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WO2025087942A1 - Dispositif et procédé de traitement de cheveux - Google Patents

Dispositif et procédé de traitement de cheveux Download PDF

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Publication number
WO2025087942A1
WO2025087942A1 PCT/EP2024/079893 EP2024079893W WO2025087942A1 WO 2025087942 A1 WO2025087942 A1 WO 2025087942A1 EP 2024079893 W EP2024079893 W EP 2024079893W WO 2025087942 A1 WO2025087942 A1 WO 2025087942A1
Authority
WO
WIPO (PCT)
Prior art keywords
handpiece
hair
notably
jaws
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/079893
Other languages
English (en)
Inventor
Regis Fereyre
Fabien Normand
Christophe PERROT
Pierre QUIBRIAC
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEB SA
LOreal SA
Original Assignee
SEB SA
LOreal SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SEB SA, LOreal SA filed Critical SEB SA
Publication of WO2025087942A1 publication Critical patent/WO2025087942A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel
    • A45D1/04—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
    • A45D2/001—Hair straightening appliances
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
    • A45D2/001—Hair straightening appliances
    • A45D2/002—Hair straightening appliances with combs

Definitions

  • the present invention relates to devices for treating hair and more particularly, but not exclusively, to those intended for shaping the hair, notably intended for curling and/or straightening the hair.
  • the invention more particularly relates to smoothing and/or straightening devices comprising two jaws mobile one with respect to the other, able to adopt a parted configuration, for introducing a lock of hair between them, and a close-together configuration, for treating the lock.
  • Some of these devices are designed to be used along a lock of hair in a particular direction.
  • an incorrect direction of use may lead to degraded treatment, or may even be uncomfortable for the user.
  • KR10-2021-0016993, KR10-2017-0122407 and WO2016/161259 disclose hair treatment devices which comprise heated plates which are switched on and/or off under the control of the movements of the devices as detected by motion detectors.
  • EP3429420 describes controlling switching the device on or off by detection of a short rotational movement of a treatment roller in one direction or the other.
  • US20170231353 describes a device comprising a motion sensor, notably of the accelerometer or gyroscope type, in the handgrip part in order to cause a motor to move a heated part so as to follow the movements of the user's hand.
  • a motion sensor notably of the accelerometer or gyroscope type
  • EP3178347 detects a rotational movement of the device using a rotation or acceleration sensor in a handgrip part so as to trigger certain actions on the device in a cooling zone.
  • these devices do not provide the users with any indication as to whether or not they are using the device correctly when performing a treatment in a favoured direction of use.
  • the present invention achieves this by virtue of, according to one of its aspects, a device for treating the hair, notably for curling and/or straightening the hair, comprising:
  • a handpiece able to treat a lock of hair by moving along a lock of hair from a root towards a tip, the device having, during treatment, a first direction of use in which the lock travels from a front face towards an opposite rear face of said device and a second direction of use in which the lock travels from said rear face towards the opposite front face;
  • an at least electric power-supply lead having a fixing attaching it to the handpiece that is able to rotate relative to the handpiece;
  • a direction-of-use sensor configured to supply data indicative of the direction of use of the handpiece at least from among the first and second directions of use, said sensor being positioned in the rotary fixing of the power-supply lead to the handpiece.
  • Such detection of the direction of use makes it possible to identify the direction of use from among the first and the second directions of use in order notably to check whether the user is using the hair treatment device in accordance with a favoured direction of use from among the first and second directions of use and defined by the designers of the device. Once this check has been made, if the direction of use is not the correct direction, it is then easy for example to alert the user, as will be detailed later on.
  • the sensor is at the rotary fixing also means that the detection can be sited as close as possible to the movement of the hand and, in the case notably of a handpiece in the form of two articulated arms, such that it is not affected by the movement of the arms relative to one another.
  • the device is a device for shaping the hair, notably for curling and/or for straightening.
  • the handpiece has a handle and a head.
  • the handle makes the device easier to grip and allows complementary elements, notably a user interface, a reservoir for fluid that is to be vaporized and possibly a reservoir for cosmetic product, to be inserted into the device.
  • the head of the treatment device may have any shape in cross section.
  • the head of the treatment device has a substantially polygonal, in particular substantially rectangular or substantially square, or substantially oval or circular cross section.
  • Other shapes of cross section are possible, such as a cross section with a polygonal contour on one side and a non-polygonal, notably rounded, for example circular, cross section on the other side.
  • the head of the device is of flattened overall shape, in cross section.
  • the handpiece may be elongate along a longitudinal axis.
  • the front and rear faces may extend along the longitudinal axis of the handpiece.
  • the handpiece is preferably asymmetric about at least a longitudinal median plane extending between the front and rear faces of the handpiece.
  • the handpiece is asymmetric with respect to at least a longitudinal median plane has the effect that the treatment of the hair is asymmetric during treatment, which is to say that, if the treatment is divided into two parts of equal duration, for the same rate of travel of the handpiece, the second part of the treatment is different from the inverse of the first part of the treatment.
  • the treatments in the first and second directions of use are different.
  • Such asymmetry of the treatment may notably lead to a degraded treatment when the direction of use is not as prescribed, namely a treatment of a quality inferior to that which the device is able to provide when used correctly in an optimal direction of use.
  • the handpiece notably the head of the handpiece, may comprise two jaws connected to one another and able to adopt an open configuration for engaging hair between them and a closed, treatment, configuration.
  • the handpiece comprises two jaws connected to one another and able to adopt an open configuration for engaging hair between them and a closed, treatment, configuration
  • the jaws extend at a distal end of the handle.
  • the two jaws may be connected to one another at a proximal end by an elastic hinge, notably configured to keep the two jaws in the open configuration.
  • the jaws may each be borne by one arm, the two arms being connected to one another, notably by an articulation at one of their ends, so as to make the jaws adopt the closed or open configuration.
