CN107105860B

CN107105860B - Improved attachment for electric hairbrush

Info

Publication number: CN107105860B
Application number: CN201580071920.5A
Authority: CN
Inventors: 西尔维亚·奥埃特; 马夏尔·梅松纳夫; 法比安·诺曼德; 格扎维埃·瓦谢龙
Original assignee: SEB SA
Current assignee: SEB SA
Priority date: 2014-12-30
Filing date: 2015-12-23
Publication date: 2020-11-20
Anticipated expiration: 2035-12-23
Also published as: WO2016108018A1; ES2706410T3; CN107105860A; EP3240455B1; EP3240455A1; FR3031019A1

Abstract

The invention relates to an attachment (1) for fitting to an electric hair-cutting device (100) for an air flow, said attachment (1) comprising a hollow sleeve (10) having a longitudinal axis (L) and being mountable on said hair-cutting device (100), said sleeve (10) comprising a series of rows of bristles (11) and a series of rows of through-openings (12, 12') through which the air flow can pass. The accessory (1) comprises hair heating means (4) for heating the hair by conduction, said heating means being arranged protruding from the outer surface (Sext) of the sleeve (10).

Description

Improved attachment for electric hairbrush

Technical Field

The present invention relates to the technical field of electrically powered devices for hair shaping, comprising a hot air fan and an electric or stationary hair brush shaped attachment. Such accessories are pierced by an air flow generated by a hot air fan, having a hollow sleeve and bristles projecting from the sleeve. The invention relates in particular to an accessory for fitting on such a shaped electrically powered device.

Such an apparatus for hair shaping allows waves to be formed in human wet hair. Drying and shaping of the hair is thus ensured by the hair brush, assisted by a flow of hot air which delivers the necessary heat towards the hair. The brush can be driven in rotation either manually by the user or automatically by a motor. The waves are formed by rotating the brush in the locks of hair to be shaped when the brush is rotated manually or electrically. The lock of hair is wound after the rotational drive of the hair gripped by the hair and/or the coated surface of the brush, the rotational drive being caused by the rotation of the brush.

Background

Patent FR2978333 filed by the applicant is known to describe an electrically powered device for hair shaping with a hairbrush arranged on a handle comprising hot air flow means. The hair brush includes a hollow sleeve including a set of bundles of bristles and a set of through openings for passage of an air flow. The sleeve described in this patent has a shape that facilitates hair shaping. However, the hair held by the bundles of bristles can only be heated by the hot air exiting the openings. It has been found that this arrangement is not efficient enough for drying and shaping of hair due to heat loss.

Another document FR2258814 is known to describe an electric brush for hair shaping having rows of bristles and a plurality of heating elements interposed between the rows of bristles. Said electric heating element protrudes with respect to the brush sleeve, allowing to ensure the heat exchange between the brush and the hair. However, the device described in this document does not comprise a hot air flow means. The heat exchange is only done by the contact of the hair and the heating element, which does not allow for a uniform and efficient drying.

Disclosure of Invention

The object of the present invention is to overcome the above-mentioned drawbacks and to provide an air-flow electric hair-cutting apparatus with improved drying and hair-shaping efficiency.

Another object of the invention is an electric air-flow hair-cutting apparatus with the same efficiency but with reduced power of the heating element.

Another object of the invention is an air-flow electric hair-cutting apparatus for hair shaping with reduced bulk.

Yet another object of the present invention is an air-flow electric hair-cutting apparatus which is easy to use and versatile.

These aims are achieved by an attachment for fitting on an electric hair-cutting apparatus comprising a hollow sleeve having a longitudinal axis (L) and mountable on said hair-cutting apparatus, the sleeve comprising a set of rows of bristles and a set of rows of through openings capable of letting through an air flow. According to the invention, the accessory comprises hair heating means for heating the hair by conduction, said heating means being arranged protruding from the outer surface (Sext) of the sleeve.

Heating means are means for dissipating heat by conduction towards the hair, said means themselves being heated by the hot air coming from the hairdressing equipment. The heating mechanism is thus passively heated by convection. It is not electrically heated, i.e. by means of an electric heating element of the resistive type in contact with the heating means of the hair. Since the heating means is arranged protruding from the outer surface of the sleeve, the heating means is more easily brought into contact with the hair during use, which allows to facilitate heat transfer and to increase the efficiency of hair drying and shaping.

Further, "bristles" refers to any type of hair, natural or synthetic, such as a thin strip of plastic material, or a combination of hair and thin strips, which allows to hook and/or drive a hair lock during its treatment by the brush-shaped accessory. The bristles can be of different nature and can also be of different lengths so as to fit any type or length of hair. The bristles can be divided into a plurality of bundles or can be individual if, for example, thin strips are involved.

