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

Definitions

• the invention relates to a hand-held hair dryer with a housing which consists of a handle and an outer tube through which air can flow.
• the outer tube has an inlet and an outlet opening for an air flow, and means, for example a motor with a fan wheel and a heater, for generating and heating the air flow are provided in the housing.
• An inner tube is arranged in the outer tube, which absorbs at least the means for heating the air flow, and the inner tube is made of a material with higher temperature resistance than the outer tube.
• the invention is based on a hair dryer as disclosed in EP 0 463 31 5 A2 and which has a double-walled housing through which a secondary air flow can be conducted.
• This hair dryer has a central, load-bearing component, to which all other housing parts of the hair dryer are attached directly or indirectly, and is provided with a handle which can be rotated by individual angular steps about an axis of rotation approximately perpendicular to a longitudinal axis of the housing.
• This load-bearing component which is designed as an inner tube, is made of a material with higher temperature resistance than the outer tube. This has already achieved that different qualities of plastic materials could be used for the manufacture of the housing and the inner tube.
• the outlet opening of this housing is formed by the outer tube, which at the same time receives a protective grille, so that the outer tube comes into contact with the outflowing hot air and must be made of a material, for example a plastic, with a minimum temperature resistance.
• the object of the present invention is to provide an improved, new, user-friendly designed hair dryer, which is cheaper to produce.
• the invention solves this problem in that, in the case of a hand-held hair dryer of the type mentioned, the inner tube in the housing at least closes with the outlet opening of the outer tube or projects beyond the outlet opening of the outer tube in the flow direction and in that a hair styling tool, for example a nozzle, is inserted Diffuser or a similar tool to which the inner tube can be attached.
• a hair styling tool for example a nozzle
• the arrangement of the heater for heating the air flow in this inner tube ensures that the heated air stream does not flow to the outer tube at any point and that the outer tube, the handle and other housing components are loaded with a lower temperature. Since these components represent a large part of the housing, a significant saving in material costs is advantageously achieved here.
• the structurally provided closure of the inner tube with the outlet opening of the outer tube or a protrusion of the inner tube relative to the outlet opening of the outer tube ensures that the outer tube is thermally decoupled from the heated air flow. Furthermore, a direct connection of the components is achieved, which are in contact with the heated air flow, namely between the inner tube and the hair styling tool.
• a plastic with lower temperature resistance such as polypropylene (PP) for the production of the outer tube and only a plastic with higher temperature resistance, such as polyamide (PA) or polybutylene terephthalate (PBT), is required for the inner tube.
• a plastic which can be colored can also advantageously be used for the inner tube in which the heater is located. This can be used to indicate to the user that the inner tube is made of a different material than the housing outer tube surrounding it.
• Another advantage is that an outlet grille is provided directly on the inner tube and this grille can be preassembled on the inner tube.
• the inner tube and the outer tube are preferably arranged concentrically to one another.
• the outer diameter of the inner tube corresponds at least in some areas to the inner diameter of the outer tube.
• this enables a concentric arrangement of the inner tube in the outer tube.
• the outer diameter of the two pipes is almost identical, since the outer pipe is only larger by the amount of the wall thickness than the inner pipe. This advantageously avoids a striking difference in the diameters between the inner and outer tubes and enables the largest possible air-permeable cross section of the inner tube.
• the fastening means for releasably fastening the hair styling tool are provided on the inner tube. This direct attachment of the tool to the inner tube ensures that no forces act on the outer tube due to the inclusion of a hair styling tool and that the outer tube can thus advantageously be made from a material with lower strength than the inner tube.
• locking means are provided in the inner tube, which for fastening the hair styling tool, for example with a bayonet, a clip lock or the like.
• These latching means advantageously allow the tool to be fastened to the hairdryer quickly, easily and securely by a user.
• a channel for example a cable routing channel
• the motor cables are arranged, which connect the fan motor to the electrical operating elements arranged in the handle.
