EP2845511A1 - Hair iron - Google Patents

Abstract

There is provided a hair straightener (10) having a first device arm (1, 1A) and a second device arm (1B) for treating hair (H). The device arms (1, 1A, 1 B) are connected to each other via a joint (1C) and movable relative to each other. The hair straightener (10) further comprises at least one curling device (4) which can be fastened or fastened to the first device arm (1), wherein the curling device (4) the diameter of the first device arm (1, 1A) on a second Gerätearm ( 1B) opposite side enlarged. Between the curling device (4) and the first device arm (1, 1A), thermal insulation is arranged at least in regions.

Description

The present invention relates to a hair straightener with two mutually movable arms and device with at least one curling device.

With traditional hair straighteners curls can often be formed in addition to straightening hair. For this purpose, the strand of hair to be treated is placed near the hairline between the arms of the device, taken the strand of hair with the free hand, rotated the hair straightener 180 ° about its longitudinal axis and pulled the hair strand in the rotated state through the arms of the device. The result of hair styling is corkscrew curls.

In order for an acceptable curl result to be achieved in this way, the hair should cool down during the redirection phase so that previously dissolved or weakened hydrogen bonds and ionic interactions stabilize in the new deflected shape. In conventional hair straighteners, this required cooling takes place through the outer housing of the arms of the device. As a result, however, the diameter of the curls forming is disadvantageously fixed by the diameter of the arms of the device. A flexible and adapted to the user curl diameter can not be achieved by these conventional hair straightener.

The object of the present application is therefore to provide an improved hair straightener, which is characterized inter alia by a flexible application, in particular by forming different curl diameters.

This object is achieved by a hair straightener with the features of claim 1. Advantageous developments of the invention are the subject of the dependent claims.

According to the invention, a hair straightener with a first device arm and a second device arm for treating hair is provided, wherein the device arms are connected to one another via a joint and are movable relative to each other. The hair straightener further comprises at least one curling device which can be fastened to the first device arm or attached, wherein the curling device increases the diameter of the first device arm on a side opposite the second device arm side. Between the curling device and the first device arm, a thermal insulation is at least partially arranged.

By the curling device is advantageously the diameter around which the hair is wound during the curling process, individually adjustable. By means of a single hair straightener curling can be made flexible due to the curling device with advantage, by offering the user the possibility of different degrees defined curls. In particular, defined by the Gerätearm a first possible curl diameter and the curling device, a further, in particular larger curl diameter.

The thermal insulation between the curling device and the device arm advantageously allows cooling of the hair in its deflection phase. As a result, the previously dissolved or weakened hydrogen bonds and ionic interactions in the deflected and thus curled form stabilize upon heating. An improved curl shaping is thus possible with advantage.

In the present case, a "curling device" is to be understood as meaning, in particular, a device which is suitable for shaping curls of, in particular, heated hair. For example, a part-circular body which is preferably directly downstream of a heating region of the hair straightener is suitable for this purpose. Particularly preferably, the curling device is thermally insulated from the heated area.

By "thermal insulation" is meant in the present case, in particular, any insulation which is suitable for preventing or at least weakening heat transfer from the heated region or components of the hair straightener, such as the first device arm, to the curling device. For example, a thermal space or a distance between the curling device and the first device arm, which contains air, is suitable as thermal insulation.

In the present case, the term "attachable" is to be understood in particular as any attachment of the curling device to the first device arm, which can be released again by the user. Preferably, the curling device is repeatably attachable to the device arm. This means that the user can repeatedly attach the curling device on the first device arm as needed and also replace it again.

In the present case, the term "fastened" is to be understood to mean in particular any attachment of the curling device to the first device arm, which is unsolvable or fixed or fixed. The curling device is therefore not removable from the user from the first device arm here. However, the curling device can be flexibly attached to the first device arm so far that it is movable at least relative to the first device arm, for example, can be folded away from the first device arm. In this case, however, the curling device is firmly connected at least in one area further to the first device arm.

