HUE033198T2 - Isostatic epilator comprising tweezers moving in translation - Google Patents

Description

iSOSTATiC EPILATOR CO RiiSiiiSl^i ^E2E^S;l^iQ^ í NiiS 1 ^^^jSjlSLÁTiON

This invention relates to the technical fiáid of body care;: appliances implementing a mechanical earn head driven by an electric motor and -n particular the field of mechanical epilation appliances used to pluck hair.

Epilation appliances art? known in the aforementioned field,, and comprise an epilation head equipped with an epilation roller which can rotate freely about an axis parallel tp the surface of the skin being epilated. The epilation/roller is thus equipped with a aeries of tweeters that open and close progressively as the roller rotates.

This type of appliance is described in a document: Fit 2 858 528. Another appliance of this type Is described in a document US 2005/0101971, wherein the :pl«cidbg/tweeters are formed by multiple rows of blades capable of moving in translation and resting:against opposite fixed blades* whereby ali of the mobile blades Of a row are carried by a peripheral shuttle of a rotational roller. Each shuttle comprises cams which, while the shuttle is drive» in rotation central paths forme# by the two groove edges made on the periphery of a central shaft rotatably connected to the housing of the appliance. The shuttles are positioned around the central shaft, such that they are capable of moving axially along said shaft, while being radially incised in position by intermediate linking elements forming a tubular cage which can rotate freely about the central shaft. Moreover, the central shaft is capable of moving axially in translation while being subjected to the action of axialsprings, Which generate the clamping force of all of the tweezers*

Such an appliance effectively allows body hair plucked. However, the fact that multiple mobile blades are rigidly connected to each other results in an unequal distribution of the forces of the springs such that not all tweeters have the same effectiveness. A need has thus appeared for an appliance whose tweezers have substantially the same offe<Éiveness.

Another purpose of the invention is to provide an epiiadon appl iance that has on improved tweeter dosing speed.

One further purpose of the invention is to provide a more robust epilation appliance.

Another purpose of the invention is to provide a more compact epilation appliance. in order to achieve these obfecpves, the invention relates to an epilation head roiier for a motor-drivenepHattoh appSiance, comprising: - a fixed centra! shaftintended to he rotatably connected to a housing of the epilation appliance, • a tubuiar cage: -which can rotate freely about the central shaft and is Intended to he driven in rotation by a motor of the appliance, - which carries plucking tweezer s., each consisting of a fixed blade rigidly connected to the tubular cage, and a mobile higde moyable between an open position in which the mobile blade is far from the fixed blade, and a closed position in which the mobile blade is in contact with the fixed blade. - means for manoeuvring the mobile biades between their open position and closed position as the tubular cage rotates about the central shaft.

According M the roller is characterised in that the manoeuvring means comprise; - return sphhp lhfphded to bring the moWe blades into the dosed position.. • for each mobile blade,, an individual cam which IS: Ponhected in translation to said blade: aod which, to oped: the mobile blade, moves against a cam path arranged on the periphery of the centfpl shaft,

The implementation of an individual cam for each mobile blade, which furthermore is not rigidly connected to any other mobile cam. enables each mobile blade to move independently such that the clamping force applied by one mobile blade does not depend on or is mat affected by the clamping force applied by another blade.

According to one characteristic of the invention, each: return spring acts on at möStfwo mobiSoibiedPssfberéfdrerthe clomping force is perfectly controlled.

Similarly, and according ly one characteristic of the invention, each return spring Is in direct contact with each mobile blade that it returns Id the closed position.

Sirnliariy, according to another characteristic of the invention, each return spring is blades.

According to another embodiment of the invention, each return spring is inserted between a mobile blade and the tubular cage, the roller comprising at least as many return springs as oipbiie blades. The fact· that each spring only acts on a sing!® blade guarantees that the fulkciamping: fee® generated: by the spring is transmitted to saidhfade,

According to another eh®ractefistic of the invention, each individual cam is in contact with the corresponding cam path: only for a moving phase of the corresponding tweeser. Therefore, the cam is not In contact pith the cam path during a large portion of the rotation of the tubuiar cage and In particular when the corresponding: mohiig is in the moving,: closure or opening position respecti veiy, In the hair plucking, phase or In the Hair release phase respectively, in this respect, in one preferred embodiment., the moving phase of th® tweexer aiong the cam path: corresponds only to an opening phase of the corresponding tweeter. Iherefore, the cam iparit is produced so as to break its contact as quickly as possible with the cam to allow the mobile blade to move Into the dosed: position without interfering with the1 force applied by the one or more springs as sod ated with said mobile hiad®.

