EP2725938B1 - Heatable hair styling device - Google Patents

Description

The present invention relates to a heatable hair styling device.

There are various heatable hair-styling devices are known, which are adapted to assist under the action of heat and possibly additionally by mechanical action in a hair styling of hair or to help bring hair into a desired shape or give it a desired appearance ,

Hair straighteners are particularly known in which by introducing heat and simultaneously exerting a mechanical force, the hair to be treated are smoothed to give the hair the desired appearance. Such hair straighteners have at least one heatable plate (or heating plate), which is usually electrically heated. The at least one heatable plate usually has at least one flat section, which is brought into contact with the hair to be smoothed during operation. Known hair straightener usually have a further plate which is movable against the at least one heatable plate that between the two plates to be smoothed hair can be introduced and the introduced hair can be pressed by the further plate against the at least one heatable plate. The further plate may in particular also be formed as a heatable plate in order to provide a uniform heat input on both sides into the hair to be smoothed. Such hair straighteners often have a forceps-like shape, which makes it possible with one hand to move the at least one heatable plate and the other plate, including hair between them against each other.

EP 1 698 249 B1 describes a flat iron with a first pressing part and a second pressing part with steel plates, in which Heizdrahtelemente are installed. A buffer member is attached to the steel plate attached to the second pressing member. The buffer member is made of an elastic and heat-resistant material and received and held in a notch in the steel plate.

CN 201 624 260 U describes a hair straightener with a first arm and a second arm, on each of which a heating plate is arranged, wherein adjacent to one of the heating plates, a comb element for hair treatment is arranged.

It is an object of the present invention to provide an improved heatable hair styling device, in which the risk of damage to hair to be treated is minimized and at the same time a sufficient tensile force can be exerted on the hair to be treated and which is also produced in a particularly cost-effective manner.

The object is achieved by a heatable hair styling device according to claim - 1. Advantageous developments are specified in the dependent claims.

The heated hair styling device has a first arm and a second arm which are movable against each other, including hair to be formed therebetween. At least the first arm is provided with a heatable plate for heating hair to be formed, along which the hair is movable for shaping in a pull-through direction. At least one pulling element for exerting a tensile force on the hair to be formed is arranged next to the heatable plate such that hair moved in the pulling direction is moved in front of and / or behind the heatable plate via the pulling element.

By providing the tension member, the heatable plate can be provided with a very smooth surface in which the risk of damage to the hair to be treated is minimized, and nevertheless a sufficiently large tensile force can be provided so that the hair efficiently shaped in the desired manner can be. Since the tension element is arranged next to the heatable plate, it can be provided in a particularly cost-effective and practicable manner, which in particular does not require any additional adaptation of the heatable plate. The tension element can be designed in this way independently of the plate, for example, also be removable or relative to the heatable plate slidably or foldable. In particular, a plurality of tension elements can also be provided, wherein the individual tension elements can also be arranged at different locations.

If the at least one tension element is made of an elastic and heat-resistant material, the desired tensile force can be provided in a particularly gentle manner. Preferably, the at least one tension element made of heat-resistant silicone or polyurethane is made, since in this case in particular a high degree of resistance and a particularly hair-sparing design are possible.

According to one embodiment, the tension element or a plurality of tension elements is arranged such that hair moved in the pull-through direction is moved both before and after the heatable plate via the tension element or tension elements. In this case, the use of the heated hair styling device is not directional and can be operated in particular in a simple and comfortable way with both the right hand and with the left hand. It can e.g. a pulling element may be provided that extends such that areas of this are arranged both before and after the heatable plate. It is e.g. But also possible that in each case a tension element (or more tension elements) is arranged before and after the heated plate (or are).

If both the first arm and the second arm are each provided with at least one heatable plate, can be carried out in a particularly advantageous manner, a uniform heat input from two sides. It is e.g. also possible to provide several heatable plates on each arm.

