EP2906075A1 - Heating plate for a hair-styling iron - Google Patents

Heating plate for a hair-styling iron

Info

Publication number
EP2906075A1
EP2906075A1 EP13774653.3A EP13774653A EP2906075A1 EP 2906075 A1 EP2906075 A1 EP 2906075A1 EP 13774653 A EP13774653 A EP 13774653A EP 2906075 A1 EP2906075 A1 EP 2906075A1
Authority
EP
European Patent Office
Prior art keywords
hair
heating
heating plate
recess
heating element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP13774653.3A
Other languages
German (de)
French (fr)
Other versions
EP2906075B1 (en
Inventor
Berthold Altmann
Thomas Copitzky
Christian Hafer
Marina Olenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Publication of EP2906075A1 publication Critical patent/EP2906075A1/en
Application granted granted Critical
Publication of EP2906075B1 publication Critical patent/EP2906075B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel
    • A45D1/04—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/28—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for controlling or indicating the temperature
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
    • A45D2/001—Hair straightening appliances
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D2001/004—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with a ceramic component, e.g. heater, styling surface

Definitions

  • the present invention relates to a hotplate for a hair straightener, in particular for a straightener.
  • the invention also relates to a hair straightener with at least one such heating plate.
  • Heatable hair styling devices in particular hair straighteners are well known and adapted to bring under the action of heat and optionally additionally by mechanical pressure / train the hair in a desired shape or to give them a desired appearance.
  • hair straighteners by applying heat and simultaneously exerting a mechanical force, the hair to be treated is smoothed.
  • Such hair straighteners in this case have at least one usually electrically heatable heating plate, which is brought into contact with the hair to be smoothed via a substantially flat and flat section.
  • they have an opposite second, optionally heatable plate between which and the heating plate to be smoothed hair introduced and pulled through under pressure to be smoothed can.
  • the present invention is based on the general idea, on one side of a base plate of a hotplate for a hair straightener to provide at least one recess which constitutes a heat flow obstacle and which thereby subdivides a first surface facing the hair to be smoothed into at least two different temperature zones.
  • the heating plate according to the invention in this case has a one-piece base plate, which has a trained for contact with hair to be formed first surface and a second surface opposite thereto.
  • at least one electrical heating element for example a PTC element, is in thermal contact with the second surface.
  • the previously described at least one recess is introduced, which constitutes the heat flow obstacle described above and thereby the first surface in at least divided into two different temperature zones.
  • the smoothing result can be significantly improved without, for example, having to provide two separate hotplates with correspondingly complex wiring and thus connected with comparatively difficult cleaning option.
  • a different degree of heating power can be provided in the at least two different temperature zones, wherein a heat transfer which overcomes this recess can be set by the geometric design of the at least one recess, for example with regard to its depth and / or width. The deeper or wider this recess is, the larger the heat flow obstacle produced thereby.
  • the base itself may for example be made of glass, ceramic, glass ceramic, temperature-resistant plastic, silicone or aluminum as the base material, whereby the introduction or provision of the recess according to the invention is relatively easy. In the case of glass, in particular glasses are preferred which are suitable for use as a heating plate, such as quartz glass or borosilicate glass.
  • the at least one recess is expediently designed as a groove with an angular or round cross-section and, in addition, two such grooves are provided which run through the second surface in the longitudinal direction, that is orthogonal to the direction of passage of the hair to be formed.
  • the length of the recesses is preferably the same length as the heating plate, that is, the recess passes through the heating plate Completely.
  • not completely continuous recesses are conceivable, in particular in the manner of broken lines, similar to a median strip of a road, which can also influence the heat transfer rate between the two separated by the recess temperature zones can be taken.
  • the at least one heating element is preferably arranged between the two grooves, so that there is a higher temperature temperature zone.
  • the two adjacent temperature zones have due to the heat flow obstacle generated by the respective recess / groove a low temperature during operation of the hair straightener, so that when pulling the hair to be formed between two such heating plates they experience a much stronger heating in the middle temperature zone than in the two edge temperature zones.
  • at least one further heating element is provided.
  • the heating plate according to the invention not only has to be heated by a single heating element, but for example in adjacent and separated by the recess / groove temperature zones another heating element can be provided, the optional, that is in particular as needed to or . can be switched off.
