Hair treatment device.

Abstract

Hair treatment device. The invention relates to a hair treatment device (2), in particular for curling and / or straightening hair by movement along a strand of hair from root to tip, comprising: - at least one heated hair treatment structure configured to come into contact with the hair during hair treatment by at least one treatment plate (16, 17; 16a, 16b, 17a, 17b), - a combing member (22) configured to come into contact with the hair during hair treatment, the combing member (22) being pivotable about a pivot axis P in at least one direction of pivoting under the effect of a tangential contact force exerted by a strand of hair moving through the comb on the latter in at least one direction of movement of the device over the hair. Figure for the abstract: Fig. 1

Description

Title of the invention: Hair treatment device.

[0001] The present invention relates to hair treatment devices, in particular for straightening and / or curling hair, as well as treatment methods using such devices. technical field

[0002] Many devices of this type, sometimes still called straightening irons or straighteners, have already been proposed, for the treatment of hair with or without application of a hair product.

[0003] Hair straighteners typically consist of two arms connected by a hinge, allowing them to be opened and closed, and at least one heating element located on one of the arms. When styling a section of hair, the hair is placed between the two arms in the open position, and then the arms are manually closed around the hair. The hair is then subjected to the heat emitted by the heating element(s) until the arms are opened and the hair is removed.

[0004] It is known that there are straightening and / or curling devices comprising a comb between the two jaws for combing the hair during the straightening or curling of the hair.

[0005] Straightening and / or curling devices are used by inserting a strand of hair between the jaws or wrapping it at least partially around the device and moving the device along the strand of hair. It is important that the strand of hair slides smoothly during the treatment to ensure even coverage and to minimize damage to the hair by keeping part of it on a hot surface for too long.

[0006] The presence of a comb on the device, particularly between the jaws, allows for better hair distribution and thus improved treatment performance. However, with a comb on the device, there is a risk that the hair may become knotted and, if it catches on a tooth of the comb, block the device's movement along the hair strand. The user then becomes stuck and often has to stop the straightening treatment to detangle the hair before resuming. This causes significant discomfort for the user. Furthermore, a stoppage of the device's movement over the hair can lead to localized overheating of the hair, which can damage it.

[0007] Furthermore, the presence of a comb in contact with the hair for combing may only be desirable for the treatment under certain conditions, in particular in a direction of use of the device only.

[0008] There is therefore a need to improve hair treatment devices, particularly straightening and / or curling devices incorporating a comb, specifically to overcome this problem and thus make the treatment both effective and pleasant. Description of the invention

[0009] The invention addresses this need by means of a hair treatment device, in particular for curling and / or straightening hair by moving along a strand of hair from a root to a tip, comprising - at least one heated hair treatment structure configured to come into contact with the hair during hair treatment by at least one treatment plate, - a combing organ configured to come into contact with the hair during hair treatment, the combing organ being pivotable around a pivot axis in at least one direction of pivoting under the effect of a tangential contact force exerted by a strand of hair moving through the comb on the latter in at least one direction of movement of the device on the hair.

[0010] As explained previously, the combing organ allows the hair to be distributed along the application organ, which allows for more uniform treatment and for the hair to be combed during the treatment.

[0011] According to a first embodiment, the tangential contact force is a frictional force exerted by the hair moving relative to the comb. Such a configuration allows, in particular, as will be explained below, for the comb to pivot according to the frictional force exerted by the hair as it passes through the comb. It is thus possible to provide for a direction of use (and therefore of relative hair movement) in which the comb will pivot (for example, leading to its deactivation) and a direction in which the comb will remain in the combing position.

[0012] According to a second variant, the tangential contact force is a force exerted by the hair against the teeth of the comb. This occurs particularly when there is a knot in the hair, especially one whose dimensions exceed the spacing between the teeth of the comb. Thus, the knot of hair comes to rest against the comb and exerts a contact force sufficient to allow the comb to pivot around its axis, thereby enabling at least partial removal of the hair. In such a case, the detangling function normally performed by the comb is forgone in order to avoid the problems mentioned above (hot spot, pain when pulling on large knots).

[0013] The two variants described above can be combined in the same device according to a third variant. In this third variant, there are two forces Tangential contact forces vary depending on the direction of use. The first tangential contact force is a friction force exerted by the hair moving relative to the comb in the first direction of movement of the device along the hair strand. The second tangential contact force is a resistance force exerted by the hair against the teeth of the comb in the second direction of movement of the device along the hair strand.

[0014] This makes it possible to use the device on hair that tends to tangle easily, which would not be possible with a comb device without this rotation or would be very uncomfortable for the user.

[0015] This can also, or according to a variant, allow the combing element to be automatically retracted by pivoting when the device is used in a direction in which it is not necessary for the treatment. It then allows the hair to pass through without engaging with it during the treatment in one direction of movement. However, in the other direction of use, it engages with the hair, with or without hair escaping under certain threshold conditions. Combing organ

[0016] Preferably, the combing member can be configured to pivot automatically around the pivot axis in at least one direction of pivoting when the tangential contact force exceeds a predetermined threshold.

[0017] The combing member can be configured to pivot automatically around the pivot axis in a first direction when the tangential contact force exerted on it exceeds a first predetermined threshold in said first direction, and to pivot automatically around the pivot axis in a second direction when the tangential contact force exerted on it exceeds a second predetermined threshold in the second direction.

[0018] The first and second predetermined thresholds may be identical or different. At least one of the first or second predetermined thresholds may indicate the presence of a knot in the hair. This predetermined threshold may be configured to correspond to a tension in the hair strand between IN and 10N, in particular between 2N and 6N, for example around 4N. The predetermined threshold may depend on the comb configuration, in particular the shape, length, and spacing of the teeth, and the user's tolerance to this tension.

[0019] Said predetermined threshold can be configured to correspond to a torque at the axis of rotation between 6x10 3Nm and 6x10 2Nm, in particular between 1x10 2Nm and 5x10 2Nm, for example around 2.4x10 2Nm.

[0020] The device may include a manual adjustment mechanism for the predetermined threshold, allowing the user to adapt this threshold between two values ​​according to their tolerance. At least one of the first or second predetermined thresholds may be representative of a hair strand thickness, in particular, based on the spacing of the comb teeth.

[0021] Preferably, the first and second predetermined thresholds are identical and significant of the presence of a knot on the hair which comes into contact with the combing organ.

