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
  • A45D1/06—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with two or more jaws
  • A45D1/08—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with two or more jaws the jaws remaining parallel to each other during use, e.g. the jaws sliding parallel to each other
• • 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
  • A45D2/38—Surface-wave devices
  • A45D2/40—Surface-wave devices as hair-pressing tongs

Definitions

• the present invention relates to a hair styling device or hair shaping, more particularly to the type to curl or straighten the hair comprising a housing connected to at least one rotary heating body to perform the shaping of the hair by heat.
• Most hair shaping apparatus such as hair straighteners, curling irons, embossing, comprise a handle supporting two mechanical elements of which at least one is heated, the other being intended to bring the hair in contact with the first, in particular from an open position allowing the insertion of the hair to a closed position for their contact with the heating part.
• the passage from the open position to the closing position is done manually by pressing a lever for opening a tongue of pressure of the hair or by pressing two articulated arms of the apparatus towards each other to bring the heating part in contact with the hair.
• the heating body of the apparatus can be fixedly mounted relative to the handle or mobile.
• WO 2005/082198 is known which is a clamp comprising two jaws pivoting about an end articulation.
• Each jaw comprises a heating roller, smooth or toothed, mounted free to rotate about its longitudinal axis which corresponds to that of the jaw.
• the user inserts a lock of hair between the two rollers, then she closes the clamp and down along the wick to the tip thereof.
• the disadvantage of this device is that the hair treatment time is variable, it is directly related to the speed of the rollers, which depends on the speed of movement of the device along the wick.
• the treatment time was too short and, therefore, the hair was not properly shaped, while moving too slowly caused overheating and even burning of the hair.
• WO 02/058503 describes an apparatus for smoothing or curling hair comprising a handle provided with two pivoting jaws and each supporting a treatment roller, one of the rollers being driven in rotation by an electric motor of the handle, the other being rotatably mounted, the latter enclosing a heating element.
• the jaws are opened to insert a lock of hair between the treatment rollers, then the apparatus is closed and the motor is turned on to drive the rollers.
• the problem with this device is that the user can not guarantee neither the contact time, nor the contact pressure between the roller and the hair necessary to obtain the shaping of the hair.
• the desired values to achieve a treatment can be obtained after several successive tests on the hair, which already creates undesirable effects in the hair, certainly not uniform or even harmful.
• the treatment of a wick is not uniform in its mass, the parallelism of the rollers strongly depending on the thickness of the wick with a direct consequence on the variability of the wick. the pressure applied as a function of its spreading between the rollers.
• the object of the present invention is to provide a hair styling device capable of achieving hair shaping that is good quality, durable, uniform appearance throughout the hair, while being easy and convenient to use.
• Another object of the invention is to provide a hair styling device capable of ensuring a good heat transfer between the heating part of the appliance and the hair, while ensuring the protection thereof and having increased reliability in operation. .
• Another object of the invention is to provide a hair styling device capable of guaranteeing a good contact pressure between the shaping means and the hair during the treatment.
• Another object of the invention is a hairdressing device of simplified structure, compact and can be industrialized for a low cost.
• Another object of the invention is to develop a new method for treating human hair making it possible to obtain an improvement in the visual properties of treated hair with rapid and easy to implement steps which are constant and persistent at least before washing the hair.
• a hairdressing apparatus having two jaws, the hair being able to be inserted between the two jaws, one of their ends forming a handle and each supporting at the other end a treatment roller arranged with the possibility of rotation around it.
• the apparatus comprises means for actuating at least one roller having an outer diameter of between 22mm and 38mm for him to print a speed of rotation between 12 rpm and 30 rpm, the temperature of the roller at the level of the area of contact with the hair being between 140 ° C. and 230 ° C., preferably 200 ° C.
• This apparatus is of the type comprising two jaws, each jaw comprising a treatment roller of which at least one is heating or, alternatively, the two treatment rollers are heated, the rollers being rotated about the longitudinal axis of each jaw.
• the hair can be inserted between the two jaws, either by mounting the two pivoting jaws around a hinge axis perpendicular to the longitudinal axis of the device, or parallel and mobile in translation, where in each case a spring is provided to push the jaws in a position spaced apart from each other, the jaws being approximated by the user.