  • the two arms may each comprise a half-handle at the end corresponding to the articulation and one of the jaws at the end corresponding to their free end.
  • the device may comprise a jaw-configuration detection member configured to detect whether the jaws are in the closed, treatment, configuration or in the open configuration, notably a Hall-effect sensor.
  • the detection member may be sited at the jaws or at the handgrip part of the arms.
  • the direction-of-use sensor may be configured to supply the data indicative of the direction of use only when the jaws are in the closed configuration, notably when the detection member detects a closed configuration of the jaws.
  • the handpiece notably at least one of the jaws, may comprise at least one internal treatment member comprising an internal treatment surface configured to come into contact with, or to come to face, part of the lock of hair during the treatment.
  • the internal treatment surface is preferably thermal.
  • the treatment member is preferably a heated plate.
  • Each jaw may comprise an internal treatment member comprising an internal treatment surface configured to come into contact with, or to come to face, the treatment member of the other jaw.
  • the handpiece When the jaws are in the closed configuration, the handpiece is preferably asymmetric with respect to at least a longitudinal median plane transverse to the treatment surface.
  • the handpiece may comprise at least one external treatment member comprising an external treatment surface configured to come into contact with part of the lock of hair during treatment, the external treatment surface notably being thermal, notably being a heating plate.
  • the external treatment member may notably curl the hair by the hair being wound around the handpiece and/or around one or each jaw.
  • the rotary fixing attaching the power-supply lead may extend along the handle of the handpiece, notably a proximal end of the handle, for example a proximal end of a halfhandle.
  • the rotary fixing may extend in the region of the articulation connecting to one another two arms able to move relative to one another between an open configuration for engaging the hair between them and a closed, treatment, configuration.
  • the fixing that attaches the lead to the handpiece may be capable of rotating substantially about the longitudinal axis of the handpiece, or about an axis that makes an angle that is not perpendicular to the longitudinal axis of the handpiece but remaining in the longitudinal median plane transverse to the treatment surface.
  • the device when the device is being used, when the user modifies the orientation of the handpiece, they rotate the device, with respect to the terrestrial horizontal, about the longitudinal axis of the handpiece.
  • having the fixing able to rotate substantially about the longitudinal axis of the handpiece, or an axis making a nonperpendicular angle with respect to the longitudinal axis of the handpiece means that the rotary fixing turns when the orientation of the handpiece with respect to the terrestrial horizontal about the longitudinal axis of the handpiece is modified.
  • the lead comprises a elbow portion at its end connected to the handpiece.
  • the elbow portion may form an angle of deviation between two parts of the lead that is comprised between 90° and 170°, preferably between 120° and 160°, and advantageously substantially equal to 140°.
  • Such an elbow portion makes the handpiece easier to use by reducing the bulkiness of the lead in view of its stiffness in the longitudinal direction of the handpiece.
  • This also makes it possible, in connection with the rotary fixing, to have a lead that always self-orientates in the same substantially vertical direction, in this instance downwards under the effect of its own weight, without tilting in the opposite direction as the handpiece rotates, thereby facilitating the detection of the direction of use.
  • the lead is configured such that its elbow portion has, in use, a median plane that is in a substantially vertical plane.
  • the lead self-orientates under the effect of its own weight when the device is picked up, and the direction-of-orientation sensor detects a change in orientation with respect to the initial orientation in order from this to deduce a direction of use relative to the initial position.
  • the lead may be weighted, for example at its centre or eccentrically. In that case, the weighting allows the lead to self-orientate downwards under the weight of the weighting.
  • the indicative data are preferably a variation in the position of the lead or of its rotary fixing.
  • the rotary fixing is configured such that the rotational movement of the handpiece is substantially independent of the rotation of the lead. This allows the direction of use to be detected at the fixing via which the lead is attached by detecting the orientation of the handpiece with respect to the rotary fixing of the lead.
  • the direction-of-use sensor may be a sensor that senses the position, the rotation and/or the orientation of the rotary fixing of the power-supply lead relative to the handpiece.
  • the data indicative of the direction of use may correspond to a position comprised within a range of positions of the power-supply lead relative to the handpiece from among at least two predetermined distinct ranges of positions corresponding respectively to the first and to the second direction of orientation, to a rotation of the rotary fixing that is comprised within a range of rotations of the power-supply lead relative to the handpiece from among at least two predetermined distinct ranges of rotations and/or to an orientation within a range of orientations of the rotary fixing of the power-supply lead relative to the handpiece from among at least two predetermined distinct ranges of orientations.
  • the power-supply lead has a tendency to maintain at its fixing to the handpiece an orientation with respect to the terrestrial horizontal that remains relatively fixed, and notably has a tendency to extend vertically.
  • the first direction of use may be an optimal direction of use for performing the treatment along the lock of hair optimally, and the second direction of use may be an opposite degraded direction of use.
  • the direction-of-use sensor may comprise a first part that is fixed relative to the handpiece and a second part that is fixed relative to the lead, the sensor being configured to determine the position, the rotation and/or the orientation of the first part with respect to the second part, or vice versa.
  • the first and second parts may comprise electrical -connection elements configured with respect to one another to exhibit at least one or more different electrical properties in two ranges of positions and/or of orientations of the rotary fixing corresponding respectively at least to the first and second directions of use.
  • the electrical property or properties may include a voltage, a current strength or a resistance.
  • the direction-of-use sensor may comprise a microcontroller configured to detect the electrical property, notably the voltage between two conducting elements, notably between two electrical contacts or between an electrical track and an electrical contact.
  • the first part and the second part may each comprise one or more electricalconduction elements forming electrical connections that are dependent on the position and/or on the orientation of the first part and of the second part relative to one another, notably able to adopt at least two different electrical-connection configurations according to the position and/or orientation of the rotary fixing, in particular of the first part and of the second part of the sensor relative to one another, corresponding to the at least first and second directions of use of the handpiece.
