BRPI1106954A2 - Precision head electric hair removal device - Google Patents

Abstract

ELECTRIC HAIR DEPILATION WITH PRECISION HEAD. The invention relates to an electric hair removal apparatus comprising a housing (1) comprising an electric motor (4) associated with the transmission devices (5), a waxing head (10) which is attached to the housing (1) and comprising a hollow body (11) enclosing a depilation chamber (12) open at the level of a depilation window (14) comprising two parallel straight longitudinal edges (20, 21) and two arcuate transverse edges (22, 23) ; a depilatory roller (13) disposed within the depilatory chamber (12) so as to surface at the depilatory window (14) driven by rotation of the <30> axis by the drive devices (5), the <30 axis being parallel to the longitudinal edges (20, 21), comprising a series of tweezers which open and close as the roll (13) rotates about the axis <30>; devices (15) for defining the angular sectors about the <30> axis, opening and closing of the epilating roller forceps, the epilating head (10) comprising a movable wicket (25) rotating to said axis < 30> defining at least one movable longitudinal edge (21) of the depilation window (14) and comprising a bearing shoulder (26) over the area to be depilated extending in the extension of the opposing movable longitudinal edge (21) shaving window (14) and defining a skin contact surface (S) in the area to be shaved.

Description

"ELECTRIC DEPILATION EQUIPMENT WITH HEAD OF

PRECISION"

Field of the Invention

The present invention relates to the technical field of electric personal care apparatus and, more particularly, the field of electric mechanical hair removal apparatus still called epilators.

Depilation devices are, for example, described in FR2668902, FR2926962 or EP1884174. Generally, an electric hair removal apparatus comprises a housing comprising an electric motor associated with transmission means. This box is equipped with a removable epilating head comprising a hollow body enclosing an epilation chamber open at the level of a epilation window comprising two parallel straight longitudinal edges and two arched transverse edges. The epilating head comprises a epilating roller which arises at the level of the epilation window and which is driven by the drive devices in rotation about itself along an axis Δ parallel to the longitudinal edges of the epilation window. The epilating roller comprises a series of forceps which open and close as the roller rotates about the Δ axis. In order to control the opening and closing movements of the tweezers, the epilating head also comprises angled sector defining devices about the Δ axis, opening and closing of the epilating roller tweezers. In order to ensure good hair removal, the tweezers should be opened when they reach window level and close when inside the window to grasp the hair to be pulled out.

Known shaving devices fully satisfy their shaving function. However, their ergonomics could be improved. In fact, considering the operation of the epilating roller, the epilating head has a sense of use whereby the head must be moved over the region to be epilated. For this sense is not immediately visible in the known apparatus. In addition, in order to obtain a good quality hair removal, it is preferable to slightly stretch the skin of the region to be shaved, which is usually done by the free hand that does not hold the epilator. However, this two-handed work is not always possible particularly when shaving the armpits, for example.

Then there is a need for a shaving device which, on the one hand, indicates the wrong way of using or applying the shaving head and, on the other hand, ensures a slight tension on the skin of the region to be shaved without you need to use both hands.

On the other hand, the epilators with roller that comprises pairs of rotating and tweezers are pinched by the hair, if the user does not keep his epilator with a good angle of epilation, the efficiency will be reduced and even null. The angle of inclination should be placed so that the forceps close as they are closer to the surface of the skin to be shaved. This allows you to pluck shorter hair and increase the efficiency of the epilator. According to some rotation angles of the tweezers then an efficiency problem arises due to the inclination of the epilating roller. In order to improve the clamping angle, a frame or semi-frame placed around the rotating river may be provided. The frame defines a plane and is joined to the roll to orient the clamping angle. Thus, the passage over the skin of the frame allows to orient the tweezers to have the most effective clamping angle possible. EP1024726 discloses such an apparatus comprising a head with two parallel cylinders on either side of the head that touches the skin when the user applies the apparatus against the skin. The appliance allows some adjustments of the hair removal angle according to the inclination via the two rollers in contact with the skin, but has several drawbacks: it does not allow stretching the skin, has a poor support on the skin, occupies a large space ...

