FR2684857A1 - HAIR REMOVAL APPARATUS. - Google Patents

Abstract

Hair removal apparatus for removing hair from the human body, comprising a housing (2) which the user can hold in the hand, combs (7, 8) driven by a motor (4) which are provided with clamping elements (28, 29) which form numerous interstices and which can be brought into mutual support in pairs, at least one of the combs (7, 8) being movable against the effect of a braking force, characterized in that that the braking force which acts directly or indirectly on at least one of the combs (7, 8) exerts a uniform braking force over the entire area of movement of the comb.

Description

The present invention relates to a hair removal device L to eliminate

  poi Ls of the human body which includes a box that the user can hold in the hand, combs driven by a motor which are provided with numerous clamping elements capable of coming to bear on each other in pairs and forming interstices , at least one comb being displaceable against La

force of a means of pressure.

  Document EP 0 272 269 Bi already discloses a hair removal device of the type mentioned above which has a

  electric motor which oscillates two super combs

  placed with teeth The led comb is movable against

  two springs which act at the two ends of the comb

  tion of the movement and the force of the springs extends in the same plane as the direction of movement of the linear combs, so that, as a result of the characteristic of the springs, the force of the springs which acts on the driven comb increases as and as the teeth which cooperate of the two combs approach each other The maximum clamping force is therefore exerted only for a very short instant when the teeth grouped in pairs are in abutment against each other This instant is too short to allow effective clamping and pulling of positioned bristles In addition, the clamping force cannot be adjusted to a desired or optimal clamping pressure, so that it is not possible to obtain the force desired clamping

  When the teeth which cooperate in pairs are in support, in part

  culier When tolerance problems arise The clamping pressure is too high and the bristles are crushed or the clamping pressure is too low so that the bristles are not held long enough by the teeth and therefore cannot to be pulled out When the hairs are not fully grasped, the skin is simply lifted without the hairs

are torn off.

  The object of the present invention is to remedy these drawbacks.

  come by forming the clamps and associated drive members in such a way that it is possible

effectively pulling out hairs.

  According to the invention, this object is achieved by the fact that the braking force which acts directly or indirectly on at least one comb exerts a uniform braking force over the entire area of movement of the comb. This makes it possible to guarantee in a simp le '' Before switching on the device, the effect of a braking force and therefore the clamping force which acts directly or indirectly on at least one comb are always exactly defined and regulated even when the dimensions of the elements of tightening differ as a result of manufacturing tolerances As the tightening elements are moved over the surface of the skin in intimate contact therewith by pressing against each other for a determined interval under the influence of a pressure d '' regular support, it is avoided that the gripped and tight hairs escape from the gap between the teeth in mutual support and that

  The skin is then partially lifted.

  It is also advantageous that the direction of the braking force which acts directly or indirectly on at least one comb is transverse to the direction of movement of the comb, of the axis of rotation and / or of the part of the comb which must be braked or of its drive parts Since the braking force is transverse to the direction of movement of the comb and / or The

  part of the comb to be braked or its driving parts

  In addition, it is possible to adjust exactly, regardless of the position of the part to be braked, the desired braking force which is then also available uniformly over the entire stroke of the part of the comb which is to be braked because The Line of action of the braking force is no longer coaxial in the direction of movement of the part of the comb which must be braked, as was the case previously, but preferably cuts at a certain angle The axis of rotation or the plane of movement. According to a development of the device according to the invention, another possibility consists in providing, for direct or indirect braking of the comb and / or of a part of the comb which is to be braked or of its drive parts, a braking device.

  which is actively connected to at least one of these parts.

  In another development of the invention, it is advantageous for the braking device to consist of at least one brake shoe acting on the part of the comb which is to be braked and of an adjustment device for modifying the pressure.

braking.

  According to a preferred embodiment of the invention, there is provided a spring between the brake shoes and the regulating device making it possible to modify the brake pressure because the lines of action of the braking force extend substantially perpendicular to the lines of movement of the part to be braked, it is also possible to use a spring to support the brake shoes since the spring force which is necessary to push the brake shoes against the part to be braked brake and therefore the necessary clamping force which must be obtained between the clamping elements does not change regardless of the position occupied by the

part to be braked.

  It is particularly important for the present invention

  The regulating device for modifying the braking pressure is in the form of an adjusting screw or a wing screw which is movably arranged in the epilation head or in at least one braking jaw. and which rests

against the spring.

