WO2017077221A1

WO2017077221A1 - Straightener-like hairstyling device with optimized comb

Info

Publication number: WO2017077221A1
Application number: PCT/FR2016/052778
Authority: WO
Inventors: Régis FEREYRE; Eddy NGO
Original assignee: Seb S.A.
Priority date: 2015-11-02
Filing date: 2016-10-25
Publication date: 2017-05-11
Also published as: FR3042958A1; EP3370565A1; CN108348058A; EP3370565B1; CN108348058B; FR3042958B1

Abstract

The invention relates to a hairstyling device (1) including a first (2) and a second (3) arm configured to form a clamp, a first (7) and a second (8) treatment surface that face one another, on said arms respectively, for pressing a lock of hair during clamping, and a first comb (11) configured on the first arm upstream of the first treatment surface in order to suitably distribute the lock between the two treatment surfaces and to place tension on the lock before the passage thereof between said treatment surfaces, at least one of the two treatment surfaces including heating means. The invention is characterized in that the first comb includes teeth (13) that are mutually spaced apart by a constant spacing (p) of between 0.50 mm and 8.00 mm, said teeth having the shape of a pyramid with a rectangular base.

Description

LISTING TYPE HAIRSTYLE WITH OPTIMIZED COMB Technical area

The present invention relates to the field of hair styling devices of hair straightener type that allow the treatment of strands of hair by pinching them between two treatment surfaces of which at least one of said surfaces is heated.

State of the art

Hair straightening appliances traditionally comprise two arms configured to form a clamp, each arm comprising on its inner face a treatment surface. The treatment surfaces on the two arms are arranged vis-à-vis and allow to press a lock of hair when the arms are pinched. During use, the straightener is moved along the lock of hair, from the root to the tip. One or both of the treatment surfaces are provided with heating means so as to heat the lock of hair during its nip between the two treatment surfaces, thereby improving the quality of straightening of the lock of hair.

Smoothing style hairdressing apparatuses are also known which comprise, in addition to the above-mentioned features, a comb arranged longitudinally, which makes it possible to aerate the strand of hair by distributing it over the entire length of the treatment surfaces, which makes it possible to heat and pinch properly all the hair during their passage between the two treatment surfaces, for better hair straightening. By way of example, such a comb is described in the international application WO 2010 081968 A1.

Summary of the invention The object of the invention is to implement a straightener-style hair styling device that makes it possible to optimize the result of the smoothing of the hair. For this purpose, the hairdressing apparatus according to the invention comprises a first and a second arm configured to form a clamp, a first and a second treatment surfaces configured vis-a-vis respectively on said arms to press a lock of between said treatment surfaces during the nip obtained by bringing the two arms together. At least one of the two treatment surfaces comprises heating means, preferably both treatment surfaces, for heating the lock of hair and obtaining a better smoothing. In addition, the hairdressing apparatus also comprises a first comb configured on the first arm upstream of the first treatment surface to appropriately distribute the wick between the two treatment surfaces and to create a tension on the wick before its passage between said treatment surfaces. In other words, the first comb is positioned on the first arm so that the hair meets said comb before they meet the treatment surfaces, according to the normal direction of movement (preferably from the root of the hair towards the tip) of the hairdressing apparatus during a hair straightening operation for example. Remarkably, this first comb comprises teeth spaced apart from each other at a constant pitch of between 0.50 mm and 8.00 mm. Moreover, said teeth have a pyramidal shape with a rectangular base. The largest side of the rectangular base, which defines the largest face of the tooth, is arranged transversely on the comb. The applicant has indeed found after having carried out numerous studies and studies that the choice of a comb with teeth having a pyramidal shape with a rectangular base and a constant pitch of between 0.50 mm and 8.00 mm makes it possible to visually significantly increase the quality of the straightening of the lock of hair compared with comb-type hair straighteners of the prior art. By the expression "comb with teeth having a pyramidal shape with a rectangular base", it is preferentially understood that several teeth of said comb comprise at least one portion of a pyramidal tooth, that is to say a portion of tooth in the form of a pyramid or pyramid trunk, as will be explained later. Preferably, said portion of the pyramidal tooth of the tooth extends over at least half of the height of the tooth and advantageously over three quarters of the height of the tooth. In a preferred embodiment of the hairdressing appliance according to the invention, the pitch between the teeth is 2.10 mm, which makes it possible to optimize the smoothing result.