According to one: ebaraeiehshe # the ibyention, the tubuiar cage composes means for guiding the mobile blades in translation.

According to another characteristic of the invention, each mobile blade comprises at least one translational guide shoe.

According: to on® embodiment of the invention, each mobile blade comprises a: working head intended to cooperate with the fixed biade and opposite the bead, an operating: foot forming: or earrylng the individua! earn.

According to an alternative to this embodiment, the mobile blade is at least partly formed by >3 metal flank.

According to another alternative to this characteristic, each mobile biade comphses, between its working head and its operating foot, a body carrying at ieast one guide shoe.

According to another characteristic of the inventfon, each mobile blade is rigidly connected to a transition gnlde caffiage which cooperates with at ieast one guide rod carried by the tubuiar cage,

According to an aitefnatise to this characteristic, the carriage comprises at ieast one bore for inserting a guide rod carried by the tubuiar cage.

According to another alternative to this charactehsic, each return spring surrounds a guide rod.

According to one characteristic of the invention, the roller comprises at least one row of tweeters aligned In an axial direction perpendicular to a median plane normal to the axis of rotation of the tubular cage, the mobile blades located on a given first side of the median plane moving fmm their closed position to their open position In a given direction withe the mobile blades located on the other side of the median piane move from their closed position to their open position in a direction opposite to that of the mobile hiades located on the first side of the median plane. Such an embodiment is designed to balance the forces applied to the tubular cage.

According to an alternative to this characteristic, the central shaft comprises at least as many cam paths as each row comprises aligned tweeters.

According to the invention, one could also consider an epilation appliance comprising a hous|n| ddslghad to be heid In the hand and containing an electric drive motor., and which comprises an epilation head roiier according to one of the preceding claims.

Moreover, according to one embodiment of the epilation appliance (A), the epilation head roiier is removable and interchangeable with another body care accessory. A body care accessory is understood herein as being any treatment means treating a human body part such as a massage accessory, an exfoliation accessory or even a shaving/cilpper head, etc. W course, the different Characteristics, '.alternatives and embodiments of the invention can be combined: with each other in various combinations insofar as they are notlnppofpatibie with each ether or exclusive with regard: to each other.:

Moreover, various other characteristics of the Invention will emerge from the appended description providedwith reference to the drawings which illustrate non-limiting em bodiments of a roller of an epilator according to the Invention. - figure :i Is a diagrammatic view of an electric epilation appliance comprising an epilationheadrolleraccording to the invention. - figure'% is a partially cutaway elevated side view of the appliance Illustrated In figure 1. • figure 3 is a diagrammatic view of an epilation head roiier according to the invention. ·· Figure 4 is a cross- section of the epilation head roller illustrated in figure §, •'figure 5 is an elevated side view of the epilation head roller illustrated in figure % - f igure 6 is a partlei axial cross-section of the epilation head roller shown in figure 3. • figure 7 is a view of a mobile blade of the epilation head roller in figures 3 to 6. flgureS is eh elevated side view of the mobiie blade shown in figure 7. - figure i is « partially cutaway diagrihf:iiliih':^#^· oHh&amp; epilation head roller illustrated in figure 3. 'figure I# is a view showing the central sheft Of the epilation head roller Illustrated in figures 3 to 6. - Figure 1:1 Is an elevated side view of the centrai shaft shown in figure lö. » figure 12 is a partial axial cross-section similar to that ie figure 6, of another embodiment of an epilation head roller according tothe invention, - Figure 13 is a diagrarppt^io view showing two mobiie blades of the epilation head roller in figure :1.2. - Figure 14 illustrates another embodiment of a mobile blade for an epilation head roller according to the invention. it should be noted ihat the. itiioftfr# mé/m feiétiohaf elements in these figures that are eontmoh to the different alternative embodinients can hear the same reference numbers.

