FR2978333A1 - ELECTRIC HAIR BRUSH WITH NON-CYLINDRICAL ACCESSORY - Google Patents

Abstract

The invention relates to an accessory (1) intended to fit on an electric airflow hairdressing appliance (100) comprising: a hollow sleeve (10) having a longitudinal axis (L) capable of being mounted on the hairdressing apparatus (100), the sleeve (10) comprising a set of bristle tufts (11, 11 ', 11 ") and a set of through apertures (12) capable of passing the air flow, characterized in the sleeve (10) has a symmetrical outer surface in at least the first plane (P1) containing the longitudinal axis (L) and a second plane (P2) containing the longitudinal axis (L) and orthogonal to the foreground ( P1) and characterized in that the cutting of the outer surface (Sext) of the sleeve (10) in a plane orthogonal to the longitudinal axis (L) defines a closed curve (C) having a minor axis (r) contained in the foreground (P1) and a major axis (R) contained in the second plane (P2), the major axis ratio divided by minor axis (R / r) being greater than greater than or equal to 1.1.

Description

FIELD OF THE INVENTION The invention relates to the field of electrical hair shaping apparatus for forming blow-through corrugations and comprising a hot-air fan and a hair-brush. driven in rotation by an electric motor and traversed by a flow of air generated by the hot air fan, with a hollow sleeve and brush bristles emerging from the sleeve. The invention particularly relates to an accessory intended to adapt to such electrical shaping apparatus.

Such hair shaping apparatuses serve to form waves in the hair of a person. The shaping of the hair is then provided by a hair brush, assisted by a hot air flow that carries the heat necessary for shaping to the hair. This brush can be rotated manually by the user or automatically by an electric motor. The corrugations are formed while the brush is rotating manually or motorized, rotating the hairbrush in the hair to be shaped. The hair to be shaped in a loop is wrapped following the rotary training of the hair grasped by the bristles and / or the surface of coating of the hairbrush, consecutive to the rotation of the hairbrush.

Prior art US 4,023,578 discloses an electric hair shaping apparatus with a hairbrush disposed on a handle for forming corrugations in the hair and having a device for producing hot or cold airflow. For this purpose, the hair is wrapped around the sleeve. The hairs of the hair shaping apparatus protrude about 4 to 5 mm from the surface of this sleeve. US 3,894,549 discloses a hair shaping apparatus where the winding and shaping around the hairbrush is rotated by an electric motor. The hair shaping apparatus has a motorized rotary sleeve relative to the handle having apertures of the oblong hole type along the longitudinal extent of the sleeve which are traversed by the rows of teeth or retractable bristles.

The purpose of the present invention is to overcome the aforementioned drawbacks, to fulfill the aforementioned objectives and to provide an electric hairbrush and an electric hairbrush accessory capable of achieving good shaping of the hair, uniform and durable, all being of a fast and easy use in operation.

Another object of the invention is to provide an apparatus which can form more or less pronounced corrugations and which can improve the result of the brushing on its behavior over time.

Another object of the invention is to provide a new device that can adapt to all hair lengths.

Another objective is to reduce the manufacturing costs of such accessories.

Another object of the invention is to provide an accessory and an electric hairbrush able to pass a uniform and powerful air flow towards the hair to improve the appearance of the treated hair and reduce the time of hair treatment, to increase the holding of the result obtained.

Another object of the invention is to provide an accessory and an electric hairbrush that are effective, simplified structure, compact.

These objectives are achieved according to the invention by an accessory for hair shaping apparatus adapted to fit on an electric air flow hairdressing apparatus comprising: a hollow sleeve having a longitudinal axis (L) capable of mounting on the hairdressing apparatus, the sleeve comprising a set of bristle tufts and a set of through openings capable of passing the air flow, wherein the sleeve has a symmetrical outer surface according to at least the first plane containing the longitudinal axis and a second plane containing the longitudinal axis and orthogonal to the foreground and wherein the section of the outer surface of the sleeve in a plane orthogonal to the longitudinal axis defines a closed curve having a small axis contained in the first plane and a major axis contained in the second plane, the major axis ratio divided by minor axis being greater than or equal to 1.1.

These objectives are also achieved by an electric air-flow hairdresser comprising an air inlet, a heating element, a fan, a fan drive means and a blown air outlet section, characterized in that it comprises a hairdressing accessory according to the invention.

