EP3178346A1 - Hair forming device - Google Patents

Abstract

The present invention relates to a hair styling device (1) with a handle part (2), a heating part (3) with two mutually opposite heating surfaces (4,5) for heating the hair, shaping means (6) for shaping the heated hair, and a cooling part ( 7) with at least one cooling surface (8,9,10,11) for cooling the formed hair. According to the invention, the hair styling device (1) is characterized in that the shaping means (6) have a protruding shaping edge (12) formed on a heating surface (4) which can be retracted into a groove-shaped molding bed (13) in the opposite heating surface (5) ,

Description

The present invention relates to a hair styling device having a handle portion, a heating portion having two opposed heating surfaces for heating the hair, shaping means for shaping the heated hair, and a cooling portion having at least one cooling surface for cooling the formed hair.

A hair styling device with heating and cooling surfaces, for example, shows the EP 1 047 312 B1 , On an approximately rod-shaped heating element with slightly bulbous curved heating surface sits a movably mounted clamping element, by means of which the hair can be pressed onto the heating surface. On the back of the rod-shaped heating part sits a likewise rod-shaped cooling part with a likewise bulbous curved cooling surface, by means of which the running of the heating surface, heated hair can be cooled again. By the respective bulbous curvature while the hair is stamped a corresponding curvature and curls when the hair is wound by turning the hair styling device to the said two heating and cooling surfaces.

Another hair styling device shows that EP 0 897 275 B1 in which a shaping edge, around which the hairs heated by the heating surface are deflected, is provided as the shaping means, when the hairs are placed correspondingly around said shaped edge. A cooling surface, on which guide ribs extending transversely to the longitudinal direction of the hair-styling device are formed, in order to be able to guide the hair better over the cooling surface, adjoins said shaping edge.

Despite the various suggested hair-guiding agents, the efficiency of such hair-styling devices often suffers from incorrect operation, in particular such that the hairs to be formed are not wrapped sufficiently in the intended manner on the cooling surface, so that the hair after heating and in the heated state is not sufficient are cooled, so that the deformation is not frozen enough, so to speak, which counteracts the desired result.

In this respect, the above suggests EP 1 047 312 B1 to provide a sufficiently large temperature difference between the cooling surface and the heating surface in order to ensure sufficient cooling of the hair can. For this purpose, it is proposed to thermally decouple the cooling part by a thermal insulation element of the heating part and also blow through the rod-shaped cooling member by means of a fan cooling air, which can escape through openings in the cooling air part again.

Furthermore, from the WO 2005/067760 a hair styling device in the form of a pair of pliers known, the pliers legs wear on the one hand a U-shaped form element and on the other hand, a dipping into this U-shaped form element, substantially block-shaped form element. In each case a heating surface is formed on the two mold elements, which are each arranged slightly obliquely standing on the lateral legs of the mold elements, so that they face each other when driving apart of said mold elements. Hair drawn between the heating surfaces is heated over the heating surfaces and then guided through the remaining path of the U-shaped gap between the two mold elements so that curls of hair can be curled.

The known hair styling devices of the prior art are all in terms of their handling improved. In particular, a certain orientation of the hair styling device relative to the hair strands to be formed is regularly required even with symmetrically formed hair styling devices in order to achieve the desired result. In particular, a certain rotational movement of the device must often take place after inserting the strands of hair in order to bring the strands of hair in the direction of the forming edge or the heat sink. On the other hand, with asymmetrically shaped devices, it is often not obvious which orientation is the intended one. Overall, orientation difficulties of users often lead to incorrect operation.

Proceeding from this, the present invention seeks to provide an improved hair styling device of the type mentioned, which avoids the disadvantages of the prior art and the latter further develops in an advantageous manner. In particular, an easy-to-use hair styling device should be created, which excludes orientation difficulties and thus incorrect operation and still allows efficient, permanent hair shaping.

According to the invention this object is achieved by a hair styling device according to claim 1. Preferred embodiments of the invention are the subject of the dependent claims.

For this purpose, it is proposed to form the shaping means on the heating surfaces in such a way that they achieve the intended hair shaping without regard to a particular orientation of the device. According to the invention, the shaping means comprise a protruding shaping edge formed on a heating surface and retractable into a channel-shaped molding bed in the opposite heating surface. The heating surfaces thus have, on the one hand, an approximately wall-shaped, convex molding surface or edge and, on the other hand, a groove-shaped or groove-shaped concave molding surface, which can be moved into one another to form the hair, so that a cross-section viewed between the heating surfaces formed U-shaped or V-shaped heating gap is formed, which forms the hair regardless of the orientation of the hair styling device as a whole. Due to its shape, the arcuately curved heating gap forcibly shapes the hair in a corresponding shape, so that no special alignment of the device is to be considered.