In order to achieve these objectives, the invention relates to an electric hair removal apparatus comprising: - a housing comprising an electric motor associated with the hair removal devices.

streaming,

- a hair removal head which is attached to the box and comprising:

- a hollow body enclosing a shaving chamber open at the level of a shaving window comprising two parallel straight longitudinal edges and two

arched transverse edges, - a hair removal roller which:

- is arranged inside the shaving chamber so as to surface at the level of the shaving window,

- is driven in rotation of the Δ axis by the drive devices, the Δ axis being parallel to the longitudinal edges,

- comprises a series of tweezers which open and close as the roller rotates about the axis Δ,

- devices defining the angular sectors around the Δ axis, opening and closing of the epilating roller forceps.

According to the invention, the epilating head comprises a wicket

rotating movable part of said axis Δ defining at least one movable longitudinal edge of the depilation window and comprising a bearing shoulder over the depilating zone extending from the movable longitudinal edge opposite the depilation window and defining a surface contact with the skin of the area to be shaved. The presence of the support shoulder unambiguously indicates the direction of use of the epilating head as the shoulder should be placed upstream of the epilating window relative to the direction of displacement of the epilating head over the area to be epilated. In addition, the shoulder and its contact surface allow slight tension of the skin of the zone to be shaved due to the friction and slight traction induced by the shoulder and its contact surface when the epilation head moves against the skin of the zone to be shaved. be shaved. It should be remembered that the rotation, according to a parallel axis and confused with the axis of rotation of the epilating roller, the movable wicket and the shoulder that it brings, allows to keep the skin contact of the area to be epilated during the slight variations in the orientation of the waxing head relative to the skin of the area to be shaved, induced by the user. Thus, the shoulder and its contour surface are always parallel to the skin of the area to be shaved so that the slight tension of the latter is always maintained despite slight variations in the orientation of the epilating head. The wicket can thus be unique and not duplicated on the front and back of the roll, construction is simplified and operation is effective.

According to a feature of the invention aimed at optimizing the effect of the bearing shoulder, the contact surface is tangent to a Δ axis revolution cylinder within which the epilating roller is inserted.

According to another feature of the invention, the bearing shoulder as opposed to the movable longitudinal edge is a skin pull edge of the area to be shaved which is situated at a distance D from the axis Δ greater than the radius of the revolution cylinder of the hair. Δ axis within which the epilating roller is inserted. This dimensional feature of the support shoulder allows for better tensioning of the skin of the area to be shaved and better tracking of the angular orientation variations of the epilating head relative to the skin of the area to be shaved. According to an embodiment which aims to prevent the friction of the

tensile edge of the support shoulder is not too large and induces user discomfort, the support shoulder comprises in opposition to the movable longitudinal edge a support roller on the surface to be shaved, movable in rotation about a parallel Ω axis to the axis Δ. The rotation can be free. In order to modulate the skin tension of the area to be shaved, the rotation of the support roll may eventually be braked.

In one embodiment of this embodiment, the support roll axis eixo is located at a distance D 'from the axis Δ greater than the radius of the axis revolution cylinder Δ within which the epilating roller is inserted.

According to a feature of the invention, the movable wicket is joined to the angular sector defining devices to ensure a change in the position of the angular sectors with respect to the epilating head as a function of the orientation of the movable wicket. Thus, the development of the opening and closing sequences of the forceps is always optimal despite variations in the inclination of the box or head relative to the skin of the area to be shaved. According to another feature of the invention, the recording device

Electric hair removal comprises at least one removable cap intended to be fixed over the moving head of the hair removal head to cover part of the hair removal window and to define a reduced hair removal window. Reduced depilation window allows you to perform the most accurate depilation operations when using the uncapped depilation window. Reducing the size of the epilating window further reduces the surface of the epilating roller in contact with the hair so that the full epilating force is only available for the area defined by the reduced epilating window. This zone will be used on non-flat skin surfaces (armpits, groin ...)

According to one embodiment of this feature, the reduced epilating window is offset laterally with respect to an average plane of the epilating roller, the average plane being perpendicular to the axis Δ of rotation of the roller.