• the two parallel mounted fixed jaws in a common housing, and where one of the rollers is mounted floating, for example by means of suspension springs with respect to its jaw, the apparatus having a leading portion with a chamfer for introducing the hair between the two rollers.
• the hair is introduced between the rollers and, when the jaws are brought together, the hair is shaped by calendering, passing it between rotating processing rolls.
• the apparatus comprises means for actuating at least one roll of predetermined dimensions to print a predetermined passage rate on the hair, for a predetermined temperature of heating the roller or rollers in contact with the hair.
• the heating element of the treatment roller may be of the resistive electric type, with PTC, or with the gas being able to develop a temperature of between 140 ° C. and 230 ° C.
• the material of the treatment roller is metallic, for example aluminum, with a wall thickness of at least 1/6 of its diameter giving it good thermal inertia.
• the width of the rolls has been chosen to be greater than that of a lock of hair to be treated.
• Such a temperature of the rollers ensures a good and durable shaping of the hair during their passage at a predetermined speed between two mobile rollers.
• the apparatus of the invention performs a continuous shaping of the hair by passing them between two entrained calenders so as to provide a predetermined speed of passage on the hair, which results in a rapid shaping, uniform and persistent of all the treated hair which is also protected against overheating.
• said actuating means comprise a brake cooperating with a roller mounted free to rotate.
• the rollers are rotatably mounted in their bearings within each jaw and are rotated during the manual movement of the device along the wick to be treated.
• the brake cooperating with one of the rollers then makes it possible to limit the speed of passage of the hair between the rollers.
• a brake may be, for example an inertia brake based on the principle of winding a spring on an axis of rotation so that the braking force is proportional to the speed of movement of the device the along the wick.
• an adjustment of the braking force to adapt it to different types of shaping of the hair.
• Other brakes proportional to the movement can be envisaged, such as for example: a grease brake, a brake shoes rubbing against a cylindrical wall.
• an electric or electromagnetic brake One could also consider the use of an electric or electromagnetic brake.
• said actuating means comprise an electric motor for driving one of the rollers.
• the apparatus according to this embodiment comprises a motorized roller, the other being able to be rotatably mounted in its bearings within the jaw.
• the advantage of this solution is that the electric motor makes it possible to guarantee a constant speed of passage of the hair between the calendering rollers, and without any displacement force, the hair being driven by the rollers.
• rollers are smooth.
• This device then performs a smooth, continuous, uniform and fast hair.
• the jaws are movably mounted between an open position and a closed position, one of the jaws comprising a toothed toothed roller engaging with the teeth of the roller of the other jaw.
• the rolls have an outer diameter of between 22 mm and 38 mm, they have between 7 and 25 teeth and are driven at a speed of between 12 rpm and 30 rpm.
• the jaws are movably mounted between an open position and a closed position and the apparatus comprises means for detecting the closed position of the jaws.
• These detection means then make it possible to verify that the rollers are in contact with the hair in order to be able to start the treatment. This makes it possible to start the treatment if the conditions of a good operation are fulfilled (for example this makes it possible to check that there is no wick too thick between the rollers or that there is no bar or other foreign object inserted between the rolls).
• These detection means may advantageously be operably connected to control means which would be brought for example to automatically start the drive motor of the roller.
• said detection means comprise an electrical switch having a tripping stroke of between 0 and 4 mm.
• the jaws are movably mounted between an open position and a closed position and the apparatus comprises means for locking the jaws.
• said locking means comprise an electromagnet.
• electromagnet can be powered during the treatment of the hair, the pressing of a button can quickly disable it and the jaws open under the push of a spring.
• said rollers are removably mounted relative to the handle.
• rollers smooth or striated with the same apparatus, electrical and / or mechanical connectors then being provided between the rollers and the housing of the device.
• each roller comprises a heating element connected to a means for controlling its temperature.
• each roller with a heating element having its own means for adjusting its temperature makes it possible, on the one hand, to have the appliance be warmed more rapidly and, on the other hand, to be able to vary the temperatures of each roll and subsequently obtain different effects in shaping the hair.