  It is also advantageous that the two combs are

  superimposed and that the first comb is driven by a provision

  training device causing an oscillating movement, the second comb being driven directly or indirectly by the first comb against The action of the braking device As a result, the skin is not lifted or is only very slightly lifted when the Ls poi are torn off, since the clamping elements rest at p Lat on the surface of the skin keeping the skin down during the pulling of the hairs Therefore, the pain

  caused by Hair removal is reduced.

  It is also advantageous that the driving device

  ment to drive the first comb or comb leading either in the form of an eccentric drive device This makes it possible to obtain an oscillating movement of the combs with means

simple to make.

  It is advantageous for this purpose that the driving device

  eccentrically consists of an eccentric disc and a

  crank hinged thereon and one end of which is articulated

  cu Lée to the leading comb which is actively connected to the comb

  driven which can be braked by the braking device.

  In a development of the device according to the present

  invention, it is also possible that the driving device

  eccentrically consists of a cam disc and a rod

  pusher which can be brought to bear against the cam disc and

which is connected to the leading comb.

  In another development of the invention, it is advanced

  so that the drive device can be operated by

  via a reduction gearbox connected to the engine.

  This allows the axes of rotation of the two concentrically arranged combs to be parallel to the axis of rotation of the motor and / or to the axis of rotation of the toothed wheels and / or to the axis of

rotation of the eccentric disc.

  It is further advantageous that, during the operation of the hair removal device, at least one of the axes of rotation is

  substantially perpendicular to the surface of the skin.

  In another development of the invention, it is advanced

  Tagous that the braking device is in the form of a provision

  two jaws in which the two brake shoes are held together on one side of the part to be braked by a joint and on the other side by an adjusting screw or a wing screw, the threaded part of which can penetrate into a bore provided in a flange of the first brake shoe and can be screwed into a threaded bore provided in the second shoe

braking.

  An additional possibility according to a development of the device according to the invention consists in providing between the head of the wing screw and the flange a spring by means of which it is possible to produce a determined braking pressure for a corresponding position of the wing screw Le comb leading is driven by an oscillating movement advantageously caused by the eccentric or cam drive As a result, the surface of a clamping element alternately comes into contact with the surface of

  the adjacent driven clamping element.

  It is also advantageous if the combs are under

  form of body of revolution or linearly movable combs

  is lying. Other advantages and characteristics of the invention

  will appear better in the detailed description which follows and

  refers to the accompanying drawings, given solely by way of example, and in which:

  Figure 1 is a sectional view of an epila-

  tion shown schematically which comprises an electric drive motor for driving disc-shaped combs,

  FIG. 2 represents a first example of realization

  tion of a crank drive device for driving the combs according to FIG. 11, FIG. 3 represents a second embodiment of a crank drive device provided with a drive disc for driving the combs according to Figures 8 to 10,

  FIG. 4 represents a third example of a reali-

  sation of a crank drive device comprising a cam disc for driving the combs according to FIGS. 8 to 10,

  FIG. 5 represents a first example of realization

  tion of a braking device for the defined braking of the combs according to FIG. 8, FIG. 6 is a top view (according to FIG. 7) of a second embodiment of a braking device, FIG. 7 is a side view of the braking device according to FIG. 6, FIGS. 8 to 11 represent different examples of embodiment of the combs in bottom view, FIG. 12 represents the evolution over time of movement of two cooperating clamping elements, the dotted lines indicate the area in which the clamping elements exert a clamping action, FIGS. 13 to 18 represent different positions of the disc-shaped combs and of the associated clamping elements. Figure 1 shows in partial section an apparatus 1 for removing body hair or hair removal device which consists of a housing 2 and a hair removal head 3, the housing

  being intended to receive an electric motor 4 and a gear 5.

  The gear 5 is driven by the electric motor 4 which can be connected to the mains, to a rechargeable accumulator or to

disposable batteries.

  The motor 4 is indirectly connected to the combs 7 and 8 by means of the gear 5 which has numerous toothed wheels and a drive device 48 The device

  48 (Figures 1 and 2) can be driven by a demul-

multiplier 49 connected to the motor 4.

  The driving device 48 for driving the first

  comb 7 or leading comb is in the form of a driving device

eccentrically (Figure 2).

  The motor 4 (FIG. 1) comprises a drive shaft provided with a pinion 16 which is connected to an eccentric disc 22, which is part of the drive device 48, by means of

  two toothed wheels 17, 18 which form part of the reduction gear 49.