According to a variant of this embodiment, the living lid is adapted to be fixed to the movable wicket in two positions so that, in a first position, it places the reduced window to the left of the medium plane and, in a second position, it places the reduced window to the right of the midplane. This reduces the spacious occupancy of the different accessories to be mounted on the epilator.

According to another embodiment of this feature, the reduced epilation window is centered with respect to an average plane of the epilating roller, the average plane being perpendicular to the axis Δ of rotation of the roller. According to the invention, the epilating head can be fixed relative to

or, conversely, be movable in rotation relative to the housing along an axis of rotation Δ 'parallel to the axis Δ of rotation of the roller.

Still according to the invention the epilating head can be permanently fixed and even integrated to the box or on the contrary the epilating head can be removably fixed on the box to allow disassembly of the epilating head with views, for example , to ensure its cleanliness.

It will be understood that the different features, variants and embodiments of the invention may be associated with each other in various combinations insofar as they are not incompatible or exclusive of one another.

In addition, several other features of the invention have emerged from the accompanying description made with reference to the drawings illustrating non-limiting embodiments of an electric hair removal apparatus according to the invention.

Figure 1 is a schematic perspective view of an electric hair removal apparatus according to the invention. Figures 2 and 3 are an elevation of the partially detached side view of the apparatus illustrated in Figure 1, Figure 3 depicting the apparatus operating against the skin.

Figure 4 is a schematic view of a removable lid, the decentralized window, intended to be fitted over the movable shutter of the

electric hair removal illustrated in figure 1.

Figure 5 is a partial schematic view showing the lid shown in Figure 4 adapted over the movable wicket.

Figure 6 is a schematic perspective view of another removable lid, the decentralized window, to be fitted over the movable shutter of the apparatus.

electric hair removal illustrated in figure 1.

Figures 7 and 8 are partial views showing the removable cap shown in Figure 5 adapted in two different positions on the movable wicker of the hair removal apparatus.

-Figure 9 is an elevation of the side view of another form of

embodiment of a shaving apparatus according to the invention whose shaving head is pivoted.

An electric and mechanical hair removal device according to the invention as illustrated in figures 1 and 2 comprises a hollow box, designed in its assembly by reference 1, which consists of two half-shells 2 and 3 which together define On the one hand, the outer surfaces of the epilator have a gripping zone and, on the other, a containment and maintenance box for the different constitutive functional elements of the epilator. Thus, housing 1 comprises an electric motor 4 associated with the rotary motion transmission devices 5 of motor output 4. According to the illustrated example, the transmission devices comprise a set of shafts parallel to the shaft engine speed.

The box 1 is equipped with a hair removal head 10 comprising a hollow body 11 enclosing a hair removal chamber 12 within which a hair removal roller 13 is disposed at the level of a window 14 disposed on the hollow body 11. The epilation 13 is rotatable about itself by an axis Δ and is driven in rotation via the drive or transmission devices 5 by the electric motor 4. The epilation roller 13 comprises at its periphery a series of tweezers that opens and closes as the roller rotates. In order for the tweezers to be open as they begin to emerge at the epilation window level 14 and close when they emerge just before exiting the epilation window 14, the epilation head 10 comprises sector defining devices 15 opening O and closing F angles. Angular sector defining devices 15 and F are, for example, formed of one or more meats associated with the adapted meat paths. The embodiment of the tweezers as well as the angular sector defining devices 15 and F are well known to the person skilled in the art and therefore need no further description.

As stated above, the epilating roller 13 emerge at the level of the window 14 disposed on the body 11 of the epilating head 10. According to the illustrated example, the window 14 is delimited on one side by two parallel longitudinal edges 20 and 21 to each other and to the axis of rotation Δ of the roll 13 and, on the other hand, to two transverse edges 22 and 23 which are parallel to one another and have an arcuate shape which is contained in the planes perpendicular to the axis of rotation Δ. One of the longitudinal edges, here the bottom edge 20, is fixed being formed either by a fixed edge of the epilating head 10, or by a fixed edge of the box 1. According to the invention, the other longitudinal edge, here the upper edge 21 is moveable being formed by a movable wicket 25 rotating about the axis Δ. The movable wicket 25 comprises a bearing shoulder 26 extending along the movable longitudinal edge 21 opposite the depilation window 14. The shoulder 26 then defines a skin-contacting surface S of the area to be depilated. The contact surface S defined by shoulder 26 is preferably tangent to a revolution cylinder C of axis Δ into which the epilating roller 13 is inserted.