  • the heating power applied by only a single heating element is insufficient, so that in this case the at least one further heating element additionally contributes heating energy and thus also allows a fast and nevertheless effective smoothing of the hair.
  • the heating element is at least partially disposed in the recess. If the recess has, for example, a rounded cross-section, then it is conceivable that the at least one heating element with a cross-section configured to be complementary thereto is arranged inside this recess and thereby also permits different temperature zones on the first surface of the heating plate facing the hair to be formed. In theory, heating elements are also conceivable which have a discontinuous thickness, so that their heating power introduced into the base plate is dependent on the respective thickness and thus likewise a subdivided into different temperature zones heating the base plate is made possible.
  • a control of the individual temperature zones can take place via corresponding temperature sensors, which are connected to a control device.
  • the at least one recess does not have to have a linear shape, but for example can also be designed to meandering or otherwise running.
  • the heating elements or the at least one heating element can be applied for example in the manner of a coating on the second surface of the base plate of the heating plate.
  • Fig. 1 a hair straightener according to the invention at least one inventive
  • FIG. 2 is a sectional view through a first possible embodiment of the heating plate according to the invention
  • FIG. 3 is a view as in FIG. 1, but with partially arranged in the recess heating element
  • 4 is a representation as in Fig. 2, but with two further heating elements
  • Fig. 5 is a view of a second surface of the heating plate according to the invention with correspondingly arranged recesses.
  • an inventive hair straightener 1 has a forceps-like construction with a first arm 2 and a second arm 3, which are connected to one another via a joint 4.
  • the first arm 2 and the second arm 3 are connected to each other via the hinge 4 such that a free end of the first arm 2 and a free end of the second arm 3 are movable towards and away from each other, as shown in FIG is shown schematically by an arrow.
  • On the first arm 2 as on the second arm 3 each have a heating plate 5 is provided, which will be described in more detail below.
  • an electrical connection line 6 the hair straightener 1 can be connected to an electrical network.
  • the hair to be smoothed can be brought between the two heating plates 5, in which case the two heating plates 5 are moved towards the hair between them and the hair is smoothed by the action of heat and optionally exerting a slight mechanical pressure.
  • the hair straightener 1 may generally have only a single heating plate 5, so that on the opposite arm 2, 3 only a plate, which is not heated, however, would be arranged.
  • the heating plate 5 has a base plate 7 which has a first surface 8 designed to make contact with the hair to be formed and a second surface 9 lying opposite this. With the second surface 9 in thermal contact is an electric heating element 10, as shown in FIGS. 2 to 5.
  • the base plate 7 now has at least one, preferably a plurality of recesses 11 on its second surface 9, which constitute a heat flow obstacle and subdivide the first surface 8 into at least two different temperature zones 12, 13 (see FIG. Looking at Fig. 2, it can be seen that two recesses 1 1 are provided in the manner of grooves which pass through the base plate 7 in the longitudinal direction and between which the heating element 10 is arranged.
  • the so-grooved base plate 7 thus has on her first surface 8, a temperature zone 12, which experiences a higher heating power, and two adjacent thereto second temperature zones 13, which experience a lower heating due to the heat flow obstacle generated by the recess 1 1.
  • the at least one recess 11 can in this case be in the form of a groove with an angular (cf., FIGS. 2, 4) or a round cross-section (see FIG.
  • the recesses 11 extend usually orthogonal to the direction of passage D of the hair to be formed.
  • the recess 1 1 there has a rounded cross-section and also the heating element 10 is disposed within the recess 1 1.
  • the heating element 10 has a discontinuous thickness, which in turn allows different temperature zones to be realized on the first surface 8.
  • the different thickness of the heating element 10 can also be used to obtain the most uniform temperature distribution at the first surface 8.
  • two further heating elements 14 and 15 are arranged in addition to the heating element 10, which can cause an individual, in particular supporting heating of the respectively associated temperature zones 13.
  • the other heating elements 14, 15 purely purely optional, that is switched on when needed.
  • the heat flow obstacle representing recess 1 which preferably completely passes through the base plate 7 of the heating plate 5 (see Fig. 5).
  • it may be provided an interrupted embodiment of the recess 1 1, as shown in the lower half of Fig. 5.
  • the base plate 7 of the heating plate 5 may for example be made of ceramic, glass, glass ceramic, temperature-resistant plastic, silicone or aluminum and in particular coated on the two surfaces 8, 9 as needed.
  • a lubricious coating is provided on the first surface 8.
  • a hair straightener 1 has always been described in the figures, it may of course alternatively also be a general heatable hair styling device, in particular a curling iron or a so-called multi styling device.