In order to permanently impress the corresponding shape on the hairs formed by the heating surfaces, the cooling part of the hair styling device in a further development of the invention has opposing cooling surfaces between which the hairs formed by the heating surfaces are moved so that they are particularly efficient from opposite sides be cooled. This not only allows for an overall narrow design of the cooling part and thus of the entire hair styling device, but ensures cooling of the hair after the molding process, regardless of a particular orientation of the device, i. it is not necessary to ensure that the hair is actually passed over a cooling surface, since the hair is forcibly passed through the cooling gap formed between the opposing cooling surfaces.

In a further development of the invention, the cooling part comprises both sides of the heating surfaces, i. viewed in the direction of the hair movement through the heating surfaces before and behind said heating surfaces, cooling surfaces for cooling the hair both before and after the heating by the heating surfaces. On the one hand, this causes a particularly lasting impression of the hair shape by ensuring the necessary temperature difference of the hair before, during and after the molding process. On the other hand, the apparatus can thereby also be moved in both directions, i. It does not need to be applied to the hair in a special way.

In a particularly advantageous manner, in this case the cooling part or its cooling surfaces are symmetrical with respect to a longitudinal center plane passing through the heating surfaces.

The cooling surface pairs lying opposite one another on both sides of the heating surfaces advantageously each define a cooling gap which may advantageously be inclined at an acute angle to the aforementioned longitudinal center plane, preferably in an angular range of approximately 40 ° to 80 ° to the longitudinal center plane. In a symmetrical arrangement of the cooling surfaces while advantageously two mutually slightly V-shaped inclined arranged cooling gaps are formed on both sides of the heating surfaces.

Advantageously, also define the heating surfaces with their shape bed on the one hand and its projecting shape edge on the other hand, a total - roughly speaking - V-shaped heating gap. The arrangement of the two cooling gaps can be made such that they roughly - extend in the direction of the legs of said heating gap in the region of the inlet and outlet edges of the heating surfaces. However, the inclination of the cooling gaps may also vary with respect to the inclination of the legs of the heating gap. According to one embodiment of the invention, the cooling gaps may be mutually inclined, for example, shallower than said legs of the heating gap between the heating surfaces.

The two heating surfaces and in particular their mold bed or on the other hand their projecting shape edge are advantageously also formed symmetrically to the longitudinal center plane. Furthermore, it is advantageously provided that the forming edge and the forming bed are formed substantially complementary to each other, so that a heating gap is defined with substantially constant gap. In the inlet and outlet areas, the heating gap between the heating surfaces can easily widen to allow better shrinkage and drainage.

Depending on the desired shape different geometries of the heating gap between the heating surfaces are possible. For example, for sharper curly hair, a sharper and / or higher shaping edge as well as a narrower and / or deeper shaping bed may be provided. An advantageous embodiment of the invention may consist in that the legs of the aforementioned heating gap have a rounded transition into one another. The tip of the projecting shape edge advantageously has a rounding, wherein the sole of the shaped bed may also have a rounding.

In order to make the cooling of the hair before and / or after heating by the heating surfaces particularly efficient, the cooling part is associated with an active cooling device in the invention, which causes active cooling of the cooling surfaces and / of the hair. In particular, a cooling air device may be provided as the active cooling device. It is advantageously provided that at least one cooling surface, preferably each cooling surface of the cooling part, cooling air passage openings through which the hair to be cooled can be acted upon with cooling air. The said cooling air passage openings are in this case advantageously connected to a cooling air blower, which can suck in cooling air through said cooling air passage openings in the interior of the cooling part. Alternatively, the cooling air blower can blow out the cooling air through said cooling air passage openings, wherein the aforementioned However, a stronger cooling effect will be created by sucking in cooler air from the environment that has not yet been heated inside the unit.

In an advantageous embodiment of the invention, different hair shapes can be produced with the hair styling device, in particular, the hair styling device is optionally designed for straightening or curling the hair. For this purpose, the heating surfaces may be formed on separate heating elements, of which at least one is designed as a removable element having a plurality of differently shaped heating surfaces. By means of a change holder and / or a movable mounting of the heating element while the respective desired heating surface can be brought into the working position. Advantageously, both heating elements may be formed as such turning elements, which in addition to the aforementioned heating surfaces with the mold bed or the projecting mold edge may each have planar heating surfaces for smoothing the hair.