According to one embodiment of the invention, the heatable plate on the first arm is held so flexible that it is movable in a direction substantially perpendicular to the pull-through direction relative to the at least one tension element. The mobility can be given in particular in the direction in which the first arm and the second arm are movable relative to each other. In this case, the resulting tensile force can be conveniently determined by the user by the degree to which the two arms are compressed, and the flexible holding can still avoid damage to the hair by too much pressure. The flexible holding can be realized for example by a holder taking advantage of spring tension.

According to one embodiment, the at least one tension element is removable and / or foldable and / or displaceable. In this case, the user can easily decide in a comfortable way, whether he wants to use the effect of the tension element or not.

According to an embodiment of the invention, the at least one tension member is made of an elastic and heat-resistant material and the heatable plate is mounted on the tension member such that at least a portion of the tension member depending on a pressure exerted on the heated plate by deformation differently far laterally next to the heated plate is pushed out. In this case, a flexible mounting of the heatable plate is provided by the material of the tension element at the same time and both flexible storage of the heatable plate and the provision of the desired tensile force are achieved in a compact and simple manner.

The heatable hair styling device may preferably be a hair straightener.

According to one embodiment, the at least one tension element has a flocking, a fiber material and / or a felt. With these materials, a gentle treatment of the hair and a sufficient tensile force can also be provided at the same time.

According to one embodiment, a plurality of tension elements is provided, which are arranged such that they grasp hair to be formed and thus exert tensile force on the hair. The grasping and exertion of traction may e.g. be realized by the geometric arrangement of the tension elements and / or mobility of the heatable plates relative to the tension elements.

Fig. 1

ist eine schematische Darstellung eines beheizbaren Haarformgeräts,

Fig. 2

ist eine schematische Darstellung eines ersten Arms mit einer beheizbaren Platte bei der ersten nicht erfindungsgemäßen Ausführungsform,

Fig. 3

ist eine schematische Darstellung des beheizbaren Haarformgeräts im Betrieb,

Fig. 4

ist eine schematische Darstellung des beheizbaren Haarformgeräts und eines in Form eines aufsteckbaren Rahmens ausgebildeten Zugelements,

Fig. 5a

ist eine schematische Darstellung eines beheizbaren Haarformgeräts gemäß einer zweiten Ausführungsform in einem Zustand ohne ausgeübten Druck,

Fig. 5b

ist eine schematische Darstellung des beheizbaren Haarformgeräts gemäß der zweiten Ausführungsform in einem Zustand mit ausgeübtem Druck,

Fig. 6a

ist eine schematische Darstellung eines beheizbaren Haarformgeräts gemäß einer dritten Ausführungsform,

Fig. 6b

ist eine schematische Darstellung des Haarformgeräts gemäß der dritten Ausführungsform im Betrieb,

Fig. 7

ist eine schematische Darstellung eines Zugelements gemäß einer Abwandlung und

Fig. 8

ist eine schematische Schnittdarstellung eines Zugelements bei einer bevorzugten Ausgestaltung.

Further advantages and advantages of the invention will become apparent from the following description of embodiments with reference to the accompanying drawings.

Fig. 1

is a schematic representation of a heated hair styling device,

Fig. 2

is a schematic representation of a first arm with a heatable plate in the first embodiment not according to the invention,

Fig. 3

is a schematic representation of the heated hair styling device in operation,

Fig. 4

is a schematic representation of the heated hair styling device and formed in the form of an attachable frame tension element,

Fig. 5a

Fig. 10 is a schematic view of a heatable hair-styling apparatus according to a second embodiment in a state without applied pressure;

Fig. 5b

Fig. 10 is a schematic view of the heatable hair-styling apparatus according to the second embodiment in a state of applied pressure;

Fig. 6a

is a schematic representation of a heatable hair styling device according to a third embodiment,

Fig. 6b

FIG. 12 is a schematic diagram of the hair styling apparatus according to the third embodiment in operation; FIG.

Fig. 7

is a schematic representation of a tension member according to a modification and

Fig. 8

is a schematic sectional view of a tension member in a preferred embodiment.