The shaving apparatus thus constituted is operated as follows. After starting the electric motor 4, the user places the epilating head 10 against the skin P of the area to be depilated as shown in Figure 3. The user moves the applied head against the skin P towards the arrow Fl so that the shoulder 26 is upstream of window 14 at which the epilating roller 13 emerges. The shoulder 26 and its surface S then assure a slight tension of the skin contribui, which contributes to raising the hair and facilitating its gripping and extraction. by the tweezers of the epilating roller 13 which is in contact with the skin P at window level 14. As the wicket 25 and the shoulder 26, which it brings, are movable around the axis of rotation Δ, they can monitor the IEE oscillations of box 1, indicated by the arrow F2, induced by the user in the course of the removal of the hair removal device. Thus, the shoulder 26 and the epilating roller 13 are always in contact with the skin P of the area to be shaved. In order to prevent friction of the edge of the abutment shoulder 26 situated opposite the movable edge 21 from being too large and inducing user discomfort, the abutment 26 comprises, according to the illustrated embodiment, opposite the edge. 21, a movable roller 30 rotating about an axis Ω is located at a distance D 'from the axis Δ greater than the radius R of the revolution cylinder C within which the epilating roller 13 is inserted. ensure a good leverage effect to ensure that the wicket 25 has a good monitoring of the skin surface P of the area to be shaved. The backing roller 30 may extend over the full length of the epilating roller or epilation window, as illustrated in FIG. 1. Alternatively, it may extend over a portion of the length of the epilating roller or epilation window. In this case, it is advantageously arranged in the middle of the length. In order to ensure the most practicable extraction of hair from the

In the area to be shaved whatever the inclination of the housing 1 or head 10 with respect to the skin móvel, the movable wicket 25 is preferably attached to the opening and closing angle defining devices 15 of the tweezers. Thus, the defining devices 15 are movable in rotation about the Δ axis and follow the variations in the inclination of the box or the hair removal head relative to the skin of the area to be shaved.

In order to enable hair removal operations which require greater precision than can be achieved by means of the hair removal apparatus as described above, the invention provides for the possibility of operating at least one removable cap 35 such as 4 and intended for temporary attachment to the wicket 25, the removable lid 35 partially closes at least the epilation window 14 so that the accessible epilation head portion 13 only appears at the level of the reduced window 36. According to the illustrated example, window 36 is substantially centered on a medium plane M of the epilating head 10 or epilating roller 13 perpendicular to the axis Δ.

The invention also provides for the possibility of actuating a second lid 37 to be removably fitted over the wicket 25 in two positions. The second removable cap 37 differs from that described above in that it comprises a laterally offset reduced epilation window 38. Thus, when the second removable lid 37 is fitted in a first position, shown in Figure 7, on the movable shutter 25, the reduced depilation window 38 is fitted, on the movable shutter 25, the second position of the shrink window 38 is located. right of the middle plane as shown in figure 8.

It should be noted that, according to the example illustrated and described above, the epilating head 10 is removably fitted over the housing 1 and can be separated by pressing a button 39 accessible at one side of the housing. 1. It should be understood that according to the invention the epilating head could be integrated into the box or fixed to the box 1 permanently without being demountable.

According to the illustrated example described above, the orientation of the

The epilating head 10 relative to the box 1 is fixed. However, such an embodiment is not strictly necessary for carrying out a hair removal apparatus according to the invention. Thus, Figure 9 shows an embodiment according to which the epilating head 10 is movable relative to the housing 1 along an axis Δ 'parallel to the axis Δ of rotation of the epilating roller 13. Thus, the head 10 may oscillate around the Δ 'axis to better follow the skin of the area to be shaved. According to this embodiment, the movable wicket 25 does not comprise the roller and opposite the movable edge 21 has a pull edge 41 of the skin of the area to be shaved. The traction edge is then located at a distance D from the axis Δ greater than the radius R of the revolution cylinder into which the epilating roller 13 is inserted. This feature ensures a good leverage effect to ensure that the wicket 25 has good monitoring the skin surface of the area to be shaved.