  • the first and second parts may each comprise one or more electrical-conduction elements, one of the electrical-conduction elements of one of the first and second parts being connected to a non-zero electrical power supply, notably to the mains, and at least one other electrical -conduction element of one of the first and second parts constituting an electrical detection electrode.
  • electrical-conduction elements of the first part and of the second part may be in contact with one another such that there is electrical continuity between the conduction element connected to the electrical power supply and the electrical detection electrode. Outside of said range, there is no electrical continuity between these two elements. It is then possible by simple electrical measurement to identify whether the first part and the second part are positioned outside of or within the range of positions and/or orientations.
  • a plurality of electrical -conduct! on elements each belonging to one of the first and second parts may constitute electrical -detection electrodes.
  • Each electrode may be: electrically connected to the conduction element that is connected to the nonzero electrical power supply, in one range of positions and/or of orientations of the first and second parts relative to one another, and not connected to the conduction element that is connected to the electrical power supply outside of this range.
  • the ranges of positions and/or of orientations of the first and second parts relative to one another that are associated with the electrodes may be different. It is then possible by electrical measurement on a plurality of electrodes to refine the detection of the position and/or of the orientation of the first part and of the second part relative to one another by detecting the electrodes which are electrically connected to the electrical power supply and those which are not, combined with the knowledge, for each one, of the associated range of positions or orientations.
  • one, preferably the first part may comprise at least one electrical contact, better still two electrical contacts, even better still three electrical contacts, and of the first and second parts of the sensor, the other, preferably the second part, may comprise an electrical track.
  • the or each electrical contact is in contact with the electrical track in at least one range of positions and/or orientations of the first part relative to the second part.
  • the ranges of positions and/or orientations of the first part relative to the second part that are associated with each electrical contact may be different. They may be completely separate or may at least partially overlap. Each range of positions and/or of orientations may correspond to one of the directions of use.
  • the electrical track may extend over the periphery of the first or of the second part in an arc of a circle.
  • the electrical track may extend over an angular range comprised between 90° and 210°, notably between 120° and 180°.
  • the electrical contacts may be positioned on a circle of substantially the same diameter.
  • the adjacent electrical contacts may notably be separated from one another by an angle comprised between 60° and 200°.
  • the electrical contacts may extend over the first or second part covering an angular extent comprised between 10° and 90°, notably between 10° and 20°.
  • the or at least one of the electrical-conduction elements of the first part notably the or one of the electrical contacts or the electrical track
  • the or at least one of the electrical -conduction elements of the second part notably the or one of the electrical contacts or the electrical track
  • the first part may be symmetrical with respect to a median plane transverse to the plane extending between the jaws when the jaws of the handpiece are in the closed configuration.
  • one, preferably the first part comprises at least two electrical contacts, notably three, one of the electrical contacts being connected to a non-zero electrical power supply, the other contact(s) being unpowered.
  • the electrical track is not electrically powered and the electrical property is measured on the non-powered contact(s) relative to the electrically powered contact.
  • the electrical property notably the voltage
  • measured is non-zero on the or one of the non-powered electrical contact(s)
  • one, preferably the first part comprises at least two, notably three, non-powered electrical contacts.
  • the electrical track is electrically powered and the electrical property is measured on the contacts with respect to the electrically powered track.
  • the electrical property, notably the voltage, measured on each contact conforms to a first electrical configuration, this means that the handpiece is being used in one of the first and second directions of use.
  • the electrical property, notably the voltage, measured on each contact conforms to a second electrical configuration different from the first in terms of at least one voltage measured at one contact, this means that the handpiece is being used in the other of the first and second directions of use.
  • one, preferably the first part comprises a single electrical contact, and, of the electrical contact and the metal track, one is electrically powered and the other is not.
  • the electrical property is non-zero, this indicates that the electrical contact is in contact with the electrical track and that the handpiece is being used in one of the first and second directions of use. If the opposite is true, this means that the handpiece is being used in the other of the first and second directions of use.
  • the microcontroller may be configured to detect the electrical property only when the jaws are in the closed configuration, notably when the jaw-configuration detection member detects a closed configuration of said jaws.
  • the electrical contacts are not powered, which means that the microcontroller is unable to detect the electrical parameter.
  • the electrical contacts are constantly powered when the device is in operation, the direction-of-use sensor being configured not to transmit the information when the jaws are in the open configuration.
  • the part comprising the electrical contacts may comprise an electrical-contacts support made from an electrically insulating material, said electrical insulator having the electrical contacts passing through it, that part of the electrical contacts that extends on one side of the support being configured to extend into contact with the metal track in at least one orientation of the handpiece relative to the lead, that part of the electrical contacts extending on the other side being configured to be electrically connected to a microcontroller measuring the electrical parameter, notably a voltage on at least one electrical contact, notably on the non-powered electrical contacts.
  • the direction-of-use sensor may be a binary sensor configured to discriminate between the first and second directions of use.
  • the device may comprise a processor configured to determine the direction of use from among at least the first and the second direction of use of the handpiece on the basis of the data indicative of the direction of use from the direction-of-use sensor, notably from the singular or plural voltage data detected by the microcontroller, and to generate direction- of-use information.
  • the processor may be configured to determine the direction of use only when the jaws are in the closed configuration.
  • the processor may be configured to emit the generated direction-of-use information to a user-alert member to which the device is connected or which forms part of the device.
  • the device may comprise a user-alert member configured to receive the information regarding the direction of use of the handpiece and to emit, for at least one direction of use, a user alert, notably a signal perceptible to the user, notably an audible, visual or haptic signal dependent on the direction of use.
  • a user alert notably a signal perceptible to the user, notably an audible, visual or haptic signal dependent on the direction of use.
  • the user-alert member may be comprised in or on the handpiece.
  • the user-alert member may be separate from the handpiece.