• the invention also relates to a method for treating human hair comprising a step of introducing hair between two jaws mounted movable relative to each other, each supporting a treatment roller mounted with the possibility of rotation around its longitudinal axis, since it consists of:
• Such a method therefore makes it possible to apply a constant speed to the treated hair, a speed which is adapted to the dimensions of the roll and to the heating temperature thereof, thereby obtaining a uniform and continuous hair treatment.
• the method of the invention comprises an additional step of detecting the closed position of the jaws before ordering driving the rollers.
• FIG. 1 is a side view of an apparatus according to a preferred embodiment of the invention, the apparatus being in the rest position;
• FIG. 2a is a longitudinal sectional view of the apparatus of FIG.
• Figure 3a is a longitudinal sectional view of an apparatus according to another embodiment of the invention illustrated in the working position
• Figure 3b is a cross-sectional view taken with the plane B-B of Figure 3a.
• FIGS. 4a to 4f illustrate some examples of toothed rollers corresponding to alternative embodiments of the apparatus of the invention.
• the apparatus of Figure 1 is a curling iron according to a preferred embodiment of the invention, the apparatus being illustrated in the open position or rest.
• the apparatus comprises two jaws 2, 3 pivotally mounted about a hinge 5, forming a handle 1 of the clamp type and provided at the rear with a tip 6 adapted to receive a rotary connector for a power supply cable.
• main electric (not shown in the figures).
• Each jaw 2, 3 comprises a hollow housing 7, 8 adapted to receive a roll 10,11 at its front end 4.
• the housings 7,8 are advantageously made of a plastic material by an injection technique.
• a button 12 is provided on one side of the housing to select the direction of rotation in the roller drive, as will be explained later.
• the apparatus can receive a lock of hair to be treated introduced between the rollers 10, 11, the apparatus then being closed by exerting a pressure on the jaws 2, 3 which are held in closed position by locking means 14 actuated by a button 15 locking / unlocking.
• Figure 2a illustrates a longitudinal sectional view of the apparatus of Figure 1, shown in closed or working position.
• the roller 10 is rotatably mounted about the longitudinal axis 20 of the jaw 2 while being held in bearings 21 within the housing 7.
• the roller 10 encloses a heating element 18 which may be an electrical heating element of the resistive type , CTP, infrared, etc. powered by a rotary connector 19 receiving power from the main cable of the apparatus.
• the heating element 18 is placed in the center of the roll 10 while being in thermal contact with the body of the roll in order to fully transfer its calories to it.
• the roll is made of a metal material which is a good heat conductor of the aluminum type or its alloys, copper or alloys, or steel.
• the temperature of the roll 10 in operation is between 140 ° C. and 230 ° C. and is preferably set at 200 ° C.
• the roller 11 is rotatably mounted about the longitudinal axis 23 of the jaw 3 being supported in bearings 24 within the housing 8 thereof, being itself rotated by a geared motor 25 receiving the supply of the main cable of the device.
• the geared motor 25 develops a driving torque of the roller 11 between 2000 g * cm and 12000 g * cm, preferably 5500 g * cm.
• the roller 11 is made of a metal material which is a good heat conductor of the aluminum type or its alloys, copper or alloys, or steel. In a variant, the roll 11 could contain an electric heating element of the same type as that of the roll 10.
• the rollers 10, 1 1 have predetermined dimensions chosen in relation to the speed of the output shaft 26 of the geared motor 25 so as to print to the roller 11 a speed of rotation, which is, in this for example, the speed of the output shaft 26 of the geared motor 25 and is between 12 and 30 rpm.
• This motor roll directly drives the free roll 11 in rotation, the two rollers having an outside diameter between 22mm and 38mm.
• the rollers 10, 11 may have a smooth surface more suitable for smoothing the hair.
• the rollers have an outer diameter equal to 26.5 mm and a wall thickness of between 3 mm and 7 mm, preferably equal to 5 mm.
• the outer surface of the rollers may be covered with an elastomeric material allowing it to better adapt to the thickness of the lock of hair to be treated.
• the length of a roll is between 60mm and 70mm.
• the roller 10 mounted free to rotate has the same shape and dimensions as the roller 11 and rotates at the same speed as the latter, but in a contrary direction.
• rollers illustrated in the figures are crenellated, their periphery being provided with mutually engaging teeth 27 and 28 respectively (FIG. 2b) and are intended to produce waffles in the hair.