[0022] Alternatively, the combing member is configured to pivot automatically around the pivot axis in one direction as soon as a tangential contact force characteristic of use in said direction is exerted in said direction, i.e. as soon as the tangential contact force is characteristic of a friction force exerted by the hair greater than a predetermined threshold corresponding to the normal use of the device on a strand of hair in said direction.

[0023] The combing member can be configured to be pivotable only in one direction, the combing member being blocked from pivoting in the other direction.

[0024] Alternatively, the combing member is configured to pivot in both directions with different predetermined first and second thresholds. The first predetermined threshold is configured so that the combing member pivots as soon as a tangential contact force characteristic of use is exerted in the first direction, i.e., as soon as the tangential contact force is characteristic of a friction force exerted by the hair exceeding a predetermined threshold corresponding to the normal use of the device on a strand of hair. The second predetermined threshold may indicate the presence of a knot in the hair that grips the combing member and is therefore higher than the first predetermined threshold, particularly as described above.

[0025] Preferably, the combing member is elongated along the pivot axis.

[0026] Preferably, the combing organ comprises a core, in particular cylindrical, and at minus one row of teeth extending along the pivot axis on the heart.

[0027] The combing member may comprise one or more rows of teeth extending along the pivot axis, preferably less than six rows of teeth.

[0028] The combing element may have one or more angular combing positions around the pivot axis. Preferably, in the angular combing position(s), the row(s) of teeth extend over the device perpendicularly to the hair extension axis at the level of the combing element, in particular substantially perpendicular to the nearest portion of the treatment sole.

[0029] The combing member may have one or more pivoted angular positions, in particular allowing at least partial escape of hair in the event of a knot, around the pivot axis. Preferably, in the pivoted angular position(s), the row(s) of teeth protruding from the surface of the device form an angle with hair at the level of the combing organ other than a right angle, in particular an angle with the nearest portion of the treatment sole other than a right angle.

[0030] In at least one direction of movement of the device, the combing element can be configured to pivot from a first angular combing position to an adjacent second angular combing position when the tangential contact force exerted on it in that direction exceeds the predetermined threshold. This pivoting of the combing element makes it possible, in particular, to release the knots of the row of teeth engaged with the hair in the first angular combing position and to have the next portion of hair engaged with the teeth of the row of teeth engaged with the hair in the second angular combing position. Between the two angular combing positions, the combing element allows the hair to slide along the combing element, in particular by passing into a pivoted angular position that releases the moving hair or by accompanying the movement of the hair on the combing element through rotation.

[0031] In at least one direction of movement of the device, the combing element can be configured to pivot from a combing angular position to a pivoted angular position in which the comb teeth are folded back relative to the hair, and the hair preferably comes into contact with a toothless surface of the comb during the movement of the device over the hair strand. This allows the hair to move freely without being caught in the comb during use of the device. Disengageable retention system

[0032] The device may include a disengageable holding system for the combing element, particularly in the combing angular position(s). The disengageable holding system may be configured to hold the combing element in the combing angular position(s) as long as the tangential contact force applied to the combing element is below the predetermined threshold, and to release the combing element from rotation around the pivot axis when the tangential contact force applied to the combing element exceeds the predetermined threshold. This allows for a self-disengaging holding system when the predetermined threshold is exceeded. This can be in both directions of the tangential contact force with the same predetermined thresholds, or with different predetermined thresholds, or in only one direction of the tangential contact force.

[0033] One of the disengageable retaining system and the combing member, preferably the disengageable retaining system, may include an elastic disengagement member configured to cooperate with complementary disengagement reliefs of the other of the The disengageable retaining system and the combing element, preferably the combing element itself. The elastic disengagement element can be configured to assume a locking configuration with the complementary disengagement ridges in the combing angular position(s) and to transition to a release configuration when the tangential contact force applied to the combing element exceeds the predetermined threshold and in the pivoted angular position(s). The elastic disengagement element may include a projecting pin mounted on an elastic element, such as a spring, configured to cooperate with the complementary disengagement ridges, the latter being recessed.

[0034] The combing member may include a longitudinal extension at the distal or proximal end without teeth and including the complementary disengagement relief(s).

[0035] The device may include a predetermined threshold adjustment system for manually varying the predetermined threshold. The predetermined threshold adjustment system may include a knob for adjusting the tangential contact force threshold at which the elastic disengagement member moves into the release configuration. The knob may be configured to adjust the compression of the elastic element, particularly the spring, when the pin is engaged in the recessed relief of the combing member.

[0036] The device may include an elastic return element for maintaining the combing element in at least one predefined angular position, in particular the combing angular position(s). Such an elastic return element allows, in particular, for the combing angular position(s) to be stable and the pivoted angular position(s) to be at least partially unstable. The predetermined threshold adjustment system may include the elastic return element or be separate from it.

[0037] Alternatively or in addition, the device may include a friction element for the combing element configured to limit the rotation of the combing element. The friction element may be configured to allow rotation of the combing element when a tangential contact force exceeding the predetermined threshold is applied to the combing element.

[0038] Alternatively, the combing element can be configured to pivot at the user's command. The command can be a mechanical action of manually rotating the combing element or the actuation of a button or sensor that triggers the rotation of the combing element.

[0039] Alternatively, the disengageable retaining system and the elastic return member are formed by an elastic system, in particular a torsion spring, configured so that the combing member can pivot in the direction of pivoting under the effect the action of the hair to allow the hair to pass through during the movement of the device in one direction and to be blocked in the other direction to grip the hair during the movement of the device in the other direction.

[0040] The device may include a housing for receiving the combing element. The housing for the combing element may extend around the periphery of the heating treatment structure, particularly around the periphery of the treatment plate, or within the heating treatment structure, particularly within the treatment plate or between two treatment plates of the heating treatment structure. The housing for the combing element may extend within the heating structure. The heating structure may include an opening in the heating treatment plate forming the housing for the combing element or may include at least two treatment plates extending on either side of the housing for the combing element.

[0041] The combing element can be removed from its receiving housing. This allows the combing element to be changed to adapt it to the hair.

[0042] In angular combing position, the teeth preferably form projections relative to the adjacent treatment sole.

[0043] The teeth can be one piece and preferably made of the same material as the core. The combing organ can be made of the same material.

[0044] Preferably, the teeth of the tooth row are aligned with each other along the pivot axis. Alternatively, the teeth of the tooth row are arranged differently along the pivot axis; in particular, they may extend alternately on either side of the pivot axis in two alignments.

[0045] Preferably, the row of teeth extends longitudinally over more than 50%, and up to 100% of the length of the adjacent sole.