  As shown in Figures 2 and 3, a crank 19 of the drive device 48 is connected by one of its ends

  to the eccentric disc 22 by means of an articulation axis

  tion 20 and by the other of its ends to the comb leading 7 by

  through a hinge pin 21.

  According to FIG. 2, the eccentric disc 22 drives, via the crank 19, the comb 7 housed in the epilation head 3, communicating to it an oscillating movement. The comb 7, which is described as a leading comb, cooperates with the second comb 8 which is also movable in one direction and in the other.

  According to Figure 4, instead of driving the disc to excent

  plate 22, the toothed wheel 18 can drive a toothed wheel 27 disposed on a shaft 26 and also a cam disc 24 mounted

  also on the shaft 26 which gives an oscillating movement to the rod-

  pusher 25, pressing against the cam disc 24, and therefore at

comb 7.

  The comb 7 is mounted on an axis of rotation 13 so as to be able to oscillate in a determined angular range by cooperating with the second comb 8 which can be moved in a

sense or in The Other.

  The axis of rotation 13 of the two combs 7, 8 arranged concentrically is para LLèLe to the axis of rotation 50 of the motor 4, to the axis of rotation 51 of the toothed wheels 17, 18 and to the axis of

  rotation 52 of the eccentric disc 22 When the earpiece La-

  tion works, at least one of the axes of rotation, in particular

  the axis of rotation 13 of the combs 7 and 8 is substantially perpendicular

  cu Laire on the surface of the skin which is in contact with the combs.

  The difference between the two drive devices 48 of the exemplary embodiments according to FIGS. 3 and 4 consists in the drive mode which is carried out, on the one hand, thanks to the eccentric disc 22 and, on the other hand, thanks to to the cam disc

  24 The eccentric disc 22 of Figures 2 and 3 produces a movement

alternative of combs 7 and 8.

  Figure 12 graphically shows the evolution over time of the movement of the eccentric disc 22 and the corresponding clamping force F Thanks to the drive by means

  of the cam disc 24, a variable or irregular evolution is obtained

  Link of the movement and the shape of the corresponding curve strongly depends on the shape of the cam disc. In this way, it is possible to individually control the opening time, the clamping force and the sequence of the lifting movement with the eccentric disc 22, we obtain a sinusoidal evolution of the

movement.

  As shown in Figures 1 and 8, the combs 7 and 8 have on their periphery numerous clamping elements or teeth 28, 29, respectively, arranged at equal distance from each other The clamping elements or teeth 28 are arranged on the comb leading 7 and the clamping elements or teeth 29 are arranged on the driven comb 8 The clamping elements 28 and 29 are arranged relative to each other on the axis 13 of te L The manner that their surface faces the skin is substantially para LLèLe on the surface of the skin The axis 13 is substantially perpendicular to the surface of the skin The two combs 7 and 8

  are relatively thin and overlap during operation

  ment, The clamping elements or teeth 28 and 29 of the combs 7 and 8 respectively are arranged next to each other on the surface of the skin by holding it down during the process of tearing off the hair, so that the dou Them felt

is p Lus faib Le.

  The two combs 7 and 8 are arranged in such a way One with respect to the other that each tooth 29 of the comb 8 is located between two teeth 28 of the comb 7 FIGS. 8 and 13 to 18

  represent the different positions of teeth 28 and 29.

  To obtain a defined clamping effect between the different

  clamping rents or teeth 28, 29, it is possible, according to

  Figures 2, 6 and 7, to brake The comb leading 7 thanks to a provision

braking device 30.

  According to Figures 6 and 7, The braking device 30

  consists of a jaw brake 31 which has an upper jaw

  upper 32 and a lower jaw 33 connected by a hinge 53 and which surround a rotary part, for example a shaft or, according to FIG. 1, a cylindrical part 34 of the comb 7 The braking pressure which acts on the cylindrical part 34 of the comb 7 can be adjusted using a screw, according to FIGS. 6 and 7, using a wing screw 35 For this purpose, the threaded part 38 of the adjusting screw or wing screw 35 can penetrate a bore 37 provided in a flange 36 of the first brake shoe 33 and can be screwed into a threaded bore provided in the second brake shoe 32 It is possible to modify the brake pressure which acts on the comb 7 by making

turn the screw.

  The braking device 10 which has just been described is very inexpensive and can be incorporated easily into the housing.

  2 of device 1 occupying a small space.

  As shown in FIG. 7, it is possible to provide between the head 40 of the wing screw 35 and the flange 36 a spring 41 which makes it possible to establish a defined braking pressure for a

  corresponding position of the thumb screw 35.