FIRST NON-INVENTION EMBODIMENT

The following is with reference to the Fig. 1 to Fig. 3 a first non-inventive embodiment described. Fig. 1 is a schematic representation of a heated hair styling device 1 according to the embodiment. In the embodiment, the heatable hair-styling device 1 is formed by a hair straightener (sometimes referred to as a straightening iron). The hair styling device 1 has a forceps-like structure with a first arm 2 and a second arm 3, which are connected to each other via a hinge on. The first arm 2 and the second arm 3 are connected to each other via the hinge so that a free end 2a of the first arm 2 and a free end 3a of the second arm 3 are movable towards and away from each other, as in FIG Fig. 1 is shown schematically by an arrow. On the first arm 2 and on the second arm 3, a heatable plate 4 is provided in each case. The hair styling device 1 is designed such that the heatable plates 4 are electrically heated. The heatable plate 4 may be formed, for example, by an aluminum profile provided with at least one electric heating element or by a plate made of, for example, glass, glass ceramic, ceramic, a temperature-resistant plastic or the like provided with at least one electric heating element. In the case of glass, in particular glasses are preferred which are suitable for use as a plate to be heated, such as quartz glass or borosilicate glass. To supply electrical power to the heated hair styling device 1, a cable 5 is provided for an electrical power supply. The heated hair styling device 1 is designed so that hair to be smoothed be brought between the two heatable plates 4, the two heatable plates 4 are moved to include the hair between them towards each other and the hair is smoothed by heat and applying a tensile force along the extension direction of the hair.

In Fig. 2 is schematically the arrangement of the heated plate 4 on the first arm 2 in a view of, for example, the free end of the first arm 2 shown. In Fig. 3 the heated hair styling device 1 is in operation in a view perpendicular to the view Fig. 1 shown, wherein the material of the first arm 2 is shown transparently to make underlying components recognizable. As in Fig. 3 can be seen, the heated hair styling device 1 is moved in operation in a direction of movement -D relative to the hair to be smoothed H, so that the hairs to be smoothed H are moved in a direction of passage D on the heated plates 4.

As in Fig. 2 and Fig. 3 is shown, the first arm 2 is provided with tension elements 6, which extend in a direction perpendicular to the pull-through direction D next to the heatable plate 4. The tension elements 6 are in relation to the pull-through direction D before and after (left and right in Fig. 3 ) of the heatable plate 4. The tension members 6 are made in the embodiment of an elastic and heat-resistant material. The tension elements 6 may in particular be made of heat-resistant silicone or polyurethane. Although in the Fig. 2 and Fig. 3 is shown that on both sides of the heated plate 4 each have a tension element 6 is arranged, it is also possible, for example, only on one side of the heated plate 4, a tension element 6 (or more tension elements 6) or provide, for example, on both sides of several separate tension elements 6 provide.

As in Fig. 2 is shown schematically, the tension elements 6 are arranged such that they project slightly above the heatable plate 4, so that the hair to be smoothed H get in any case in contact with the tension elements 6. Although in Fig. 2 is shown schematically that the first arm 2 has a curved cross-sectional shape, other shapes are possible. Although in Fig. 2 schematically a rectangular cross-section of the tension elements 6 is shown, these are not limited to this embodiment and, for example, other shapes, such as round, oval, triangular, polygonal, etc. are used and it is also possible that the tension elements. 6 form a hollow profile. The tension elements 6 may for example be fixedly attached to the heatable hair styling device 1, in particular firmly glued, clamped, screwed, positively connected to another component (eg via a groove profile) or be designed to be removable. The tension elements 6 may be fastened, for example, to the material of the first arm 2 or, for example, may also be arranged between the material of the first arm 2 and the heatable plate 4.

By providing the tension elements 6, the heatable plate 4 can be provided with a very smooth and hair-preserving surface, since it does not have to apply the required tensile force to the hair H to be smoothed. Despite such a smooth surface, in the embodiment, a desired resultant tensile force is exerted on the hair to be smoothed since the tension members 6 are provided. The height of the tension elements 6 and the degree of compressibility of the tension elements 6 can in particular be coordinated so that even with a very strong compression of the first arm 2 and the second arm 3 by a user no damage to the hair located between the arms.