An electric arid mechanical epilation appliance according to the Invention, such as that illustrated in figures 1 and 2, comprises a Hollow: housing, identified as a whoie by the reference number 1, that is comprised from two single-unit: half-shells 2 and 3,. together defining on the one hand, via their outer mrfm^ a grasping area of the epilator and, on the other hand, m casing for enclosing and containing the different functional elements constituting the epilator. Therefore, the casing 1 encloses an electric motor 4 associdted with transmission means S for transmitting the rotational movement of ihdtermlhai pinion δ of the motor 4. According to the exam pie illustrated, the transmission means S comprise a cluster gear with axes parallel to the axis of rotation of the motor, the casing i is equipped with arv: epliofibh heed TO, which comprises a hollow body 11 dehnfng is arranged an epilation roller W, which is positioned fltrsh at thesieyel of a window 114 arranged in the hollow body 21

The epilation roller 13 Is partially able to rotate freely about an axis Δ and is driven in rotation via the transmission means 5 by the electric motor 4. The epilation roller IB thus comprises, at the level of its periphery, a series of tweezers X5 that open and dose pfogresslyely a s the roller rotates.

The Invention more particularly refers to the design of the epilation roller 13 also referred to herelh as the epilation head roller.

The rollerΪ3 comprises, as shown more particularly in figure 3, a fixed central shaft 28, intended to berotatably connected to the housing 1, either directiy or via a mobile part enabling the adjustment of the angrriar position of the central shaft 20 in relation to the housing I.

The roller 13 further comprises a tubular edge 21 which carries the tweezers 35 and which is able to rotate freely about the central shaft 20 by being driven via a wheel 22 rotatably connected to the tubular cage 21, According to the example illustrated, the tubular cage 21 comprises six strips 23,:shown in figdre 4i each # which carries a row of five plucking tweezers 15 aligned in a: direction D that is substantiafiy paraiiei to the axis &amp;. bach plucking tweezer IS Is formed from a fixed blade 25 and a mobile blade 26. The fixed ; blades 25 are rigidly connected to the tubuiar cage 21 insofar as, according to the example IIIustratedi the fixed blades 25 of the same row form an integral part of the corresponding strip 23. fach mobile blade 26 is capable of moving between a dosed position pyhbWrt in figure 5 arid astopen position Ö shown in figures 5 and 6, in order in ensure the movements of the mobile blades 26,. the roller 33 comprises manoeuvring means 32, the embodiment of which will fee shown hereafter.

Each mobile blade: 26 comprises a working head 30 IntepdedTo cooperate with the corresponding fixed blade 25 and which is formed by a metal flank, bach mobile blade 26 further corn prises, as shown in figures 1 and 8, a guide carriage 31 which,, according to the example illustrated, is moulded over the metal flank constituting the working head 30. The guide carriage 33. thus forms the:hody of the mobile blade 26 and Is rigidly connected to the working head. The guide carriage 31 cooperates with at least one and, according to the example iiiestrateck with two translational guide rods 32, shown more dearly in figure 9.. in this ease, the guide rods 32 are each formed from an rod extending parallel to the axis L The guide carriage 31 thus comprises, at the level; of a body of the mobile blade 26, two bores 33 which are defined: by two sieaves extending along either side of the working head 30, and through which the guide rods 32 are passed, such that the roobiie blades 26 can move in translation afong the fatter.

To this end, the manoeuvring means 17 comprise for each mobile blade 26, at least one and, according to the example illustrated,, two return springs 34 for returning the corresponding mobile blade to the dosed: position F. Id this case, each spring 34 Is Inserted between the mobile blade 26 and the tubular cage 21. Indeed, each spring 34 rests against the corresponding strip to repel the mobile blade 26 aush that the working head 3Ö conies to rest against the fixed blade 25 that forms an Integral part of sald stripv Therefore, in the closed position, ail of the forces exerted by each spring 34 are completely absorbed by the corresponding Strip 23 such that this isostatic assembly prevents the forces exerted by the one or more springs of a tweeter 15 in the dosed: position from disrupting the functioning of the other tweeters 15, According to the assembly adoptedxherein/thc springs 34 are heireal springs, each of which surround a guide rod 32, which eases the assembly ofthproifer 13: accord ingle the invention.

