EP1779745B1 - Haartrockner mit einer Vorrichtung zum Ändern der Geometrie des Luftstromes - Google Patents

Haartrockner mit einer Vorrichtung zum Ändern der Geometrie des Luftstromes Download PDF

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Publication number
EP1779745B1
EP1779745B1 EP06356122A EP06356122A EP1779745B1 EP 1779745 B1 EP1779745 B1 EP 1779745B1 EP 06356122 A EP06356122 A EP 06356122A EP 06356122 A EP06356122 A EP 06356122A EP 1779745 B1 EP1779745 B1 EP 1779745B1
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EP
European Patent Office
Prior art keywords
hair dryer
air
dryer according
air flow
flaps
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Active
Application number
EP06356122A
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English (en)
French (fr)
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EP1779745A1 (de
Inventor
Christophe Perez
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SEB SA
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SEB SA
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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
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • A45D20/122—Diffusers, e.g. for variable air flow
    • A45D20/124—Diffusers, e.g. for variable air flow comprising rotating elements

Definitions

  • the present invention relates to an apparatus for drying and / or shaping the hair, more particularly a hair dryer providing an air jet of modifiable shape.
  • Hair dryers for private or professional use generally comprise a housing provided with a handle and equipped with air circulation means between an inlet grille in the housing and an outlet port of the latter, and means heating the air blown.
  • the air circulation means comprise a fan driven by an electric motor and the heating means comprise an electrical resistance arranged in the air flow.
  • some hair dryers use one or more removable accessories, mounted at the air outlet end of the device and allowing to have the same number of forms of airflow.
  • This has the disadvantage of having to change several accessories during use of the device, which becomes troublesome when manipulating accessories arranged near the heating means.
  • Another disadvantage is to multiply the number of accessories, which poses a problem of size and storage of the device with its utensils, while having a limited number of shapes and intensities of the air flow .
  • Hair dryers are also known, described in particular in the documents US 4,232,454 , US 4,977,306 or FR 2,530,132 each using a pair of pivoting flaps arranged in the airflow outlet duct of the housing of the apparatus. These flaps can be operated simultaneously by an adjustment knob placed on the outer part of the duct of the appliance so as to restrict more or less the section of the outlet duct of the airflow. It is thus possible to go from a diffuse flow output section to a more concentrated flow output section.
  • the operation of the shutters remains uncomfortable, the actuating button being difficult to handle both because of its size and also by its more or less discreet location on the housing.
  • the flaps are arranged behind a protective grid so that the position of one relative to the other (flaps close or apart) is difficult to see from the outside, which has the consequence of making it difficult orientation of the hair dryer relative to the lock of hair treated.
  • each longitudinal groove engages the lug of a flap, the axial movement of the nozzle body causing the flaps to pivot.
  • the device according to this document has the disadvantage of having many components of complex shapes and small dimensions that are fragile in operation, while remaining an expensive implementation.
  • a device for adjusting the outlet section of the air flow blown by a hairdryer having a plurality of superimposed circular segments rotated by a rotating outer ring about an axis parallel to the air flow.
  • Such a device with superimposed segments is subject to repeated blockages during its use, in particular by the interposition of the hair sandwiched between the segments of the device during the passage from one position, open or closed, to another.
  • the object of the present invention is to overcome the aforementioned drawbacks and to provide a hairdryer provided with a device for continuously varying the outlet section of the air flow blown by the device, easily maneuverable to gradually move from a multidirectional expanded flux to a monodirectional concentrated flow and vice versa, while using a reliable, compact, robust and simplified construction device.
  • Another object of the invention is a hairdryer provided with a device for varying the geometry of the air flow blown by the device, while allowing to visualize the shape of the section thus modified.
  • Another object of the invention is a hair dryer provided with a device for varying the geometry of the air flow which is efficient, reliable in operation and easy to industrialize for a lower manufacturing cost.
  • a hair dryer having means for heating and circulating an air flow between an inlet end in a housing and an outlet end, as well as a device for modifying the geometry of the air jet emitted at the outlet end having a rotary control part for driving in movement at least one pivoting flap of said device, characterized in that said flap is directly actuated by pivoting about an axis perpendicular or inclined relative to the air flow by said part during its rotary movement about the longitudinal axis of the air flow.
  • the device for modifying the geometry of the air flow comprises at least one pivoting flap adapted to move between a first extreme position where it allows the air flow exiting the apparatus to pass through practically the entire section of the air. outlet end of a hair dryer and a second extreme position where it at least partially closes this output section of the air flow.