  • the user-alert member may be a telephone or a tablet connected wirelessly to the processor.
  • the user alert emitted by the user-alert member may correspond to one of the first and of the second directions of use, notably to a degraded direction of use from among the first and the second directions of use.
  • the device therefore enables simplified use of the device, making it more intuitive and ergonomic.
  • the device may comprise an additional treatment member, notably selected from the group consisting of steam applicators, cosmetic-product applicators, brushes or combs, and a combination thereof.
  • an additional treatment member notably selected from the group consisting of steam applicators, cosmetic-product applicators, brushes or combs, and a combination thereof.
  • the application of steam may be achieved through a series of orifices, notably aligned along the longitudinal axis of the handpiece.
  • the handpiece may comprise two jaws connected to one another and able to adopt an open configuration for engaging hair between them and a closed, treatment, configuration, the additional treatment member being mounted at least on one of the jaws and extending at least partially between the two jaws.
  • the additional treatment member may be arranged on the handpiece, notably on one of the jaws, asymmetrically with respect to a median plane, notably transverse to a median plane extending between the jaws when the jaws are in the closed configuration.
  • the additional treatment member may be arranged on the handpiece such that it treats the hair before the plate or plates in one direction of use and after the plate or plates in another direction of use. Having the additional treatment member apply its treatment beforehand then advantageously constitutes the preferred direction of use of the device.
  • the additional treatment member may be positioned laterally on the handpiece, notably laterally on one of the jaws.
  • a further subject of the invention is a method for treating the hair, notably for curling and/or straightening hair, by moving a handpiece of a device, notably as described hereinabove, along a lock of hair, which method comprises, while the device is being moved along the lock of hair from the roots to the tips:
  • - determining the direction of use of the handpiece of the device at least from among a first and a second direction of use in which the lock travels from a front face towards an opposite rear face of the handpiece and a second direction of use in which the lock travels from said rear face towards the opposite front face of the handpiece, from data from a direction-of-use sensor positioned in a rotary fixing that attaches a power-supply lead of the device to the handpiece,
  • the device adopting one configuration from among at least two different configurations on the basis of the direction of use determined.
  • the first direction of use may be an optimal direction of use for performing the treatment along the lock of hair optimally, and the second direction of use may be an opposite degraded direction of use.
  • the configuration adopted by the device may be an alert configuration perceptible to the user when one direction of use from among the first and second directions of use is determined.
  • the configuration adopted by the device may be a particular operating configuration connected with the direction of use, notably a degraded operating configuration in the case of a non-recommended direction of use.
  • the data from the direction-of-use sensor may be the position or the rotation of the rotary fixing relative to the handpiece, notably able to rotate substantially about the longitudinal axis of the handpiece or about an axis making a non-perpendicular axis with respect to the longitudinal axis of the handpiece.
  • the rotary fixing may adopt a position or rotation corresponding to an optimal direction of use for optimally performing the treatment along the lock of hair, or a position or rotation corresponding to a degraded, notably opposite, direction of use.
  • the device may adopt the alert configuration when the position or rotation corresponds to the degraded direction of use.
  • the user When the device is used, the user orients the handpiece by turning it about its longitudinal axis, this altering the relative position between the handpiece and the powersupply cord because of rotation of the rotary fixing as a result of the terrestrial force of gravity.
  • the orientation of the handpiece is advantageously indicative of the direction of use of the handpiece.
  • each direction of use corresponds to an orientation or a range of orientations, the orientations or the ranges of orientations being different and not completely superposed between the different directions of use.
  • the position or the rotation of the rotary fixing is thus indicative of the direction of use of the handpiece.
  • This range of orientations may be comprised between 20° and 200°, notably between 60° and 100°.
  • the device may in the alert configuration emit a signal perceptible to the user, notably an audible, visual or haptic signal.
  • the device may comprise two jaws able to adopt a configuration in which the jaws are parted, and a configuration in which the jaws are close together, in which method the device may adopt the alert configuration only when said jaws are in the close-together configuration.
  • the device may comprise a jaw-configuration detection member configured to detect whether the jaws are in the closed, treatment, configuration or in the open configuration, notably a Hall-effect sensor, an electrical contact switch, or an optical contact switch, preferably a Hall-effect sensor.
  • a jaw-configuration detection member configured to detect whether the jaws are in the closed, treatment, configuration or in the open configuration, notably a Hall-effect sensor, an electrical contact switch, or an optical contact switch, preferably a Hall-effect sensor.
  • the method may comprise a step of determining the detection of the configuration of the jaws.
  • the direction of use is determined only if the configuration detected is the closed configuration.
  • the method may involve treating the hair on an internal treatment surface of the handpiece, notably a thermal surface, notably a heated plate.
  • the method may involve treating the hair on an external treatment surface of the handpiece, notably a thermal surface, notably a heated plate.
  • the method may comprise an additional treatment, notably an application of steam, an application of a cosmetic product and/or a combing action.
  • Figure 1 illustrates, in side view, one example of a device, in a closed configuration, according to the invention
  • Figure 2 illustrates, in perspective, the device of Figure 1 in an open configuration
  • FIG 3 illustrates, in perspective, the rotary fixing of the device of Figure 1, extracted from the handpiece of the device,
  • Figure 4 illustrates, in perspective, part of the rotary fixing of Figure 3, mounted in a part of the device,
  • Figure 5a illustrates, schematically in a view from above, one example of use of the device
  • Figure 5b illustrates, schematically in side view, the orientation of the device in the example of use of Figure 5a
  • Figure 5c illustrates, schematically in side view, the orientation of the rotary fixing in the example of use of Figures 5a and 5b,
  • Figure 6a illustrates, schematically in a view from above, another example of use of the device
  • Figure 6b illustrates, schematically in side view, the orientation of the device in the example of use of Figure 6a
  • Figure 6c illustrates, schematically in side view, the orientation of the rotary fixing in the example of use of Figures 6a and 6b
  • Figure 7 illustrates, schematically and in perspective, a variant of the rotary fixing, extracted from the handpiece of the device
  • FIG 8 Figure 8 schematically illustrates another variant of the rotary fixing
  • Figure 9 illustrates, schematically and in perspective, another variant of the rotary fixing, extracted from the handpiece of the device.