It should be understood that various other modifications may be brought to the invention within the framework of the appended claims.

Claims (12)

1. Electric hair removal apparatus comprising: - a box (1) comprising an electric motor (4) associated with the transmission devices (5), - a hair removal head (10) which is attached to the box (1) and which comprises: - a hollow body (11) enclosing a depilation chamber (12) open at the level of a depilation window (14) comprising two parallel straight longitudinal edges (20, 21) and two arched transverse edges (22,23 ), - a shaving roller (13) which: - is arranged inside the shaving chamber (12) so as to surface at the level of the shaving window (14), - is driven by rotation of the Δ axis by the drive devices. (5), the axis Δ being parallel to the longitudinal edges (20, 21), - comprises a series of tweezers which open and close as the roller (13) rotates about the axis Δ, - clamping devices (15) definition of the angular sectors around the Δ axis, the opening and closing of characterized in that the epilating head (10) comprises a movable wicket (25) rotating said axis Δ defining at least one movable longitudinal edge (21) of the epilation window (14) and comprising a support shoulder (26) ) on the area to be shaved extending the movable longitudinal edge (21) as opposed to the depilation window (14) and defining a skin contact surface (S) in the area to be depilated. Electric hair removal device according to claim 1, characterized in that the contact surface (S) is tangent to a Δ axis revolution cylinder (C) into which the hair removal roller (13) is inserted. Electric hair removal device according to any one of claims 1 to 2, characterized in that the support shoulder (26) has, as opposed to the movable longitudinal edge (21), a skin traction edge (41) of the area to be removed. which is situated at a distance (D) from the axis Δ greater than the radius (R) of the revolution cylinder (C) of the axis Δ within which the epilating roller (13) is inserted. Electric hair removal device according to any one of claims 1 to 2, characterized in that the shoulder (26) as opposed to the movable longitudinal edge, a bearing roller (30), on the surface to be shaved, movable rotating about an axis Ω parallel to the axis Δ. Electric hair removal device according to claim 4, characterized in that the support roller axis Ω (30) is situated at a distance D 'from the axis Δ greater than the radius R of the axis revolution cylinder (C) Δ at inside which the hair removal roller is inserted. Electric hair removal device according to any one of claims 1 to 5, characterized in that the movable wicket (25) is coupled to the angular sector defining devices (15) so as to ensure a change in the position of the angular sectors with respect to the epilating head (10) according to the orientation of the movable wicket (25). Electric hair removal device according to any one of claims 1 to 6, characterized in that it comprises at least one removable cap (35, 37) for attachment to the movable wicker (25) of the hair removal head (10) for partly close the depilation window and set a reduced depilation window (36, 38). Electric hair removal device according to claim 7, characterized in that the reduced hair removal window is displaced laterally with respect to an average plane (M) of the hair removal roller (13), the medium plane (M) being perpendicular to the axis. Roll rotation Δ. Electric hair removal device according to claim 8, characterized in that the removable lid (37) is adapted to be fixed on the movable wicket (25) in two positions so that, in a first position, the reduced window (38) ) to the left of the midplane (M) and, in a second position, place the reduced window (38) to the right of the midplane (M). Electric hair removal device according to claim 7, characterized in that the short hair removal window (36) is centered with respect to a median plane (M) of the hair removal roller (13), the medium plane (M) being perpendicular to it. to the axis Δ of rotation of the roller. Electric epilating device according to any one of claims 1 to 10, characterized in that the epilating head (10) is rotatable with respect to the housing (1) along an axis of rotation Δ 'parallel to the axis of rotation Δ. of the roll. Electric hair removal device according to any one of claims 1 to 11, characterized in that the hair removal head (10) is removably attached to the housing (1).