  • such a variation in the shape of the air flow is obtained by rotating a rotary control part of the device around the longitudinal axis of the air flow, which part is therefore intended to drive directly, without interposed parts, the pivoting flap.
  • the flap can be directly rotated and pivots by cooperating with an adjacent actuating means, for example a cam, the turn of a screw, or any other complementary piece capable of directly transforming the rotational movement around the blade.
  • control part in a pivoting movement about an axis perpendicular or inclined with respect to the airflow flaps; or else, the control part comprising a cam or the turn of a screw, etc., when it is caused to rotate about the axis of the air flow, directly pivots the shutter with the end of which it comes in contact.
  • the rotary control part is a magnetic ring (having at least one magnetic sector interposed between two others of a non-magnetic material) which cooperates, during its rotation about the axis of the air flow , with one end of the flap (which is, for example, a ferromagnetic material) it attracts so that the flap can rotate; a spring that can also be provided to return the flap to its initial position when the magnetic attraction has ceased.
  • a rotary control part has a diameter at least equal to that of the outlet end of the device to ensure its good maneuverability by the user.
  • the shutter is then brought, under the action of the control part, to pivot along an axis perpendicular or inclined relative to the air flow (it is understood with respect to the cylinder which constitutes the air flow whose longitudinal axis is in the extension of the housing axis).
  • the intensity and the speed of the air flow are varied in order to adapt it to the desired shaping operation, continuously or intermittently, and this with a simplified construction device, comprising a control part with direct action on the flap and, in addition, easily manipulated, the person using it can then, with one hand, hold the device directed to the hair and, with the other hand, vary the intensity of the airflow, without effort and without having to look at the device closely.
  • said pivoting flap comprises a lug cooperating with a cam.
  • This mechanism makes it possible to transform, directly and with simplified construction parts (such as a lug cooperating with the bosses of a cam) the rotational movement of the control part of the device for varying the geometry of the air flow into a pivoting movement of the shutter.
  • said lug cooperates with a cam path arranged in a plane perpendicular to the axis of the air flow.
  • Such an lug could comprise, in a variant, a fork-shaped end (preferably V) which follows a rib forming a cam path or, in another variant, a slightly curved end which follows a groove forming cam path.
  • This second variant is preferred because such a cam path ensures a very good guidance between its flanks of the lug of the flap during the rotational actuation of the control part.
  • Such a guide path arranged in a plane perpendicular to the airflow directly transforms the rotational movement of the lug relative to the cam path (or that of the cam relative to the lug) in a pivoting of the flap for a lower mechanical stress of the lug and its connecting portion with the flap.
  • the hair dryer has a gate at its output end gate which carries said cam path.
  • the hair dryer rack serves two functions: a first protection vis-à-vis the electrical parts located inside the device and a second control part of the pivoting flaps, because it materializes the path also cam. This reduces the number of parts of the device equipped with a device for varying the geometry of the air flow and thus simplify the construction.
  • said cam path has a closed contour and is disposed at the periphery of the grid.
  • the cam path is located at the periphery of the grid, being made symmetrically around the center of the grid and therefore that of the air outlet section of the device.
  • Such a closed contour cam path located in the outlet section of the air flow advantageously allows a rotation in the two directions of rotation, hourly or trigonometric, while making the part carrying it, in this case the exit grid , easily achievable and more robust.
  • said cam path is delimited between two adjacent ribs of said grid.
  • said cam path has an oval shape.
  • control device comprises a tubular body arranged at the air outlet end of the housing and pivotally supporting said flap.
  • the tubular body of the variation device of the geometry of the air flow is thus provided to be connected to the blower end of the apparatus and form the nozzle body or diffuser of the hair dryer, the flap can then pivot to the interior of this tubular body of the device to modify the shape of its outlet section.
  • This device body can be permanently or removably connected to the outlet end of the hair dryer housing.
  • a device permanently fixed to the housing of the hair dryer is preferred, thereby obtaining a compact hair dryer that can be used as a diffuser or an air concentrator, without the need for accessories.
  • said tubular body forms the control part of said device.
  • said device comprises at least two pivoting flaps arranged symmetrically with respect to the plane containing the axis of the air flow.
  • said tubular body comprises, on either side of its median plane, two internal walls delimiting a central nozzle.
  • Such a central nozzle allows, in cooperation with the two pivoting flaps arranged on either side of the nozzle, to better channel the concentrated air flow towards the center of the device, while allowing the flaps to be recessed by relative to the front end of the nozzle, the latter touching, preferably, the front end of the body of the device.
  • the lateral flanks of said inner walls have openings closed by said flaps.