The addition of such a heating mechanism allows to improve the heat transfer rate to the hair, so as to be able to reduce the power of the heating element and therefore the diameter of the brush sleeve. This also allows space savings by a smaller volume of heating elements in the brush.

Advantageously, the row of through openings can be arranged in the direction of the longitudinal axis (L) and at least a part of the heating means is intended to cover at least one row of through openings. Preferably, the heating means entirely covers the through opening. Each row of through openings can comprise a plurality of through openings allowing the passage of an air flow, the shape and/or size of the openings being identical or different. It can also involve a continuous longitudinal opening through the shape of the groove.

In addition, the heating means comprise at least one longitudinal rod arranged on the outer surface (next) of the sleeve in the direction of the longitudinal axis (L). The longitudinal bars are parallel to the rows of bristles, allowing to optimize their contact with the hair.

According to a first embodiment of the invention, said at least one longitudinal rod comprises a reversible fixing mechanism allowing the longitudinal rod to be detached from said sleeve.

According to a first embodiment, the heating means comprise at least two longitudinal bars, each for covering a column of through openings. The longitudinal bars are therefore in direct contact with the flow of hot air from the inside of the sleeve, which allows convection to be generated in addition to heat conduction.

Advantageously, the longitudinal bars are arranged on both sides of each row of through openings. Thus, these outlet columns of air and the longitudinal bars can be alternately arranged so as to better balance the two heating mechanisms of the hair, namely air blowing heating and heat conduction heating.

According to a second embodiment of the invention, the heating means comprise a hollow cylinder arranged on the outer surface (next) of the sleeve, said hollow cylinder comprising at least one longitudinal rod. The hollow cylinder will thus be in direct contact with the hair. This configuration allows to obtain an integrated heating mechanism, which facilitates the positioning of the heating mechanism.

Advantageously, the hollow cylinder has a passage area for the air flow, which is inserted parallel to the longitudinal rod and at a distance from the latter. In addition, the region has through-holes of the same cross-section and in opposite rows of through-openings for the passage of the air flow. These passing areas allow the hollow cylinder to solidify without impeding the circulation of the air flow.

In addition, the accessory comprises a cap plug (bouchon) for holding the hollow cylinder on the outer surface (next) of the sleeve. Therefore, no fixing means are required on the hollow cylinder, which facilitates its manufacture.

According to a second embodiment, the longitudinal rod is metallic, preferably aluminium. This allows for an increase in the efficiency of heat transfer to the hair.

Advantageously, said longitudinal rod has, in a section along a plane orthogonal to said longitudinal axis (L), an upper end portion configured in an arched shape. The upper end corresponds to the side opposite the outer surface (next) of the sleeve. This end of the longitudinal rod is in contact with the hair during use of the device, which facilitates heat transfer to the hair due to its rounded shape with a larger contact surface.

In addition, the section of the longitudinal bar along its longitudinal plane of symmetry has an upper end that constitutes a regular wave or comb. The longitudinal plane of symmetry corresponds to the plane of symmetry of the longitudinal rod to which the longitudinal axis (L) belongs. The upper end of the regular wave or comb allows to distribute the hair evenly and thus to optimize the drying and shaping of the hair.

These objects are also achieved by an electric air-flow hair-cutting apparatus comprising an air inlet opening, a heating element, a fan, a drive mechanism for the fan and an outlet opening for blowing air, said apparatus comprising an attachment according to the above-mentioned features.

Drawings

The invention will be better understood by studying the detailed description, which is given by way of non-limiting example with reference to the accompanying drawings, in which:

figure 1 is a simplified cross-sectional view of an electric comb according to the invention;

figure 2 is a perspective view of an accessory according to a first embodiment of the invention;

figure 3 is an exploded view of the accessory according to figure 2;

figure 4 is a cross-sectional view of the accessory according to figure 2;

figure 5 is a perspective view of an accessory according to a second embodiment of the invention;

figure 6 is an exploded view of the accessory according to figure 5;

figure 7 is a cross-sectional view of the accessory according to figure 5;

figures 8a, 8b and 9 show cross-sections according to different variants of the longitudinal bar.

Detailed Description

Fig. 1 shows a simplified cross-sectional view of an air-flow electric hair cutting device 100, in particular an electric hairbrush 100. The device 2 without attachment comprises a housing 200 forming a grip handle 201, which is extended forward by the hair cutting attachment 1. The handle 201 contains an air circulation mechanism between an air inlet opening 202 and an air outlet opening 204 located near the attachment 1. The housing 200 also contains, between its air inlet opening 202 and air outlet opening 204, a fan 207 which is driven in rotation by a drive mechanism 206 of the fan, for example a motor, in the extension of which a heating element 205 is arranged.