  • Figures 1 to 6c illustrate a first example of a device 1 according to the invention, in this example for straightening the hair.
  • This device 1 has a handpiece 2 comprising two jaws 3 and 4 able to move one relative to the other between an open configuration, visible in Figure 2, for introducing a lock of hair between them, and a closed, treatment, configuration, illustrated in Figure 1.
  • the jaws 3 and 4 are carried by a respective upper arm 5 and lower arm 6 which arms are, in the example considered, connected to one another at one of their ends by an articulation 8, the handpiece 2 thus forming a pair of tongs.
  • the arms 5 and 6 define, between the articulation 8 and the jaws 3 and 4, respective half-handles 10 and 11 against which the user may press in order to bring the jaws 3 and 4 closer together and thus grip the hair extending between the two jaws.
  • the width of the arms 5 and 6 at the half-handles 10 and 11 is less than that at the jaws 3 and 4.
  • the jaws 3 and 4 each have a convex exterior surface and a substantially flat interior surface.
  • An elastic return member (not visible) is preferably provided to return the jaws
  • this elastic return member being for example a spring positioned around or near a pivot pin of the articulation 8.
  • the invention is not restricted to a particular way of joining the arms 5 and 6 to one another and the jaws 3 and 4 may be rendered mobile in some other way without departing from the scope of the present invention.
  • the presence of an articulation is greatly preferred for the ergonomics it provides.
  • the handpiece 2 extends, for example, along a longitudinal axis X.
  • the jaw 3 extends, for example, along a longitudinal axis Yl.
  • the jaw 4 extends, for example, along a longitudinal axis Y2.
  • the device 1 may comprise a water reservoir 7 for producing steam, notably in the handpiece 2.
  • the reservoir 7 is preferably integrated into the handpiece 2 and in particular into one of the arms 5, 6.
  • the reservoir 7 is integrated into the arm 6 that comprises the steam outlet 21 which will be detailed later on. This makes it possible to have a device 1 that is particularly compact and has a relatively simple internal construction.
  • other implementations of the reservoir 7, for example in the other arm 5 or even completely remote from the handpiece 2 are entirely conceivable without departing from the scope of the invention.
  • a user interface may be present on the device 1, notably on the handpiece 2, to allow the user to control the operation of the device 1.
  • the handpiece 2 comprises a heated internal surface 14 for heating the hair that is to be treated on each of the two jaws 3 and 4 facing the other of the jaws and which face one another when the jaws 3 and 4 are in the close-together configuration such that a heated treatment zone is defined between them when the two jaws 3 and 4 are in the close-together configuration.
  • the two heated internal surfaces 14 are, for example, configured to grip between them the hair that extends between the two jaws 3 and 4 when the two jaws 3 and
  • the two heated internal surfaces 14 are substantially flat, but their configuration could be otherwise. They could be of complimenting wavy shapes or of complimenting curved shapes for example.
  • the heated internal surfaces 14 are, in the example illustrated, formed by the contact surface of internal plates 16 made of a heat-conducting material each extending over one of the jaws. Each internal plate 16 constitutes an internal treatment member of the device.
  • just one of the jaws 3 or 4 may bear an internal plate 16 having a heated contact surface facing an abutment surface of the other jaw 3 or 4.
  • the abutment surface may be formed by the body of the jaw or by an element added on to the jaw.
  • the handpiece 2 may comprise a jaw-configuration detection memberconfigured to detect the configuration of the jaws 3 and 4 and namely whether the jaws 3 and 4 are in the closed, treatment, configuration or in the open configuration, notably a Hall-effect sensor.
  • the plates 16 may be laterally offset on the jaws 3 and 4, i.e. not centred on the axes Yland Y2.
  • the handpiece 2 is asymmetric relative to a median plane P of the jaws 3 and 4 perpendicular to the heated internal surfaces 14 when in the closed configuration.
  • the device 1 comprises an additional hair treatment member 12 extending from the jaw 4 towards the other jaw 3 when the jaws 3 and 4 are in the close-together configuration, and arranged on said jaw 4 laterally with respect to the internal plate 16.
  • the jaw 3 is for example free of additional treatment.
  • the member 12 extends longitudinally and parallel to the longitudinal axis Y2 of the jaw 4 along an edge 13 of the internal plate 16 of the jaw 4 while being separate from this internal plate 16, when the device 1 is observed along its longitudinal axis X.
  • the jaw 4 may be free of any additional treatment member on the side corresponding to an edge 15 of the internal plate 16 opposite to the edge 13. This increases the asymmetry of the handpiece 2 relative to the median plane P.
  • the member 12 may comprise a steam outlet 21 and/or a comb 22, as illustrated in Figures 1 and 2.
  • the comb 22 may be arranged, preferably removably, in a housing such as a longitudinal slot 23, visible in Figure 2. The user may thus change or remove the comb 22, as required.
  • the slot 23 may have a rectangular transverse section and open onto the distal end of the jaw 4.
  • the comb 22 may comprise, in the distal part of the device 1, an element 24 enabling the comb 22 to be grasped as it is being introduced into the slot 23 or extracted therefrom.
  • the comb 22 may extend, for example, over the entire length of the guide portion. In a variant, it may extend over just part of the guide portion.
  • the steam treatment may be performed by means of a vaporization member consisting of a heating element heating an evaporation chamber supplied with water from a reservoir situated in one arm of the device, or in a variant from a remote reservoir.
  • the device may comprise an electrically driven pump, preferably a peristaltic pump, collecting from a water reservoir the water that is to be sent to the device 1.