  • the hair dryer made according to the invention comprises a housing 1 inside which are arranged a fan rotated by an electric motor ensuring the flow of air between an air inlet 2 located at the rear of the housing 1 and an air outlet 3 located at the opposite end, means for heating the flow of air flowing inside the apparatus as well as connections to a power supply (not shown in the drawings) .
  • Switching on and off the appliance or choosing its operating mode is done by actuating switches 4, 5 located on a handle 6 connected to the housing 1 of the appliance.
  • the hairdryer also comprises a device 7 for varying the geometry of the air flow blown by the device, this device being fixed to the air outlet end 3.
  • the device 7 can be permanently fixed to the end 3 of the housing 1 or it can also be removably mounted relative to the housing 1, for example by a bayonet attachment, by a forced assembly, by an assembly comprising elastic hooks cooperating with slots facing each other , etc.
  • the device 7 comprises a tubular body 9, of conical outer shape, whose rear end 10 is intended to be attached to the blower end 3 of the hair dryer, the air flow blowing towards the hair by the front end 11, flared, of the body 9.
  • the body 9 can take any other form, for example cylindrical, spherical, flower-shaped, etc.
  • a grid 12 of circular outer contour is adjacent to the rear end 10 of the body 9 and is also attached to the air outlet end 3 of the housing 1.
  • the grid 12 forms a protective element separating the electrical parts of the housing. device of the blower end 3 or the device 7.
  • the grid 12 is fixedly mounted, slightly set back relative to the air outlet 3, while the body 9 of the device is mounted immediately adjacent to the gate, towards the outside of the housing 1, and it is fixedly mounted, but free to rotate about the longitudinal axis of the latter.
  • the body 9 of the device 7 comprises two internal walls 14,15 located on either side of the median plane containing the longitudinal axis of the air flow, which axis coincides with the longitudinal axis of the housing 1.
  • the internal walls 14 15 are inclined, from their respective bases 16, 17 set back inside the body 9, towards the front end 11 of the body 9 where their peripheral edges unite to form an oval central nozzle 20 .
  • An opening 18 is made in the upper wall 14 and a similar opening 19 is made in the lower wall of the body 9 of the device 7.
  • each flap 23,24 comprises two cylindrical hinges 25 ', respectively 26' which pivot about the cylindrical studs 25 ", respectively 26 ", formed with the body 9 of the device 7.
  • the axis of the cylindrical joints 25 ' forms a pivot axis 25 and the axis of the joints 26' forms a pivot axis 26, the two pivot axes 25, 26 are parallel to each other and are perpendicular to the flow of air blown by the apparatus.
  • the flaps 23, 24 each have a shape and dimensions that correspond to those of the openings 18, 19 internal walls 14,15 of the body 9 of the device.
  • each flap 23, 24 comprises at its inner end a lug 28, respectively 29, which is slid into a guide path 30 when a control part 8 is rotated around the longitudinal axis of the housing 1.
  • the control part 8 corresponds to the body 9 of the device 7.
  • the cam path 30 is defined between two intermediate ribs 31 and 32 of the grid 12 As best seen in the Figure 2c , the grid 12 has a circular peripheral edge 34, a central circular rib 35 concentric to the edge 34 and six braces 36 connecting them.
  • the intermediate ribs 31, 32 are located near the peripheral edge 34 and each have an oval contour, the two contours defining a constant spacing or cam path 30.
  • the flaps 23, 24 are represented in their open position to Figures 2a, 2b and 2c , the lugs 28, 29 being in the central part of the cam path 30. In this position, the flow of air blown by the apparatus is guided by the body 9 of the device, in particular its peripheral internal walls, as well as by the walls of the flaps 23, 24 and the outflow of the device is a diffuse air flow with several directions.
  • FIGS 3a to 3d illustrate the device 7 for varying the geometry of the air flow with the flaps 23, 24 in the closed position.
  • the passage in this position was obtained by rotating a quarter turn of the body 9 of the device 7 around the longitudinal axis of the housing 1.
  • the pins are moved 28, 29 shutters 23,24 along the cam path 30 defined by the gate 12.
  • the flaps 23, 24 are pivoted progressively towards the nozzle 20 to their corresponding extreme position of closure, as best visible at the figure 3d , at the positioning of the pins 28,29 at the top (or in the most extreme part) of the cam path 30.
  • the air blown by the device leaves only through the central part via the nozzle 20.
  • the flow obtained air is a flow of concentrated air, axial direction.
  • the flaps 23, 24 are folded so as to completely close the openings 18,19 of the inner walls 14,15 of the device.
  • the value of the free exit surface of the air flow is equal to that of the section of the nozzle 20, the flow of blown air having increased in intensity and speed.
  • the user turns on the hair dryer by operating one of the buttons 4,5 and directs it to the hair.
  • it then adjusts the intensity of the air flow (diffuse or concentrated) by rotating the body 9 of the device 7 along its longitudinal axis.
  • the rotation of this body in one direction causes the closure of the flaps, the rotation in the opposite direction their opening, the user can easily and progressively move from one extreme position to another.
  • the device 7 may not have a central nozzle, the opening in the center being then defined only by the folded position of the flaps.
  • control of opening and closing flaps could be carried out by an additional piece, for example a rotating ring which would then rotate the flaps or the cam path around the longitudinal axis of the housing.
  • the flap has a V-shaped end or fork-shaped which follows a single rib, for example of oval shape, forming the cam path belonging to the grid.