Fig. 1:

eine perspektivische Ansicht eines Haarformgeräts nach einer vorteilhaften Ausführung der Erfindung, das zwei zangenartig aufeinander zu und voneinander weg bewegbare Formschenkel aufweist,

Fig. 2:

einen Querschnitt durch die Formschenkel des Haarformgeräts aus Fig. 1 im Bereich des Heizteiles, der die Ausbildung der Heizflächen sowie der daran angrenzenden Kühlflächen zeigt, und

Fig. 3:

einen Querschnitt durch die Formschenkel des Haarformgeräts aus Fig. 1 ähnlich der Fig. 2, wobei die Heizelemente gewendet sind, so dass ein geometrisch anders geformter Heizspalt gebildet wird.

These and other features of the invention, which may form the subject of the present invention in combination and sub-combination, independently of their combination in the claims as well as per se, are apparent from the claims, also from the following description of a preferred embodiment and the accompanying drawings , In the drawings show:

Fig. 1:

a perspective view of a hair styling device according to an advantageous embodiment of the invention, the two forceps like one another and movable away from each other movable mold leg,

Fig. 2:

a cross section through the shaping legs of the hair styling device Fig. 1 in the region of the heating part, which shows the formation of the heating surfaces and the adjoining cooling surfaces, and

3:

a cross section through the shaping legs of the hair styling device Fig. 1 similar to the Fig. 2 , wherein the heating elements are turned so that a geometrically differently shaped heating gap is formed.

The hair styling device 1 shown in the figures comprises two substantially rod-shaped body parts 23 and 24, which are pivotally connected together at one end, so that the two body parts 23 and 24 are pivotable towards each other in the manner of a barbecue tongs and apart, the latter by a Not shown spring device supported can be. A body portion adjoining the pivot connection forms a grip part 2 on which the two body parts 23 and 24 can be gripped and compressed.

To the free ends of the body parts 23 and 24 toward a heating part 3 and a cooling part 7 are provided on each body part 23 and 24, which in the Figures 2 and 3 are shown in more detail.

As FIG. 1 shows, the heating part 3 comprises two heating elements 21 and 22, which are arranged on the mutually facing sides of the aforementioned rod-shaped body parts 23 and 24, so that they face each other. In the in FIG. 2 shown configuration, the heating elements 21 and 22 each have a heating surface 4 and 5, which are complementary to each other and movable into each other. The heating surface 4 of the heating element 21 essentially forms a wall-shaped, wedge-like projection whose rounded tip forms a shaped edge 6 which extends substantially in the longitudinal direction of the body part 23. To this projecting mold edge 12 is substantially complementary a trough-shaped mold bed 13 in the according to FIG. 2 formed lower heating surface 5, so that the two heating surfaces 4 and 5 are movable into each other with their convex or concave curvatures, as this FIG. 2 shows. Between the two heating surfaces 4 and 5 so that a substantially V-shaped heating gap is defined with two Heizspaltschenkeln 17 and 18, which merge into each other by said rounded shape edge 6.

The heating elements 21 and 22 can be heated in various ways, for example by gas, advantageously, electrical heating can be provided.

Laterally on both sides of the heating surfaces 4 and 5 then cooling surfaces 8, 9, 10 and 11 are provided on the body parts 23 and 24, which face each other in pairs and define on both sides of the heating surfaces 4 and 5 each have a cooling gap 15 and 16, in which the hair to be formed on the one hand before heating and on the other hand after heating by the heating surfaces 4 and 5 are cooled. As FIG. 2 shows, the cooling gaps defined by the cooling surfaces 8, 9, 10 and 11 may be slightly inclined to each other V-shaped, wherein in the illustrated embodiment, the cooling gaps are slightly flatter than the legs of the heating gap inclined to each other, see. FIG. 2 , and moreover, have a slight curvature opposite to the curvature of the heating gap. In the illustrated embodiment, said cooling gaps 15 and 16 are inclined at an angle 25 of about 60 ° to the longitudinal center plane 14. The arrangement of the cooling surfaces 8, 9, 10 and 11 is as symmetrical to said longitudinal center plane 14 as the arrangement of the heating surfaces 4 and 5 and their Form edge 12 and the forming bed 13, so that the hair styling device 1 is right and left usable.

The cooling surfaces 8, 9, 10 and 11 is advantageously associated with a cooling air blower 20, which can give cooling air through openings 19 in said cooling surfaces 8, 9, 10 and 11 cooling air on the hair to be cooled, in the illustrated embodiment no sucking, but a blowing air flow from the interior of the cooling parts 7 is provided in the cooling gap 15 and 16 into it.

The operation of the hair styling device 1 provides that hair strands between the two heating surfaces 4 and 5 by means of movement of the hair and / or by movement of the hair styling device to the forming edge 12 and in the heating gap 17, 18 is deformed, wherein both before pulling through the heating gap 17 and 18 as well as after this pulling the respective strand of hair in the two cooling gaps 15 and 16 is cooled. A special insertion of the strand of hair aligned with a molding edge or on the heat sink is just as little required as a special orientation or orientation of the hair styling device.