• This enlargement of the cross section of the housing through the channel and the accommodation of the cables in this channel advantageously keep the free largest possible cross section of the housing.
• this allows the outer tube of the housing to have the smallest possible diameter. The previously required annular cavity between the inner tube and the outer tube for accommodating the cables is thus avoided by the arrangement proposed here, the outer tube can be made smaller while the cross-section of the inner tube remains the same and the hair dryer can be made more manageable.
• the channel runs on the underside of the housing, the handle of the hair dryer also being fastened to this underside, so that the motor cable is in the most advantageous, shortest way between the inner tube and the electrical operating parts located in the handle runs.
• a further embodiment provides for the channel to be provided with closable openings on the air inlet and / or on the air outlet side of the housing. These openings advantageously allow the channel to be used in a variety of ways, for example as a cable channel.
• the housing has a substantially smooth, closed outer surface in the region of the inlet opening and an additional air filter can be attached to the outer surface of the housing. Due to the essentially smooth, closed outer surface of the housing in the area of the inlet opening, the hair dryer can advantageously be operated both without and with an additional air filter.
• the smooth, closed outer surface enables the user to operate a device that is both technically and optically complete. In order to avoid contamination of the hair dryer through the inlet opening and for safe and long-lasting operation of the device, however, an additional air filter is provided for attachment to the essentially smooth, closed outer surface of the housing.
• This additional air filter advantageously encompasses the outer surface of the housing at least in some areas.
• this air filter can be easily placed on the inlet end of the housing by the user, similar to a cover.
• locking means are provided for releasably fastening the air filter to the housing, so that the additional air filter can be clipped on by the user in a simple manner, for example on the housing.
• a slot-shaped recess be provided in the substantially smooth, closed outer surface of the housing. The slot-shaped design of this recess specifies a simple latching means for fastening the additional air filter to the housing.
• the slot-shaped recess is arranged on the outer surface of the housing in the circumferential direction of the outer tube.
• This Ausneh ⁇ tion has only a small footprint on the substantially smooth, closed outer surface of the housing and advantageously allows the secure attachment of an additional filter.
• the housing from at least three housing parts and to arrange all separating surfaces between the housing parts parallel to one another.
• the housing can be manufactured on a modular principle.
• the separating surfaces between the housing parts penetrate the handle essentially parallel to its main axis and the outer tube essentially completely perpendicular to its main axis.
• the vertical arrangement of the handle to the outer tube which is usually used, thus creates a separating surface which penetrates the entire height of the housing and thus provides an advantageous mounting option for all built-in parts.
• the handle of the hair dryer consists of a front and a rear handle shell and a middle part arranged between them, which also enables simple mounting of the handle and the components located therein.
• At least one grip shell in particular the rear grip shell, is spherically shaped on its outside. This spherical shape can take place in several planes, so that this grip shell allows the user an advantageous, secure hold.
• the housing parts from different materials, in particular from materials of different hardness. This enables a simple and inexpensive differentiation of diverse model series of similar hair dryers.
• the housing consists of three housing parts and the central part is spherically shaped on the outside.
• the crowning can be provided on the one hand in cross section and on the other hand in longitudinal section of the central part.
• the middle housing part consists of a softer material than the two outer housing parts. A secure hold of the dryer during and after use is thus advantageously achieved even on a smooth surface.
• the handle is advantageously closer to the outlet opening than to the inlet opening of the air flowable outer tube arranged.
• additional hair shaping tools such as a nozzle, diffuser or the like, which are attached to the outlet opening of the hair dryer, means that the hair dryer is no longer front-heavy.
• the handle is thus arranged in the center of gravity of the device, which can no longer tip over in the hand of the user and enables easier, safe handling.
• the handle can advantageously also be arranged centrally between the inlet and outlet openings of the air-flowable outer tube, as a result of which a uniform weight distribution can be achieved when using the dryer without additional tools.