[0046] The combing element may be made of a plastic, ceramic, or metallic material.

[0047] The teeth may be flexible or, preferably, rigid.

[0048] The teeth can be pins with a circular or polygonal cross-section. Alternatively, the teeth are flattened, in particular along a flattening plane perpendicular to the pivot axis.

[0049] Preferably, the row or rows of teeth each have at least 2 teeth, better between 2 and 50 teeth, even better between 5 and 25 teeth.

[0050] Preferably, the row(s) of teeth comprise a repetition along the longitudinal axis of the row of a tooth pattern. The tooth pattern may comprise one or more teeth. In the case of a tooth pattern comprising several teeth, these teeth may or may not be identical to each other.

[0051] Preferably, the teeth protrude from the combing organ by a height of between 2 mm and 100 mm, better between 4 mm and 8 mm.

[0052] Preferably, the teeth in angular combing position protrude from the outer surface of the treatment sole at their level by a height between 1 mm and 9 mm, better between 3 mm and 7 mm. Device

[0053] Preferably, the device is a hair styling device, in particular for curling or straightening.

[0054] Preferably, the treatment device is elongated along a principal axis. Alternatively, the treatment device is of a different, non-elongated shape.

[0055] Preferably, the treatment device comprises a handpiece having a handle and a head. The handle facilitates gripping the device and allows the insertion of additional elements into the device, in particular a user interface.

[0056] The head of the processing device can be of any shape in cross-section. Preferably, the head of the processing device has a substantially polygonal shape in cross-section, in particular a substantially rectangular or square, or a substantially oval or circular shape. Other cross-sectional shapes are possible, such as a section with a polygonal contour on one side and a non-polygonal, in particular rounded, for example circular, contour on the other. Preferably, the head of the device is generally flattened in cross-section.

[0057] Preferably, the head of the device comprises the processing structure and the combing element. The pivot axis of the combing element can extend along the main axis of the device.

[0058] According to one embodiment, the device may comprise two jaws arranged opposite each other and articulated between a closed treatment configuration and an open hair engagement configuration between the jaws. At least one of the jaws may comprise the treatment plate of the heating treatment element opposite the other jaw in the closed jaw configuration. The heating treatment structure may comprise at least two hair treatment plates, each extending from one of the two jaws towards the other jaw, facing each other in the close jaw configuration, and configured to grip hair extending between the two jaws in the close jaw configuration.

[0059] One of the jaws may carry the combing element, in particular the jaw carrying the treatment sole of the heating treatment element. The housing for the combing element may be arranged on one of the jaws and open towards the other jaw. The other jaw may have a counter-support surface opposite it. of the combing mechanism, a hollow or recess in the jaw. The counter-support surface may be another comb, pivotable or not.

[0060] The teeth of the combing organ can extend between the jaws perpendicularly to a flat treatment surface between the jaws defined in particular by the treatment soles in angular combing position.

[0061] Each jaw can carry a single treatment sole or several treatment soles, in particular on one of the jaws, two treatment soles extending on either side of the combing member.

[0062] The heating treatment structure may include at least one heating element for heating at least one of the treatment pads. The heating treatment structure may include at least one heating element per jaw for heating at least one of the treatment pads carried by each jaw.

[0063] The treatment soles carried by the same jaw can be heated by individual heating elements or by the same heating element.

[0064] The heating element(s) may include, in particular be made up of, one or more thermal resistances or any other suitable means of heating.

[0065] The heating element(s) can be housed in housings in the corresponding jaw(s).

[0066] The heating element(s) may have an electrical power greater than or equal to 50W, or even 100W, 200W or 500W.

[0067] Preferably, when the device has two jaws connected to each other and capable of taking an open configuration for engaging the hair between them and a closed configuration for processing, the jaws extend to a distal end of the handle.

[0068] Each jaw can be carried by an arm, the two arms being connected to each other, notably by a joint at one of their ends, to assume the closed or open configuration of the jaws. Each of the two arms can include a half-handle on the side of the joint and one of the jaws on the side of the free end.

[0069] Preferably, the treatment pads have opposing surfaces of complementary shapes in their opposing areas, in particular substantially flat. Alternatively, the treatment pads are non-planar in their opposing areas, in particular curved, concave, or corrugated, with complementary shapes. For example, one pad has a generally concave surface opposite the other pad, and the other pad has a generally convex shape that conforms to the shape of the generally concave surface when the two pads are brought together.

[0070] Preferably, the treatment soles have external surfaces on their facing areas which are smooth, i.e. without raised or recessed reliefs.

[0071] Preferably, the treatment soles are, in front view, of substantially polygonal contour, in particular rectangular or square.

[0072] Preferably, the treatment soles are substantially of the same length and / or the same width.

[0073] Preferably, the treatment insoles are each elongated along the corresponding jaw, in particular along an axis parallel to a longitudinal axis of this jaw.

[0074] Preferably, at least one of the treatment soles, preferably all of the treatment soles, are made of a heat-conducting material.

[0075] At least one of the treatment soles, preferably both treatment soles, may be made of a material with good heat conductivity, the treatment soles being used with the device at a temperature, for example, above 50°C, preferably between 90°C and 230°C, advantageously between 180°C and 210°C. The treatment soles may be made of metal, preferably aluminum, in particular with anodizing or a paint or ceramic coating.

[0076] At least one of the treatment soles, preferably both treatment soles, may have a thermal conductivity of at least 20 Wm'.K1. Such conductivity allows rapid heating of the treatment sole(s) and efficient heat transfer to the hair extending between the two treatment soles.

[0077] The two treatment soles can be made of the same material.

[0078] The device may include a switch for switching on the heating element(s). For example, the switch may allow the heating element(s) to be energized, or a control circuit for the heating element(s) which, for example, regulates the temperature and supplies the heating element(s) in such a way as to maintain a set temperature.

[0079] The switch can be controlled by the user via a selector, for example a button with two or three positions.

[0080] The selector can also be used to vary the temperature of the heating element(s). The maximum temperature reached by the heating element(s) can thus be adapted to the type of hair being treated and / or the nature of the treatment to be performed. The same device can therefore be used to treat several types of hair.

[0081] The device according to the invention may include a power supply. For example, the power supply is provided by means of accumulators and / or batteries and / or by means of an electrical cable connected to a mains socket or to a mains adapter, in particular a power supply connected to the base, the base being electrically connected to the handpiece.

[0082] The power supply can in particular be used to power the heating element(s), directly or indirectly via a control circuit.