In the present case, the term "increase the diameter" is to be understood in particular as meaning that the curling device attached to the first device arm increases the outside dimensions of the first device arm. As a result, advantageously increases the diameter of the hair straightener, which is provided for curling, thereby increasing the curl diameter formed compared to the straightener without curling device.

In a preferred embodiment of the hair straightener, the thermal insulation is formed from air. For example, at least in regions, a distance between the curling device and the first device arm, which contains air. The air causes a deterioration of the thermal conductivity between the device arm and curling device. Thus, heat transfer from the first device arm to the curling device is reduced or even prevented, so that the curling device does not unnecessarily heat up during operation of the hair straightener. Mutual and excessive heating of the components of the hair straightener can thus be counteracted.

In a further preferred development of the hair straightener, the curling device is formed by way of a half shell. The half-shell is preferably part-circular educated. This means that the curling device at least partially has a round outer shape, which is suitable and intended for hair treatment. The round shape can prevent damage to the hair such as hair abrasion during curling.

In a further preferred development of the hair straightener, the first device arm has grooves which are guided in a longitudinal direction of the first device arm and onto which the curling device can be pushed. Preferably, edges of the grooves are deburred and rounded, so that hair passed by takes no damage during the curling process with the hair straightener without curling device.

Due to the releasable attachment of the curling device to the first device arm, it is possible to cool the curling device separately before the hair-forming process or between the forming of individual hair strands. For this example, the curling device placed in a refrigerated compartment, cooled there and then pushed onto the first Gerätearm and used for curling. Preferably, the hair straightener is accompanied by a plurality of lock devices which can be slid onto the first device arm, so that the user can replace this curling device if necessary, that is to say in particular when the curling device used heats up. This ensures an optimal curl result.

Additionally or alternatively, it is advantageous to add to the hair straightener a plurality of curling devices having different diameters in the regions intended for forming. Thus, advantageously different curls depending on the curling device can be formed.

In a further preferred development of the hair straightener, the curling device has an electrically conductive material which counteracts a static charge on the hair, which may occur as a result of the rubbing of the hair. For example, this is a light metal such as aluminum or an electrically conductive plastic, which is offset, for example, with silver particles, graphite or carbon nanotubes, or which is itself conductive by a specific arrangement of individual plastic polymers.

In a further preferred development of the hair straightener, air-filled cavities are integrated in the curling device, for example in the form of air bubbles. The air causes a deterioration of the thermal conductivity, which counteracts excessive heating of the curling device. Additionally or alternatively, the curling device can be configured double-walled, so that a thermal insulation over trapped air is also advantageously formed.

In a further preferred development of the hair straightener, the curling device can be folded away from the first device arm and can be fixed in the folded-away state on the first device arm. Preferably, the fixing is formed via a fixing device attached to the curling device and via a notch formed on the first device arm. Preferably, the curling device is firmly or fixedly connected to the first device arm on one side. Particularly preferably, the solid compound is formed by a hinge. The fixing aid is preferably attached to the curling device with a further hinge, whereby the fixing aid can be folded away from the curling device. The fixing aid is designed for example in the form of one or more rods.

In order to change the curl diameter to be formed, the curling device and the fixing aid are folded away from the first device arm, the fixing aid is folded away from the curling device and placed and fastened in the notch provided for this purpose. For fixing the folded-away components when not in use in the rest position, the hinges preferably each have a prestressed spiral spring, which causes an automatic contact of the curling device on the first device arm or a locking of the fixing aid in the notch.

In a further preferred development of the hair straightener, the curling device is formed by a flexible element which can be fastened in different positions on the first device arm. For example, the flexible element in the form of a half-cylinder is attached to a device arm outside. Preferably, the flexible element can be set by snapping into a notch of the first device arm. As a result, advantageously, the diameter of the first device arm can be increased. Preferably, the flexible element on a first device arm side facing struts, preferably metal strips of spring steel, through a bend and thus rest with a bias in the unused state of the hair straightener on the first Gerätearm. The flexible element preferably comprises a conductive silicone, a conductive coated polyurethane (PU), rubber or a coated or uncoated fabric of plastic or natural fiber.