Landscapes

  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)

Abstract

The present invention relates to a heating plate (5) for a hair-styling iron (1), in particular for a straightener, - having a main plate (7) with a first surface (8), which is designed to come into contact with hair which is to be shaped, and a second surface (9), which is located opposite the first, - and having an electric heating element (10), which is in thermal contact with the second surface (9), - wherein the main plate (7), on the second surface (9), has at least one recess (11) which constitutes an obstruction to heat flow and thus subdivides the first surface (8) into at least two different temperature zones (12, 13). This makes it possible to achieve a markedly improved hair-styling result.

Description

Heizplatte für einen Haarglätter  Heating plate for a hair straightener
Die vorliegende Erfindung betrifft eine Heizplatte für einen Haarglätter, insbesondere für einen sogenannten Straightener. Die Erfindung betrifft außerdem einen Haarglätter mit zumindest einer solchen Heizplatte. The present invention relates to a hotplate for a hair straightener, in particular for a straightener. The invention also relates to a hair straightener with at least one such heating plate.
Beheizbare Haarformgeräte, insbesondere Haarglätter sind hinlänglich bekannt und dazu ausgebildet, unter Einwirkung von Wärme und gegebenenfalls zusätzlich durch mechanischen Druck/Zug die Haare in eine gewünschte Form zu bringen oder diesen ein gewünschtes Aussehen zu geben. Speziell bei Haarglättern werden durch Einbringen von Wärme und gleichzeitigem Ausüben einer mechanischen Kraft die zu behandelnden Haare geglättet. Derartige Haarglätter besitzen dabei zumindest eine üblicherweise elektrisch beheizbare Heizplatte, die über einen im Wesentlichen ebenen und flächigen Abschnitt mit den zu glättenden Haaren in Kontakt gebracht wird. Zusätzlich besitzen sie eine gegenüberliegende zweite, optional beheizbare Platte, zwischen der und der Heizplatte die zu glättenden Haare eingebracht und unter Druck durchgezogen werden, um geglättet werden zu können. Heatable hair styling devices, in particular hair straighteners are well known and adapted to bring under the action of heat and optionally additionally by mechanical pressure / train the hair in a desired shape or to give them a desired appearance. Especially with hair straighteners, by applying heat and simultaneously exerting a mechanical force, the hair to be treated is smoothed. Such hair straighteners in this case have at least one usually electrically heatable heating plate, which is brought into contact with the hair to be smoothed via a substantially flat and flat section. In addition, they have an opposite second, optionally heatable plate between which and the heating plate to be smoothed hair introduced and pulled through under pressure to be smoothed can.
Zur Erzielung besonders guter Glättergebnisse wurde dabei bisher angestrebt, eine möglichst gleichmäßige Temperaturverteilung über die gesamte Heizplatte sicherzustellen. Dies wurde beispielsweise mittels keramiklackierter Aluminiumplatten versucht, da Aluminium eine weitaus bessere Wärmeleitfähigkeit als beispielsweise Glas oder Keramik besitzt. Neuere Untersuchungen haben jedoch gezeigt, dass Heizplatten mit unterschiedlichen Temperaturzonen ein nochmals verbessertes Glättergebnis bewirken. Die vorliegende Erfindung beschäftigt sich daher mit dem Problem, eine Heizplatte für einen Haarglätter anzugeben, die einerseits konstruktiv einfach aufgebaut ist und andererseits zumindest zwei verschiedene Temperaturzonen aufweist, um dadurch ein verbessertes Glättergebnis erreichen zu können. Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche. Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, an einer Grundplatte einer Heizplatte für einen Haarglätter einseitig zumindest eine Ausnehmung vorzusehen, die ein Wärmeflusshindernis darstellt und die dadurch eine den zu glättenden Haaren zugewandte erste Oberfläche in zumindest zwei unterschiedliche Temperaturzonen unterteilt. Die erfindungsgemäße Heizplatte weist dabei eine einstückige Grundplatte auf, die eine zum Kontakt mit zu formendem Haar ausgebildete erste Oberfläche und eine dieser gegenüberliegende zweite Oberfläche aufweist. Mit der zweiten Oberfläche in thermischem Kontakt steht dabei zumindest ein elektrisches Heizelement, beispielsweise ein PTC-Element, wobei in der zweiten Oberfläche nun erfindungsgemäß die zuvor beschriebene zumindest eine Ausnehmung eingebracht ist, die das ebenfalls zuvor beschriebene Wärmeflusshindernis darstellt und dadurch die erste Oberfläche in zumindest zwei unterschiedliche Temperaturzonen unterteilt. Durch die zumindest zwei unterschiedlichen Temperaturzonen auf einer einzigen Heizplatte kann das Glättergebnis deutlich verbessert werden, ohne dafür beispielsweise zwei separate Heizplatten mit entsprechend aufwändiger Verkabelung und verbunden damit mit vergleichsweise schwieriger Reinigungsmöglichkeit bereitstellen zu müssen. In den zumindest zwei unterschiedlichen Temperaturzonen kann somit ein unterschiedliches Maß an Heizleistung bereitgestellt werden, wobei durch die geometrische Ausbildung der zumindest einen Ausnehmung, beispielsweise hinsichtlich ihrer Tiefe und/oder Breite eine Wärmeübertragung, die diese Ausnehmung überwindet, eingestellt werden kann. Je tiefer bzw. breiter diese Ausnehmung ist, umso größer ist das hierdurch erzeugte Wärmeflusshindernis. Die Grundplatte selbst kann