  • the pump is for example as disclosed in publication FR 2 967 018.
  • the evaporation chamber may be produced in accordance with the teaching of application EP 2449909A1, or in some other way.
  • the evaporation chamber may be arranged on one of the arms, namely the lower arm 6 in the example considered, and the steam outlet 21 is provided on the same arm 6.
  • the steam outlet 21 may take the form of a spray line of elongate shape in a direction parallel to the longitudinal axis Y2.
  • the spray line may comprise several steam-spraying orifices, for example between four and ten orifices, preferentially seven, which are preferably equally distributed along the spray line and each of an axis oriented substantially perpendicular to the treatment median plane.
  • the vaporization member is electrically powered and a temperature sensor is advantageously arranged in the evaporation chamber.
  • the device is designed to keep the temperature of the evaporation chamber at a value comprised between 110°C and 130°C.
  • the teeth of the comb 22 may be of rectangular cross section.
  • the handpiece 2 is preferably asymmetric relative to the median plane P of the jaws 3 and 4 perpendicular to the heated internal surfaces 14 when in the closed configuration.
  • the hair is gripped between the jaws 3 and 4 and the handpiece 2 is moved along the lock of hair.
  • the asymmetry relative to the plane P causes asymmetric treatment of the hair.
  • the handpiece 2 can be used in four directions of use :
  • the first direction of use results in performing the following successive steps, with the jaw 4 beneath the jaw 3: combing, application of steam and heating.
  • the first and third treatments are performed from a front face Fl towards an opposite rear face F2; the second and fourth treatments are performed from the rear face F2 towards the front face F 1.
  • the first and third directions of use apply substantially the same treatment to the hair and the second and fourth directions of use perform substantially the same treatment on the hair.
  • the first and third directions of use are said to be optimal insofar as the quality of the treatment is better than that obtained with the other two directions of use, since the combing occurs before the application of steam and the heating. In effect, it allows a clear distinction to be made between three key steps in the treatment and shaping of the hair.
  • a first step the hair is combed and properly oriented and distributed across the entire treatment width by the comb.
  • a second step distinct from the first, the hair is treated with the steam, slightly dampening it in order to protect it and properly prepare it for the coming heat treatment.
  • a third step distinct from the previous two, the hair is thermally and mechanically treated by the combination of the temperature of the plates 16 and the pressure applied by the tongs formed by the arms 5, 6. This succession of three steps leads to an excellent styling result, while protecting the health of the hair. It will therefore be appreciated that using the device in a different direction, in this instance in the second and fourth directions of use, is not desirable, because it does not lead to the best results.
  • the handpiece 2 may have arrows 25 indicating the optimal direction to the user.
  • the device 1 comprises a lead 17 designed to be able to supply the energy needed for the operation of the device.
  • the lead 17 may thus be an electric lead, designed for connecting the device to the electrical mains.
  • the lead could also be a fluid lead designed to supply the device with fluid (for example water).
  • the lead 17 comprises, at its end connected to the handpiece 2, an elbow portion 19 between a first part 17a of the lead 17, which is preferentially rotatably connected to the handpiece 2, and a second part 17b which is fixedly connected to the electrical power supply.
  • the elbow portion 19 forms an angle of deviation a of approximately 45° between the parts 17a and 17b.
  • the elbow portion 19 has a median plane situated in a vertical plane.
  • the lead 17 has a rotary fixing 18 attaching it to the handpiece.
  • the rotary fixing 18 allows the lead 17 to be turned about an axis of rotation R, making the device easier to manipulate and to use by avoiding the creation of twists or tangles in the lead 17 while the device is being used.
  • the rotary fixing 18 is configured such that the rotational movement of the handpiece 2 is substantially independent of the rotation of the lead 17.
  • the lead 17 has a tendency to maintain its orientation with respect to the ground, i.e. the second part 17b will, in the same way as a pendulum, remain downmost with respect to the vertical, simply under the effect of its own weight.
  • the orientation of the lead 17 is advantageously kept substantially vertical, even when the handpiece 2 is turned about its longitudinal axis.
  • the axis of rotation R may be substantially parallel, or even parallel, to the longitudinal axis X of the handpiece 2.
  • the device 1 also comprises a sensor 30 sensing the rotation and/or position of the rotary fixing 18 and positioned in the rotary fixing 18 of the lead 17.
  • the sensor 30 is configured to supply information regarding the direction of use of the handpiece 2.
  • the senor 30 comprises a first part 31, which is fixed with respect to the handpiece 2, and a second part 32, which is fixed with respect to the lead 17.
  • the first and second parts 31 and 32 are mobile relative to one another in rotation about the axis R.
  • the first part 31 comprises, mounted in a support 33 made from an electrically insulating material, three electrical contacts 34a to 34c which are not electrically powered.
  • the contacts 34a to 34c are arranged about a circle of the same diameter on a first side 40 of the support 33.
  • the angular separation to a non-powered adjacent contact 34 is for example 90°.
  • the contacts 34a and 34b are positioned on the handpiece 2 opposite one another in a plane extending substantially between the jaws 3 and 4 when they are in the closed configuration.
  • the contact 34c is positioned on the handpiece 2 in the median plane P on the side corresponding to the jaw 3.
  • the contacts 34a and 34b are on the sides and the contact 34c is at the top.
  • the second part 32 comprises an electrical track 41 in the shape of an arc of a circle, for example extending over 180°.
  • the track 41 is electrically powered.
  • the electrical track 41 is positioned at the top of the second part 32 on the opposite side from the direction of deviation of the second part 17b of the lead 17, i.e. at the top with respect to the vertical.
  • Each contact 34a to 34c is connected to a pin 36 which passes through the support 33 to emerge on one side 42 thereof.
  • the ends 37 of the pins 36 on the side 42 are electrically connected to a microcontroller which, for the sake of clarity, is not depicted.