A particularly preferred embodiment of the tension elements 6 is in Fig. 8 shown schematically. Fig. 8 is a schematic sectional view of a tension element 6, wherein the section is executed in a direction perpendicular to the main extension direction of the tension element. In other words, the viewing direction corresponds to the schematic sectional view of Fig. 8 the line of sight Fig. 2 , As in Fig. 8 As can be seen, the tension member 6 has an approximately T-shaped cross section, wherein a narrower lower portion of the T-shape is formed as a fixing portion 6a and a wider upper portion of the T-shape is formed as a pulling portion 6b, the thereto is intended to be brought into contact with the hair to be formed. In the illustrated embodiment, the tension element 6 is formed of heat-resistant silicone. In the embodiment, the attachment portion 6a is made solid and provided on its outside with a plurality of elongated projections which are substantially parallel to the main extension direction of the tension member 6 (ie, in a direction perpendicular to the plane of illustration of FIG Fig. 8 ). The pulling section 6b is formed integrally with the fastening section 6a and, in the illustrated embodiment, is designed in particular as a hollow profile with a cavity formed in the interior. Preferably, the tension element 6 in this case be designed such that a side of the pulling portion 6b facing the hair to be formed is concave in a relaxed state, as in FIG Fig. 8 schematically represented by weak curved lines L, and can be brought under pressure by elastic deformation in a substantially planar shape. In this case, a restoring force, which is caused by the residual stress of the material of the tension member 6, the desired tensile effect on the hair to be formed strengthen without the risk of damage to the hair. Furthermore, a uniform distribution of the tensile forces on the hair to be formed is achieved in this way, since the tension element 6, for example, in a region where more hair between the arms 2 and 3 are held, can yield more.

In the preferred embodiment of the heated hair styling device 1, an elongated recess is formed on or in the arm 2 or 3 adjacent to the heatable plate 4, in which the attachment portion 6a of the tension member 6 can be pressed under press fit, so that the elongated projections a support of the tension member 6 cause in the elongated recess. On the one hand, this retention prevents the tension element 6 from falling out and, on the other hand, provides a counterforce for the elastic deformation of the tension section 6b. Furthermore, in this embodiment, it is achieved that a user can remove the tension element 6 in a simple manner (for example, for cleaning) and, if necessary, can also simply replace it with a new tension element 6.

Since the tension elements 6 are arranged next to the heatable plate 4, the heatable plate 4 need not be specially adapted so that the tension elements 6 can be fastened.

The second arm 3 may be formed, for example, in the same way as the first arm 2. It can be provided with traction elements 6, for example. Preferably, the second arm 3 is also provided with tension elements 6. In this case, the tension elements 6 are preferably arranged on the second arm 3 in such a way that they lie opposite the tension elements 6 of the arm 2 when the arms of the heated hair styling device are closed. The tension elements 6 on the two arms can be arranged, for example, such that they touch each other in the closed state of the heated hair styling device, or for example, such that between these a small gap is formed.

It is e.g. but also possible that only the first arm 2 is provided with tension elements 6.

SECOND EMBODIMENT OF THE INVENTION

In Fig. 4 is schematically shown a non-inventive embodiment of the heated hair styling device 1, wherein in Fig. 4 below is a schematic plan view of the first arm 2 is shown from the inside. Since the second embodiment differs from the first embodiment only in the configuration of the tension member 6, only the differences will be explained below, and the same reference numerals as in the first embodiment will be used. The second embodiment differs from the first embodiment in that separate tension elements 6 are not provided on both sides of the heatable plate 4, but a tension element 6 is provided which is designed as a frame which can surround the heatable plate 4 on all sides. Trained as a frame tension member 6 can be placed on the first arm 2, that the tension member 6 surrounds around the heatable plate 4, as in Fig. 4 is shown schematically by an arrow. The tension element 6 can in turn be fixedly attached to the first arm 2 or, for example, also be removable, so that a user can decide for himself whether he uses the functionality of the tension element 6. The tension member 6 according to the second embodiment may preferably be made of the materials specified in relation to the first embodiment. In Fig. 4 the first arm 2 and the tension element 6 are shown in the manner of an exploded view.