beispielsweise aus Glas, Keramik, Glaskeramik, temperaturbeständigem Kunststoff, Silikon oder Aluminium als Grundmaterial ausgebildet sein, wodurch das Einbringen bzw. Vorsehen der erfindungsgemäßen Ausnehmung vergleichsweise einfach möglich ist. In dem Fall von Glas sind insbesondere Gläser bevorzugt, die für einen Einsatz als Heizplatte geeignet sind, wie beispielweise Quarzglas oder Borosilikatglas. In order to achieve particularly good smoothing results, it has been the aim to ensure the most uniform possible temperature distribution over the entire heating plate. This has been tried for example by means of ceramic painted aluminum plates, since aluminum has a much better thermal conductivity than, for example, glass or ceramic. Recent studies have shown, however, that heating plates with different temperature zones bring about a further improved smoothing result. The present invention therefore deals with the problem of providing a hotplate for a hair straightener, which is structurally simple on the one hand and on the other hand at least two different temperature zones, thereby achieving an improved smoothing result can. This problem is solved according to the invention by the subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims. The present invention is based on the general idea, on one side of a base plate of a hotplate for a hair straightener to provide at least one recess which constitutes a heat flow obstacle and which thereby subdivides a first surface facing the hair to be smoothed into at least two different temperature zones. The heating plate according to the invention in this case has a one-piece base plate, which has a trained for contact with hair to be formed first surface and a second surface opposite thereto. In this case, at least one electrical heating element, for example a PTC element, is in thermal contact with the second surface. In the second surface, the previously described at least one recess is introduced, which constitutes the heat flow obstacle described above and thereby the first surface in at least divided into two different temperature zones. Due to the at least two different temperature zones on a single hotplate, the smoothing result can be significantly improved without, for example, having to provide two separate hotplates with correspondingly complex wiring and thus connected with comparatively difficult cleaning option. Thus, a different degree of heating power can be provided in the at least two different temperature zones, wherein a heat transfer which overcomes this recess can be set by the geometric design of the at least one recess, for example with regard to its depth and / or width. The deeper or wider this recess is, the larger the heat flow obstacle produced thereby. The base itself may for example be made of glass, ceramic, glass ceramic, temperature-resistant plastic, silicone or aluminum as the base material, whereby the introduction or provision of the recess according to the invention is relatively easy. In the case of glass, in particular glasses are preferred which are suitable for use as a heating plate, such as quartz glass or borosilicate glass.
Zweckmäßig ist die zumindest eine Ausnehmung als Nut mit eckigem oder rundem Querschnitt ausgebildet und es sind zudem zwei derartige Nuten vorgesehen, die die zweite Oberfläche in Längsrichtung, das heißt orthogonal zur Durchzugsrichtung der zu formenden Haare, durchziehen. Die Länge der Ausnehmungen ist dabei vorzugsweise genauso lang wie die Heizplatte, das heißt die Ausnehmung durchläuft die Heizplatte vollständig. Selbstverständlich sind aber auch nicht vollständig durchlaufende Ausnehmungen denkbar, insbesondere in der Art von unterbrochenen Linien, ähnlich einem Mittelstreifen einer Fahrbahn, wodurch ebenfalls Einfluss auf die Wärmeübertragungsrate zwischen den beiden durch die Ausnehmung getrennten Temperaturzonen genommen werden kann. In dem zuvor beschriebenen Fall ist das wenigstens eine Heizelement vorzugsweise zwischen den beiden Nuten angeordnet, so dass dort eine Temperaturzone mit höherer Temperatur gegeben ist. Die beiden benachbarten Temperaturzonen weisen aufgrund des durch die jeweilige Ausnehmung/Nut erzeugten Wärmeflusshindernisses eine geringer Temperatur beim Betrieb des Haarglätters auf, so dass beim Durchziehen der zu formenden Haare zwischen zwei derartigen Heizplatten diese in der mittleren Temperaturzone eine deutlich stärkere Aufheizung erfahren als in den beiden randseitigen Temperaturzonen. Durch das gestufte Erwärmen und wieder Abkühlen während des Glättvorgangs kann ein besonders effektives Glätten der Haare erreicht werden. Bei einer weiteren vorteilhaften Ausführungsform der erfindungsgemäßen Lösung ist zumindest ein weiteres Heizelement vorgesehen. Selbstverständlich ist dabei denkbar, dass die erfindungsgemäße Heizplatte nicht nur von einem einzigen Heizelement beheizt werden muss, sondern beispielsweise in benachbarten und durch die Ausnehmung/Nut getrennten Temperaturzonen ein weiteres Heizelement vorgesehen sein kann, das optional, das heißt insbesondere je nach Bedarf zu- bzw. abgeschaltet werden kann. Hierbei ist insbesondere denkbar, dass bei einem schnellen Glätten der Haare, die von lediglich einem einzigen Heizelement aufgebrachte Heizleistung nicht ausreicht, so dass in diesem Fall das zumindest eine weitere Heizelement zusätzlich Heizenergie beisteuert und damit auch ein schnelles und trotzdem effektives Glätten der Haare ermöglicht. The at least one recess is expediently designed as a groove