In a further preferred development of the hair straightener, the curling device has a heat-reflecting film on a side facing the first device arm. Preferably, the film is a silver foil. Through this film advantageously a heat transfer, for example in the form of radiant heat, can be reduced from the first device arm to the curling device.

In a further preferred development of the hair straightener, the curling device comprises at least one rotatable roller on which the hair can be pulled along during treatment. As a result, the tying process can be designed to be even more gentle on the hair due to the avoidance of defective friction. In particular, when passing the hair, the static friction between the hair and the roller surface causes rotation of the roller about its longitudinal axis. Preferably, the roller is attached at each end to a strut of the curling device. Particularly preferably, the curling device has a plurality of such rotatable rollers.

In a further preferred development of the hair straightener, the second device arm has a second curl device, which enlarges the diameter of the second device arm on a side opposite the first device arm. Embodiments of the second curling device can be designed according to the embodiments of the first curling device.

Preferably, the curling devices are arranged directionally independent on the arms of the device. This means that the arrangement of the curling devices on the first device arm and the second device arm are formed point-symmetrical to each other. The point symmetry is aligned relative to a center of the hair straightener in cross section.

Alternatively, it is possible to form the arrangement mirror-symmetrical.

Figuren 1A bis 1D

jeweils einen schematischen Querschnitt eines Ausführungsbeispiels eines Gerätearms eines erfindungsgemäßen Haarglätters,

Figur 2

einen schematischen Querschnitt eines Ausführungsbeispiels eines erfindungsgemäßen Haarglätters,

Figuren 3A bis 3C

jeweils einen schematischen Querschnitt eines Ausführungsbeispiels eines Gerätearms eines erfindungsgemäßen Haarglätters,

Figur 4

eine schematische Ansicht eines Ausführungsbeispiels einer Lockenvorrichtung eines erfindungsgemäßen Haarglätters,

Figuren 5A bis 5C

jeweils einen schematischen Querschnitt eines Ausführungsbeispiels eines Gerätearms eines erfindungsgemäßen Haarglätters,

Figuren 6A und 6B

jeweils einen schematischen Querschnitt eines Ausführungsbeispiels eines erfindungsgemäßen Haarglätters, und

Figur 7

einen schematischen Querschnitt eines Ausführungsbeispiels eines Gerätearms eines erfindungsgemäßen Haarglätters.

Further advantages, advantageous embodiments and developments of the hair straightener, in particular the curling device, will become apparent from the embodiment described below in conjunction with the figures. Show it:

Figures 1A to 1D

each a schematic cross section of an embodiment of a device arm of a hair straightener according to the invention,

FIG. 2

a schematic cross section of an embodiment of a hair straightener according to the invention,

FIGS. 3A to 3C

each a schematic cross section of an embodiment of a device arm of a hair straightener according to the invention,

FIG. 4

a schematic view of an embodiment of a curling device of a hair straightener according to the invention,

FIGS. 5A to 5C

each a schematic cross section of an embodiment of a device arm of a hair straightener according to the invention,

Figures 6A and 6B

each a schematic cross section of an embodiment of a hair straightener according to the invention, and

FIG. 7

a schematic cross section of an embodiment of a device arm of a hair straightener according to the invention.

In the figures, the same or equivalent components may each be provided with the same reference numerals. In the embodiments, the components shown and their proportions to each other in principle are not to be regarded as true to scale. Rather, individual elements such as layers, parts, elements, components and areas for better representability and / or be shown exaggerated thick or large dimensions for better understanding.

Figure 1A shows a cross section of a first device arm 1, which is part of a hair straightener, such as in FIG. 2 is shown. The Gerätearm 1 has on one side a heating plate 2, which is provided for hair treatment. In particular, the hair to be treated are heated to the heating plate 2 and smoothed in the case of hair straightening. The heating plate 2 is attached to the Gerätearm 1. The device arm 1 is further formed by a device housing. On the opposite side of the heater plate 2 of the device arm, the housing has a rounding, which is suitable, inter alia, to corkscrew the device arm 1 twisted hair corkscrew.