  • the pins 36 of the contacts 34a and 34b are connected to these contacts via circular-arc-shaped connectors 38.
  • the electrical track 41 is also connected to a pin 43 which passes through the support 33 to emerge on the side 42 thereof.
  • the end 44 of the pin 43 on the side 42 is electrically connected to the microcontroller which, for the sake of clarity, is not depicted, for measuring the voltage between the electrical track 41 and each of the contacts 34a to 34c.
  • the supply of power to the electrical track 41, not depicted, is at a voltage of 5 V.
  • the angular extent of the contact 34c is for example greater than that of the contacts 34a and 34b.
  • the track 41 is fixed with respect to the second part 32, it is rotationally mobile with respect to the electrical contacts 34a to 34c about the axis R.
  • the track 41 may or may not be in contact with the contacts 34a to 34c, and the contact or contacts 34a to 34c with which it is in contact depend on the directions of use indicated above.
  • Figures 5 a to 5 c illustrate the use of the handpiece 2 in the first direction
  • Figures 6a to 6c illustrate use in the second direction.
  • the hair C is treated from the root Ra toward the tips Po through a movement in a direction D.
  • the median plane T extending between the jaws 3 and 4 makes a non-zero angle P with the horizontal H.
  • the electrical track 41 is in contact with the contacts 34a and 34c.
  • the contact 34b is not in contact with the track 41.
  • the microcontroller is therefore able to measure a positive voltage on the contacts 34a and 34c and a zero voltage on the contact 34b.
  • the microcontroller is therefore able to measure a positive voltage on the contacts 34b and 34c and a zero voltage on the contact 34a.
  • the contact 34c is no longer in contact with the track 41
  • the contact 34b is in contact with the track 41 in the third direction of use
  • the contact 34a is in contact with the track 41 in the fourth direction of use.
  • the microcontroller is able to supply data indicative of the orientation of the handpiece with respect to the horizontal.
  • the orientation is characteristic of the direction of use, notably ranges of orientations, as has just been illustrated
  • the microcontroller is able to supply data indicative of the direction of use of the handpiece 2.
  • These data are then processed by a processor, not illustrated, which is able from this sensor data to determine information regarding the direction of use, notably to determine that the handpiece 2 is being used in the optimal direction of use, here the first and third directions of use.
  • the device 1 may comprise a user-alert member, not visible in the figures, configured to receive the information regarding the direction of use of the handpiece 2 and to emit, for at least one direction of use, notably for a direction different from the optimal direction of use, a user alert, notably a signal perceptible to the user, notably an audible, visual or haptic signal.
  • a user-alert member not visible in the figures, configured to receive the information regarding the direction of use of the handpiece 2 and to emit, for at least one direction of use, notably for a direction different from the optimal direction of use, a user alert, notably a signal perceptible to the user, notably an audible, visual or haptic signal.
  • the track 41 is not electrically powered, rather it is the contact 34c that is electrically powered, notably at a voltage of 5 V.
  • the track 41 is thus able to create an electrical bridge circuit between the contact 34c and the contacts 34a or 34b, when the two contacts are in contact with the track 41.
  • the range of orientations of the rotary fixing 18 is determined by measuring the voltage on the contacts 34a and 34b.
  • the two opposite measurement contacts 34a and 34b are substantially on the median plane P and the powered contact 34c is on the longitudinal plane extending between the jaws when in the closed configuration.
  • the contact 34a is on the side corresponding to the jaw 4, and the contact 34c is on the side corresponding to the comb 22.
  • the voltage on the contact 34b in the first direction of use, the voltage on the contact 34b will be positive and the voltage on the contact 34a zero. In the second direction of use, the voltage on the contacts 34a and 34b will be negative.
  • the voltage on the contact 34a will be positive and the voltage on the contact 34b zero.
  • the voltage on the contacts 34a and 34b will be zero. It is thus possible, by adapting the positioning of the sensors, to determine the directions of the use leading to substantially one and the same optimal treatment from the directions of use leading to a degraded different treatment.
  • the angular separation between the contacts 34a to 34c, measured at the centre of the contacts is smaller, for example equal to 45°.
  • the electrical track covers an angular extent of 90°.
  • the first part comprises a single non-powered contact 34 and the second part comprises an electrically powered electrical track 41, notably is connected to the mains.
  • the contact 34 on the handpiece 2, extends in a plane passing between the jaws 3 and 4 when they are in the closed configuration.
  • the track 41 has an angular extent of 180° and is positioned on the side corresponding to the lead 17. Thus, the ends of the track 41 are comprised in a vertical plane.
  • the microcontroller determines that the handpiece is being used in a first direction when a positive voltage is measured on the contact 34, namely when one of the lateral edges of the jaws is higher than the other, notably the one furthest from the comb and/or from the steam outlets, or is being used in another direction when a zero or neutral voltage is measured on the contact 34, namely when the other lateral edge of the jaws is uppermost, notably the one closest to the comb and/or to the steam outlets.
  • the two directions of use do indeed correspond to different treatments.
  • the angular extension of the electrical track 41 thus determines the ranges of orientation of the determined first and second directions of use.
  • the treatment to be performed is a straightening.
  • the treatment to be performed is a curling.
  • the device 1 is electrically powered by plugging the lead 17 into a mains outlet.
  • the user positions a lock of hair between the jaws 3 and 4, the jaws being in the open configuration.
  • the handpiece 2 is notably positioned near the root of the hair.
  • the user then brings the jaws 3 and 4 into the closed configuration in a third step.
  • the jaw-configuration detection member detects this and sends a signal either to the alert member or to the sensor 30 in order thatdetection of the direction of use begins.
  • the signal could also be transmitted to any other logic unit of the device, provided that this logic unit is capable of causing detection of the direction of use to begin.
  • the user has oriented the handpiece 2 by modifying its inclination with respect to the terrestrial horizontal H, and this, as has been explained, generates a position, rotation and/or orientation of the rotary fixing.