with an angular or round cross-section and, in addition, two such grooves are provided which run through the second surface in the longitudinal direction, that is orthogonal to the direction of passage of the hair to be formed. The length of the recesses is preferably the same length as the heating plate, that is, the recess passes through the heating plate Completely. Of course, not completely continuous recesses are conceivable, in particular in the manner of broken lines, similar to a median strip of a road, which can also influence the heat transfer rate between the two separated by the recess temperature zones can be taken. In the case described above, the at least one heating element is preferably arranged between the two grooves, so that there is a higher temperature temperature zone. The two adjacent temperature zones have due to the heat flow obstacle generated by the respective recess / groove a low temperature during operation of the hair straightener, so that when pulling the hair to be formed between two such heating plates they experience a much stronger heating in the middle temperature zone than in the two edge temperature zones. By gradual heating and cooling again during the smoothing process, a particularly effective smoothing of the hair can be achieved. In a further advantageous embodiment of the solution according to the invention, at least one further heating element is provided. Of course, it is conceivable that the heating plate according to the invention not only has to be heated by a single heating element, but for example in adjacent and separated by the recess / groove temperature zones another heating element can be provided, the optional, that is in particular as needed to or . can be switched off. In this case, it is conceivable, in particular, that in the case of rapid smoothing of the hair, the heating power applied by only a single heating element is insufficient, so that in this case the at least one further heating element additionally contributes heating energy and thus also allows a fast and nevertheless effective smoothing of the hair.
Zweckmäßig ist das Heizelement zumindest teilweise in der Ausnehmung angeordnet. Weist die Ausnehmung beispielsweise einen ausgerundeten Querschnitt auf, so ist denkbar, dass das zumindest eine Heizelement mit komplementär dazu ausgebildetem Querschnitt innerhalb dieser Ausnehmung angeordnet ist und dadurch ebenfalls unterschiedliche Temperaturzonen auf der dem zu formenden Haar zugewandten ersten Oberfläche der Heizplatte ermöglicht. Rein theoretisch sind dabei auch Heizelemente denkbar, die eine diskontinuierliche Dicke aufweisen, so dass deren in die Grundplatte eingebrachte Heizleistung abhängig von der jeweiligen Dicke ist und dadurch ebenfalls ein in unterschiedliche Temperaturzonen unterteiltes Beheizen der Grundplatte ermöglicht wird. Suitably, the heating element is at least partially disposed in the recess. If the recess has, for example, a rounded cross-section, then it is conceivable that the at least one heating element with a cross-section configured to be complementary thereto is arranged inside this recess and thereby also permits different temperature zones on the first surface of the heating plate facing the hair to be formed. In theory, heating elements are also conceivable which have a discontinuous thickness, so that their heating power introduced into the base plate is dependent on the respective thickness and thus likewise a subdivided into different temperature zones heating the base plate is made possible.
Eine Steuerung der einzelnen Temperaturzonen kann über entsprechende Temperatursensoren, die mit einer Steuerungseinrichtung verbunden sind, erfolgen. Selbstverständlich ist dabei auch klar, dass die zumindest eine Ausnehmung keine lineare Gestalt aufweisen muss, sondern beispielsweise auch mäanderförmig oder andersartig verlaufend gestaltet sein kann. Die Heizelemente bzw. das zumindest eine Heizelement kann beispielsweise in der Art einer Beschichtung auf die zweite Oberfläche der Grundplatte der Heizplatte aufgebracht werden. A control of the individual temperature zones can take place via corresponding temperature sensors, which are connected to a control device. Of course, it is also clear that the at least one recess does not have to have a linear shape, but for example can also be designed to meandering or otherwise running. The heating elements or the at least one heating element can be applied for example in the manner of a coating on the second surface of the base plate of the heating plate.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen. Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind ohne den Rahmen der vorliegenden Erfindung zu verlassen. Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen. Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings. It is understood that the features mentioned above and those yet to be explained below can be used not only in the respectively specified combination but also in other combinations or in isolation without departing from the scope of the present invention. Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.
Dabei zeigen, jeweils schematisch, Show, in each case schematically,
Fig. 1 einen erfindungsgemäßen Haarglätter zumindest einer erfindungsgemäßen Fig. 1 a hair straightener according to the invention at least one inventive
Heizplatte,  heating plate,
Fig. 2 eine Schnittdarstellung durch eine erste mögliche Ausführungsform der erfindungsgemäßen Heizplatte, 2 is a sectional view through a first possible embodiment of the heating plate according to the invention,