In a preferred embodiment of the hairdressing apparatus according to the invention, the pyramidal shape with a rectangular base comprises a large base having a width of between 0.80 mm and 1.20 mm, preferably 1.00 mm, and a length between 1.90 mm and 2.70 mm, preferably 2.30 mm. In addition, the pyramidal shape with a rectangular base comprises a small base having a width of between 0.20 mm and 0.40 mm, preferably 0.30 mm, and a length of between 0.40 mm and 0.80 mm, preferably 0.60 mm. More precisely, said small base is then parallel to said large base and the pyramidal shape can then be assimilated to a truncated pyramid, ie a pyramid portion, the top of the pyramid being formed by said small base. Furthermore, the height separating the large base and the small base is between 2.00 mm and 16.00 mm, preferably 10.40 mm. These dimensional choices of the pyramidal shape with a rectangular base of the teeth also make it possible to optimize the result of the straightening of the lock of hair. According to the hairdressing apparatus object of the invention, it comprises support means configured on the second arm upstream of the second treatment surface and the first comb to constrain the lock of hair to penetrate between the teeth to in the bottom of said first comb. Positioning the hair of the wick in the bottom of the comb allows the teeth to squeeze more heavily on said hair and, thus, to put them properly under tension before they pass between the two treatment surfaces. In one embodiment, these support means consist of a curved hood disposed on the second arm in correspondence with the first comb on the first arm, said first comb being housed in said hood during the nip. In a first variant, the curved hood comprises a longitudinal edge which bears on the lock of hair. Preferably, the position of this longitudinal edge substantially corresponds to the bottom of the comb pinch position.

In a second variant, the curved hood comprises a longitudinal portion configured to form a second comb disposed in the opposite direction of the first comb, downstream of said first comb.

In another embodiment, these support means comprise a longitudinal contact element in a material configured to exert a resistance to friction on the lock of hair, for example a silicone material. In the case of a curved hood, it is conceivable to make the longitudinal edge in a silicone material or in other materials.

In a variant of hairdressing appliance according to the invention, it also comprises vaporization means configured to perform a steam treatment in addition to a heating treatment during the passage of the lock of hair between the two surfaces of treatment, or even before or after its passage between said treatment surfaces.

Brief description of the figures

The characteristics and advantages of the invention will appear on reading the following description of an embodiment of the hairdressing apparatus, which relies on figures, among which:

- Figure 1 illustrates a three-dimensional view of the hairdressing apparatus;

FIGS. 2 and 3 illustrate two three-dimensional views of the two arms constituting the hairdressing apparatus of FIG. 1;

- Figure 4 illustrates a three-dimensional view of the comb implemented on the hairdressing apparatus; FIG. 5 illustrates an enlarged view from above of one of the teeth of the comb;

Figure 6 illustrates an enlarged side view of three teeth of the comb;

FIG. 7 illustrates an alternative embodiment of a cover on one of the arms of the hairdressing appliance of FIG. 1.

detailed description

In the rest of the description, the same references are used to describe the similar characteristics according to the different embodiments. In the rest of the description, the term "straightener" will be used to designate the hairdressing apparatus 1 according to the invention.

As illustrated in FIG. 1, the straightener 1 comprises two arms 2, 3 - also called jaws - hinged together by means of a pivot connection 4, which makes it possible to form a clamp which can be arranged either in the open position where the two arms are distant from each other, or in the closed position where the two arms are brought close together. The proximal portions 2a, 3a of the two arms 2, 3 can simultaneously be gripped with one hand, which allows the closure of the clamp and the handling of the straightener 1. The two arms 2, 3 each comprise on their internal face 5, 6 and at their distal portion 2b, 3b, a treatment surface 7, 8. The two treatment surfaces 7, 8 are arranged facing each other. and allow to press a lock of hair disposed between said treatment surfaces 7, 8, when closing the clamp. Preferably, the two treatment surfaces 7, 8 are heating, but it is possible to provide implementation variants with only one of the two treatment surfaces 7, 8 which is heating. The treatment surfaces 7, 8 are in the form of heating plates 9, 10 and incorporate heating means (not shown) of said heating plates 9, 10 including in particular a heating device (not shown) consisting of a thermistor to positive temperature coefficient, called CTP, and a device of temperature measurement (not shown) consisting of a thermistor with a negative temperature coefficient, called CTN.