[0083] The device, in particular the handpiece, may include at least one external processing element having an external processing surface configured to come into contact with a part of the hair strand during the treatment, the external processing surface being in particular thermal, in particular being a heating plate.

[0084] In an embodiment independent of the jaw structure or in combination with it, particularly for looping, a heated external processing surface extends over one of the front and rear faces. The external processing surface may form the processing base of the heated processing structure or an additional processing base. The combing element may extend over the external surface of the device within a recess in the external processing surface in this case.

[0085] The external processing surface allows in particular for hair curling by wrapping the hair around the device, in particular the handpiece and / or around one or each jaw. simple comb

[0086] The combing organ may comprise a single row of teeth.

[0087] The row of teeth may have on the combing member an angular extent less than or equal to 180°, in particular less than or equal to 90° preferably 10 to 60°.

[0088] The combing element can then be configured so that the teeth extend, in the single angular combing position, perpendicular to the adjacent treatment foot(s), particularly those of the same jaw, and so that the teeth form, in the pivoted angular positions, an angle between 30° and 180° with the perpendicular to the adjacent treatment foot(s), particularly those of the same jaw, on one side or the other depending on the direction of use of the device. The device preferably includes, in this case, an elastic return element in the angular combing position. The device may include the disengageable retention system as described above and / or a friction element.

[0089] The combing member can be disengaged with the same threshold in both directions. Thus, when the hair forms a knot that gets caught on a tooth of the combing member, the contact force exerted tangentially to the member of When the combing element exceeds the threshold, it pivots to one of the pivoted angular positions, either to the left or the other depending on the direction of movement of the device, to allow the knot to pass. As soon as the knot has passed, the combing element returns to its combing angular position.

[0090] Alternatively, the combing element can be disengaged with different first and second thresholds, or only in one direction as described above, with at least one predetermined threshold characteristic of use on hair in a specific direction, such that the combing element assumes the pivoted angular position as soon as the device is used on hair in the corresponding direction. In this case, the first threshold can be such that the combing element pivots under the action of the hair as soon as the device is used on hair with a displacement on the hair such that the tangential contact force exerted on the comb is in the first direction, i.e., as soon as the tangential contact force in the first direction is characteristic of a friction force exerted by the hair exceeding a determined threshold corresponding to the normal use of the device on a strand of hair.The extent of rotation can be such that the hair is no longer in contact with the combing tool during treatment, particularly during straightening and / or curling. It can also depend on the treatment applied.

[0091] The device, in particular the jaw carrying the combing element, may include a retractable housing for the combing element in a pivoted angular position. This allows the combing element to pivot through a greater angular range without engaging with the hair in at least one direction of rotation, particularly in the case of hair wrapping around the jaw with a force applied to the combing element in the first direction. This allows the combing element to retract into the housing during treatment to allow the hair to pass through without being caught in the first direction.

[0092] The combing member preferably includes, in these cases, an elastic return member configured to return the combing member to the angular combing position after the treatment.

[0093] In these cases, the combing element is preferably lateral to the treatment plate(s) on the jaw. The device may include two combing elements extending on either side of the treatment plate(s) and configured to pivot in opposite initial directions with respective predetermined initial thresholds to allow pivoting as soon as the device is used in opposite directions. Thus, only one of the two combing elements remains in contact with the hair, preferably the combing element upstream of the treatment plate(s) in the direction of use of the device, and the other combing organ pivots into a pivoted angular position so as not to catch on the hair. Star comb

[0094] The combing member may comprise a plurality of rows of teeth extending along the pivot axis, preferably less than six rows of teeth.

[0095] In the case of a plurality of tooth rows, they can extend along the pivot axis of the core surface at different circumferential positions on the core surface, notably in a star shape around the core. The tooth rows can be equally distributed around the core.

[0096] The rows of teeth can be arranged around the star-shaped combing member, in particular equidistant around the combing member. The combing member can comprise n rows of teeth forming an angle of 360 / n° with each other, n preferably being between 3 and 6.

[0097] Preferably, the rows of teeth are identical to each other.

[0098] The teeth can each have a total angular extent less than or equal to 360 / n°.

[0099] The combing member may have as many angular combing positions as there are rows of teeth and is configured so that, in the angular combing positions, the teeth of one of the rows extend perpendicularly to the adjacent treatment sole(s), particularly those of the same jaw, and so that, in the pivoted angular positions, the teeth of at least one row, particularly at least two adjacent rows, form an angle of 360 / (2n)° with the perpendicular to the adjacent treatment sole(s), particularly those of the same jaw, on one side or the other depending on the direction of use of the device. The device may include the disengageable holding system as described above and / or a friction member.Thus, when a knot in the hair becomes caught on a tooth of the combing element, the force exerted tangentially on the combing element exceeds the threshold, and the combing element pivots to a combing angular position of another row of teeth, passing through the pivoted or escape angular position between the two rows of teeth. The knot is then released, and the teeth of the next row, in the direction of movement of the device, come to be positioned at the combing angular position. Additional processing organ

[0100] The device may include an additional processing element, in particular selected from the group consisting of steam applicators, cosmetic product applicators, pivoting or non-pivoting combs, and a combination thereof. Method

[0101] The invention also relates, according to another aspect, to a method of treating hair, in particular straightening and / or curling, using the device according to the invention, comprising treating a strand of hair using the device as described above, in particular inserting a strand of hair between the jaws in a spread configuration, closing the jaws on the hair to pinch the hair between the treatment plates and moving the device along the strand of hair, the jaws remaining in a close configuration.

[0102] The method may include pivoting the combing member when the tangential force exerted on the combing member is in at least one direction and is greater than a predetermined threshold in said direction.

[0103] The pivoting can take place in said direction when the movement of the device on the hair strand is blocked by the gripping of a knot on the comb.

[0104] The pivoting can take place as soon as the device is used so that the tangential force on the combing member is in one direction.

[0105] The characteristics of the device described above apply to the process in combination or individually to one another.

[0106] The process can be repeated several times for the complete treatment of part or all of the hair.

[0107] The process may include a treatment of the hair on an internal treatment surface of the device, in particular thermal, in particular a heating plate.

[0108] The process may include a treatment of the hair on an external treatment surface of the device, in particular thermal, in particular a heating plate.