As can be seen in fig. 1, the hair-cutting accessory 1 has a cylindrical tubular base 14, which is extended forward by a working portion for contact with the hair. According to the invention and as shown in fig. 1, in the case of a blowing electric brush which can be additionally driven in rotation by means of a motor, the electric hairbrush 100 can comprise a second drive motor of the attachment 1. The construction of the device 2 and the driving of the accessory 1 are known in particular in document FR 2978333. These elements are generally known to those skilled in the art and need not be described in more detail.

Figures 2 to 5 show an accessory 1 according to the invention. The attachment comprises a sleeve 10 defining a hollow body having a longitudinal axis (L) and mountable on a hair cutting device 100. The sleeve has a cylindrical tubular outer surface Sext equipped with a plurality of rows of bristles 11 and through-opening

holes

12, 12' enabling the passage of an air flow. More precisely, the rows of bristles 11 and the rows of through

openings

12, 12 'are arranged in the direction of the longitudinal axis (L), every two rows of bristles being spaced by one row of through

openings

12, 12'.

In order to improve the efficiency of drying and shaping of the brush, and with reference to the two embodiments of the invention, the attachment 1 comprises hair heating means 4 for heating the hair by conduction, said heating means 4 being arranged protruding from the outer surface (Sext) of the sleeve 10.

According to a first embodiment of the invention, as shown in fig. 2 and 3, the heating means 4 comprise a plurality of longitudinal bars 41 parallel to each other and arranged on the outer surface (next) of the sleeve 10 in the direction of the longitudinal axis (L). To this end, the sleeve 10 has a first series of rows 12 of through openings, each of which is constituted by circular openings of different sizes allowing the passage of an air flow, and a second series 12 'of through openings, each of which is a through recess 12' for receiving a longitudinal rod 41. The first and second series of rows of through openings may be arranged alternately. Each longitudinal rod 41 thus covers a row of through openings 12' once it is positioned in the direction of the longitudinal axis (L) on the sleeve. When all the longitudinal bars are positioned, the hot blowing air is kept in half.

In addition, the longitudinal bars 41 have a protruding thickness from the outer surface (next) of the sleeve 10, which allows to facilitate contact with the hair and heat transfer. As can be seen in fig. 4, each longitudinal rod has an upper end corresponding to the side of the outer surface (next) of the relative sleeve 10, the section of which along a plane orthogonal to the longitudinal axis (L) constitutes an arch.

Alternatively, the longitudinal bars can be removable for use with a plurality of diameters of different brushes and for fixing in a cold air hairstyle to avoid waiting for its cooling. To this end, the longitudinal rods 41 each comprise a reversible fixing mechanism 410, for example a seal (clipcage).

According to a second embodiment of the invention, illustrated in fig. 5 to 7, the heating means 4 comprise a hollow cylindrical body 40 able to be fitted on the outer surface (next) of the sleeve 10. The hollow cylinder 40 comprises a plurality of longitudinal bars 41 similar to those of the first embodiment. The longitudinal rod is arranged in the direction of the longitudinal axis (L) and has a thickness projecting from the outer surface (Sext). The hollow cylinder also has an air flow passing zone 42 parallel to the longitudinal bars 41, and the passing zone and the longitudinal bars can be arranged alternately. Said zone 42 is intended to place above a row of through openings for the passage of the air flow. Thus, and according to the example shown, the sleeve 10 is equipped with the same row 12 of through openings, while the zone 42 has through holes 420 of the same section and opposite the through openings 12.

Thus, the longitudinal rod 41 and a portion of the integral hollow cylinder 40 are simultaneously mounted on the outer surface (next) of the sleeve 10 by the air flow passing region 42. As shown in fig. 5, when the hollow cylinder 40 slides on the sleeve 10, it has a slit between each longitudinal rod 41 and the passage zone 42 allowing the passage of the bundles of bristles 11. Once seated, the hollow cylinder 40 is held by means of a cap plug 43, which is itself connected to the sleeve by means of a fixing screw or seal. As in the first embodiment, when the hollow cylinder 40 is mounted on the sleeve 10, the hot blowing air remains half.

As shown in fig. 7, each longitudinal rod has an upper end corresponding to the side opposite the outer surface (next) of the sleeve 10, the section of which along a plane orthogonal to the longitudinal axis (L) constitutes an arch. Each longitudinal rod therefore has a thickness projecting from the outer surface (next) so as to facilitate contact with the hair. The longitudinal bars can also be hollow below said upper end, which allows to create space for receiving more hot air and increasing the heating efficiency.

