrémités sur la paroi de fond d'un logement cylindrique à l'intérieur de la came mobile 35a, l'extrémité opposée prenant appui contre une paroi latérale de l'arbre 12a (fig.2). Une pièce monobloc 29 est ensuite introduite dans le logement 23 d'un côté 20 de la cage 10a, en exerçant une légère pression pour la faire passer en dessous des rebords 22. L'ergot 16 de la came mobile traverse le découpage 24 pour s'insérer dans une rainure 14 de la came 15a. Cette opération est ensuite répétée pour monter une deuxième pièce monobloc 29 dans le logement d'un côté voisin de la cage 10a, son ergot traversant un découpage 24' pour venir s'insérer dans une rainure 14' voisine. Tel que mieux visible à la figure 4, les découpages 24,24' et les suivants (non visibles) sont décalés axialement sur la circonférence de la cage 10a afin de permettre une orientation rapide en vue du montage des lames mobiles 5 décalées axialement sur la circonférence du rouleau rotatif 1a. Lorsque toutes les lames mobiles ont été montées sur les six côtés de la cage 10a, on vient insérer de force les barrettes 17a sur la périphérie de la cage, les bords inférieurs 42 d'une barrette 17a venant se fixer sur les rebords 22 d'un côté 20 de la cage 10a. On finit l'assemblage du rouleau rotatif 1a par le montage de la roue dentée 33 à l'extrémité des tiges 31 de la cage 10a.The assembly of the rotary roller 1a is done by introducing the central shaft 12a inside the cage 10a. The central shaft 12a is a subassembly that has been previously produced by mounting the movable cam 35a and the spring 36 which bears with one of its ends on the bottom wall of a cylindrical housing at the inside the movable cam 35a, the opposite end bearing against a side wall of the shaft 12a (fig.2). A one-piece piece 29 is then inserted into the housing 23 on one side 20 of the cage 10a, exerting a slight pressure to make it pass under the flanges 22. The lug 16 of the movable cam passes through the cutout 24 for s insert into a groove 14 of the cam 15a. This operation is then repeated to mount a second one-piece piece 29 in the housing on a side adjacent to the cage 10a, its lug passing through a cutout 24 'to be inserted into a groove 14 'neighbor. As best seen in FIG. 4, the cuts 24, 24 'and the following ones (not visible) are offset axially on the circumference of the cage 10 a in order to allow a rapid orientation with a view to mounting the movable blades 5 axially offset on the circumference of the rotating roller 1a. When all the movable blades have been mounted on the six sides of the cage 10a, the bars 17a are forcibly inserted on the periphery of the cage, the lower edges 42 of a bar 17a being fixed on the flanges 22 of FIG. one side 20 of the cage 10a. The assembly of the rotary roller 1a is completed by mounting the toothed wheel 33 at the end of the rods 31 of the cage 10a.
En fonctionnement, le pignon 30 et la roue dentée 33 reçoivent le mouvement de rotation du moteur électrique du boîtier et font tourner la cage 10a autour de l'axe longitudinal X-X de l'arbre central 12a monté fixe. La cage 10a entraîne les lames mobiles 5 qui suivent les rainures de la came 15a et se déplacent en un mouvement de translation alternative, leurs bords de pincement inclinés en direction des parois radiales 7 viennent en appui contre celles-ci suivant un contact linéaire. Les pinces d'arrachage formées d'une lame mobile 5 et d'une paroi radiale 7 en vis-à-vis sont ainsi fermées en enserrant les poils qui sont ensuite arrachés de par la rotation du rouleau.In operation, the pinion 30 and the toothed wheel 33 receive the rotational movement of the electric motor of the housing and rotate the cage 10a about the longitudinal axis X-X of the fixed central shaft 12a. The cage 10a drives the movable blades 5 which follow the grooves of the cam 15a and move in an alternative translatory movement, their nip edges inclined towards the radial walls 7 abut against them in a linear contact. The tearing pliers formed of a movable blade 5 and a radial wall 7 vis-à-vis are thus closed by gripping the bristles which are then torn off by the rotation of the roller.