The above characteristics are well known to those skilled in the field of hair straighteners, and are therefore not described in more detail. However, it will be possible to envisage innovative variants on these aforementioned characteristics of the straightener, without departing from the scope of the present invention.

As illustrated in Figures 1 and 3, the straightener 1 comprises a comb 1 1 which extends longitudinally adjacent to the upstream longitudinal edge 9a of the heating plate 9 of the first treatment surface 7. The comb 1 1 comprises a longitudinal body 12 and teeth 13, for example between forty and fifty teeth 13, as illustrated in FIG. 4. This comb 1 1 is preferably removably assembled on the inner face 5 of the arm 2. For this, the inner face 5 of the arm 2 comprises a groove 14 which extends longitudinally adjacent to the upstream longitudinal edge 9a of the heating plate 9, this groove 14 being of complementary shape to that of the body 12 of the comb 1 1, which allows a slide assembly of the body 12 inside said groove 14, with the teeth 13 of the comb 1 1 directed towards the second arm 3. This advantageously allows to be able to replace the comb 1 1, for example by another having dimensi 13 different teeth.

As illustrated with reference to FIGS. 4 to 6, the teeth 13 of the comb 11 are spaced from each other by a regular pitch and have a pyramidal shape with a rectangular base. The large face 15 of the tooth 13 is arranged in the transverse direction on the comb 11 and the small face 16 of the tooth 13 is arranged in the longitudinal direction of the comb 11. Each tooth 13 has a large rectangular base 17 proximal to the body 12, and a small rectangular base 18 distal to said body 12 and constituting the tip of the tooth 13. More specifically, said small rectangular base 18 is then parallel to said large rectangular base 17 and the pyramidal shape can then be assimilated to a truncated pyramid, that is to say a portion of pyramid, the top of the pyramid being formed by said small base. The height h of the tooth 13 is defined by the distance separating the small rectangular base 18 from the large rectangular base 17. The large rectangular base 17 has a length L1 and a width 11 and, similarly, the small rectangular base 18 has a length L2 and a width 12.

The Applicant has found that this choice of teeth 13 having a pyramidal shape with a rectangular base, arranged as illustrated in FIGS. 4 and 6, with a regular pitch chosen between 0.50 mm and 8.00 mm, makes it possible to remarkably improve the penetration of the lock of hair between the teeth 13 by homogeneously distributing the hair of said wick along the length of the comb 1 1, and allows to create a homogeneous tension on all the hair of said wick before their passage between the treatment surfaces 7, 8. The homogeneous tension on the hair and their homogeneous distribution contribute to suitably heat all the hair of the wick to the core and to ensure a homogeneous pressure on all said hair as it passes between the two treatment surfaces 7, 8. The Applicant has noted that these choices can visually increase the quality of hair straightening compared to previous straighteners.

The results of the smoothing of the hair are optimized by choosing a pitch p of 2.10 mm between the teeth 13. These results of the smoothing are further optimized by choosing for the dimensions of the teeth 13: a large rectangular base 17 of width 11 between 0.80 mm and 1, 20 mm, preferably equal to 1.00 mm, and length L1 between 1.90 mm and 2.70 mm, preferably equal to 2.30 mm,

a small rectangular base 18 of width 12 between 0.20 mm and 0.40 mm, preferably equal to 0.30 mm, and a length L 2 of between 0.40 mm and 0.80 mm, preferably equal to 0.60mm, and

a height h of between 2.00 mm and 16.00 mm, preferably equal to 10.40 mm.

As illustrated in Figures 1 and 2, the straightener 1 comprises support means constituted by a cover 19 which is arranged on the second arm 3 upstream of the second treatment surface 8. This cover 19 has a curved shape with a longitudinal portion 24 which descends and is positioned upstream of the teeth 13 of the comb 1 1, next to said teeth 13 which are located housed in the cavity 20 formed by the curved hood 19, in the closed position of the clamp. In this closed position of the clamp, illustrated in FIG. 1, the longitudinal edge 21 of the cover 19 is in a position which corresponds substantially to that of the bottom 22 of the comb 11, which appears in more detail in FIGS. 4 and 6. to press the hair of the wick and force them to slide towards the bottom 22 of the comb 1 1, between the teeth 13, so as to optimize the tension exerted on said hair during their passage through the comb 1 1, before to be pressed between the two treatment surfaces 7, 8.