Such device arms 1 can only create a curl size of the hair to be treated due to the fixed diameter of the housing. In order to be able to form flexible curls sizes and curls with only one hair straightener, according to the invention a curling device is provided which can be fastened to the first device arm 1. For attachment, the first device arm 1 has two laterally extending grooves 3A, which extend in the longitudinal direction of the first device arm 1. Edges of these grooves 3A are deburred and rounded to avoid hair damage such as hair abrasion during hair treatment.

On the grooves 3A of the first device arm 1 can now be pushed as needed, a curling device 4, as in FIG. 1B is shown. The curling device 4 is presently designed as a part-circular half-shell, which increases the diameter of the first device arm 1, over which the hair to be curled is wound. The curling device 4 comprises an electrically conductive material, which counteracts a static charge by the rubbing of the hair.

Between the first device arm 1 and the curling device, an air space is arranged, which serves as a thermal insulation. As a result, in particular a heat transfer from the first device arm 1 is prevented on the curling device 4, whereby an excessive heating of the curling device 4 during the hair treatment can be prevented. By this thermally insulated curling device 4, the hair heated to the heating plate 2 in a wound shape be cooled. New hydrogen bonds and ionic interactions can thus advantageously form in a tortuous shape of the hair, resulting in stable curls of the treated hair strand.

The curling device 4 can be cooled due to its releasable attachment to the first Gerätearm 1 in the case of their heating during the hair treatment, for example, in a refrigerated compartment and then used again for Haarlockung. Also, the hair straightener may be a plurality of such curling devices 4 enclosed so that they can be used or cooled as needed.

The hair straightener can be accompanied by a plurality of such curling devices 4, all of which have a different diameter. As a result, individually different curls can be generated. Curling devices 4 with different diameters are in the FIGS. 1B to 1D shown. The curling devices 4 are attached to the first device arm 1 by means of the grooves.

In FIG. 2 an inventive hair straightener 10 is shown, for example, a curling device 4 of the embodiments of FIGS. 1B to 1D on each of its arms 1A, 1B. The curling devices 4 are in each case pushed onto the respective device arm 1A, 1B by means of the grooves. The device arms 1A, 1B are movably connected to each other via a hinge 1C in order to be able to introduce the hair to be treated between the arms 1A, 1B and between the heating plates 2.

In the FIGS. 3A to 3C an alternative curling device 4A, 4B is shown, which is fixedly connected at one end to the first Gerätearm 1. For example, the curling device 4A, 4B is attached to the first Gerätearm 1 with a hinge. The curling device is composed of a semicircular element 4A and a fixing aid 4B, such as a rod, together. The element 4A and the rod 4B are also connected to each other via a hinge. To change the diameter of the first device arm 1 by means of the curling device 4A, 4B, the device arm 1 on the opposite side of the heating plate 2 notches 3B, which are formed to fix the rod 4B of the curling device in an unfolded state.

The curling device 4A, 4B in the rest position is in FIG. 3A shown. The rest position is to be understood in particular the position in which the curling device is not intended for use. To use the curling device, this, as it is in FIG. 3B is shown folded away from the first device arm 1, so that the rod 4B is folded out. Subsequently, the curling device, in particular the rod 4B is finally fixed in the desired position via one of the notches 3B, as shown in FIG FIG. 3C is shown.

In order to fix the curling device 4A, 4B when not in use or in the final position, the hinges 4C, for example, a biased coil spring, which cause an automatic concern to the Gerätearm 1 and a locking of the rod 4B in the notch 3B.

For the thermal insulation of the curling device 4A, 4B of the first device arm 1, in addition to the distance containing air also a heat-reflecting silver foil may be provided, which is arranged on the device arm 1 side facing the element 4A (not shown).

The embodiment of FIG. 4 shows a curling device 4, which is designed as a flexible element. The curling device 4 is in the form of a half-cylinder and has an outer component 4A, for example made of silicone, and internally mounted struts 4B, for example in the form of metal strips of spring steel. The struts 4B are by a corresponding bend and thus by a certain bias in the idle state at the first device arm or snap in the used state in a notch of the first device arm.