[0109] The process may include an additional treatment, in particular an application of steam, an application of cosmetic product and / or combing. Brief description of the drawings

[0110] [Fig-1] represents a schematic perspective view of an example of a device according to the invention,

[0111] [Fig.2] represents a side view of the device of [Fig.1],

[0112] [Fig.3] represents a longitudinal section of the device of [Fig.1],

[0113] [Fig.4] is a view of a detail according to IV of [Fig.3],

[0114] [Fig.5] is a perspective view of an example of a combing organ,

[0115] [Fig.6] is a cross-sectional view of the device of [Fig.1] at the level of the disengageable retaining system,

[0116] [Fig.7] is a cross-sectional view of the device of [Fig.1] at the level of teeth in an angular hair-combing position,

[0117] [Fig.8] is a cross-sectional view of the device of [Fig.7] at the level of the teeth in a pivoted angular position

[0118] [Fig.9] is a cross-sectional view of a variant of the device with an organ combing in an angular hair-combing position,

[0119] [Fig. 10] is a cross-sectional view of the device of [Fig. 9] at the level in a pivoted angular position, and

[0120] [Fig. 11] is a cross-sectional view of a variant of the device with a combing member in an angular hair-combing position,

[0121] [Fig. 12] is a cross-sectional view of a variant of the device with a combing member in an angular hair-combing position,

[0122] [Fig. 13] is a variant of a combing organ in cross-section,

[0123] [Fig.14A] and [Fig.14B] represent a variant of the device with a combing member locked in one direction of pivoting and pivoting in the other, used on the hair in a first and second direction respectively, and

[0124] [Fig.15A] and [Fig.15B] represent a variant of the device with two combing members locked in one direction of pivoting and pivoting in the other used on the hair for straightening and for curling respectively. Detailed description

[0125] In the following description, identical elements or elements with identical functions bear the same reference numeral. For the sake of brevity, they are not described opposite each figure; only the differences between the embodiments are described.

[0126] Figures 1 to 8 illustrate an example of a hair treatment device 2, in particular for curling and / or straightening hair.

[0127] This device 2 has two jaws 3 and 4 movable relative to each other between a spread configuration (not shown) for introducing a strand of hair between them and a close processing configuration, illustrated in [Fig.1].

[0128] The jaws 3 and 4 are carried by respective upper arms 5 and lower arms 6, which are, in the example considered, connected to each other at one of their ends by a joint 8, the device 2 thus forming a clamp.

[0129] Arms 5 and 6 define, between the joint 8 and the jaws 3 and 4, respective half-handles 10 and 11 on which the user can press to bring the jaws 3 and 4 together and thus pinch the hair extending between the two jaws.

[0130] The width of arms 5 and 6 at half-handles 10 and 11 is less than that at jaws 3 and 4. Alternatively, the widths could be substantially identical, or even the width of arms 5 and 6 at the level of half-handles 10 and 11 could be greater than that at the level of jaws 3 and 4.

[0131] Jaws 3 and 4 each have a convex outer surface and a substantially flat inner surface.

[0132] An elastic return member (not apparent) is preferably provided to return the jaws 3 and 4 in the spread configuration, this elastic return member being for example a spring arranged around an axis of the joint 8.

[0133] The invention is not limited to a particular way of connecting the arms 5 and 6 together, and the jaws 3 and 4 can be made mobile in other ways without departing from the scope of the present invention. However, the presence of a joint is largely preferred for the ergonomic advantages it provides.

[0134] The device 2 extends, for example, along a principal axis X. The device 2 includes a cord 18 designed to supply the energy necessary for the device's operation. The cord 18 can thus be an electrical cord designed to connect the device to the electrical network. Without departing from the scope of the invention, the cord could also be a fluidic cord designed to supply the device with fluid (water, for example).

[0135] The device may include an electric battery, thus avoiding the need for an electrical cord to connect the device to the electrical network.

[0136] A user interface, not shown in the figures, may be present on device 2 to allow the user to control the operation of the device.

[0137] The device 2 comprises a heating treatment structure 14 having on each jaw 3 and 4 two internal hair heating treatment pads 16a and 16b and 17a and 17b respectively facing each other in pairs in a close configuration of the jaws 3 and 4 so as to define between them a heated treatment zone in a close configuration of the two jaws 3 and 4. The internal treatment pads 16a and 17a and respectively 16b and 17b are, for example, configured to pinch between each other the hair extending between the two jaws 3 and 4 in a close configuration of the two jaws 3 and 4.

[0138] The treatment soles 16a, 16b, 17a and 17b are preferably made of a conductive material, in particular iron, aluminum, titanium, stainless steel, graphite, or ceramic. The heat-conducting material may have a thermal conductivity of at least 20 W / m·K. Alternatively, only part of the treatment soles is heat-conducting, the other treatment sole(s) forming a counter-support surface.

[0139] Each treatment sole 16a, 16b, 17a and 17b is associated with at least one heating element not shown in the jaw configured to heat the treatment sole.

[0140] In an alternative not shown, a single jaw 3 or 4 may incorporate one or more heating elements, one or both of the treatment pads of a jaw 3 or 4 being heated by one or two heating elements. For example, the heating treatment structure may include a single heating element to heat both treatment pads of one of the two jaws, the heating element extending under both treatment pads. Alternatively, the heating treatment structure may include one heating element per treatment pad of one of the two jaws, each heating element extending under one of the treatment pads. The heating element(s) may be a heating element.

[0141] The treatment plates 16a, 16b, 17a and 17b have substantially flat hair contact surfaces, but this could be otherwise. They could, for example, have complementary wavy shapes or complementary curved shapes.

[0142] The treatment soles 16a, 16b, 17a and 17b and the heating elements are mounted on the jaws in a known manner.

[0143] In use, the treatment soles 16a, 16b, 17a and 17b can be heated to a temperature above 50°C, preferably between 90°C and 230°C.

[0144] The device 2 also includes, carried by the lower jaw 4 in a housing 20 between the two treatment plates 17a and 17b of the jaw 4, a combing member 22 pivotable about a pivot axis P parallel to the main axis X, thus allowing at least partial escape of the hair by pivoting about its pivot axis P during treatment. The combing member 22 is preferably elongated along the pivot axis P. The housing 20 has a shape and dimensions adapted to the rotation or pivoting of the combing member 22.

[0145] The illustrated combing member 22 comprises a substantially cylindrical core 25 and rows of teeth 28, here four rows of teeth 28, extending along the pivot axis P on the core 25. The rows of teeth 28 are arranged in a star pattern around the core 25. The invention is not limited to a particular number of tooth rows. However, the number of rows is preferably less than 8, and even better less than 6, to allow for efficient hair escape during the rotation of the combing member 22.

