EP2731469B1 - Hair-styling device - Google Patents

Description

The present invention relates to a hair styling apparatus having a first mold part and a second mold part for winding and shaping hair.

Hair styling devices that are capable of shaping hair into waves are well known. These known hair styling devices usually generate the waves of the hair by means of compressing the hair into a predetermined undulating shape. By compressing a two-dimensional transformation takes place. Due to this merely two-dimensional forming, however, a satisfactory result can often not be achieved.

To make smooth hair to waves or curls reveals the copy WO 2008/028941 A2 a hair styling device having at least two extensions which have rounded hair contact surfaces. However, the hair styling device disclosed in this publication is not directionally independent in use due to the special shape of the appendages, which adversely complicates the application, in particular at the back of the head, for the end user. In particular, due to the special shape of the extensions screwing in the hair to be formed with the hair styling device in only one direction is appropriate. A screwing in the other direction could lead to hair damage and / or hair breaks due to rather tapered protrusions of the extensions.

From the WO 2011/098349 A1 is a hair styling device known with a rotatable attachment for forming hair, with at least two finger-like projections for winding the hair to be formed, the extensions defining a running between them strand guide channel and have rounded hair contact surfaces. At least the hair contact surfaces of the extensions are designed such that when inserted hair tresses, an introduction of curls is possible regardless of the direction of rotation of the essay. However, it is only possible to form curls with this hair styling device. A waveform can not be obtained because of the circular cross section.

From the US Pat. No. 6,627,852 B1 is a hair-shaping device with two elongated extensions known which are connected by a hinge hinged and mutually movable. On the extensions handle parts and heating elements are attached. The heating elements are rotatable and have an asymmetrical cross-section.

From the FR 737 757 For example, a curler is known in the form of a band of flexible rubber or similar material having an axial gap along most of its length.

Object of the present invention is therefore to provide an improved hair styling device, which is characterized by a simplified handling.

This object is achieved by a hair styling device with the features of claim 1. Advantageous developments of the invention are the subject of the dependent claims. According to the invention, a hair styling device, in particular for curling and / or wave formation, is provided which has a first molded part and a second molded part for winding and shaping hair. The moldings are fixedly connected at one end and not movable with each other, extend at a distance from each other and have a different from a circular oval cross-section. The first molded part and the second molded part are circumscribed by an envelope whose profile is elliptical in cross-section, preferably super-elliptical. The hair styling device is axisymmetric along a short half axis of the envelope and / or along a long half axis of the envelope. The hair styling device is a direction-independent applicable hair styling device.

Under an envelope is particularly to understand the outer contour of the hair styling device, which is predetermined by the mold parts together. The outer contour is over the outer contour of the moldings away, for example, across spaces, completed.

Due to the axisymmetric, preferably mirror-symmetrical, formation of the hair styling device in the region of the molded parts, the user can advantageously be ensured a direction-independent application of the hair styling device.

The hair styling device according to the invention is therefore applicable regardless of direction. For example, the hair styling device, in contrast to the prior art, no more tapered protrusions on the moldings. In particular, each molded part has rounded surfaces and thus no edges, corners or the like. The curvatures of the surfaces are chosen to be so large that the hairs to be formed, which are guided over these curvatures, do not tear or break therefrom.

The direction-independent application of the hair styling device simplifies the handling of the device with advantage, for example at the back of the head, which overall results in user-friendly use. Even users who are not entrusted daily with the use of such hair-styling devices, so advantageously still achieve a satisfactory result.

The moldings are connected according to the invention firmly at one end. This means that the molded parts are not mutually movable due to this fixed and fixed attachment.

For this purpose, the molded parts are attached and mounted, for example, at the connected end to a common handle part. The individual components of the hair styling device, such as the handle part and the molded parts, are fixed and fixed together and immovably connected to each other.