The manoeuvring means 27 further comprise, for each mobile blade 26, ah individual cam 35 which is connected in translation to the corresponding mobile blade 26 and which, in this case, is formed from an operating foot extending dp head 30 in relation to the bores 33. The individual cam 35 it) this case has a substantially axisymrp^rleeyiindrieal^shape.

The manoeuvring means 2? further comprise, at the level of the outer surface of itíte centra! shaft 20, several cam paths 37, in particular shown In figures 10 and ti, each intended to cooperate with an individual cam: IS, Thus, the central shaft 20 comprises at least as many cam paths 37 as each row comprises tweezers IS. According to the example illustrated, the central shaft comprises more cam paths 37 than each row comprises tweezers IS In order to take into account the axial offset of the tweezers from one row to the next, as shown in particular ip figure 5.

The cam paths 37 are configured to enable an opening ίο be actuated and a closure tp be authorised: for each tweeter 15 during the rotation of the tubular cage 21. Therefore, every time an individual cam 35 enters the corresponding cap! "path 3?, It comes to rest against an edge of the latter and the mobile blade 26 is gradually moved towards the open position in which it is positioned when the tweeter 16 arrives at the start of the window 14, taking into account the direction of rotation of the tubular cage 21, The mobile blade 26 is held in this open position ön a pöttianöf the 14, for exsmiíl© ss far as th4 middle point, to allow hair to be grasped. Then, each cam path 37 is designed to allow the mobile blade 26 to return to the closed position to grip the hair under the effect of the springs 34.

Insofar as the damping force is not applied by the cam paths 3?; the iatierare, according to the example Illustrated, designed to only he In contact with the corresponding individual cam 35 during the tweeter opening phase and the phase in which the tweezer is held open. Thus, the cam paths 37 only occupy part of the circumference of the centra! shaft 20,; as shown mflgutes Id and 11. Moreover, the can's paths 3? trod suddenly., such that the tweeters 16 dose very quickly under the effect of the return springs 3% which also results in a relatively high damping fércei

Furthermore, in order to ensure, as far as possible, compensation Or balancing: el the forces generated by the individual cents 65 Ph the centra! shaft 20, the mobile blades 26 on the same side of a median plane M normái to the axis of r otation &amp; open in the same direction, whereas the mobile blades 26 located on the other side of the median plane M open In an Opposite direction. Thus, in figure S, the mobile blades 2.6 located to the left of the median plane M move towards the left when passing from their dosed position F to their open position Ö, whereas the mobile blades 26 located to the right of the median plans M move towards the left when passing from their closed position F to their open position 0. Of course, a different opening direction could have been chosen.

Accord ing to the: af erem ent toned example, desert bed with reference to figures: 1 to 11, each of the springs only acts on a single mobile blade 26. However, according to the invention, each spring 34man act directly on two mobile blades 36: an is; the case in the alternative embodiment illustrated in figures 12 and i$,

According: to this alternative: embodiment each return spring; Is Inserted between two mobile blades 26, the opening movements pf which: occur in opposing directions.

Mpreover, according to this embodiment, the mobile blades 26 are each formed by folding a metal flank which farms the working head 3Ö and the body 40 of the corresponding mobile blade 26. According to this example, the body 40 carries: two guide shoes 41 that are formed by Mding the rnetal flank and that are intended to cooperate with: guide; grooves;: 42 of the tubular cage 21. According to th;s exasrmle embodiment, each individual cam: IS is formed front a: rivet, which is figldly connected to the body 40, and the foot of which is intended to cooperate with a cam path 3? of the centrai shaft 20. figure 14 illustrates another embodiment of a mobile blade 26.. which Is formed from a flat metal flank that has a general T shape and the body 40 of which comprises two lateral guide fingers 43, and opposite the working head 30, the individual cam 35. Of course, each mobile blade could take on any other shape. furthermore, according to the aforementioned examples, the mobile blades 26 move in translation. However, they could move, between their opening position and closing position, according to a rotational movement or oscillatory movement about an axis, Including in a plane normal to the axis I,

Of course, various other modifications can be made to the Invention within the Scope of the appended claims.