Les figures 5 à 7 illustrent une tête d'épilation selon une deuxième variante de réalisation de l'invention. La tête d'épilation comprend un rouleau 1b monté rotatif autour de son axe longitudinal matérialisé par un arbre central 12b monté fixe dans deux flasques latéraux 47, 48. Le rouleau 1 b et les flasques 47,48 sont montés amovibles en la partie supérieure d'un boîtier moteur (non représenté sur les figures). Le rouleau 1 b est réalisé de manière similaire à celui 1a de la variante précédemment décrite, plus particulièrement il a un même diamètre que le rouleau 1a, mais est environ deux fois plus long et, de ce fait comporte deux fois plus de pinces que le premier, il comporte donc quatre pinces d'arrachage pour chaque rangée 2.Figures 5 to 7 illustrate an epilation head according to a second embodiment of the invention. The depilating head comprises a roller 1b rotatably mounted about its longitudinal axis represented by a central shaft 12b fixedly mounted in two lateral flanges 47, 48. The roller 1b and the flanges 47, 48 are removably mounted in the upper part of the body. a motor housing (not shown in the figures). The roll 1b is made in a manner similar to that 1a of the variant described above, more particularly it has the same diameter as the roll 1a, but is about twice as long and, as a result, has twice as many tongs as the first, it therefore has four tear-off pliers for each row 2.
Le rouleau 1b comporte un arbre central 12b comportant deux cames 15a, 15b équidistantes en étant orientées en miroir par rapport à un plan vertical passant par son centre. La came 15a comporte des rainures identiques à celles 14,14', 14" de la figure 4 réalisées sur une partie fixe de l'arbre central 12b et qui se prolongent par des zones en pente identiques à celles 19, 19', 19" de la figure 4 réalisées, elles, sur une partie formant came mobile 35a et qui sont inclinées en direction du plan vertical passant par le centre de l'arbre. La came 15b comporte des rainures réalisées de manière similaire à celles de la came 15a, notamment sur une partie fixe de l'arbre 12b prolongées par des zones en pente réalisées sur une came mobile 35b, mais où, ces dernières sont réalisées dans la zone de fermeture des pinces portées par la came mobile 35b de manière à converger vers celles de la came 15a dans la zone de fermeture des pinces portées par la came 35a. Les rainures de la came 15b sont agencées à une même distance que les rainures de la came 15a par rapport à un plan vertical passant par le centre de l'arbre 12b. Chaque came 15a, 15b comporte une came mobile 35a, 35b montée moyennant un ressort 36 au sein de l'arbre central 12b (f ig. 6).The roll 1b comprises a central shaft 12b having two cams 15a, 15b equidistant while being oriented in mirror with respect to a vertical plane passing through by its center. The cam 15a has grooves identical to those 14, 14 ', 14 "of FIG. 4 made on a fixed part of the central shaft 12b and which extend by zones of slope identical to those 19, 19', 19" of Figure 4 made, they, on a movable cam portion 35a and which are inclined towards the vertical plane passing through the center of the shaft. The cam 15b has grooves made in a manner similar to that of the cam 15a, in particular on a fixed part of the shaft 12b extended by sloping zones formed on a moving cam 35b, but where these are produced in the zone closing the clamps carried by the movable cam 35b so as to converge towards those of the cam 15a in the closing zone of the clamps carried by the cam 35a. The grooves of the cam 15b are arranged at the same distance as the grooves of the cam 15a with respect to a vertical plane passing through the center of the shaft 12b. Each cam 15a, 15b comprises a movable cam 35a, 35b mounted by means of a spring 36 within the central shaft 12b (FIG 6).