  Figures 2 and 5 show another embodiment of a braking device 30 for combs 7 and 8 linearly movable The driven comb 8 is mounted so

  linearly movable in a slide 45 of the epilation head

  tion 3 and it is provided at its end with a cross member 42 which is disposed between a fixed guide part or brake shoe 32 disposed on the epilation head 3 and the adjustable brake shoe 33 The adjustable brake shoe 33 is connected to a screw

  with ears by means of a cylindrical spring 41.

  According to Figure 2, the driving comb 7 is driven in an oscillating movement parallel to the driven comb 8 by the eccentric disc 22 and the crank 19 connected thereto, while the driven comb 8 according to Figures 2 and 5 is braked depending on the corresponding braking setting For this purpose, according to the embodiment of FIG. 2, it is possible to use a simple adjusting screw 44 in place of the wing screw 35 according to the

figure 5.

  The mode of action of the two combs 7, 8 which cooperate is shown in FIGS. 13 to 18 as well as in FIG. 12 La

  figure 13 shows the position in which a reverse occurs

  movement of the oscillating combs 7, 8 This position is represented by O in FIGS. 12 and 13 In position 0, the clamping elements or teeth 28, 29 are pressed against each other in pairs, that is to say -to say that they are in contact at the level of

  their clamping surfaces 46 ', 47' which face each other.

  Figure 14 shows the start of the comb movement

  leading 7 in the direction of arrow F The driven comb 8 remains immobile

  bile, since it is braked by the braking device 30 During this movement, the tooth 28 rotates in the direction of the arrow F from the position O to the position A. FIG. 15 shows how the tooth 28 continues its movement in the direction of arrow F and is brought into abutment by its clamping surface 46 against the clamping surface 47 of the tooth 29 This movement is the same for the clamping elements or teeth 28 a and 29 a from this position , The led comb 8 is

driven by the comb leading 7.

  Figure 16 shows The end of the movement of the combs 7 and 8 From this position, the inversion of the movement of the two combs 7 and 8 begins again (see point C and the segment of curve 0-C in Figures 16 and 12 ) This segment of curve or this

  amplitude corresponds to the oscillating movement of the two combs 7, 8.

  FIG. 17 again shows the movement in the direction of F f L 'The driven teeth 29 remain in their position shown in FIGS. 16 and 17, so that a

  gap between clamping elements or teeth.

  FIG. 18 represents the instant during which the clamping elements or teeth 28, 29 come into contact with one another. The movement is extended in the direction of the arrow L f ', so that it is now the other side or clamping surface 46 'of the tooth 28, which was not a bearing surface in the movement described above, which bears against the bearing surface 47' of the tooth 29 The movement of the teeth continues until they reach position again

see Figure 13.

  Figure 12 represents the oscillating movement in the form of a sinusolda curve Le This figure also represents the braking force F in dotted lines Between the positions according to Figures 13 and 15 and is Lon Figures 16 and 18, The clamping elements or teeth move away from each other, so that the clamping effect between the clamping elements or teeth 28, 29 disappears IT appears a clamping pressure when the clamping elements or teeth 28, 29 occupy the positions according to the figures and 16 then The positions according to Figures 18 and 13 in

  Which i Ls are pressed against each other.

  When the Apparatus L is in the hair removal position in contact

  with the surface of the skin according to FIG. 1, the ear phases La-

  tion take place according to Figures 13 and 18 Between the positions according to Figures 13 to 15, the clamping elements or teeth 28, 29 occupy their separated position so that, during a movement of the apparatus according to Figure 1 in the direction of body hairs, the hairs reach between the clamping elements or teeth 28, 29 In the position according to FIG. 15, the hairs are clamped and eliminated under the effect of the clamping force (see FIG. 12, force F) Because , thanks to the braking device, it is possible to precisely adjust the clamping force, it is possible to avoid that

the hairs are not crushed.

  Between the positions according to FIGS. 15 and 16, the tight body hairs (FIG. 12) are maintained from point B to point C and are pulled out by the movement of the teeth 28, 29 The trajectory between O and B is sufficient to grasp and completely position the body hairs The distance BC depends on the diameter of the two combs 7, 8 and on the travel of the eccentric or the cam These two parameters are determined from

  so as to ensure an irreproachable removal of the hairs.

  Between the positions according to FIGS. 16 and 18, the hairs which have not been gripped or torn off by the clamping elements or teeth 28, 29 are gripped during the subsequent cycle by the elements

  clamping or neighboring teeth which now cooperate with each other.

