EP0306765B1 - Sèche-cheveux à main - Google Patents

Sèche-cheveux à main Download PDF

Info

Publication number
EP0306765B1
EP0306765B1 EP19880113689 EP88113689A EP0306765B1 EP 0306765 B1 EP0306765 B1 EP 0306765B1 EP 19880113689 EP19880113689 EP 19880113689 EP 88113689 A EP88113689 A EP 88113689A EP 0306765 B1 EP0306765 B1 EP 0306765B1
Authority
EP
European Patent Office
Prior art keywords
circuit board
motor
dryer
printed circuit
heater
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.)
Expired - Lifetime
Application number
EP19880113689
Other languages
German (de)
English (en)
Other versions
EP0306765A1 (fr
Inventor
Hans-Dieter Poweleit
Heinz-Jürgen Ohlsen
Heinrich Dr. Dr.-Ing. Komesker
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.)
Robert Krups GmbH and Co KG
Original Assignee
Robert Krups GmbH and Co KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27196457&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0306765(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE19873729774 external-priority patent/DE3729774A1/de
Priority claimed from DE3802638A external-priority patent/DE3802638C2/de
Priority claimed from DE3807287A external-priority patent/DE3807287C2/de
Application filed by Robert Krups GmbH and Co KG filed Critical Robert Krups GmbH and Co KG
Publication of EP0306765A1 publication Critical patent/EP0306765A1/fr
Application granted granted Critical
Publication of EP0306765B1 publication Critical patent/EP0306765B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 an electrically operated hand-held hair dryer with an inlet at one end and an outlet at the other end to accommodate an electric motor that drives an impeller, a heater for heating the air, and a motor circuit board with a triac or another electrical unit, such as a diode or the like . having switching and control device and with a guide device consisting of blades and arranged on the holder of the motor.
  • Such electrically operated hand hair dryers are known in numerous embodiments. Some of these known embodiments have obviously been previously used by the applicant. There are also different types of accommodation for the motor circuit board with its switching and control devices, including a triac.
  • a triac is a thyristor that passes and controls both half oscillations of an alternating current.
  • a first known embodiment of the arrangement of such a motor circuit board it has been accommodated in the interior of a hollow cylinder, which at one end partially encompasses the electric motor and which carries the holder of the heater of the hand hair dryer on its outer surface. This arrangement of the motor circuit board has not proven itself, in particular because there was no cooling air for the switching and control devices, in particular for the triac, in the almost closed cavity of the hollow cylinder.
  • the invention has for its object to further improve electrically operated hand-held hair dryers of the type described in the introduction, in particular in such a way that the triac is moved to such a location in the interior of the housing of the hand-held hair dryer in which optimum cooling takes place. This goal should be achieved with simple and cheap means.
  • one of the blades of the tracking device is removed and the triac is instead arranged in this area of the tracking device.
  • the twelfth was removed and the triac was instead placed in the missing area of the follow-up device.
  • the tests carried out with such an arrangement have shown that optimal cooling of the triac is achieved. This is not least because it lies completely in the air flow that is generated by the impeller driven by the electric motor. Since the triac practically takes the place of the missing shovel of the follow-up device, there are no changes in the dimensions of the follow-up device, so that the housing of the hand-held hair dryer can also retain its previous shape.
  • the follow-up device It is advisable to have the follow-up device have a recess in the area of the missing blade, into which an extension of the motor circuit board having the triac protrudes.
  • the embodiment of the recess is chosen so that the triac is pressed into the correct position and also held in this.
  • the recess arranged in parallel and at a distance from one another, which are connected to one another by an upper boundary. It is furthermore expedient to have the upper limit have a cutout for engaging the free end of the extension of the motor circuit board. It is expedient to solder the triac to the motor circuit board in such a way that it complements the missing blade of the tracking device.
  • the boundary wall of the cutout enclose such an angle with the horizontal to let, which is approximately equal to the angle that a scoop of the Nachleit proposed includes the horizontal.
  • Such an angle is approximately 60 °.
  • the invention also relates to an electrically operated hand-held hair dryer in which the heating is accommodated by a carrier, the mating contacts of which can be connected to the contacts of the motor circuit board by plugging on.
  • hand hair dryers are also available in a variety of designs.
  • a heater is generally used, which has a carrier which is formed from two insulating plates which are arranged crosswise and which accommodate at least one heater designed as a heating coil which is held on the peripheral surface of the insulating plates in such a way that areas of the helical one Engage the heater in recesses in the edges of the insulating plates. This means that the helical heater is only fixed at a few points. Otherwise, it bridges the free space between the areas of the insulating plates.
  • WO 80/00783 has disclosed an electrically operated hand-held hair dryer which has a two-part housing, in the interior of which the heating device is arranged, switching devices being provided on the outer surface of the housing.
  • An electric motor is arranged in the interior of the housing of this known manual hair dryer, which drives an impeller which serves to transport the air.
  • the electric motor is arranged in the rear part of the housing in such a way that it can be easily removed from the cross-divided housing.
  • protruding plug contacts are present on the front side of the electric motor, which interact with receptacle-like counter contacts.
  • the invention is based on the additional object of further improving electrically operated hand hair dryers of the type mentioned, in particular the manufacture of a light connection between the contacts of the heater and the motor circuit board is to be achieved.
  • the support holding the heater can be connected to the motor circuit board by plugging it in, creating a releasable connection between its contacts and the mating contacts of the motor circuit board.
  • this training of the electric operated hair dryer has significant advantages over the known.
  • the heater can be prefabricated with the carrier and the associated contacts as a structural unit, which is then attached as a whole to the motor circuit board. With this plugging in, the contacts of the heater come into conductive connection with the mating contacts of the motor circuit board in the end position. The cumbersome and considerable costly soldering of the contacts and the counter contacts is eliminated.