The moldings are at a distance from each other. This means that the shaped parts are not in direct contact with each other except for the connected end and are not formed adjacent to each other. If the molded parts are arranged fixed relative to one another, a fixed distance between the molded parts is predetermined.

The mold parts each have an oval cross section, which preferably deviates from a circular and elliptical shape. The moldings are therefore neither round nor elliptical.

With such an oval shape advantageously a desired wave formation of the hair to be formed can be produced with a satisfactory result.

Preferably, the hair styling device has a longitudinal extension into which the molded parts and optionally the grip part extend. The molded parts preferably run parallel and at a distance from each other. At an opposite end of the handle parts of the mold parts, an opening between the mold parts is formed so that the hair to be formed between the mold parts can be inserted through this opening. In particular, the hair to be formed can thus be inserted between the first molded part and the second molded part.

In a preferred development of the invention, the first molded part and the second molded part are heatable for shaping the hair. Preferably, the moldings to temperatures up to 200 ° C, preferably between 100 ° C and 200 ° C, heatable. The mold parts are heated when using the hair styling device, so that the surface of the mold parts preferably each has a substantially uniform temperature. Substantially uniform here means in particular that the temperature in the cross-section over the surface can have application-related or device-related slight temperature fluctuations. However, these temperature fluctuations are preferably less than 10 K. The hairs to be formed are wound around the moldings for molding, for example in the form of an eight. By heating the moldings and by the oval cross section of the moldings, the hair can be shaped like a water wave with a satisfactory result.

In a further preferred development of the invention, the long half-axis of the envelope and a short half-axis of the envelope have a ratio of 5 to 4, preferably 2 to 1. Preferably, the long half-axis has a length in one
Range between 3.5 cm inclusive and 4.5 cm inclusive, preferably 4 cm. With such a geometry of the molded parts and the envelope of the molded parts, an improved and particularly satisfactory result of the "water waves" of the hair can be realized.

In a further preferred embodiment of the invention, the hair styling device is formed axially symmetrically along the short half-axis and / or along the long half-axis. Preferably, the hair styling device is axisymmetric in the region of the molded parts. For example, the first molded part and the second molded part are mirror-symmetrical with respect to the short half-axis of the elliptical envelope. The short half-axis preferably extends through a gap between the moldings, which spaces the moldings from each other. Preferably, this gap is formed centrally and in particular perpendicular to the long half-axis and extends along the short half-axis. The gap separates the mold parts spatially completely from each other except for the firmly connected end.

In a further preferred development of the invention, a distance between the first molded part and the second molded part is between 2 mm and 10 mm inclusive, preferably 8 mm. The distance between the mold parts forms in particular the gap and ensures the insertion and insertion of the hair to be formed between the moldings for winding the hair around the moldings. The distance is designed to be large depending on the device type. For example, the distance is greater in a Wellenformer than a curler. With a distance in the range indicated above, advantageously, an improved shaping of the hair to be formed can be achieved.

In a further preferred embodiment of the invention, in each case a surface of the first molded part and the second molded part, which are arranged opposite one another are at least partially trained. In particular, the surface of the first molded part, which faces the second molded part, is planar or planar at least in regions. The same applies to the second molding. Preferably, in each case the surface of the molded parts, which are arranged opposite one another, is completely flat except for rounded side regions. The formed in cross-section oval shaped parts with a partially planar surface are particularly suitable for shaping curls. Preferably, in this case, the distance between the moldings in about 8 mm.

In an alternative embodiment, in each case a surface of the first molded part and of the second molded part, which are arranged opposite to each other, in each case at least partially a convex or concave curvature. In particular, the convex and the concave curvature of the surfaces are designed such that the curvatures interlock. The convex curvature of the one molded part engages, for example, in the concave curvature of the other molded part. The surface of the one molded part with the concave curvature preferably has rounded side regions, in particular convex side regions. The one molded part with the partially concave curvature accordingly has a surface facing the other molded part, which has a concave curvature in the center and in each case a convex curvature in the outer regions, the curvatures merging seamlessly into one another. The convex side areas are curved in such a way that a breaking off of the hair during winding around the molding and during molding on the molding is prevented. For this purpose, the convex curvature of the side areas is formed correspondingly large.