La cage 10b a les mêmes formes et dimensions radiales que la cage 10a, mais est deux fois plus longue que la première et comporte deux découpages 24 sur chaque côté 20, chaque découpage étant prévu pour recevoir l'ergot 16 d'une pièce monobloc 29 reliant ensemble deux lames mobiles 5.The cage 10b has the same shapes and radial dimensions as the cage 10a, but is twice as long as the first and has two cutouts 24 on each side 20, each cutout being provided to receive the lug 16 of a single piece 29 connecting together two movable blades 5.
Des barrettes 17b viennent coiffer les côtés de la cage 10b. Une barrette 17b est similaire à une barrette 17a, mais est deux fois plus longue qu'une barrette 17a de la variante précédente et comporte quatre fenêtres 18 laissant apparaître les bords de pincement des lames mobiles 5. Le bord de pincement d'une lame mobile 5 coopère avec une paroi radiale 7 réalisée en une seule pièce avec la barrette 17b.Bars 17b come to cap the sides of the cage 10b. A bar 17b is similar to a bar 17a, but is twice as long as a bar 17a of the preceding variant and has four windows 18 revealing the pinch edges of the movable blades 5. The pinch edge of a movable blade 5 cooperates with a radial wall 7 made in one piece with the bar 17b.
L'assemblage du rouleau 1 b se fait de la même manière que l'assemblage du rouleau 1 a, à la différence que l'on monte deux pièces monobloc 29, l'une dans le prolongement de l'autre, sur chaque côté de la cage 10b et que l'on coiffe ensuite avec une barrette 17b. En fonctionnement, le pignon 30 et la roue dentée 33 reçoivent le mouvement de rotation du moteur électrique du boîtier et font tourner la cage 10b autour de l'axe longitudinal X-X de l'arbre central 12b monté fixe. La cage 10b entraîne les lames mobiles 5 qui suivent les rainures des cames 15a et 15b et se déplacent en un mouvement de translation alternative parallèlement à l'axe X- X. Lors de la fermeture des pinces, les lames mobiles se déplacent par groupe de deux vers le centre du rouleau rotatif 1 b. Les bords de pincement étant inclinés en direction des parois radiales 7, ils viennent en appui contre celles-ci suivant un contact linéaire. Les pinces d'arrachage formées d'une lame mobile 5 et d'une paroi radiale 7 en vis-à-vis sont ainsi fermées en enserrant les poils qui sont ensuite arrachés de par la rotation du rouleau.The assembly of the roll 1b is done in the same way as the assembly of the roll 1a, with the difference that two monoblock pieces 29 are mounted, one in the extension of the other, on each side of the roll. the cage 10b and which is then covered with a bar 17b. In operation, the pinion 30 and the toothed wheel 33 receive the rotational movement of the electric motor of the housing and rotate the cage 10b about the longitudinal axis XX of the fixed central shaft 12b. The cage 10b drives the movable blades 5 which follow the grooves of the cams 15a and 15b and move in an alternative translatory movement parallel to the X-X axis. When closing the clamps, the movable blades move in groups of two towards the center of the rotating roller 1b. The nip edges being inclined towards the radial walls 7, they abut against them in a linear contact. The tearing pliers formed of a movable blade 5 and a radial wall 7 vis-à-vis are thus closed by gripping the bristles which are then torn off by the rotation of the roller.