  • the sensor 30 determines the direction of use.
  • This detection is performed by the microcontroller measuring the voltage on the contact or contacts 34.
  • the senor determines a direction of use from among at least two directions.
  • the sensor 30 then transmits information regarding the direction of use of the handpiece 2 to the alert member.
  • the alert member may not emit any signal perceptible to the user.
  • the alert member may emit a signal perceptible to the user, for example a visual, audible or haptic signal or a combination thereof.
  • the method may comprise a step of correctly re-orientating the handpiece 2 relative to the hair.
  • the handpiece 2 is moved along the hair from the roots towards the tips in order to perform, on a given region of the lock of hair, the following steps: combing, application of steam and heating.
  • the number of treatment steps, the type of treatment and the order of the treatments may differ.
  • the method may comprise a step of applying a cosmetic product.
  • the handpiece may comprise heated external surfaces for curling the hair by winding it around the handpiece and/or around one of or the jaws.
  • the angular separation between two contacts may be different, for example comprised between 20° and 200°.

Landscapes

  • Surgical Instruments (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

L'invention concerne un dispositif de traitement de cheveux (1) comprenant : - une pièce à main (2) apte à traiter une mèche de cheveux en se déplaçant le long d'une mèche de cheveux à partir d'une racine vers une pointe, le dispositif (1) ayant une première direction d'utilisation dans laquelle la mèche se déplace à partir d'une face avant vers une face arrière opposée, et une seconde direction d'utilisation dans laquelle la mèche se déplace à partir de ladite face arrière vers la face avant opposée ; - au moins un cordon d'alimentation électrique (17) ayant une fixation (18) le fixant à la pièce à main, qui est apte à tourner par rapport à la pièce à main (2) ; - un capteur de direction d'utilisation (30) configuré pour fournir des données indicatives de la direction d'utilisation de la pièce à main (2) au moins parmi les première et seconde directions d'utilisation, ledit capteur (30) étant positionné dans la fixation (18) rotative du cordon (17).
PCT/EP2024/079893 2023-10-25 2024-10-23 Dispositif et procédé de traitement de cheveux Pending WO2025087942A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2311585A FR3154578B1 (fr) 2023-10-25 2023-10-25 Dispositif de traitement de la chevelure
FRFR2311585 2023-10-25

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Publication Number Publication Date
WO2025087942A1 true WO2025087942A1 (fr) 2025-05-01

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FR (1) FR3154578B1 (fr)
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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2449909A1 (fr) 2010-11-05 2012-05-09 Seb S.A. Appareil de coiffure à vapeur
FR2967018A1 (fr) 2010-11-05 2012-05-11 Seb Sa Appareil de coiffure a pompe peristaltique
WO2012111898A1 (fr) * 2011-02-18 2012-08-23 Lee Seung-Soo Fer à lisser
JP2015009088A (ja) * 2013-07-02 2015-01-19 パナソニック株式会社 ヘアアイロン
WO2016161259A1 (fr) 2015-04-03 2016-10-06 Schawbel Technologies Llc Systèmes de chauffage portables
EP3178347A1 (fr) 2015-12-09 2017-06-14 Braun GmbH Appareil de mise en forme de cheveux
US20170231353A1 (en) 2016-02-12 2017-08-17 Gaetano Romeo Hair styling devices and methods of use
KR20170122407A (ko) 2016-04-27 2017-11-06 김현철 모션 센서를 이용한 헤어아이론
EP3429420A1 (fr) 2016-03-17 2019-01-23 WIK Far East Ltd. Appareil de mise en forme pour le frisage ou l'ondulation des cheveux ainsi que procédé permettant de faire fonctionner un tel appareil de mise en forme des cheveux
WO2019217092A1 (fr) * 2018-05-08 2019-11-14 Helen Of Troy Limited Appareil de coiffure à soupape de flux d'air directionnel et gaz comprimé
EP3068258B1 (fr) * 2013-11-12 2021-01-27 Jemella Limited Appareil de coiffure
KR20210016993A (ko) 2019-08-06 2021-02-17 윤석신 모발의 손상을 방지하는 다기능 헤어툴

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2449909A1 (fr) 2010-11-05 2012-05-09 Seb S.A. Appareil de coiffure à vapeur
FR2967018A1 (fr) 2010-11-05 2012-05-11 Seb Sa Appareil de coiffure a pompe peristaltique
WO2012111898A1 (fr) * 2011-02-18 2012-08-23 Lee Seung-Soo Fer à lisser
JP2015009088A (ja) * 2013-07-02 2015-01-19 パナソニック株式会社 ヘアアイロン
EP3068258B1 (fr) * 2013-11-12 2021-01-27 Jemella Limited Appareil de coiffure
WO2016161259A1 (fr) 2015-04-03 2016-10-06 Schawbel Technologies Llc Systèmes de chauffage portables
EP3178347A1 (fr) 2015-12-09 2017-06-14 Braun GmbH Appareil de mise en forme de cheveux
US20170231353A1 (en) 2016-02-12 2017-08-17 Gaetano Romeo Hair styling devices and methods of use
EP3429420A1 (fr) 2016-03-17 2019-01-23 WIK Far East Ltd. Appareil de mise en forme pour le frisage ou l'ondulation des cheveux ainsi que procédé permettant de faire fonctionner un tel appareil de mise en forme des cheveux
KR20170122407A (ko) 2016-04-27 2017-11-06 김현철 모션 센서를 이용한 헤어아이론
WO2019217092A1 (fr) * 2018-05-08 2019-11-14 Helen Of Troy Limited Appareil de coiffure à soupape de flux d'air directionnel et gaz comprimé
KR20210016993A (ko) 2019-08-06 2021-02-17 윤석신 모발의 손상을 방지하는 다기능 헤어툴

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