Fig. 3 eine Darstellung wie in Fig. 1 , jedoch bei teilweise in der Ausnehmung angeordnetem Heizelement, Fig. 4 eine Darstellung wie in Fig. 2, jedoch mit zwei weiteren Heizelementen, 3 is a view as in FIG. 1, but with partially arranged in the recess heating element, 4 is a representation as in Fig. 2, but with two further heating elements,
Fig. 5 eine Ansicht auf eine zweite Oberfläche der erfindungsgemäßen Heizplatte mit entsprechend angeordneten Ausnehmungen. Fig. 5 is a view of a second surface of the heating plate according to the invention with correspondingly arranged recesses.
Entsprechend der Fig. 1 , weist ein erfindungsgemäßer Haarglätter 1 einen zangenartigen Aufbau mit einem ersten Arm 2 und einem zweiten Arm 3 auf, die über ein Gelenk 4 miteinander verbunden sind. Der erste Arm 2 und der zweite Arm 3 sind dabei derart über das Gelenk 4 miteinander verbunden, dass ein freies Ende des ersten Arms 2 und ein freies Ende des zweiten Arms 3 aufeinander zu und voneinander weg bewegbar sind, wie dies gemäß der Fig. 1 schematisch durch einen Pfeil dargestellt ist. Am ersten Arm 2 wie am zweiten Arm 3 ist jeweils eine Heizplatte 5 vorgesehen, die im Folgenden näher beschrieben wird. Über eine elektrische Anschlussleitung 6 kann der Haarglätter 1 mit einem elektrischen Netz verbunden werden. Die zu glättenden Haare können zwischen die beiden Heizplatten 5 gebracht werden, wobei dann die beiden Heizplatten 5 zum Einschluss der Haare zwischen diesen aufeinander zu bewegt werden und die Haare durch Wärmeeinwirkung und gegebenenfalls Ausübung eines leichten mechanischen Drucks geglättet werden. Dabei ist selbstverständlich klar, dass der Haarglätter 1 generell auch lediglich eine einzige Heizplatte 5 aufweisen kann, so dass an dem gegenüberliegenden Arm 2, 3 lediglich eine Platte, die jedoch nicht beheizbar ist, angeordnet wäre. 1, an inventive hair straightener 1 has a forceps-like construction with a first arm 2 and a second arm 3, which are connected to one another via a joint 4. The first arm 2 and the second arm 3 are connected to each other via the hinge 4 such that a free end of the first arm 2 and a free end of the second arm 3 are movable towards and away from each other, as shown in FIG is shown schematically by an arrow. On the first arm 2 as on the second arm 3 each have a heating plate 5 is provided, which will be described in more detail below. Via an electrical connection line 6, the hair straightener 1 can be connected to an electrical network. The hair to be smoothed can be brought between the two heating plates 5, in which case the two heating plates 5 are moved towards the hair between them and the hair is smoothed by the action of heat and optionally exerting a slight mechanical pressure. It is of course clear that the hair straightener 1 may generally have only a single heating plate 5, so that on the opposite arm 2, 3 only a plate, which is not heated, however, would be arranged.
Die erfindungsgemäße Heizplatte 5 besitzt eine Grundplatte 7, die eine zum Kontakt mit dem zu formenden Haar ausgebildete erste Oberfläche 8 und eine dieser gegenüberliegende zweite Oberfläche 9 aufweist. Mit der zweiten Oberfläche 9 in thermischem Kontakt steht dabei ein elektrisches Heizelement 10, wie dies gemäß den Fig. 2 bis 5 dargestellt ist. Erfindungsgemäß weist nun die Grundplatte 7 an ihrer zweiten Oberfläche 9 zumindest eine, vorzugsweise mehrere Ausnehmungen 1 1 auf, die ein Wärmeflusshindernis darstellen und die erste Oberfläche 8 dadurch in zumindest zwei unterschiedliche Temperaturzonen 12, 13 (vgl. Fig. 2) unterteilen. Betrachtet man die Fig. 2, so kann man erkennen, dass zwei Ausnehmungen 1 1 in der Art von Nuten vorgesehen sind, die die Grundplatte 7 in Längsrichtung durchlaufen und zwischen denen das Heizelement 10 angeordnet ist. Die derart gefurchte Grundplatte 7 besitzt somit an ihrer ersten Oberfläche 8 eine Temperaturzone 12, die eine höhere Heizleistung erfährt, sowie zwei benachbart dazu gelegene zweite Temperaturzonen 13, die aufgrund des durch die Ausnehmung 1 1 erzeugen Wärmeflusshindernisses eine geringere Aufheizung erfahren. The heating plate 5 according to the invention has a base plate 7 which has a first surface 8 designed to make contact with the hair to be formed and a second surface 9 lying opposite this. With the second surface 9 in thermal contact is an electric heating element 10, as shown in FIGS. 2 to 5. According to the invention, the base plate 7 now has at least one, preferably a plurality of recesses 11 on its second surface 9, which constitute a heat flow obstacle and subdivide the first surface 8 into at least two different temperature zones 12, 13 (see FIG. Looking at Fig. 2, it can be seen that two recesses 1 1 are provided in the manner of grooves which pass through the base plate 7 in the longitudinal direction and between which the heating element 10 is arranged. The so-grooved base plate 7 thus has on her first surface 8, a temperature zone 12, which experiences a higher heating power, and two adjacent thereto second temperature zones 13, which experience a lower heating due to the heat flow obstacle generated by the recess 1 1.
Die zumindest eine Ausnehmung 1 1 kann dabei als Nut mit eckigem (vgl. Fig. 2, 4) oder rundem Querschnitt (vgl. Fig. 3) ausgebildet sein. Die Ausnehmungen 1 1 verlaufen dabei üblicherweise orthogonal zur Durchzugsrichtung D der zu formenden Haare. The at least one recess 11 can in this case be in the form of a groove with an angular (cf., FIGS. 2, 4) or a round cross-section (see FIG. The recesses 11 extend usually orthogonal to the direction of passage D of the hair to be formed.