It is possible to envisage variants of support means replacing the cover 19, for example by providing on the second arm 3 a wire element or bar (not shown) which would have a similar arrangement to the position of the longitudinal edge 21 of the cover 19.

Cover variants 19 are also conceivable. As illustrated in FIG. 7, it is possible to provide on bonnet 19, at its longitudinal edge 21, a bead 23 (or a blade) made of a material having a coefficient of friction which makes it possible to ensure a slight additional tension on the hair on which said bead 23 presses when closing the clamp. This bead 23 is preferably made of silicone. This silicone material could also be envisaged for the wire element or the aforementioned bar.

In another variant, it is possible to envisage the implementation of a second comb (not illustrated) arranged on the longitudinal portion 24 of the cover 19, illustrated in particular in FIGS. 2 and 7, in opposition to the first comb 11 on the first arm. 2. This second comb would ensure a pre-tension on the hair and a pre-separation of the hair before their passage through the first comb 1 1. The teeth of this second comb could be identical or similar to the teeth 13 of the first comb 1 1, or of a different design. This second comb could also be provided in a silicone material to increase the coefficient of friction on the hair. It can also be envisaged that the teeth 13 of the first comb 11 are made of a material whose coefficient of friction makes it possible to ensure a slight additional tension on the hair during their passage between said teeth 13. These teeth 13 may for example be silicone.

In another variant of straightener 1, the latter additionally comprises vaporization means which can be arranged in different ways on one and / or the other of the two arms 2, 3 so as to project steam onto the hair strand before, during or even after its passage between the two treatment surfaces 7, 8. Such means of vaporization on the straighteners are known to those skilled in the art and are therefore not described in more detail, which does not However, it does not exclude the use of innovative vaporizing means while remaining within the scope of the present invention.

The foregoing description has no limiting character, many variations of straighteners being conceivable without departing from the scope of the invention.

Claims

Hairdressing appliance (1) comprising a first (2) and a second (3) arm configured to form a clamp, a first (7) and a second (8) treatment surface configured in facing relation respectively to said arms for pressing a lock of hair when pinching, and a first comb (11) configured on the first arm upstream of the first treatment surface to appropriately distribute the lock between the two treatment surfaces and to create tension on the lock before it passes between said treatment surfaces, at least one of the two treatment surfaces comprising heating means, characterized in that the first comb comprises teeth (13) spaced apart from each other by a constant pitch (p) between 0.50 mm and 8.00 mm, said teeth having a pyramidal shape with a rectangular base.

Apparatus (1) according to claim 1, wherein the pitch (p) is 2.10 mm.

Apparatus (1) according to one of claims 1 or 2, wherein the pyramidal shape with a rectangular base comprises a large base (17) having a width (11) between 0.80 mm and 1, 20 mm and a length ( L1) between 1.90 mm and 2.70 mm, a small base (18) having a width (12) of between 0.20 mm and 0.40 mm and a length (L2) of between 0.40 mm and 0.80 mm, and a height (h) separating the large base and the small base between 2.00 mm and 16.00 mm.

Apparatus (1) according to claim 3, wherein the large base (17) has a width (11) of 1.00 mm and a length (L1) of 2.30 mm, the small base (18) has a width ( 12) of 0.30 mm and a length (L2) of 0.60 mm, the height (h) being 10.40 mm.

Apparatus (1) according to one of claims 1 to 4, which comprises support means (21, 23) configured on the second arm (3) upstream of the second treatment surface (8) and the first comb ( 1 1) for forcing the lock of hair to penetrate between the teeth (13) into the bottom (22) of said first comb.

6. Apparatus (1) according to claim 5, wherein the support means consist of a curved hood (19) in which is housed the first comb (1 1) during the nip.

7. Apparatus according to claim 6, wherein the curved hood (19) comprises a longitudinal edge (21) whose position substantially corresponds to the bottom (22) of the comb (1 1) in the nip position.

8. Apparatus (1) according to claim 6, wherein the curved hood (19) comprises a longitudinal portion (24) configured to form a second comb disposed opposite the first comb (1 1).

9. Apparatus (1) according to one of claims 5 to 7, wherein the support means comprises a longitudinal member (23) contact in a material configured to exert frictional resistance on the lock of hair.

10. Apparatus (1) according to one of claims 1 to 9, wherein the two processing surfaces (7, 8) comprise heating means.

1 1. Apparatus (1) according to one of claims 1 to 10, which comprises means for vaporization.