The main aspects of the invention are the following: The invention relates to an accessory (1) intended to fit on an electric air-flow hairdressing appliance (100) comprising: a hollow sleeve (10) having an axis longitudinal shaft (L) capable of mounting on the hairdressing apparatus (100), the sleeve (10) comprising a set of bristle tufts (11, 11 ', 11 ") and a set of through-openings (12) capable of to pass the air flow, characterized in that the sleeve (10) has a symmetrical outer surface in at least the first plane (P1) containing the longitudinal axis (L) and a second plane (P2) containing the longitudinal axis (L) and orthogonal to the foreground (P1) and characterized in that the section of the outer surface (Sext) of the sleeve (10) in a plane orthogonal to the longitudinal axis (L) defines a curve (C) closed member having a minor axis (r) contained in the first plane (P1) and a major axis (R) contained in the second plane (P2), e main axis ratio divided by minor axis (R / r) being greater than or equal to 1.1.

This form of section with small axis and major axis, for example oval, in section orthogonal to the axis of symmetry (S) of the sleeve makes it possible to no longer provide, as for a body with orthogonal section circular or round of the prior art , a constant effort on the lock of hair. The different external shape of the circular shape allows, when the accessory is rotated, manual or automatic, to provide traction and / or tension on the wick which is not constant and which is stronger when the wick is attached to one end of the oval brush: this enhances the effect and durability of the brushing. In addition, the lock of hair will remain in contact with a larger surface so that the hair in contact with the surface will be longer subjected to traction and air blowing. This allows to reproduce at best the gesture of the professional who makes the brushing with a brush in the hand and a hair dryer in the other hand. For a complete rotation, the printed movement has twice the same treatment of the lock of hair.

By outer surface of the sleeve or each body is meant the surface that is intended to be in contact with the lock of hair to be treated. This shape in section orthogonal to the longitudinal axis of the accessory makes it possible to no longer provide, as for a body with orthogonal circular or round section of the prior art, a constant force on the lock of hair. The outer shape other than circular allows, when the accessory is driven in manual or automatic rotation, to provide traction and / or tension on the wick that is not constant and thus enhance the blow-drying effect. This also allows to reproduce at best the gesture of the professional who makes the brushing with a brush in the hand and a hairdryer in the other hand. This accessory is innovative in that its sleeve does not present, like known blower hairdressers, a tubular shape of a constant radius.

The section of the sleeve orthogonal to the longitudinal axis can be of any geometric form from which we can define a small axis r of the oval and a major axis R of the oval for the proper understanding of the invention.

The term "bristles" means any type of hair, natural or synthetic, of for example plastic pins or all of the two hairs and pins, which allow to hang and / or train the lock of hair during its treatment with the brush attachment. The bristles can be of different natures, but also of different lengths, to adapt to any type of hair or any length of hair. The bristles can be grouped by tufts of several or be individual if it is picnic for example.

Advantageously, the accessory according to the invention has a section of the outer surface (Sext) of the sleeve (10) in a plane orthogonal to the longitudinal axis (L) defining a closed curve (C) which is an oval presenting a small axis (r) contained in the first plane (P1) and a major axis (R) contained in the second plane (P2), the major axis ratio divided by minor axis (R / r) being greater than or equal to 1.1. Advantageously and alternatively to the previous mode, the accessory according to the invention has a section of the outer surface (Sext) of the sleeve (10) in a plane orthogonal to the longitudinal axis (L) defining a closed curve (C) which is an ellipse having a minor axis (r) contained in the first plane (P1) and a major axis (R) contained in the second plane (P2), the major axis ratio divided by minor axis (R / r) being greater than or equal to at 1.1.

It is recalled that the oval and the ellipse are two plane, closed curves, symmetrical with respect to one or two perpendicular axes. The oval is constituted by a succession of arcs of circle connected to each other, the oval can define one or two axes of symmetry. The ellipse is a plane curve and defines two axes of symmetry. It is a conic such that the sum of the distances from each of its points to the two foci is constant. The ellipse is built point by point. Thus the oval has a more curved shape at the ends of the major axes in comparison with the ellipse. The elliptical section will advantageously be used for a hairstyle requiring a great deal of traction on the locks of hair to be brusher in a flexible manner but not very curved. While the oval section will be advantageously used for a hairstyle requiring less traction on the locks of hair to brusher in a flexible and more rounded manner. Both sections work very well.