[0146] The rows of teeth may have an angular offset [3, visible on the [Fig.7], preferably approximately equal to 360 / n, n being the number of rows of teeth.

[0147] The rows of teeth can be identical, as illustrated. The 28 teeth of the rows of teeth of the same rank can be circumferentially aligned for all rows of teeth. In an alternative not illustrated, at least two rows of The teeth may be identical but offset from each other along the pivot axis P. Alternatively, at least two rows of teeth may be different.

[0148] In the illustrated example, the teeth 28 are substantially triangular in shape and flattened along a flattening plane transverse to the pivot axis P. The teeth 28 can extend at their base over an angular extent a less than or equal to the angular offset [3]. In the illustrated example, the angular extent a of the teeth is substantially equal to the angular offset [3, i.e., 360 / n. However, it could be otherwise, and the teeth could have the form of pins with a fine angular extent and a circular or polygonal cross-section, as illustrated in the variant of [Fig. 13].

[0149] The teeth 28 in the rows of teeth are all identical in the illustrated example and of the same height. However, this could be otherwise, and the teeth 28 could be of varying shapes and / or heights.

[0150] In the illustrated example, the combing element has teeth. However, the invention is not limited to teeth, although this is preferred, and the combing element 22 can be in the form of a brush with bristles.

[0151] In the illustrated example, the combing member 22 has a rod 29 extending in a longitudinal recess of the core 25 and configured to be received in corresponding recesses of the housing 20 to hold the combing member 22 in the housing 20. The core 25 may be rotatable about the rod 29, the rod 29 being fixedly mounted in the housing 20, or the core 25 may be fixedly mounted on the rod 29 and the rod 29 rotatable about the pivot axis P in the housing 20. In an alternative not shown, the combing member 22 does not have such a rod and the core 25 is solid. The core may then have longitudinal ends configured to be received in corresponding recesses of the housing 20.

[0152] The device may include, as illustrated in detail in Figures 3, 4, and 6, a disengageable retaining system 30 for holding the combing member 22 in certain predetermined angular positions when the tangential force exerted on the combing member, particularly on the teeth 28, is below a predetermined threshold, in particular corresponding to a tension on the hair of approximately 4 N or a torque at the axis of approximately 2.4 x 10⁻² Nm. In the illustrated example, the disengageable retaining system 30 includes an elastic disengageable member 31 on the jaw 4, and the combing member 22 includes a longitudinal extension without teeth 40 and having hollows 42 at its distal or proximal end, here at its distal end. However, it could be otherwise, and the elastic member could be supported by the combing member 22 and the hollows by the disengageable retaining system.The elastic disengagement member 31 includes a pin 32 mounted on an elastic element 34, here a spring. The pin 32 cooperates with the . hollows 42 to lock the combing member 22 in certain stable angular positions corresponding to the positions in which the hollows 42 are aligned with the pin 32. The pin 32 is held in the hollows 42 by the elastic element 34. The hollows 42 of the combing member 22 are preferably arranged along the pivot axis P so that the stable angular positions are combing angular positions in which the teeth 28 of the rows of teeth extend between the jaws perpendicular to the contact surfaces of the treatment soles 17a and 17b as illustrated in [Fig.7]. When the pin 32 extends between the hollows 42, the combing member 22 is in an unstable angular position and rotates until the pin 32 lodges again in a hollow 42. To remove the pin 32 from a hollow, the tangential force to be exerted corresponds to the predetermined threshold.Preferably, the extension 40 has as many hollows 42 as there are rows of teeth, and each hollow 42 corresponds to a positioning of the teeth 28 of said row of teeth as indicated previously.

[0153] Thus, when the device is used, a strand of hair is inserted between the jaws 3 and 4, and the device is moved along the strand of hair. The combing member is in a combing angular position. If a knot becomes caught on one of the teeth 28, the hair then exerts a tangential force on the combing member 22. If the tangential force exceeds the predetermined threshold allowing the pin 32 to exit the corresponding groove 42, the combing member 22 rotates in the direction of the force to release the corresponding knot and moves into an unstable pivoted angular position, i.e., in this case of hair escape, as illustrated in [Fig. 8], and this continues until the pin 32 cooperates with the next groove 42. In the angular escape position illustrated in [Fig.8], the teeth form an angle y with the line perpendicular to the treatment sole 17a or 17b or the line in the combing position.This angle can be between 30 and 180°. Here, the combing organ 22 rotates a quarter turn. Treatment can then resume with a second row of teeth extending between the jaws.

[0154] The device may further include, particularly on the disengageable retaining system 30, a system for adjusting the predetermined threshold 50 to manually vary this threshold. The predetermined threshold adjustment system 50 may include a manually rotating knob allowing the elastic element 34 to be compressed more or less, and thus adjusting the pressure exerted by the elastic element 34 on the pin 32. The more the elastic element 34 is compressed, the more difficult it is to remove the pin 32 from the recess 42, and the higher the predetermined threshold, and vice versa.

[0155] Furthermore, the combing member 22 can be removable. The housing 20 for receiving the combing member 22 can be opened at the distal end of the device to allow extraction of the combing member from the housing. The member of The comb can be extracted using the rod 29 or, in an alternative not shown, the rod 29 is fixed in the housing 20 and only the core bearing the teeth is extracted from the housing. The housing 20 can be closed at its end by an end cap 60 clipped to the distal end of the device, in particular by snapping. The end cap 60 may have a gripping projection 62 to facilitate its extraction and the opening of the housing. The invention is not limited to such an end cap. The comb could be removable and interchangeable with other combs, in particular those having different teeth or tooth spacing, by any other means, in particular by snapping the comb(s) into corresponding reliefs in the housing, the latter being closed at the distal end of the device.

[0156] Alternatively, not shown, the comb may not be removable. It may be fixedly mounted in its housing and the device may be without the end cap.

[0157] In the illustrated example, the jaw 3 opposite the one carrying the combing element 22 has a recess 65 opposite the combing element, formed by the absence of a heated treatment plate opposite it. This allows visualization of the combing element and the hair, and reduces the weight of the device. However, the invention is not limited to such a recess 65 formed by the absence of a heated treatment plate opposite it; the opposite jaw may have a more pronounced opening or recess directly in the jaw. Alternatively, the device may lack such a recess 65, and the opposite jaw may have a surface opposite the combing element 22 in the closed configuration of the jaws 3 and 4. The opposite surface may be a continuation of the treatment plate, the jaw 3 then carrying a single heated or unheated treatment plate, or it may have a counter-support surface distinct from the treatment plates.Alternatively, the opposite jaw 3 may include an additional processing organ, in particular another combing organ pivoting or not opposite the combing organ 22 having or not having teeth interlocked with those of the combing organ 22.