• Each roll 10, 11 comprises between 7 and 25 teeth, the roll 10 having the same number of teeth as the roll 11.
• Figure 4a illustrates a so-called large diameter roller being provided with 8 teeth making an angle at the top of 30 °.
• the roller of Figure 4a has an outer diameter or head of teeth of 37.3mm and a foot diameter of 19.6mm.
• the roller of Figure 4b is also a roll of large diameter, the head diameter is equal to 37.3 mm, but it has 7 teeth.
• Detail B of Figure 4b shows an enlarged view of the top of a tooth and detail C shows an enlarged view of the tooth base of the roller of Figure 4b.
• FIG. 4c illustrates another type of roller, called medium diameter, having a head diameter of 27.3 mm, a root diameter of 19.5 mm and having 10 teeth, the angle at the top of a tooth being 50 ° .
• Figure 4d illustrates a so-called small diameter roller, having a head diameter of 25.9mm, a root diameter of 21.1mm and having 25 teeth, the apex angle of the teeth being 23 °.
• Figure 4e illustrates a large diameter flat-toothed roll.
• the roller has 8 teeth, has a head diameter of 37.3mm, a root diameter of 18.9mm, the angle at the top of the teeth is 20 °.
• the teeth are flattened, for example a distance of 2mm at the top so as to print a flat streak pattern in the wavelets from the embossing.
• the top and the base of the teeth have 0.5mm connecting radii, as visible in details B and C of Figure 4e.
• Figure 4f illustrates a large diameter roller with rounded teeth.
• the roller has 8 teeth, has a head diameter of 33mm, a foot diameter of 23.4mm.
• the teeth are rounded, the top and base of the teeth have 2.8mm connecting radii, as seen in details B and C of Figure 4f.
• Such rounded teeth are able to print a pattern with ripples uniform and well marked during embossing.
• the rollers 10, 11 are removably mounted in their supports within the jaws 2, 3.
• the rollers illustrated in Figures 4a to 4f all have the same internal diameter of fixing around a heating element, about 12mm.
• the shape obtained in the embossing wavelets depends on the profile of the teeth and their dimensions.
• the roll of Figures 4a, 4b prints ripples spaced and deep, while that of Figure 4d, mark him, small undulations in the hair.
• the apparatus is provided with detection means 30 (FIG. 1) for detecting the closed position of the jaws 2, 3.
• the detection means comprise a switch 31 mounted in the housing 8 of the jaw 3 actuated by a protrusion 32 vis-à-vis belonging to the housing 7 of the jaw 2.
• the protrusion 32 is supported on the upper part of the switch 31 and closes the contacts of the latter, which has the effect of automatically switching on the geared motor 25.
• the switch 31 is set to take into account the thickness of a lock of hair introduced between the rollers 10,11. Thus, this trigger stroke is between 0 and 4mm.
• the switch 31 is arranged in the vicinity of one end of the treatment rollers, in order to detect the good condition of closure of the jaws at this level.
• the switch 31 is situated at the front end of the jaw 3 or the roll 11.
• the rollers 10,11 are removably mounted and, therefore, the switch 31 is advantageously arranged at the rear end of the roller 11, towards the center of the jaw 3, so that the wiring is kept only on the fixed part of the jaw 3, the roller 11 coming to connect, at its rear end, in the power supply plugs provided for this purpose in the same non-removable part of the jaw 3.
• each jaw housing 7, 8 may advantageously comprise indentations (not shown in the drawings) preferably made of a soft-touch material allowing the user's fingers to bear in order to bring the ends into contact with one another. jaws against each other and thus facilitate the closure of the jaws.
• the locking means 14 hold the jaws 2 and 3 in position closed when the user activates a button 15.
• pressing the button 15 triggers the supply of an electromagnet 16 for the duration of treatment. Pressing the button 15 again deactivates the supply of the electromagnet 16 and the jaws automatically open by being pushed by a compression spring arranged around the hinge 5.
• the apparatus has a general shape of a clamp comprising two jaws pivoted about an end joint. Starting from the pivoting articulation in the direction of the free end of the jaws, there are, in order, the locking means 14, then the geared motor 25, the active part comprising the treatment rolls 10 and 11, then finally the detection means 30 of the closed position of the jaws 2, 3 (or, alternatively, the detection means are arranged before the treatment rollers 10,11 starting from the handle).