Betrachtet man die Ausführungsform der Heizplatte 5 gemäß der Fig. 3, so kann man erkennen, dass die Ausnehmung 1 1 dort einen ausgerundeten Querschnitt aufweist und zudem das Heizelement 10 innerhalb der Ausnehmung 1 1 angeordnet ist. Zudem weist das Heizelement 10 eine diskontinuierliche Dicke auf, wodurch wiederum unterschiedliche Temperaturzonen an der ersten Oberfläche 8 realisierbar sind. Selbstverständlich kann die unterschiedliche Dicke des Heizelementes 10 auch dazu genutzt werden, eine möglichst gleichmäßige Temperaturverteilung an der ersten Oberfläche 8 zu erhalten. Bei der Heizplatte 5 gemäß der Fig. 4 sind neben dem Heizelement 10 zwei weitere Heizelemente 14 und 15 angeordnet, die eine individuelle, insbesondere unterstützende Beheizung der jeweils zugehörigen Temperaturzonen 13 bewirken können. Selbstverständlich können dabei die weiteren Heizelemente 14, 15 lediglich rein optional, das heißt bei Bedarf zugeschaltet werden. Looking at the embodiment of the heating plate 5 according to FIG. 3, it can be seen that the recess 1 1 there has a rounded cross-section and also the heating element 10 is disposed within the recess 1 1. In addition, the heating element 10 has a discontinuous thickness, which in turn allows different temperature zones to be realized on the first surface 8. Of course, the different thickness of the heating element 10 can also be used to obtain the most uniform temperature distribution at the first surface 8. In the heating plate 5 according to FIG. 4, two further heating elements 14 and 15 are arranged in addition to the heating element 10, which can cause an individual, in particular supporting heating of the respectively associated temperature zones 13. Of course, while the other heating elements 14, 15 purely purely optional, that is switched on when needed.
Zwischen dem Heizelement 10 und dem jeweils weiteren Heizelement 14, 15 verläuft dabei die das Wärmeflusshindernis darstellende Ausnehmung 1 1 , welche die Grundplatte 7 der Heizplatte 5 vorzugsweise vollkommen durchläuft (vgl. Fig. 5). Alternativ hierzu vorgesehen sein kann auch eine unterbrochene Ausführung der Ausnehmung 1 1 , wie dies in der unteren Hälfte der Fig. 5 dargestellt ist. Between the heating element 10 and the respective further heating element 14, 15 runs the heat flow obstacle representing recess 1 1, which preferably completely passes through the base plate 7 of the heating plate 5 (see Fig. 5). Alternatively, it may be provided an interrupted embodiment of the recess 1 1, as shown in the lower half of Fig. 5.
Die Grundplatte 7 der Heizplatte 5 kann beispielsweise aus Keramik, Glas, Glaskeramik, temperaturbeständigem Kunststoff, Silikon oder Aluminium ausgebildet sein und insbesondere an den beiden Oberflächen 8, 9 bedarfsgerecht beschichtet werden. Beispielsweise ist denkbar, dass an der ersten Oberfläche 8 das Aufbringen einer Gleitbeschichtung vorgesehen wird. Mit der erfindungsgemäßen Heizplatte 5 und einem damit ausgestatteten Haarglätter 1 lässt sich ein deutlich verbessertes Glättergebnis erzielen, als mit gleichmäßig beheizten Heizplatten, insbesondere aufgrund der unterschiedlichen Temperaturzonen 12, 13. Die Anzahl und geometrische Form der einzelnen Ausnehmungen 1 1 der Fig. 2 bis 5 soll dabei lediglich rein exemplarisch verstanden werden, so dass auch eine höhere Anzahl oder beispielsweise ein mäanderförmiger Verlauf der Ausnehmungen 1 1 von der Erfindung mit umfasst sein sollen. The base plate 7 of the heating plate 5 may for example be made of ceramic, glass, glass ceramic, temperature-resistant plastic, silicone or aluminum and in particular coated on the two surfaces 8, 9 as needed. For example, it is conceivable that the application of a lubricious coating is provided on the first surface 8. With the heating plate 5 according to the invention and a hair straightener 1 equipped therewith, a significantly improved smoothing result can be achieved, as with uniformly heated heating plates, in particular due to the different temperature zones 12, 13. The number and geometric shape of the individual recesses 11 of FIGS. 2 to 5 It should be understood purely by way of example, so that a higher number or, for example, a meandering course of the recesses 1 1 should be included in the invention.
Obwohl in den Figuren stets ein Haarglätter 1 beschrieben wurde, kann es sich selbstverständlich alternativ auch um ein allgemeines beheizbares Haarformgerät, insbesondere einen Lockenstab oder ein sogenanntes Multistylinggerät handeln. Although a hair straightener 1 has always been described in the figures, it may of course alternatively also be a general heatable hair styling device, in particular a curling iron or a so-called multi styling device.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
1 Haarglätter 1 straightener
2 erster Arm  2 first arm
3 zweiter Arm  3 second arm
4 Gelenk  4 joint
5 Heizplatte  5 heating plate
6 Anschlussleitung  6 connecting cable
7 Grundplatte  7 base plate
8 erste Oberfläche  8 first surface
9 zweite Oberfläche  9 second surface
10 Heizelement  10 heating element
1 1 Ausnehmung  1 1 recess
12 erste Temperaturzone  12 first temperature zone
13 zweite Temperaturzone  13 second temperature zone
14 weiteres Heizelement  14 additional heating element
15 weiteres Heizelement  15 additional heating element