Claims (11)

SHOPPING POINTS WITH IMMEDIATE IMLIPTO HANDBOOK MOVEMENTS 1. A cylindrical cylinder for a motor epi-ejection device comprising an epilated head cylinder (20) which is configured to rotate in a rotatable manner with a housing of the epithelium, a hollow tubular cap (21): which is rotatable about the central axis (20) and is configured to rotate the motor of the device, which carries a pinch (15), each of which has a fixed plate fixed to the rain-shaped jacket (21). (25) and a plate (26) moving between an open position (Ö) and a closed position (F) which, when open, moves away from the fixed plate (21) of the movable plate (26), and which, when closed, moves away the movable plate is in contact with the fixed plate (25), - means for directing the movable plates (26) between the open (0) and closed positions (F) in the tubular jacket (21). rtisíy · - (¾ Wf &amp;% «$% á, with%% that its leader $ 2 includes: - return springs (34) that are configured to lock the moving plates (26). a separate cam (35) for each of the moving plates (26), which is connected together with the plate in a progressive manner, and moves to the opening of the movable plate (26) by a dummy shoulder located on the periphery of the central shaft (20). 37) An epithelial head cylinder according to claim 1, characterized in that each return spring (34) acts on up to two moving plates (26), 3. The The ejector head cylinder according to claim 1, characterized in that each return spring (34) is inserted between two moving plates (26), 4. An epoxy head cylinder according to claim 1, characterized in that each return spring (34) is inserted between a movable plate (26) and a tubular jacket (21), and the cylinder retains at least the same amount of return spring (34). as a moving disk {26), An epilating cylindrical roll according to one of the preceding Claims, characterized in that each of the individual cams (35) only contacts the corresponding cam track (37) for the displacement phase of the corresponding tweezers (16). An epilating head cylinder according to the preceding claim. characterized in that the displacement phase of the tweezers on the cam shank (37) only corresponds to the opening flushes of the corresponding tweezers (15). The roller cover (21) according to one of the preceding claims, comprises a tubular jacket (21) for moving discs (devices leading to advanced motion of Mj). 6. An epithelium cylinder according to one of the preceding claims, characterized in that each moving plate (26) comprises a molding strip (30) designed to cooperate with the fixed plate (25), and the head: on the opposite side, a separate a cam (35) forming or carrying a guide pin. An epithelial head cylinder according to claim 8, characterized in that the moving plate (26) is in the form of a guide plate, 10, A 8, or 9, according to claim 1, characterized in that each of the moving discs is 26) between the monaural (30) and the displacement gauge «x &amp; gfftpft, a tester carrying at least one yoke (41). The epitating head according to one of claims 1 to 7, wherein each of them is mobile ?. (26) is rigidly connected to an advanced motion guide (31) which cooperates with at least one guide bar (32) carried by the tubular jacket (21), the epiphysis cylinder according to claim 11, characterized in that the sleeve includes a through hole (33) for a guide pin (32) carried by the tubular jacket (21). 13. The dummy according to claim 12, wherein each return spring (34) surrounds a guide pin (32), An epilating head cylinder according to one of the preceding claims, characterized in that it comprises at least one row of tweezers (15), which are arranged in an axial direction perpendicular to the center plane (M) at right angles to the axis of rotation of the tubular jacket (21): moving plates (26) located on the same front side of the middle plane (¾) move from their closed position (F) to their open position (O) in the same Direction, while moving plates on the other side of the middle (M) from their closed position (F) in their open position (0) they move in a direction opposite to the direction of displacement of the movable plates (26) located on the front side of their centers (M), 15. Any of the foregoing Claims, wherein said central axis (20) comprises at least as many cam tracks (37) as each row of tweezers in line e | y. 16, an epilating device (A), comprising a hand-held housing which includes an electric drive motor, the device comprising a ejector cylinder of one of the preceding Claims. The epithelium of claim 16. (A), characterized in that the horse head "Henger" can be disassembled and replaced with another body care accessory. (Ά authorized)