[0158] The rotation of the combing member 20 can be in one direction or the other depending on the direction of the tangential force exerted which corresponds to the direction of movement of the device on the hair strand.

[0159] In the illustrated example, the device is symmetrical so that the hair is treated equally by the device in both directions of use. However, it could be otherwise, and the combing member 22 could not be centered, in particular being off-center to one side or extending laterally to a single treatment plate, as illustrated, for example, in Figures 11 and 12.

[0160] The embodiment shown in Figures 9 and 10 differs from the embodiment described above in that the combing member 22 has a single row of teeth and can pivot to one side or the other when the tangential force exceeds the predetermined threshold. All the preceding explanations apply. The main difference is that the combing element 22 does not have a succession of rows of teeth around the core, and that the combing element 22 must return to the single combing angular position after pivoting. In this case, the device may include a return element to the combing position 70, for example, an elastic, magnetic, or any other known means, to return the combing element 22 to its position illustrated in [Fig. 9]. Furthermore, the jaw 3 opposite the one carrying the combing element lacks an opening facing the combing element 22. It has a hollow 68 formed by the absence of a treatment sole in contact with the hair, allowing the teeth 28 of the combing element to extend over a greater height.Thus, when the device is used, a strand of hair M is inserted between the jaws 3 and 4 and the device is moved along the strand of hair in the direction D. The combing member is in a combing angular position. If a knot N becomes caught on one of the teeth 28, the hair then exerts a tangential force F on the combing member 22. When the tangential force exceeds the predetermined threshold allowing the combing member 22 to pivot, the combing member 22 pivots in the direction of the force F to release the corresponding knot N and passes into an unstable angular position for hair escape, as illustrated in [Fig. 10]. Here, a quarter turn pivot is illustrated, but the pivot can be of a smaller angle, in particular a minimum angle to release the node N. The combing member 22 is then brought back by the return member 70 into the angular combing position illustrated in [Fig.9].Treatment can then resume.

[0161] The embodiment of [Fig. 11] differs from the embodiment described in relation to Figures 9 and 10 in that the jaws 3 and 4 each have a single treatment plate 16 and 17, and the combing member 22 is arranged laterally to the treatment plate of one of the jaws 4 in a corresponding recess 20. Alternatively, not shown, the combing member 22 could be arranged laterally to the corresponding jaw rather than in a recess of the jaw. The device may or may not have a surface opposite the combing member 22 in the closed configuration of the jaws.

[0162] The embodiment of [Fig. 12] differs from the embodiment described in relation to Figures 1 to 8 in that - Jaws 3 and 4 each have a single treatment sole 16 and 17, - at least one of the jaws 3 and 4, in particular jaw 3 carrying the combing member 22, comprises a heated external treatment member forming an external treatment sole 70, and - the combing organ 22 comprising a plurality of rows of teeth is arranged laterally to the treatment sole 16 between the jaws 3 and 4 and to the external treatment sole 70 in a corresponding housing 20.

[0163] In an alternative not shown, each of the two jaws may have an external processing element. In another alternative not shown, the combing element is arranged in a recess on the external surface of one of the jaws, in particular between two external processing plates.

[0164] It is possible with such a device to achieve hair curling by wrapping the hair around the jaw containing the external heating treatment sole or around the device.

[0165] In this case, one row of teeth can extend radially to the external surface in an angular combing position, and another row of teeth can extend between the two jaws. The combing element can then comb the hair when using the device to curl the hair by wrapping it around the external surface or by straightening it by passing it between the jaws, and it can pivot when a predetermined threshold is exceeded by applying a tangential force to either of these rows of teeth.

[0166] The embodiment of Figures 14A and 14B differs from that of [Fig. 11] in that the combing member 22 is configured to be fixed during use of the device by moving the device from the head T towards the points, when the tangential force F exerted on the row of teeth 28 is oriented in one direction, in particular towards the treatment sole as illustrated in [Fig. 14A], and to pivot during use of the device when the tangential force exerted on the row of teeth 28 is oriented in the other direction, in particular outwards as illustrated in [Fig. 14B]. Thus, the device is configured so that the combing member 22 is in a combing position only in one direction of use of the device, in particular in a direction such that the combing is performed on the strand of hair C upstream of the treatment by the treatment sole.The combing element 22 can be mounted on a torsion spring 80 (not shown) which prevents pivoting in one direction and allows it in the other.

[0167] The embodiment of Figures 15A and 15B differs from that of Figures 14A and 14B in that the device comprises two combing members 22a and 22b mounted in housings 20a and 20b respectively on either side of the treatment plates 16 and 17. The two combing members 22a and 22b are both as described in relation to Figures 14A and 14B, that is, they are both configured so as not to pivot towards the treatment plates 16 and 17 and to pivot outwards as soon as a tangential force is applied to them in the corresponding direction. Thus, regardless of the direction of use, only one of the two members of Combing element 22, specifically the combing element 22 upstream of the treatment plates in the direction of hair strand movement, engages with the hair, while the other pivots to allow the hair to pass through without being caught. In the case of a straightening treatment, as illustrated in [Fig. 15A], only the combing element 22b on the side of the device opposite the user's head T pivots during movement D so that the hair undergoes combing followed by heat treatment from the treatment plates 16 and 17. In the case of a curling treatment, as illustrated in [Fig. 15B], only the combing element 22a on the side of the strand connected to the head T pivots during movement D so that the hair undergoes combing followed by heat treatment from the treatment plates 16 and 17.In this case, the housing 20 of the combing elements may include a lateral cavity 90 in the jaw configured to receive the combing element in a pivoted angular position in hair curling configuration as illustrated in [Fig.10B], in particular without the combing element protruding from the jaw.

[0168] The invention is not limited to the embodiments just described. The elements of the embodiments can be combined with each other when they are combinable.

[0169] In the illustrated examples, the device is devoid of any additional processing element on the device. However, the device may, in a known manner, include at least one additional processing element, in particular selected from the group consisting of steam applicators, cosmetic product applicators, pivoting or non-pivoting combs, and a combination thereof.

[0170] The figures illustrate embodiments with a single combing member 22. It is of course possible to have several combing members on the device, for example one combing member pivoting upstream of a treatment sole and another downstream of the same treatment sole or two combing members pivoting each on a jaw, for example opposite each other, whether nested or not.