Preferably, in the alternative embodiment, the envelope of the moldings is egg-shaped. The molded part with the convex curvature is preferably arranged at the narrower end of the egg-shaped envelope. The formed in cross-section oval shaped parts with a partially concave or convex curved surface are particularly suitable for shaping waves, especially "water waves". In this case, the distance between the molded parts is preferably about 3 mm.

In a further preferred embodiment of the invention, the hair styling device is used to wave or curls of hair. The hair styling device is therefore preferably a wave shaper or curler.

• Figur 1 einen schematischen Querschnitt eines Ausführungsbeispiels eines erfindungsgemäßen Haarformgeräts,
• Figuren 2A und 2B jeweils eine schematische Ansicht eines Ausführungsbeispiels einer Einhüllenden eines erfindungsgemäßen Haarformgeräts,
• Figur 3 einen schematischen Querschnitt eines Ausführungsbeispiel eines nicht erfindungsgemäßen Haarformgeräts, und
• Figuren 4A und 4B jeweils einen schematischen Querschnitt eines Ausführungsbeispiels eines herkömmlichen Haarformgeräts während der Anwendung.

Further advantages, advantageous embodiments and further developments of the hair styling device will become apparent from the following in connection with the FIGS. 1 to 4 described embodiments. Show it:

• FIG. 1 a schematic cross section of an embodiment of a hair styling device according to the invention,
• FIGS. 2A and 2B each a schematic view of an embodiment of an envelope of a hair styling device according to the invention,
• FIG. 3 a schematic cross section of an embodiment of a hair styling device not according to the invention, and
• FIGS. 4A and 4B each a schematic cross-section of an embodiment of a conventional hair styling device during use.

In the exemplary embodiments and figures, identical or identically acting components may each be provided with the same reference numerals. The illustrated components and their proportions to each other are basically not to be considered as true to scale. Rather, individual elements such as layers, parts, elements, components and areas for exaggerated representability and / or for better understanding can be shown exaggerated thick or large dimensions.

In the FIGS. 4A and 4B is a conventional hair styling device 10, in particular a Wellenformer, shown for shaping hair 4. FIG. 4A shows the hair styling device 10 during insertion of the hair 4 in the device. FIG. 4B represents the hair styling device the FIG. 4A during molding

The hair styling device 10 comprises a first mold part 1 a, a second mold part 1 b and a curved movable cover part 6, wherein the hair to be formed 4 between the mold parts 1 a, 1 b and the cover 6 are inserted, as in FIG. 4A shown. The Moldings 1a, 1b have a round cross-section. At this round cross-section, the hairs 4 are formed according to the respective rounding of the mold parts 1 a, 1 b. This forms of hair 4 is in FIG. 4B shown. For shaping, the curved cover part 6 is moved in the direction of molded parts 1a, 1b, so that the hairs to be formed are clamped or pressed between the molded parts 1a, 1b and the cover part 6. By heating the moldings 1 a, 1 b, the pinched hair 4 can be corrugated according to the curves of the mold parts 1 a, 1 b.

The result of curling the hair with the conventional hair styling device 10, as for example in the FIGS. 4A and 4B is shown, however, is usually not satisfactory, since the hair 4 are merely compressed and thus the transformation takes place only two-dimensionally. In addition, with such a conventional hair styling device only normal waves and no "water waves" can be generated.