• This addition of functions in series makes it possible to lengthen the arms so that the rollers are closed even more in parallel (with respect to a scissors-type apparatus), which makes it possible to spread a lock of hair flat and easily. thus improve its treatment.
• the user begins by choosing the direction of rotation of the motor that determines the direction of movement of the device relative to the hair to be treated. It then inserts a lock of hair inside the device, between the rollers 10 and 11 and closes the device by bringing the jaws 2 and 3 closer together.
• the geared motor 25 drives the roller 11 which in turn drives the roller 10 at the right speed allowing the teeth 27 and 28 to print a wave shape in the treated hair.
• the user activates the locking means in the closed position of the jaws by actuating the button 15.
• the other roller when only one of the rolls has a heating element, the other roller is at a lower temperature than the first, because it is heated only by contact and by the interposition of the lock of hair to be treated therewith. As a result, the less heated roller prints very lightly a relief in the hair.
• the warmer roller by orienting, during the treatment, the warmer roller towards the inside of the lock of hair, it is possible to confer more relief on the inner part of the lock and less on the outer part, which has the effect of inflating more the inner part and thus give volume to the hairstyle.
• FIGS. 3a and 3b illustrate another embodiment of the invention in which the components having the same function have kept the same reference numbers as those of the preceding figures.
• the apparatus is shown in the closed or working position and comprises two jaws 2 and 3 pivotally mounted about a hinge 5, each jaw supporting rollers 10, 11.
• each roll 10, 11 is freely mounted. in rotation in bearings 21, respectively 24, of its housing 7, respectively 8.
• Each roller 10, 11 contains an electric heating element 18 receiving the supply via a rotating connector 19.
• the roller 10 rotate freely when the apparatus is manually moved by the user along a wick.
• the roller 10 comprises a brake 35 at the end of its rotation shaft which limits its speed of rotation.
• the brake 35 is an inertia brake comprising a spiral spring 36 whose turns wind on an axis 37, so that the braking force is proportional to the rotational speed of the roller and therefore to the displacement of the device. along the wick.
• the rollers 10, 11 have the same constructive and functional parameters as those of the apparatus previously described.
• the brake 35 is then provided to limit the rotational speed of the rolls at maximum 30 rpm. In order to prevent the user from holding the device motionless in the hair, a continuous movement of the device would be imposed and indicated by an auditory or luminous signal.
• the user inserts a lock of hair inside the apparatus between the rollers 10 and 11 and closes it by bringing the jaws 2 and 3 closer together.
• an automatic closing device for example using an electromagnet, keeps the apparatus closed.
• the brake limits the speed of the rollers 10 and 11 which then rotate at the correct speed, pre-set by calibrating the brake, and allow the teeth 27 and 28 to print a wave shape in the treated hair.
• the user presses an unlocking button and the jaws open automatically by being pushed by a compression spring wound around the joint 5.
• the apparatus may be provided with a protection device in case of overload of the electric drive motor of one of the rollers.
• a protection device in case of overload of the electric drive motor of one of the rollers.
• a device for measuring the intensity of the motor detects the exceeding of a threshold threshold due, for example, to the arrival of the motor. device in abutment against the scalp when it is moved on the wick of the tip towards the hairline.

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• Hair Curling (AREA)
• Surgical Instruments (AREA)
• Laser Surgery Devices (AREA)
• Prostheses (AREA)

Applications Claiming Priority (2)

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• 2007
  • 2007-03-16 FR FR0701917A patent/FR2913570B1/fr active Active
• 2008
  • 2008-03-14 EP EP08787794A patent/EP2120629B1/de active Active
  • 2008-03-14 AT AT08787794T patent/ATE509542T1/de not_active IP Right Cessation
  • 2008-03-14 ES ES08787794T patent/ES2366600T3/es active Active
  • 2008-03-14 CN CN2008900000372U patent/CN201541948U/zh not_active Expired - Lifetime
  • 2008-03-14 WO PCT/FR2008/000338 patent/WO2008132345A2/fr active Application Filing

Non-Patent Citations (1)

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