Claims

Patentansprüche claims
1. Heizplatte (5) für einen Haarglätter (1 ), insbesondere für einen Straightener, 1. heating plate (5) for a hair straightener (1), in particular for a Straightener,
- mit einer Grundplatte (7), die eine zum Kontakt mit zu formendem Haar ausgebildete erste Oberfläche (8) und eine dieser gegenüberliegende zweite Oberfläche (9) aufweist,  a base plate (7) having a first surface (8) formed to contact hair to be formed and a second surface (9) opposite thereto,
- mit einem in thermischem Kontakt mit der zweiten Oberfläche (9) stehenden elektrischen Heizelement (10),  with an electrical heating element (10) in thermal contact with the second surface (9),
- wobei die Grundplatte (7) an der zweiten Oberfläche (9) zumindest eine Ausnehmung (1 1 ) aufweist, die ein Wärmeflusshindernis darstellt und die erste Oberfläche (8) dadurch in zumindest zwei unterschiedliche Temperaturzonen (12, 13) unterteilt.  - wherein the base plate (7) on the second surface (9) has at least one recess (1 1), which constitutes a heat flow obstacle and the first surface (8) thereby divided into at least two different temperature zones (12, 13).
2. Heizplatte nach Anspruch 1 , 2. Heating plate according to claim 1,
dadurch gekennzeichnet,  characterized,
dass die zumindest eine Ausnehmung (1 1 ) als Nut mit eckigem oder rundem Querschnitt ausgebildet ist.  in that the at least one recess (11) is designed as a groove with an angular or round cross-section.
3. Heizplatte nach Anspruch 2, 3. Heating plate according to claim 2,
dadurch gekennzeichnet,  characterized,
dass zwei Nuten vorgesehen sind, die die zweite Oberfläche (9) in Längsrichtung, das heißt orthogonal zur Durchzugsrichtung (D) der zu formenden Haare, durchziehen.  in that two grooves are provided which run through the second surface (9) in the longitudinal direction, that is orthogonal to the direction of passage (D) of the hair to be formed.
4. Heizplatte nach Anspruch 3, 4. Heating plate according to claim 3,
dadurch gekennzeichnet,  characterized,
dass das Heizelement (10) zwischen den beiden Nuten/Ausnehmungen (1 1 ) angeordnet ist.  that the heating element (10) between the two grooves / recesses (1 1) is arranged.
5. Heizplatte nach Anspruch 3 oder 4, 5. Heating plate according to claim 3 or 4,
dadurch gekennzeichnet, dass  characterized in that
dass zumindest ein weiteres Heizelement (14, 15) vorgesehen ist. Heizplatte nach Anspruch 5, in that at least one further heating element (14, 15) is provided. Heating plate according to claim 5,
dadurch gekennzeichnet, characterized,
dass zwischen zwei Heizelementen (10,14, 15) eine Ausnehmung (1 1 ) angeordnet ist. that between two heating elements (10,14, 15) has a recess (1 1) is arranged.
Heizplatte nach Anspruch 1 oder 2, Heating plate according to claim 1 or 2,
dadurch gekennzeichnet, characterized,
dass das Heizelement (10) zumindest teilweise in der Ausnehmung (1 1 ) angeordnet ist. the heating element (10) is arranged at least partially in the recess (11).
Heizplatte nach Anspruch 7, Heating plate according to claim 7,
dadurch gekennzeichnet, characterized,
dass das Heizelement (10, 14, 15) eine diskontinuierliche Dicke aufweist. the heating element (10, 14, 15) has a discontinuous thickness.
Heizplatte nach einem der vorhergehenden Ansprüche, Heating plate according to one of the preceding claims,
dadurch gekennzeichnet, characterized,
dass die Grundplatte (7) aus Glas, Keramik, Glaskeramik, temperaturbeständigem Kunststoff, Aluminium oder Silikon als Grundmaterial ausgebildet ist. the base plate (7) is made of glass, ceramic, glass ceramic, temperature-resistant plastic, aluminum or silicone as the base material.
Haarglätter (1 ) mit zumindest einer Heizplatte (5) nach einem der vorhergehenden Ansprüche. Hair straightener (1) with at least one heating plate (5) according to one of the preceding claims.
EP13774653.3A 2012-10-11 2013-10-09 Heating plate for a hair-styling iron Active EP2906075B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201210218499 DE102012218499A1 (en) 2012-10-11 2012-10-11 Heating plate for a hair straightener
PCT/EP2013/070998 WO2014056957A1 (en) 2012-10-11 2013-10-09 Heating plate for a hair-styling iron

Publications (2)

Publication Number Publication Date
EP2906075A1 true EP2906075A1 (en) 2015-08-19
EP2906075B1 EP2906075B1 (en) 2017-03-01

Family

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Application Number Title Priority Date Filing Date
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Country Status (3)

Country Link
EP (1) EP2906075B1 (en)
DE (1) DE102012218499A1 (en)
WO (1) WO2014056957A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2545233B (en) 2015-12-09 2018-06-27 Dyson Technology Ltd Flexible heating plate for hair
GB2590397A (en) 2019-12-16 2021-06-30 Dyson Technology Ltd Hair styling appliance and heating unit
GB2590396B (en) 2019-12-16 2023-02-01 Dyson Technology Ltd Hair styling appliance and heating unit
GB2627234A (en) * 2023-02-16 2024-08-21 Dyson Technology Ltd Heater plate

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Publication number Priority date Publication date Assignee Title
US8230868B2 (en) * 2005-03-02 2012-07-31 Choi Young-Bum Hair iron having buffer member
KR100858147B1 (en) * 2007-07-30 2008-09-10 유숙자 Dual type hair ironing instrument
GB2477834B (en) * 2010-08-31 2012-02-01 Jemella Ltd Hair styling appliance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014056957A1 *

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DE102012218499A1 (en) 2014-04-17
EP2906075B1 (en) 2017-03-01

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