Landscapes

  • Cleaning And Drying Hair (AREA)
  • Duct Arrangements (AREA)

Claims (12)

  1. Haartrockner mit Mitteln, um einen Luftstrom zu erwärmen und diesen zwischen einem Einlassende (2) in ein Gehäuse (1) und einem Auslassende (3) zirkulieren zu lassen, und mit einer Vorrichtung (7), die es ermöglicht, die Geometrie des am Auslassende (3) ausgegebenen Luftstrahls zu ändern, und die ein drehbares Steuerungsteil (8) aufweist, um eine Bewegung mindestens einer Schwenkklappe (23, 24) der Vorrichtung zu bewirken, dadurch gekennzeichnet, dass die Klappe (23, 24) von dem Teil (8) bei seiner Drehbewegung um die Längsachse des Luftstroms direkt in eine Schwenkbewegung um eine Achse betätigt wird, welche bezüglich des Luftstroms senkrecht oder geneigt ist.
  2. Haartrockner nach Anspruch 1, dadurch gekennzeichnet, dass die Schwenkklappe (23, 24) eine Nase (28, 29) aufweist, die mit einer Kurvenfläche zusammenwirkt.
  3. Haartrockner nach Anspruch 2, dadurch gekennzeichnet, dass die Nase (28, 29) mit einer Kurvenflächenbahn (30) zusammenwirkt, die in einer zur Achse des Luftstroms senkrechten Ebene ausgebildet ist.
  4. Haartrockner nach Anspruch 3, dadurch gekennzeichnet, dass der Haartrockner an seinem Auslassende (3) ein Gitter (12) aufweist, das die Kurvenflächenbahn (30) trägt.
  5. Haartrockner nach Anspruch 4, dadurch gekennzeichnet, dass die Kurvenflächenbahn (30) eine geschlossene Kontur aufweist und am Umfang des Gitters (12) angeordnet ist.
  6. Haartrockner nach Anspruch 4 oder 5, dadurch gekennzeichnet, dass die Kurvenflächenbahn (30) zwischen zwei angrenzenden Rippen (31, 32) des Gitters (12) begrenzt ist.
  7. Haartrockner nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass die Kurvenflächenbahn (30) eine ovale Form hat.
  8. Haartrockner nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung (7) einen rohrförmigen Körper (9) aufweist, der am Luftauslassende des Gehäuses (1) angeordnet ist und die Schwenkbewegung der Klappe (23, 24) unterstützt.
  9. Haartrockner nach Anspruch 8, dadurch gekennzeichnet, dass der rohrförmige Körper (9) das Steuerungsteil (8) der Vorrichtung bildet.
  10. Haartrockner nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung (7) mindestens zwei Schwenkklappen (23, 24) aufweist, die bezüglich der Ebene, die die Achse des Luftstroms umfasst, symmetrisch angeordnet sind.
  11. Haartrockner nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass der rohrförmige Körper (9) auf der einen und auf der anderen Seite seiner mittleren Ebene zwei Innenwände (14, 15) aufweist, die eine mittlere Düse (20) begrenzen.
  12. Haartrockner nach Anspruch 11, dadurch gekennzeichnet, dass die Seitenflanken der Innenwände (14, 15) Öffnungen (18, 19) aufweisen, die durch die Klappen (23, 24) verschlossen sind.
EP06356122A 2005-10-25 2006-10-17 Haartrockner mit einer Vorrichtung zum Ändern der Geometrie des Luftstromes Active EP1779745B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0510865A FR2892278B1 (fr) 2005-10-25 2005-10-25 Seche-cheveux comportant un dispositif permettant de modifier la geometrie du flux d'air

Publications (2)

Publication Number Publication Date
EP1779745A1 EP1779745A1 (de) 2007-05-02
EP1779745B1 true EP1779745B1 (de) 2008-05-14

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EP (1) EP1779745B1 (de)
CN (1) CN1954737B (de)
AT (1) ATE394961T1 (de)
BR (1) BRPI0604554A (de)
DE (1) DE602006001184D1 (de)
ES (1) ES2307278T3 (de)
FR (1) FR2892278B1 (de)

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Also Published As

Publication number Publication date
CN1954737A (zh) 2007-05-02
CN1954737B (zh) 2010-07-28
FR2892278B1 (fr) 2007-11-30
FR2892278A1 (fr) 2007-04-27
BRPI0604554A (pt) 2007-07-17
ATE394961T1 (de) 2008-05-15
ES2307278T3 (es) 2008-11-16
EP1779745A1 (de) 2007-05-02
DE602006001184D1 (de) 2008-06-26

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