Advantageously, the major axis ratio divided by small axis (R / r) of the accessory according to the invention is between 1.1 and 3; preferably between 1.3 and 2, substantially equal to about 1.6. The larger the dimension ratio, the greater the tension exerted on the hair at each passage in contact with the point corresponding to the major axis.

Advantageously, the set of bristle tufts (11, 11 ', 11 ") may comprise at least two straight rows (11) of tufts of bristles parallel to the longitudinal axis (L) and each arranged on the line defined by the two ends of the major axis (R) This allows to drive the treated wick and subject it to traction longer, for a more effective brushing.

Advantageously, the set of bristle tufts (11, 11 ', 11 ") may comprise at least one pair of straight rows of bristle tufts (11', 11") arranged symmetrically with respect to the first plane (P1) and to the second plane (P2). Thus the rows will be distributed evenly to cause the treated lock on the entire circumference of the brush.

Advantageously, the sleeve (10) may have a base (14) adapted to be mounted on an outlet section (204) of an electric air-style hairdressing appliance (100). This reduces the clutter out of use. This also makes it possible to propose a hairdressing tool kit with several detachable brushes accessories.

The electric airflow hairdressing apparatus (100) according to the invention comprises an air inlet (202), a heating element (205), a fan (207), a fan drive means (206) ) and an outlet section (204) blown air, and comprises a hairdressing accessory (1) according to the invention. The accessory can be permanently attached to the device.

Advantageously, the accessory (1) can be adapted to be mounted detachably on the section (204) of the air outlet of the device.

Advantageously, the apparatus may be a linear blower brush whose handle has a longitudinal axis (L ') coincident or parallel to the longitudinal axis (L) of the accessory (1). This reduces the clutter out of use. This also makes it possible to propose a set of hairdressing apparatus with several accessories detachable brushes.

Alternatively, the apparatus may be a conventional gun-shaped hair dryer whose axis of the accessory will be substantially perpendicular to that of the handle. This shape allows the user not to twist his wrist during operation.

The invention will be better understood from the study of the embodiments taken in no way limiting and illustrated in the accompanying figures in which: - Figure 1 is a simplified sectional view of a complete electric hairbrush according to the invention; - Figure 1 is a side view of the complete apparatus according to the invention; - Figure 2 is a sectional view of an accessory according to the invention; Figure 3 is a view of the long side of the accessory of Figure 2; - Figure 4 is a view of the short side of the accessory of Figure 2; - Figures 5 and 6 show views according to 2 different perspectives of the accessory according to Figure 2.

The electric shaping apparatus of the invention, in particular an electric hair brush 100, is illustrated in a simplified sectional view in FIG. 1 and in side view in FIG. 2. The apparatus 2 without an accessory comprises a housing 200 forming a gripping handle 201 extended forwards by a hairdressing accessory 1. The handle 201 contains means for circulating air between an air inlet opening 202, through a filter or a gate 203, opening located at the distal end of the accessory 1 (one or more side and / or rear openings to the housing) and an air outlet opening 204 located near the accessory 1. Advantageously according to the invention, the housing 2 of the handle 201 encloses, between its air inlet openings 202 and those of air outlet 204, a fan 207 located in the vicinity of the filter 203, rotated by a first motor 206 electric in the extension of the which is arranged a heating element 205. The heating element 205 is inside a sleeve 208. The hot air blown by the handle and channeled by the sheath 208 out through one end of the sleeve 208 and arrives at The interior of the hollow sleeve (10) of the accessory 1. The accessory 1 has a cylindrical tubular base 14 extending forwards through an active portion which is the cylindrical tubular outer surface Sext. The active part (Sext) of the sleeve 10 is provided with bristles 11, 11 ', 11 "and orifices or through openings 12 for the air outlet uniformly distributed on its surface (fig.2).

According to the invention and as illustrated in FIG. 1, in the case where the electric blower may be additionally rotated by means of a motor, the electric hairbrush 1 may comprise a second electric motor 206 'for driving the motor. accessory 1, which motor is connected by a rod 209 to the air outlet end 204 of the handle 201.

Alternatively the second motor 206 'can be included inside the housing 2 of the handle 201. As another alternative, a single motor can be used to drive the fan and the rotating accessory. The base 211 of the rod 209 has an outer cylindrical portion 212 which serves as a rotational guiding zone for the inner surface of the base 14 of the accessory 1. The generic term motor can also denote a geared motor power supply. When the brush accessory 1 is removable, its sleeve 10 will be attached to the rod 209 by a distal fixing system 30 using for example splines.