THIRD EMBODIMENT

The Fig. 5a and Fig. 5b schematically show a third embodiment of the present invention. The third embodiment differs only in the configuration of the elastic tension member 6 and the arrangement of the heatable plate 4 of the first embodiment. For this reason, again, only the differences from the first embodiment will be explained and the same reference numerals will be used.

Fig. 5a shows the first arm 2 of the heated hair styling device 1 according to the third embodiment in a relaxed state, in which no pressure on the heated Plate 4 is exercised. Fig. 5b shows the first arm 2 of the heatable hair styling device 1 according to the third embodiment in a state in which a force acts substantially perpendicular to the surface of the heatable plate 4. The second arm 3 of the heatable hair styling device 1 may be formed in particular analogously to the first arm 2. In the third embodiment, the heated hair styling device 1 is configured such that the heatable plate 4 is mounted on the elastic, heat-resistant material that the tension element 6 forms. The heatable plate 4 may be connected to the material of the tension element 6, for example by gluing or another form of connection.

As in Fig. 5a can be seen, the material of the tension element 6 extends through the entire heatable plate 4 and is laterally slightly above the heatable plate 4 via. The dimensions of the heatable plate 4, the tension member 6 and the first arm 2 are dimensioned such that when pressure is applied in a direction substantially perpendicular to the surface of the heated plate 4 regions of the tension member 6 laterally between the material of the first arm 2 and heated plate 4 are pushed out so that they protrude beyond the surface of the heated plate 4. In this way, it is ensured even in the third embodiment that the tension element 6 exerts sufficient tensile force on the hair to be smoothed and at the same time the heated plates 4 do not act with too great a mechanical force on the hair. The tension element 6 is preferably again designed so that the protruding areas form laterally along the entire length of the heated flap 4.

FOURTH EMBODIMENT

Hereinafter, a fourth embodiment will be described with reference to FIGS Fig. 6a and Fig. 6b described. The fourth embodiment differs from the previously described embodiments in the arrangement of the heatable plates 4 on the first arm 2 and the second arm 3 and in the arrangement of the tension elements 6. Again, the same reference numerals are used and with respect to the tension elements 6, the same materials for Use that has been previously described.

In the fourth embodiment of the heated hair styling apparatus 1, the heatable plates 4 are respectively held movably on the first arm 2 and on the second arm 3 so as to be movable toward each other in the direction in which the first arm 2 and the second arm 3 are movable toward each other are, relative to the first arm 2 and the second arm 3 can move. In Fig. 6a and Fig. 6b By way of example, an attachment of the heatable plates 4 to the respective arm 2 or 3 via spring elements 7 is shown. On the edges of the first arm 2 and the second arm 3 on both sides of the respective heatable plate 4 tension elements 6 are arranged, which extend along the heatable plate 4.

The heatable plates 4 are movably mounted so that they project in a relaxed state, in which no force acts perpendicular to the plate surface, between the adjacent tension members 6, as in Fig. 6a you can see. On the other hand, when hairs H to be smoothed are sandwiched between the heatable plate 4 and the first arm 2 and the second arm 3 are moved against each other, a force in the direction perpendicular to the plate surface acts on the heatable plates 4. Under the influence of this force, the heatable ones move Plates 4 such that they withdraw between the adjacent traction elements 6 and the traction elements 6 engage with the hair H to be smoothed. By a suitable choice of the spring tension, with which the heatable plates 4 are held relative to the first arm 2 and second arm 3, the maximum acting on the hair to be smoothed mechanical force caused by the heated plates 4, can be adjusted ,

MODIFICATION

The following is with reference to the Fig. 7 nor a modification with respect to the configuration of the tension elements 6 described. In the embodiments described above, the tension members 6 were each made of heat-resistant silicone or polyurethane. According to the in Fig. 7 By contrast, the tension element 6 has a support structure 60 which is provided with a fiber collective 61. The individual fibers of the fiber collective 61 are arranged such that they extend in a direction substantially perpendicular to the pulling direction D of the hair.