• FIG. 1 is a side view of a hand hair dryer according to the invention
• FIG. 2 shows a hand hair dryer according to FIG. 1, but with a nozzle and an additional air filter in a side view
• FIG. 3 shows three housing parts for a hand hair dryer in an exploded view
• Fig. 4 shows a hand hair dryer according to the invention with its essential components as an exploded view in a reduced representation
• Fig. 5 shows an inner tube and a fan housing with the essential components arranged therein in an exploded view.
• a housing 10 for a hand hair dryer essentially consists of a handle 12 and an outer tube 14 through which air can flow and which is arranged approximately perpendicular to the handle 1 2.
• a connecting cable 74 is provided for the electrical connection of the hair dryer, which leads into the handle 1 2 at the lower end face.
• Operating elements 36 for example on / off and temperature selector switches, are provided on the front of the handle 12.
• the air-flowable outer tube 14 is provided with an inlet opening 16 on its rear end face. The air entering here is conveyed in the flow direction 64 through the outer tube 14 to the outlet opening 18 arranged on the front end side.
• An inner tube 42 is provided in the outer tube 14, which terminates with the outlet opening 18 of the outer tube 14 or projects beyond the front end face of the outer tube 14 by the projection 52 in the flow direction 64.
• An additional air filter 54 is placed on the inlet opening of the outer tube 14.
• the air filter 54 extends beyond the outer tube 14 in the circumferential direction and is placed on the front end of the outer tube in the manner of a cover.
• a nozzle 44 is placed on the front end of the inner tube 42 in the flow direction 64.
• a channel 46 is arranged on the underside of the housing 48 of the outer tube 14 and is designed, for example, as a cable routing channel. This channel 46 extends from the rear of the handle 12 to the inlet-side rear end of the outer tube 14 and from the front of the handle 12 to the outlet opening of the outer tube 14.
• An opening 50 can be provided on the end face of the channel 46.
• the housing 10 (FIG. 3) is made from at least 3 housing parts; a front housing part 20, a middle housing part 22 and a rear housing part 24.
• the separating surfaces 26, 28 between the housing parts 20, 22 and 24 are arranged essentially parallel to one another and divide the air-flowable outer tube 14 perpendicular to its flow direction 64.
• the handle 1 2 is divided parallel to its main axis and is divided into a front handle 30, a rear handle 32 and a middle part 34.
• the air-flowable housing 14 has an essentially hollow cylindrical shape and ends at its rear housing part 24 with the inlet opening 1 6.
• a recess 56 is provided on its upper side. This recess 56, which is rectangular in plan view, is arranged in the circumferential direction on the rear housing part 24 and is provided as a latching means for fastening an additional air filter with a snap or tilt lock.
• the three housing parts 20, 22, 24 as well as the nozzle 44 and the additional air filter 54 are shown in an exploded view in FIG. 4.
• the inner tube 42 with the fan housing 66 is arranged between the middle housing part 22 and the rear housing part 24.
• the motor cables 76 are led out of the inner tube 42 near the separation point between the inner tube 42 and the fan housing 66.
• Inner tube 42 and fan housing 66 are preassembled as an assembly and then inserted into housing parts 20, 22 and 24.
• the operating elements 36 for example an on / off switch and temperature controller, are provided in the handle part of the housing.
• the inner tube 42 and the fan housing 66 are shown in an enlarged view with all installation parts in FIG. 5.
• a protective grille 68 is inserted into the inner tube 42 and fastened in the outlet opening 70.
• locking means 72 are provided in the inner tube 42 for possible attachment of a hair styling tool, for example a nozzle 44.
• a heater 60 is arranged behind the grid 68 in the inner tube 42. This heater 60 is connected to a motor 58, which in turn is inserted into the fan housing 66.
• the fan wheel 62 is inserted into the inlet-side end of the fan housing 66 and connected to the drive shaft of the motor 58.

Landscapes

• Cleaning And Drying Hair (AREA)
• Control And Other Processes For Unpacking Of Materials (AREA)
• Confectionery (AREA)
• Drying Of Solid Materials (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7762607

Family Applications (1)

Country Status (6)

Families Citing this family (39)

Family Cites Families (16)

• 1996
  • 1996-05-09 AT AT96914185T patent/ATE215325T1/de not_active IP Right Cessation
  • 1996-05-09 AU AU57639/96A patent/AU5763996A/en not_active Abandoned
  • 1996-05-09 WO PCT/EP1996/001944 patent/WO1996037125A1/fr not_active Ceased
  • 1996-05-09 EP EP96914185A patent/EP0772409B1/fr not_active Expired - Lifetime
  • 1996-05-09 DE DE59608996T patent/DE59608996D1/de not_active Expired - Fee Related
• 1997
  • 1997-01-21 US US08/786,510 patent/US5701681A/en not_active Expired - Fee Related

Non-Patent Citations (1)

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