In FIG. 1 is a schematic perspective cross-sectional view of a hair styling device 10 according to the invention shown, which is suitable for curling and wave formation of hair to be formed, in particular for the formation of "water waves". In particular, a cross section through the hair shaping region 10 in the region of molded parts 1 a, 1 b is shown. The embodiment of FIG. 1 shows therefore a cross section through the mold parts 1 a, 1 b of the hair styling device 10th

The hair styling device 10 preferably comprises exactly two molded parts which extend parallel to one another in a longitudinal extension of the hair styling device 10 and can be heated to form the hair. The mold parts 1a, 1b are used for winding and shaping the hair and are firmly connected at one end. In particular, the mold parts 1 a, 1 b are not mutually movable, but fixed to each other fixed. For example, the mold parts 1 a, 1 b are fixedly mounted at one end to a handle part.

The mold parts 1a, 1b each have an oval cross-section which differs from a circular shape and an elliptical shape. In this case, the surfaces 2a, 2b of the molded parts, which are arranged opposite, partially planar formed. Only side areas of the surface of the moldings, which are opposite each other are arranged, deviate from the planar configuration. These side areas are preferably rounded. Any curves of the surfaces of the moldings preferably have radii in a similar degree. Preferably, all radii of the curves of the mold parts 1a, 1b are each about 5 mm. Rounding with such a radius prevent during molding in particular damage and breaking off the hair to be formed, which are wound around the moldings. In addition, with the curves of such a radius, a satisfactory result of the curls or waves can be generated.

The first molded part 1a and the second molded part 1b are circumscribed by an envelope 3 whose profile is elliptical or super-elliptical in cross-section. The envelope 3 is formed by outer surfaces of the mold parts 1 a, 1 b. Interruptions such as a distance between the mold parts 1a, 1b are continued to form the envelope 3 without interruption. The elliptical envelope 3 has a long half-axis and a short half-axis. The long half-axis is in FIG. 1 vertically and the short half-axis aligned horizontally. Further explanations and embodiments of the envelope 3 are in connection with the FIGS. 2A and 2B described.

The hair styling device 10 is formed along the long half-axis and the short half-axis of the envelope 3 in the region of the mold parts 1a, 1b axisymmetric. In particular, the first molded part 1 a to the second molded part 1 b is formed mirror-symmetrically to the short half-axis. In addition, the molded parts 1 a, 1 b are formed mirror-symmetrically to the long half-axis.

Due to the curves and the mirror-symmetrical design of the molded parts, a direction-independent application of the hair styling device 10 can be ensured. This simplifies for the user with advantage the handling of the hair styling device 10. In particular, advantageously simplify applications, for example, at the back of the user.

Between the mold parts 1a, 1b a distance A in the form of a gap 5 is formed. The gap 5 separates the mold parts 1 a, 1 b completely apart from the connected end. In particular, the gap 5 extends along the longitudinal extent of the Hair styling device 10 to the handle part. The distance A between the mold parts 1 a, 1 b along the long half-axis is preferably between 2 mm inclusive and 10 mm inclusive, in this case 8 mm. A half width b / 2 of the gap 5 along the short half-axis is preferably between 8 mm inclusive and 12 mm inclusive, here 10 mm. In the gap 5, the hair to be formed is inserted for use of the hair styling device 10 and then wound around the mold parts 1 a, 1 b. The thus formed hair styling device 10 is particularly suitable as a wave shaper.

In the FIGS. 2A and 2B In each case, an envelope 3 is shown, which circumscribes the molded parts and simulates the outer contour of the hair styling device in the region of the molded parts. The envelope 3 of the FIG. 2A For example, gives the elliptical envelope of the embodiment of FIG. 1 again. The envelope 3 has a long semiaxis a and a short semiaxis b preferably in a ratio of 5 to 4, preferably 2 to 1. The long semiaxis a preferably has a length of between 3.5 cm and 4.5 cm inclusive , preferably 4 cm. The radius of curvature of the elliptical envelope at the curved ends is preferably 5 mm. In FIG. 2A the diameter c of the bend of the elliptical envelope is indicated at one of the curved ends, which is preferably 10 mm. The elliptical envelope preferably has in the middle in horizontal extension and perpendicular to the long half-axis 4, a gap in which the hair is inserted, as for example in connection with the embodiment of FIG. 1 is shown.