As fibers, in this implementation both synthetic and natural fibers, e.g. Plant fibers or animal hair, especially wild boar bristles, are used.

In addition to an aligned fiber collective, as based on Fig. 7 has been described, other materials come into question for the tension element 6, such as a surface flocking or a felt material. The felt material may also employ the fibers described above.

The realization of the heatable hair styling device is further not limited to the embodiments described above, but also different realizations are possible.

Although only with respect to the basis of the Fig. 6a and Fig. 6b described tension members 6 have been described on both the first arm 2 and the second arm 3, it is also possible in the other embodiments to provide tension elements 6 on both arms. On the other hand, however, it is also possible, for example, to provide such tension elements only on one of the two arms.

The traction element 6 may be arranged (or the traction elements 6 may be arranged) such that they are removable from the heatable hair styling device 1, as e.g. has been described with reference to the second embodiment, or e.g. also be slidably or foldably attached to the hair styling device 1. Furthermore, in all embodiments, a permanent, firm connection between the tension element 6 (or the tension elements 6) and the other components of the hair styling device 1 is possible.

A removability of the tension members 6 may e.g. be realized in that the tension elements 6 have a support portion which cooperates positively with a receiving area on the heated hair styling device 1. The tension elements 6 may be e.g. secured by lateral insertion or by snapping and removed again.

It is also possible that the heated hair styling device different tension elements are added with different properties and the user desired Pull elements selects (eg the hair type or preferences) and attached to the heated hair styling device.

Claims (9)

1. Heatable hair styling device (1) having:

   a first arm (2) and a second arm (3), which can be moved counter to one another while enclosing hair to be styled in between,

   wherein at least the first arm (2) is provided with a heatable plate (4) for heating hair to be styled, along which plate the hair to be styled can be moved in a pull-through direction (D),

   and having at least one pulling element (6) arranged next to the heatable plate (4) for exerting a pulling force on the hair to be styled and arranged such that hair moved in the pull-through direction (D) is moved over the pulling element (6) in front of and/or

   behind the heatable plate (4), characterised in that

   the heatable plate (4) is held flexibly on the first arm (2) such that it is movable relative to the at least one pulling element (6) in a direction essentially perpendicular to the pull-through direction (D), and/or

   the at least one pulling element (6) is made of an elastic and heat-resistant material and the heatable plate (4) is mounted on the pulling element (6) such that at least one region of the pulling element (6) is pushed out by deformation to different extents laterally next to the heatable plate (4) as a function of a pressure exerted on the heatable plate (4).
2. Heatable hair styling device according to claim 1, characterised in that the at least one pulling element (6) is made of an elastic and heat-resistant material.
3. Heatable hair styling device according to one of the preceding claims, characterised in that the at least one pulling element (6) is made of heat-resistant silicone or polyurethane.
4. Heatable hair styling device according to one of the preceding claims, characterised in that the pulling element (6) or a plurality of pulling elements is arranged such that hair moving in the pull-through direction (D) is moved over the pulling element/pulling elements both in front of and behind the heatable plate (4).
5. Heatable hair styling device according to one of the preceding claims, characterised in that both the first arm (2) and the second arm (3) are each provided with at least one heatable plate (4).
6. Heatable hair styling device according to one of the preceding claims, characterised in that the at least one pulling element (6) can be removed and/or folded away and/or displaced.
7. Heatable hair styling device according to one of the preceding claims, characterised in that the heatable hair styling device is a hair straightener.
8. Heatable hair styling device according to one of the preceding claims, characterised in that the at least one pulling element (6) has a flocking, a fibrous material and/or a felt.
9. Heatable hair styling device according to one of the preceding claims, characterised in that a plurality of pulling elements is provided, which are arranged such that they grasp hair to be styled and thus exert a pulling force on the hair.

Images