According to the two embodiments described above, more variants are possible involving the longitudinal bar 41: the longitudinal bars can have a contact surface of wavy, sinusoidal or straightened sinusoidal; the longitudinal bars can also be comb-shaped. Corresponding cross-sectional views along the longitudinal plane of symmetry of the longitudinal rod for these variants are shown in fig. 8a, 8b and 9. These shapes allow to exchange surfaces with the locks of hair thus optimizing the heat transfer. In addition, the longitudinal bars 41 are metallic, preferably aluminium, for their heat-conducting properties.

According to an alternative not shown in these two embodiments, the longitudinal rod is arranged directly on the sleeve. The area covered by the longitudinal bars does not have any through openings.

In operation, when the brush is activated, the air gradually heats the aluminum rod, which reaches an air temperature of about 90 ℃ at the outlet of the brush. These rods are heated by the flow of hot air coming out of the main shaft and "licking" the rods. The longitudinal rod can be additionally heated by a hole passing through the through spindle and covered by the rod. These rods then apply heat to the hair in contact therewith to facilitate drying and shaping of the hair.

Of course, various other modifications are contemplated by the present invention within the scope of the appended claims.

Claims

1. An attachment (1) for fitting on an electric hair-cutting apparatus (100) for an air flow, said attachment (1) comprising a hollow sleeve (10) having a longitudinal axis (L) and being mountable on said hair-cutting apparatus (100), said sleeve (10) comprising a set of rows of bristles (11) and a set of rows of through openings (12, 12') enabling the passage of an air flow,

said attachment (1) comprising hair heating means (4) for heating the hair by conduction, said heating means being arranged protruding from the outer surface (Sext) of said sleeve (10),

characterized in that said through opening rows (12, 12 ') are arranged in the direction of said longitudinal axis (L) and at least a portion of said heating means (4) is intended to cover at least one through opening row (12, 12'), said heating means (4) being more easily brought into contact with the hair during use, thanks to the arrangement of said heating means (4) projecting from the outer surface of said sleeve (10), which allows to facilitate heat transfer and to increase the efficiency of hair drying and shaping.

2. The attachment (1) according to claim 1, characterized in that said heating means comprise at least one longitudinal rod (41) arranged on the outer surface (Sext) of said sleeve (10) in the direction of said longitudinal axis (L).

3. The accessory (1) according to claim 2, characterized in that said at least one longitudinal rod (41) comprises a reversible fixing mechanism (410) which allows to detach said longitudinal rod (41) from said sleeve (10).

4. The attachment (1) according to any of the claims 2 or 3, characterized in that said heating means (4) comprise at least two longitudinal bars (41) each intended to cover a row (12, 12') of through openings.

5. Accessory (1) in accordance with claim 4 characterized in that the longitudinal bars (41) are arranged on both sides of each row of through openings (12, 12').

6. The accessory (1) according to any one of claims 2 or 3, characterized in that said heating means (4) comprise a hollow cylinder (40) arranged on the outer surface (Sext) of said sleeve (10), said hollow cylinder (40) comprising at least one longitudinal rod (41).

7. Accessory (1) according to claim 6, characterized in that the hollow cylindrical body (40) has an air flow passage zone (42) inserted parallel to the longitudinal bar (41) and at a distance from the longitudinal bar (41).

8. Accessory (1) according to claim 7, characterized in that said zone (42) has through holes (420) of the same section and opposite said row of through openings (12, 12') for the passage of an air flow.

9. The attachment (1) according to claim 6, characterized in that it comprises a cap plug (43) for retaining said hollow cylinder (40) on the outer surface (Sext) of said sleeve (10).

10. Accessory (1) according to any one of claims 2 or 3, characterized in that the longitudinal bar (41) is metallic.

11. The accessory (1) according to claim 10, characterized in that said longitudinal rod (41) is aluminum.

12. The attachment (1) according to any one of claims 2 or 3, characterized in that said longitudinal rod (41) has, along a section orthogonal to said longitudinal axis (L), an upper end portion which is arched.

13. Accessory (1) according to any one of claims 2 or 3, characterized in that the longitudinal bar (41) has, in section along its longitudinal plane of symmetry, an upper end that constitutes a regular wave or comb.

14. An electric air-flow hair-cutting apparatus (100) comprising an air inlet opening (202), a heating element (205), a fan (207), a fan drive mechanism (206) and a blowing air outlet opening (204), characterized in that it comprises an accessory (1) according to any one of claims 1-13.