In FIG. 2B an alternative envelope 3 is shown which has a super-ellipse shape.

In FIG. 3 an alternative embodiment of a non-inventive hair styling device 10 is shown, in contrast to the in FIG. 1 illustrated embodiment has an egg-shaped envelope 3. In addition, the surfaces 2 a, 2 b of the molded parts, which are arranged opposite one another, are not flat in regions, but each have a curvature. In particular, the surface 2a of the first mold part 1a, which faces the second mold part 1b, has a concave curvature or curvature, that is to say a negative curvature. This concave curvature is formed centrally in the horizontal direction. The concave curvature is laterally each with an adjacent convex curvature of the surface 2a completed. In this case, the convex curvatures round off the surface 2a toward the side of the molded part 1a, so that no edge is formed at which the hairs to be formed may be damaged or break. The surface 2b of the second mold part 1b, which faces the first mold part 1a, has a convex curvature or curvature. The convex curvature is formed corresponding to the opposite concave curvature, thus corresponding to the concave curvature, so that the convex curvature of the second molded part 1 b is formed engaging in the concave curvature of the first mold part 1 a.

The distance between the mold parts 1 a, 1 b is preferably 3 mm. The cross-sectionally oval molded parts 1a, 1b with a partially concave or convex curved surface are particularly suitable for shaping curls.

The explanation of the hair styling device according to the invention with reference to the embodiments described above is not to be regarded as limiting the invention to these. Rather, the invention encompasses any novel feature as well as any combination of features, including in particular any combination of features in the claims.

Drawing reference list

10

The hair styling appliance

1 a, 1 b

molding

2a, 2b

surface

3

envelope

4

hair

5

gap

6

cover

A

Distance of the moldings to each other

A / 2

Half the distance between the moldings to each other

a

long half-axle

b

short half-axle

b / 2

half short half axis

B

Diameter of the oval cross-section

Claims (7)

1. Hair styling device (10), in particular for curling or waving, with a first moulded part (1a) and a second moulded part (1b) for winding and shaping hair (4), which are permanently connected to each other at one end so that they cannot move in relation to one another and which run at a distance from one another, wherein the first moulded part (1a) and the second moulded part (1b) each have an oval cross-section differing from the shape of a circle,
   wherein the first moulded part (1a) and the second moulded part (1b) are surrounded by a sleeve (3), the profile of which having an ellipse-shaped cross-section, preferably a superellipse-shaped cross section,
   the hair styling device (10) has axial symmetry along a short semi-axis (b) of the sleeve (3) and/or along a long semi-axis (a) of the sleeve (3), and
   the hair styling device (10) is a hair styling device which can be used regardless of direction.
2. Hair styling device according to claim 1, wherein
   the first moulded part (1a) and the second moulded part (1b) can be heated to shape the hair (4).
3. Hair styling device according to one of the preceding claims, wherein
   the long semi-axis (a) of the sleeve (3) and the short semi-axis (b) of the sleeve (3) have a ratio of 5 to 4, preferably of 2 to 1.
4. Hair styling device according to one of the preceding claims 3, wherein
   the long semi-axis (a) has a length ranging between 3.5 cm and 4.5 cm inclusive, preferably 4 cm.
5. Hair styling device according to one of the preceding claims, wherein
   a distance (A) between the first moulded part (1a) and the second moulded part (1b) amounts to between 2 mm and 10 mm inclusive, preferably 8 mm.
6. Hair styling device according to one of the preceding claims, wherein
   one surface (2a, 2b) of the first moulded part (1a) and of the second moulded part (1b) in each case, which are arranged opposite to each other, are embodied so as to be level at least in parts.
7. Hair styling device according to one of the preceding claims, wherein
   one surface (2a, 2b) of the first moulded part (1a) and of the second moulded part (1b) in each case, which are arranged opposite to each other, each have a convex or concave curvature respectively, at least in parts.

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