Bien entendu, l'invention n'est nullement limitée au mode de réalisation décrit et illustré qui n'a été donné qu'à titre d'exemple. Des modifications restent possibles, notamment du point de vue de la constitution des divers éléments ou par substitution d'équivalents techniques, sans sortir pour autant du domaine de protection de l'invention. Of course, the invention is not limited to the embodiment described and illustrated which has been given by way of example. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

REVENDICATIONS
1. Tête d'épilation pour un appareil à épiler à pinces d'arrachage entraînées par un moteur électrique comportant un rouleau (1a, 1b) monté rotatif autour de son axe longitudinal; ce rouleau comportant au moins une rangée (2) de pinces d'arrachage périphériques, chaque pince étant formée d'au moins une lame mobile (5) coopérant alternativement avec une surface d'appui en vis-à-vis pour serrer les poils puis les relâcher, une cage (10a, 10b) tubulaire supportant les pinces d'arrachage, coaxiale à un arbre central (12a,12b) comportant au moins une rainure (14) d'une came (15a, 15b) formant chemin de guidage pour la lame mobile (5) lors du mouvement de rotation de la cage (10a, 10b) par rapport à l'arbre central (12a, 12b) et une barrette (17a, 17b) périphérique longitudinale montée par dessus la rangée (2) de pinces d'arrachage et comportant une fenêtre (18) traversée par la lame mobile (5), caractérisée en ce que ladite fenêtre (18) est délimitée sur un côté par une paroi radiale (7) formant surface d'appui pour la lame mobile (5) lors de son mouvement alternatif.An epilation head for a tweezers with electric motor-driven pulling pliers comprising a roller (1a, 1b) rotatably mounted about its longitudinal axis; this roller comprising at least one row (2) of peripheral pliers, each clamp being formed of at least one movable blade (5) cooperating alternately with a bearing surface vis-à-vis to tighten the hairs then releasing them, a tubular cage (10a, 10b) supporting the pulling tongs, coaxial with a central shaft (12a, 12b) having at least one groove (14) of a cam (15a, 15b) forming a guide path for the movable blade (5) during the rotational movement of the cage (10a, 10b) with respect to the central shaft (12a, 12b) and a longitudinal peripheral bar (17a, 17b) mounted over the row (2) of pulling tongs and having a window (18) traversed by the movable blade (5), characterized in that said window (18) is delimited on one side by a radial wall (7) forming a bearing surface for the movable blade (5) during its reciprocating motion.
2. Tête d'épilation selon la revendication 1 , caractérisée en ce que deux lames mobiles (5) d'une même rangée sont reliées ensemble à leur base qui comporte un ergot (16) commun parcourant une rainure (14) de came (15a,15b).2. epilation head according to claim 1, characterized in that two movable blades (5) of the same row are connected together at their base which comprises a common pin (16) running through a groove (14) cam (15a , 15b).
3. Tête d'épilation selon l'une des revendications 1 ou 2, caractérisée en ce qu'une lame mobile (5) est agencée inclinée par rapport à ladite paroi radiale (7).3. epilation head according to one of claims 1 or 2, characterized in that a movable blade (5) is arranged inclined relative to said radial wall (7).
4. Tête d'épilation selon l'une des revendications précédentes, caractérisée en ce que la came (15a, 15b) comporte une partie formant came mobile (35a,35b) qui est montée moyennant un ressort de compensation (36) au sein de l'arbre central (12a,12b). 4. depilatory head according to one of the preceding claims, characterized in that the cam (15a, 15b) comprises a movable cam portion (35a, 35b) which is mounted with a compensating spring (36) within the central shaft (12a, 12b).
5. Tête d'épilation selon l'une des revendications précédentes, caractérisée en ce qu'elle comporte plusieurs rangées (2) périphériques, les lames de chaque rangée étant décalées en direction de la circonférence du rouleau (1a,1b).5. epilation head according to one of the preceding claims, characterized in that it comprises several rows (2) peripherals, the blades of each row being offset in the direction of the circumference of the roller (1a, 1b).
6. Tête d'épilation selon l'une des revendications précédentes, caractérisée en ce qu'elle comporte deux cames (15a, 15b) montées l'une dans le prolongement de l'autre sur l'arbre central (12b), chaque came étant munie d'au moins une rainure parcourue par l'ergot des lames mobiles.6. epilation head according to one of the preceding claims, characterized in that it comprises two cams (15a, 15b) mounted one in the extension of the other on the central shaft (12b), each cam being provided with at least one groove traversed by the lug of the movable blades.