Figures 2 to 6 show the accessory according to the invention. It comprises a sleeve (10) defining a hollow body having a longitudinal axis (L) capable of being mounted on the hairdressing apparatus 100. The sleeve 10 comprises a set of bristle tufts for driving the hair (11, 11 ', Il' ') and a set of through apertures (12) capable of passing the air flow The outer surface (Sext) of this sleeve (10) intended to come into contact with the hair is symmetrical with respect to at least one first plane (P1) coincident (as illustrated) or parallel to the longitudinal axis (L) .The section orthogonal to the longitudinal axis (L) of the outer surface (Sext) illustrated in FIG. The outer surface (Sext) of the sleeve is symmetrical with respect to at least one second plane (P2) orthogonal to the first plane (P1) The axes of symmetry substantially corresponding to the major axis and the minor axis of the oval or the ellipse.

In section orthogonal to the axis of symmetry (L) as illustrated in FIG. 2, the small axis r of the oval formed by the sleeve or body (10) is substantially equal to 37 mm and the major axis R of the oval is substantially equal to 60 mm. The set of through openings 12 able to pass the flow of air blown by the apparatus comprises at least one row of oblong openings arranged parallel to one another. The number of rows is preferably even, and each pair of rows may form "chevrons" whose tip is oriented towards the part adaptable to the device to allow an optimization of the passage of the flow.

The dimensions of the accessory are as follows but can not be considered as limiting to describe the invention: its height is equal to 134 mm, its minor axis is equal to 18 mm, its large axis R is equal to 30; mm; - It has 12 rows of 9 tufts of bristles each emerging radially from the body, the tufts of bristles have a length of about 9 40mm; - The through openings are inclined by about 45 ° relative to the longitudinal axis, they have a length equal to 12 mm, a width equal to 2 mm.

Before operation, when the accessory is removable, the user can choose an accessory and insert it into the output section of the device until a circular protrusion internal to the outlet section 204 of the housing 200 enters in a circular groove 47 of the corresponding base 14. The skilled person can consider any type of fixation as lugs that arrive at the bottom of bayonets. The device is then ready for use, the user actuates a button 220 for starting the first motor 206 which allows the flow of hot air to exit through the openings 12 of the accessory 1. A button 221 may be provided to cut off power to the heating element 205 for treatment with air at room temperature. A button may also be provided to turn on an ion generator and enrich the air flow blown by the handle with ions. By actuating a button 222, the user starts the second drive motor 206 'of the accessory 1 which then begins to rotate to achieve shaping of the hairstyle. This button also makes it possible to reverse the direction of rotation of the motor 206 or to vary its speed.

Thus, the operation and effectiveness of the brush provided with the "oval" or "elliptical" accessory are demonstrated with respect to a totally tubular constant radius accessory. Indeed, in the order of treatment when the hair is wrapped around the treatment surface, the wick is pulled by the bristles 11 arranged on the outer surface Sext of the sleeve and then comes into contact with the outer surface of the sleeve. less "curved" oval and bristles 11 'and 11 ".The part of lock of hair driven by the big top of the ellipse or oval undergoes a stronger tension than if the accessory was a cylindrical brush at most large diameter of the oval The part of the lock of hair in contact with the less "curved" surface has a greater surface area of contact of the hair with the treatment surface than if the body was a cylindrical body, therefore receives longer air blown, is under traction longer and can fix the shape of the lock of hair more effectively.This allows a rendering "volumizing smooth" on the hair.

The hair is never fully wrapped around the accessory in good operation of the device. Indeed, for this electrical appliance 100 for shaping the hair, the accessory 1 with hair is shaped so that the rotation of the hair is done at a certain point to avoid in principle a complete winding of the accessory 1 in the hair. It takes a certain speed of rotation to maintain for the necessary time the hair to form in the position that produces the corrugation to achieve. The heat provided by the hot airflow supports the process of shaping the hair. The hairbrush is suitably shaped in the manner of an airbrush and the hot airflow is delivered into the hairbrush penetrating the internal intake channel of the hairbrush and radially outwardly exposed by the hairbrush. outlet openings located in the hairbrush.