  As already indicated, the number of clamping elements or teeth 28, 29 intended to grip the body hairs

  depends on the diameter of the two combs 7, 8.

  The thickness of the clamping elements or teeth is as small as possible and the distance between the clamping elements or teeth is such that it allows the body hairs to penetrate into the interstices 12 between the clamping elements or teeth 28, 29. It is advantageous that the edges of the surfaces 46, 47 are slightly rounded to prevent the body hair from

are overwritten.

Claims (15)

  1 hair removal device for removing hair from the human body, comprising a box (2) that the user can hold in his hand, combs (7, 8) driven by a motor (4) which are provided with clamping (28, 29) which form numerous gaps (12) and which can be brought into mutual support in pairs, at least one of the combs (7, 8) being able to be moved against the effect of a braking force , characterized in that the braking force which acts directly or indirectly on at least one of the combs (7, 8) exerts a force of force over the entire movement area of the comb uniform braking.   2 hair removal device according to claim 1, charac-   terized in that the direction of action of the braking force which acts directly or indirectly on at least one of the combs (7, 8) is transverse to the direction of movement or to the axis of rotation of the comb and / or the part of the comb to be braked or its training parts.   3 hair removal device according to claim 1 or 2, characterized in that, for directly or indirectly braking the comb (7, 8) and / or part of the comb (7, 8) which is to be braked or its parts drive, a braking device (30) is provided which is actively connected to at least one of these parts.   4 hair removal device according to claim 3, charac-   terized in that the braking device (30) consists of at least one braking jaw (33) which acts on the part of the comb (7, 8) which is to be braked and of an adjustment device for change the brake pressure.   5 hair removal device according to claim 4, charac-   terized in that there is provided between the brake shoe (33) and the adjusting device a spring (41) for modifying the pressure braking.   6 hair removal device according to claim 4, charac-   characterized in that the adjustment device for modifying the braking pressure is in the form of an adjustment screw or wing screw (35) which is housed in the epilation head (3) and in at least one braking jaw (32 or 33) and which is pressed against the spring (41).   7 hair removal device according to any one of the res-   dications previous, characterized in that the two combs (7, 8) are superimposed and in that the first comb (7) is driven by a drive device (48) which causes an oscillating movement, while the second comb ( 8) can be driven directly or indirectly by the first comb (7) against   the effect of the braking device (30).   8 Hair removal device according to any one of the res-   dications previous, characterized in that the drive device (48) for driving the driving comb (7) is under   form of an eccentric drive device.   9 hair removal device according to any one of   previous claims, characterized in that the device   eccentric drive consists of an eccentric disc (22) and a crank (19) articulated thereon and one end of which is articulated on the driving comb (7) which is actively connected to the driven comb (8 ) which can be braked by the braking device (30).   Hair removal device according to any one of   Claims 1 to 7, characterized in that the drive device   This consists of a cam disc (24) and a rod.   pusher (25) which can be brought to bear against the cam disc   (24) and which is actively connected to the driving comb (7).   11 hair removal device according to claim 7, charac-   characterized in that the drive device (48) can be   actuated by a reduction gear (49) connected to the motor (4).   12 Hair removal device according to any one of   previous claims, characterized in that the axes of rotation   tion of the two concentric combs (7, 8) extend parallel to the axis of rotation (50) of the motor (4) and / or to the axis of rotation (51) of the toothed wheels (17, 18) and / or to the axis of rotation (52) of the eccentric disc (22).   13 hair removal device according to any one of   previous claims, characterized in that, during operation   operation of the hair removal device, at least one of the axes of rotation of the combs is substantially perpendicular to the surface skin.   14 hair removal device according to claim 4, charac-   characterized in that the braking device (30) is in the form of a two-part brake shoe in which the two brake shoes (32, 33) are held together on one side of the part to be braked by a joint (53) and on the other side by an adjusting screw or wing screw (35) whose threaded part (38) can penetrate a bore (37) provided in a flange (36) of the first brake shoe (33) and can be screwed into a   threaded bore provided in the second brake shoe (32).   15 Hair removal device according to any of the   previous claims, characterized in that between the head   (40) of the wing screw (35) and the flange (36), there is provided a spring (41) by means of which i L is possible to adjust a determined braking pressure for a corresponding position of the screw ears (35).   16 Hair removal device according to any one of the   previous claims, characterized in that the combs (7,   8) are in the form of bodies of revolution or linearly displaceable combs.