7. Tête d'épilation selon la revendication 6, caractérisée en ce que les rainures d'une came (15a) convergent vers les rainures de l'autre came (15b) dans la zone de commande de la fermeture des pinces.Hair-removing head according to claim 6, characterized in that the grooves of a cam (15a) converge towards the grooves of the other cam (15b) in the control zone of the clip closure.
8. Tête d'épilation selon l'une des revendications précédentes, caractérisée en ce que ladite barrette (17a,17b) est réalisée en une matière plastique.8. Hair removal head according to one of the preceding claims, characterized in that said bar (17a, 17b) is made of a plastic material.
9. Tête d'épilation selon la revendication 8, caractérisée en ce que ladite matière plastique est de l'ABS.9. epilation head according to claim 8, characterized in that said plastic material is ABS.
10. Tête d'épilation selon l'une des revendications 8 ou 9, caractérisée en ce que ladite paroi radiale (7) a une épaisseur d'au moins 1 mm.10. epilation head according to one of claims 8 or 9, characterized in that said radial wall (7) has a thickness of at least 1 mm.
11. Tête d'épilation selon l'une des revendications précédentes, caractérisée en ce que le rouleau (1a,1b) est tenu par un support comportant deux flasques latéraux (47,48) et qui est monté amovible par rapport à un boîtier moteur.11. depilating head according to one of the preceding claims, characterized in that the roller (1a, 1b) is held by a support having two side plates (47,48) and which is removably mounted relative to a motor housing .
12. Appareil à épiler caractérisé en ce qu'il comporte un boîtier prévu pour être tenu à la main et renfermant un moteur électrique d'entraînement, caractérisé en ce qu'il comporte une tête d'épilation selon l'une des revendications précédentes. 12. Tweezers characterized in that it comprises a housing adapted to be held by hand and enclosing an electric drive motor, characterized in that it comprises an epilation head according to one of the preceding claims.
EP08871626A 2007-11-16 2008-11-12 Depilation head for depilation apparatus with tearing clamps Not-in-force EP2227110B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0708061A FR2923685B1 (en) 2007-11-16 2007-11-16 EPILATION HEAD FOR A DEVICE FOR STRIPPING WITH STRIPPING CLAMPS
PCT/FR2008/001588 WO2009095558A2 (en) 2007-11-16 2008-11-12 Depilation head for depilation apparatus with tearing clamps

Publications (2)

Publication Number Publication Date
EP2227110A2 true EP2227110A2 (en) 2010-09-15
EP2227110B1 EP2227110B1 (en) 2011-10-12

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EP (1) EP2227110B1 (en)
CN (1) CN101868162B (en)
AT (1) ATE527909T1 (en)
ES (1) ES2374765T3 (en)
FR (1) FR2923685B1 (en)
RU (1) RU2470563C2 (en)
WO (1) WO2009095558A2 (en)

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TW443921B (en) * 1998-04-15 2001-07-01 Matsushita Electric Works Ltd Depilator
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US20030125754A1 (en) * 2001-12-29 2003-07-03 Alice Davis Electrical hair buffing apparatus
FR2858528B1 (en) * 2003-08-08 2005-09-09 Seb Sa APPARATUS FOR STRIPPING WITH STRIPPING CLAMPS
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WO2015150695A1 (en) 2014-04-04 2015-10-08 Seb S.A. Magnetic epilator

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RU2010124389A (en) 2011-12-27
ATE527909T1 (en) 2011-10-15
ES2374765T3 (en) 2012-02-21
FR2923685B1 (en) 2010-02-26
CN101868162B (en) 2013-07-24
RU2470563C2 (en) 2012-12-27
WO2009095558A3 (en) 2009-09-24
WO2009095558A2 (en) 2009-08-06
FR2923685A1 (en) 2009-05-22
CN101868162A (en) 2010-10-20
EP2227110B1 (en) 2011-10-12

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