The limited drive in rotation of the hair by the brush is obtained so that the upper face of the body oriented radially outwardly of the brush has properties such that it will transmit substantially no torque on the hair. This surface is therefore judiciously very smooth and / or has a coating to which the hair to be shaped does not adhere during a rotation of the hairbrush, as is for example the case for a coating of polytetrafluoroethylene (coating PTFE). By configuring the surface of the sleeve 10 of the hairbrush in this manner, the rotational drive of the hair to be shaped is mainly provided by the bristles or bristles. These are designed by their density and / or their rigidity so that on the one hand, the rotational drive of the hair to be shaped actually occurs during the rotation of the hair brush, but on the other hand, that this rotation drive takes place only on a part of the circumference of the hairbrush, for example between 90 ° and 270 °, more particularly between 135 ° and 235 °; more specifically around 180 °. The air flows radially out of the through openings.

Other variants and embodiments of the invention may be envisaged without departing from the scope of its claims.

Thus, the drive motor of the accessory can be coupled to its output shaft with a mechanism for transforming its rotational movement into an alternating translation movement or a vibratory movement, etc. to use with different types of accessories.

Thus, the blowing hairdressing apparatus can be a totally longitudinal brush whose axis of the accessory is parallel or coincides with the axis of the gripping box, or can be a conventional gun-shaped hair dryer whose axis of the accessory is substantially perpendicular to that of the grip handle.

Claims (11)

CLAIMS1.Accessoire (1) intended to fit on a hairdressing appliance (100) electrical air flow comprising: a sleeve (10) having a hollow longitudinal axis (L) capable of mounting on the hairdressing apparatus (100), the sleeve (10) comprising a set of bristle tufts (11, 11 ', 11 ") and a set of through openings (12) adapted to pass the air flow, characterized in that the sleeve (10) has a symmetrical outer surface in at least the first plane (P1) containing the longitudinal axis (L) and a second plane (P2) containing the longitudinal axis (L) and orthogonal to the first plane (P1) and characterized in that the section of the outer surface (Sext) of the sleeve (10) in a plane orthogonal to the longitudinal axis (L) defines a closed curve (C) having a minor axis (r) contained in the first plane ( P1) and a major axis (R) contained in the second plane (P2), the major axis ratio divided by small axis (R / r) being greater or equal to 2. Accessory according to the preceding claim characterized in that the section of the outer surface (Sext) of the sleeve (10) in a plane orthogonal to the longitudinal axis (L) defines a curve (C) closed which is an oval having a small axis (r) contained in the first plane (P1) and a major axis (R) contained in the second plane (P2), the major axis ratio divided by small axis (R / r) being greater than or equal to 1.1 . 3. Accessory according to the preceding claim characterized in that the section of the outer surface (Sext) of the sleeve (10) in a plane orthogonal to the longitudinal axis (L) defines a curve (C) closed which is an ellipse having a small axis (r) contained in the first plane (P1) and a major axis (R) contained in the second plane (P2), the major axis ratio divided by small axis (R / r) being greater than or equal to 1.1 . 4. Accessory according to one of the preceding claims, characterized in that the axis ratio divided by small axis (R / r) is between 1.1 and 3, preferably between 1, 3 and 2. 5. Accessory according to one of the preceding claims characterized in that the set of bristle tufts (11, 11 ', 11 ") comprises at least two straight rows (11) of tufts of bristles parallel to the longitudinal axis (L) and each arranged on the line defined by the two ends of the major axis (R). 6. Accessory according to the preceding claim characterized in that the set of bristle tufts (11, 11 ', 11 ") comprises at least one pair of straight rows of bristle tufts (11', 11") arranged symmetrically relative to each other. in the foreground (P1) and the second plane (P2). 7. Accessory according to one of the preceding claims, characterized in that the sleeve (10) has a base (14) adapted to be mounted on an outlet section (204) of an electric hairdressing appliance (100) with a flow of air. An electric airflow hairdressing apparatus (100) comprising an air inlet (202), a heating element (205), a fan (207), a fan drive means (206) and a section outlet (204) of blown air, characterized in that it comprises a hairdressing accessory (1) according to one of the preceding claims. 9. Hairdressing apparatus according to the preceding claim characterized in that the accessory (1) is adapted to be mounted detachably on the section (204) of air outlet. 10. Apparatus (100) according to one of the preceding claims characterized in that the apparatus is a linear blower brush whose handle has a longitudinal axis (L ') coincident or parallel to the longitudinal axis (L) of the accessory ( 1). 30 11. Apparatus (100) according to one of claims 8 or 9 characterized in that the apparatus is a conventional gun-shaped hair dryer whose axis of the accessory will be substantially perpendicular to that of the handle 25.