As FIG. 3 shows, it is advantageously provided in the hair styling device 1 that the two heating elements 21 and 22 each form alternating elements that can be reversed and secured in different positions on the body parts 23 and 24, so that different heating surfaces can be used. In particular, the two heating elements 21 and 22 each have on the side opposite the forming edge 12 or the forming bed 13 a further substantially flat heating surface 40 or 50, by means of which the hair can be smoothed. For this purpose, only the two heating elements 21 and 22 need to be mounted upside down on the body parts 23 and 24, as this FIG. 3 shows. In addition, the air cooling is preferably switched off.

Claims (18)

Hair-styling device having a handle part (2), a heating part (3) with two heating surfaces (4, 5) opposite one another for heating the hair, shaping means (6) for shaping the heated hair, and a cooling part (7) with at least one cooling surface (8 , 9, 10, 11) for cooling the formed hair, characterized in that the shaping means (6) comprise a protruding shaping edge (12) formed on a heating surface (4) and forming a groove shaped bed (13) in the opposite heating surface (5) is retractable. Hair-styling device according to the preceding claim, wherein the cooling part (7) has mutually opposite cooling surfaces (8, 9; 10, 11), between which a cooling gap (15, 16) is formed, through which the heating surfaces (4, 5) are formed Hair is movable through. Hair-styling device according to one of the preceding claims, wherein the cooling part (7) has cooling surfaces (8, 10; 9, 11) on both sides of the mutually opposite heating surfaces (4, 5) for cooling the hair before and after the heating of the hair by the heating surfaces (4, 5). Hair-styling device according to one of the preceding claims, wherein the cooling part (7) and / or its cooling surfaces (8, 9, 10, 11) with respect to a through the heating surfaces (4, 5) going longitudinal center plane (14) of the hair styling device (1) are formed symmetrically , Hair - styling device according to one of the preceding claims, wherein the cooling surfaces (8, 9, 10, 11) of the cooling part (7) define a cooling gap (15, 16) leading to a longitudinal median plane (14) of the heating element (4, 5) passing through the heating surfaces (4, 5) Hair styling device (1) at an acute angle, preferably in an angular range of 40 ° to 80 °, is inclined. Hair-styling device according to the preceding claim, wherein two mutually slightly V-shaped inclined cooling gaps (15, 16) are provided. Hair-styling appliance according to the preceding claim, wherein the cooling gaps (15, 16) are inclined to each other at a shallower than heating gaps (17, 18) defined at inlet and outlet sections of the heating surfaces (4, 5). Hair-styling device according to one of the preceding claims, wherein the heating surfaces (4, 5) are symmetrical with respect to a longitudinal center plane (14). Hair-styling device according to one of the preceding claims, wherein the shaped edge (12) and the forming bed (13) are formed substantially complementary to each other. Hair styling device according to one of the preceding claims, wherein the heating surfaces (4, 5) in the cross section of the hair styling device (1) define a substantially V-shaped heating gap (17, 18). Hair-styling device according to the preceding claim, wherein the two legs (17, 18) of the heating gap have a rounded transition into one another. Hair-styling device according to one of the preceding claims, wherein the cooling part (7) has an active cooling device for actively cooling the at least one cooling surface (8, 9, 10, 11). Hair-styling device according to one of the preceding claims, wherein at least one cooling surface, preferably each cooling surface (8, 9, 10, 11) of the cooling part (7) cooling air passage openings (19) for acting on the hair to be cooled with cooling air. A hair styling device according to the preceding claim, wherein a cooling air blower (20) is connected to the cooling air passage openings (19) via at least one cooling air duct. A hair styling device according to the preceding claim, wherein the cooling air blower (20) is formed as an intake device for sucking a cooling air flow from the environment through the cooling air passage openings (19) into the interior of the cooling part (7). A hair styling apparatus according to claim 14, wherein the cooling air blower (20) is formed as a blower for blowing cooling air from the inside of the cooling member (7) into the environment. Hair-styling device according to one of the preceding claims, wherein the heating surfaces (4, 5) are formed on separate heating elements (21, 22), at least one of which is designed as a turning element, which has a plurality of differently shaped heating surfaces (4, 40; 50), wherein a change holder for fixing the turning element is provided in different positions. Hair-shaping device according to the preceding claim, wherein both heating elements (21, 22) are designed as turning elements which, in addition to the heating surfaces (4, 5) with the forming bed (13) or the forming edge (12), each have a planar heating surface (40, 40). 50) for smoothing the hair.

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