[0171] The combing member(s) of Figures 14A to 15B are locked in pivoting in one direction. However, in this direction, it could be as described in relation to the preceding figures, i.e., have a predetermined pivoting threshold to allow the hair to escape in the event of tension characteristic of a blockage caused by a knot catching on the combing member.

[0172] In an alternative, not illustrated, the device is jawless and comprises an external heating treatment structure only.

Claims

Demands

1. Hair treatment device (2), in particular for curling and / or straightening hair by movement along a strand of hair from a root to a tip, comprising: - at least one heated hair treatment structure configured to come into contact with the hair during hair treatment by at least one treatment plate (16, 17; 16a, 16b, 17a, 17b), - a combing member (22) configured to come into contact with the hair during hair treatment, the combing member (22) being pivotable about a pivot axis P in at least one direction of pivoting under the effect of a tangential contact force exerted by a strand of hair moving through the comb on the latter in at least one direction of movement of the device on the hair.

2. Device according to claim 1, wherein the combing member (22) is configured to pivot automatically in at least one direction of pivoting around the pivot axis P when the tangential contact force exceeds a predetermined threshold.

3. Device according to claim 1 or 2, wherein the combing member (22) is configured to pivot automatically around the pivot axis P, in a first direction when a tangential contact force exerted on it exceeds a first predetermined threshold, and to pivot automatically around the pivot axis P in a second direction when a tangential contact force exerted on it exceeds a second predetermined threshold.

4. Device according to claim 3, wherein the first and second predetermined thresholds are identical and significant of the presence of a knot on the hair which comes into contact with the combing member (22), the first and second predetermined thresholds being configured in particular to correspond to a tension in the hair strand between IN and ION, in particular between 2N and 6N, for example around 4N or to correspond to a torque at the axis of rotation between 6x10 3Nm and 6x10 2Nm, in particular between 1x10 2Nm and 5x10 2Nm, for example around 2.4x102Nm.

5. Device according to claim 2 or 3, wherein the combing member (22) is configured to pivot automatically around the pivot axis P in one direction as soon as a tangential contact force characteristic of use in said direction is exerted in said direction, the combing member (22) being configured in particular to - be pivotable only in one direction, the combing member (22) being blocked from pivoting in the other direction, or to - be pivotable in both directions with different predetermined first and second thresholds, the first predetermined threshold being configured so that the combing member (22) pivots as soon as a tangential contact force characteristic of use in the first direction is exerted and the second predetermined threshold being significant of the presence of a knot on the hair which comes into contact with the combing member (22).

6. Device according to any one of claims 2 to 5, comprising a predetermined threshold adjustment system (50) for manually varying the predetermined threshold.

7. Device according to any one of the preceding claims, wherein the combing member has one or more angular combing positions around the pivot axis P and / or one or more angular positions pivoted around the pivot axis P.

8. Device according to claim 7, comprising a disengageable holding system (30) of the combing member (22) in the or each angular combing position, in particular configured to hold the combing member (22) in the or one of the angular combing positions as long as the tangential contact force applied to the combing member (22) is less than the predetermined threshold and to release the combing member (22) in rotation about the pivot axis P when the tangential contact force applied to the combing member (22) is greater than the predetermined threshold.

9. A device according to claim 8, wherein one of the disengageable retaining system (30) and the combing member (22), preferably the disengageable retaining system (30), comprises an elastic disengagement member (31) configured to cooperate with complementary disengagement reliefs (42) of the other of the system disengageable holding mechanism (30) and combing element (22), preferably the combing element.

10. Device according to claim 9, wherein the combing member (22) has a longitudinal extension (40) at the distal or proximal end without teeth (28) and comprising the complementary disengagement relief(s) (42).

11. Device according to claim 9, comprising an elastic return member (80) for maintaining the combing member (22) in at least one predefined angular position, in particular the or one of the combing angular positions.

12. A device according to any one of the preceding claims, comprising a housing (20) for receiving the combing element (22) extending around the periphery of the heating treatment structure, in particular around the periphery of the treatment sole (16, 17; 16a, 16b, 17a, 17b), or within the heating treatment structure, in particular within the treatment sole or between two treatment soles of the heating treatment structure (16, 17; 16a, 16b, 17a, 17b), the combing element (22) preferably being removable from its housing (20).

13. Device according to any one of the preceding claims, comprising two jaws (3, 4) arranged opposite each other and articulated between a closed treatment configuration and an open hair engagement configuration between the jaws, at least one of the jaws (3, 4) comprising the treatment sole of the heating treatment element (16, 17; 16a, 16b, 17a, 17b) opposite the other jaw (3, 4) in closed jaw configuration and one of the jaws carrying the combing element (22), in particular the jaw carrying the treatment sole of the heating treatment element.

14. A device according to any one of the preceding claims, wherein the combing member (22) comprises a single row of teeth (28) having an angular extent on the combing member (22) of less than or equal to 180°, in particular less than or equal to 90°, the combing member (22) being configured so that the teeth (28) extend, in the single angular combing position, perpendicularly to the adjacent treatment sole(s) (16, 17; 16a, 16b, 17a, 17b), in particular of the same jaw (3, 4), and so that the teeth (28) form, in the angular positions pivoted, at an angle between 30° and 180° with the perpendicular to the adjacent treatment sole(s) (16, 17; 16a, 16b, 17a, 17b), in particular of the same jaw, on one side or the other depending on the direction of use of the device.

15. A device according to any one of claims 1 to 14, wherein the combing member (22) comprises a plurality of rows of teeth arranged around the combing member (22) in a star pattern, in particular equidistant around the combing member (22), the combing member (22) comprising, in particular, as many angular combing positions as there are rows of teeth (28) and being configured such that, in the angular combing positions, the teeth (28) of one of the rows extend perpendicularly to the adjacent treatment sole(s) (16, 17; 16a, 16b, 17a, 17b), in particular of the same jaw, and such that, in the pivoted angular positions, the teeth of at least one row, in particular at least two adjacent rows, form an angle of 360 / 2n° with the perpendicular to the treatment sole(s). adjacent (16, 17;16a, 16b, 17a, 17b), in particular of the same jaw, on one side or the other depending on the direction of use of the device, n being the number of rows of teeth.;

16. A method for treating hair, in particular for straightening and / or curling, using the device according to any one of the preceding claims, comprising treating a strand of hair using the device.

Images