The curling device 4 of the embodiment of FIG. 4 is in the attached state in the FIGS. 5A to 5C shown. Here, the curling device can be fixedly connected to the first device arm 1 on one side or removably attached to the first device arm 1. To change the diameter of the device arm 1 for flexible curl molding, the user can the curling device 4 from the rest position

(shown in FIG. 5A ) by bending the flexible curling device 4 in the provided notch 3B of the first device arm 1 and thus set the desired diameter for curl (shown in the FIGS. 5B, 5C ).

The FIGS. 6A . 6B show exemplary embodiments of hair straighteners, which each have a curling device 4 on both arms 1. The curling device is, for example, according to the embodiment of FIG. 4 educated.

In FIG. 6A the curling devices 4 are arranged directionally independent on the arms of the device, so that a direction-independent hair treatment allows. For this purpose, in particular, the curling devices are point-symmetrically attached to the respective device arm 1. A hair strand H to be shaped can be guided between the heating plates and along one of the curling devices 4 for curl formation.

In FIG. 6B a hair straightener is shown which has opposite curling devices 4 of the device arms 1.

FIG. 7 shows a device arm 1 with attached curling device 4, which is designed even gentler for the hair to be treated. For this purpose, the curling device 4 has rotatable or rotating rollers 5 on the side with which the hair is in contact during curling. As soon as the hair is guided past the curling device 4, the static friction between hair and rollers 5 causes a rotation of the rollers 5 about their longitudinal axes. A possibly occurring defective friction, which may for example lead to a loss of dandruff, can be avoided with advantage. The rollers 5 can at each end to a as in connection with FIG. 4 be fastened strut described. The curling device as a flexible element can according to the curling of the FIG. 4 be designed.

The explanation of the hair straightener 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 includes every new feature and every combination of features, which in particular any combination of features in the Claims even if this feature or combination itself is not explicitly stated in the claims or the embodiments.

LIST OF REFERENCE NUMBERS

1, 1A, 1B

device arm

1C

joint

10

hair straightener

2

heating plate

3A

groove

3B

score

4

curling device

4A

semicircular element, flexible element

4B

Staff, strut

4C

hinge

5

rotatable roller

H

hair to be treated

Claims (10)

Hair straightener (10) having a first device arm (1, 1A) and a second device arm (1B) for treating hair (H) which are connected to one another via a joint (1C) and movable relative to one another, and with at least one curling device (4) fastened or fastened to the first device arm (1), the curl device (4) enlarging the diameter of the first device arm (1, 1A) on a side opposite the second device arm (1B), and between the curling device (4) and the first device arm (1, 1A) at least partially thermal insulation is arranged. The hair straightener of claim 1, wherein
the thermal insulation is formed from air. Hair straightener according to one of the preceding claims, wherein
the curling device (4) is formed over a half-shell. Hair straightener according to one of the preceding claims, wherein
the first device arm (1, 1A) has grooves (3A) which are guided in a longitudinal direction and on which the curling device (4) can be pushed. Hair straightener according to one of the preceding claims 1 to 3, wherein
the curling device (4) can be folded away from the first device arm (1, 1A) and can be fixed in the folded-away state on the first device arm (1, 1A). Hair straightener according to claim 5, wherein
the fixing is formed by a fixing aid (4B) attached to the curling device (4) and by a notch (3B) formed on the first device arm (1, 1A). Hair straightener according to one of the preceding claims, wherein
the curling device (4) is formed by a flexible element (4A) which can be fastened in different positions on the first device arm (1, 1A). Hair straightener according to one of the preceding claims, wherein
the curling device (4) has a heat-reflecting film on a side facing the first device arm (1, 1A). Hair straightener according to one of the preceding claims, wherein
the curling device (4) comprises at least one rotatable roller (5) on which the hairs (H) can be pulled along during treatment. Hair straightener according to one of the preceding claims, wherein
the second device arm (1B) has a second curling device (4) which increases the diameter of the second device arm (1B) on a side opposite the first device arm (1, 1A).

Images