  • the slots are arranged on the front end face of the motor printed circuit board, the angled free ends of the contact tabs engaging in the slots while making contact.
  • the slots can be created in the manufacture of the motor circuit board, so that additional operations are not required.
  • each contact tab made of a metal strip, each of which is connected in its central region to one of the insulating plates which form the carrier and arranged one above the other and one end of which is in conductive connection with the heating device, while the opposite other end is in the slots the motor circuit board. It is advisable not only to manufacture the contact tabs from a current-conducting, metallic material, but also to have them have resilient properties. These can be used in a simple manner to generate the desired contact pressure.
  • the housing of this known electric hand-held hair dryer has an inlet grille for the air to be drawn in on one side and an outlet grille for the outlet of the heated air on the other.
  • the outlet grille consists of an outer ring and several, connected by connecting bridges connected inner rings. At least one of these inner rings is conical in such a way that the smallest diameter of the cone is directed towards the outer ring.
  • an electrically operated hand-held hair dryer In a proposed embodiment of an electrically operated hand-held hair dryer, this has a long-dimensioned motor board, which is approximately rectangular in plan view and which has open-sided slots on its front free end, into which parts of the support of the heater can engage when plugged on.
  • the length of the motor circuit board corresponds approximately to that of the support of the heater.
  • the plug-on area between the motor circuit board and the support of the heater is kept relatively short.
  • the motor circuit board as a body encompassing the motor, which has guide and support areas and on its surface facing the outlet grille, contacts which can be detachably connected to the mating contacts of the heating device by being plugged on. Provision is preferably made for the motor conductor to be in the form of an annular body, the central recess of which is penetrated by the motor and the outer boundary wall of which can be used as a guide area, while a partial area serves as a support area.
  • the motor circuit board is therefore no longer designed as a rectangular body when viewed from above, which is arranged in extensions of the axis of the electric motor, but instead the motor circuit board now encompasses this electric motor, guide and support areas being provided on the motor circuit board, which interact with adjacent areas of the housing of the hand-held hair dryer. A detachable connection of this motor circuit board with the support of the heater is preferred.
  • the motor circuit board can still have all the essential electronic or electrical components. Assembly is made easier by prefabricated assemblies.
  • Another advantage is that the motor circuit board is in the immediate vicinity of the motor, so that there are very short connections to the connection contacts of the motor.
  • a receptacle for the motor in the area of the middle part of a holder of a follow-up device, which is limited in its upper part by a circumferential extension of the middle part, which can cooperate with the inner boundary wall of the motor circuit board.
  • a long-held guide is advantageous when attaching the mounting plate.
  • both the extension mentioned and the inner wall of the Vane support part has a support shoulder for the support area of the motor circuit board.
  • These support shoulders can be easily produced in the manufacture of the housing of the hand hair dryer. Since the two support shoulders are arranged at a distance from one another, there is the advantage that the annular motor circuit board is supported both in the area of its inner diameter and in the area of the outer diameter.
  • a free space laterally offset from the support shoulders in the bottom of the holder of the guiding device for accommodating protruding parts of the motor circuit board.
  • the dimensions of this free space are kept such that the usual electrical or electronic components arranged on the motor circuit board or also the connection points can be accommodated in it.
  • the motor circuit board has contacts protruding vertically from its base plane, which have mating contacts are pluggable, which are arranged on the support of the heating device.
  • the contacts of the motor circuit board are designed as flat plugs, the rear end of which is soldered to the motor circuit board, while the front end interacts with a mating contact of the heater designed as a clamping spring.
  • the mating contacts on the heating device are designed as flat plugs and the contacts on the motor printed circuit board as clamping springs.
  • the switch circuit board which interconnect connections or the like. can carry in any number and composition, has recesses which interact with retaining projections.
  • the latter are provided directly on the inside wall of the handle. These holding projections are thus also produced in the manufacture of the handle halves.
  • the hand hair dryer shown in the embodiment of FIGS. 1 to 5 is generally designated 10.
  • the manual hair dryer 10 has a housing which is composed of a front housing part 11 and a rear housing part 12.
  • the two housing parts 11 and 12 made of an insulating material, in particular plastic, can be connected to one another by means known per se and therefore not shown.
  • an inlet grille 13 is arranged for sucking in the fresh air.
  • This inlet grille 13 can be locked, for example, with the rear end of the housing part 12.
  • such an inlet grille 13 has a plurality of inlet openings which are expediently arranged in concentric partial rings.
  • the electrically operated hand-held hair dryer 10 has an outlet grill 15.
  • this is a one-piece plastic body which has an outer ring and a plurality of inner rings which are concentric with the center. These have different diameters and are connected to one another via connecting webs.
  • At least one of the inner rings is arranged inclined to the longitudinal axis A-A of the hair dryer 10.
  • the inclination of the inner ring is approximately 25 °.
  • a recess In the vicinity of the outer ring of the outlet grille 15, a recess, not specified, is provided. In this way, space is created for engaging the rear end of a shaping nozzle 14 which, if required, can be detachably connected by the user to the front part 11 of the housing of the hand-held hair dryer 10.
  • a latching connection is expediently chosen as the releasable connection. In this way, detents and counter-detents can be generated directly in the manufacture of the housing or the molding nozzle.
  • the outlet grille 15 is inserted into the interior of the front part 11 of the housing.
  • the rear end of the outlet grille 15 comes into operative connection with the ends of the supports 17 of a heater, generally designated 16, facing it.
  • a heater generally designated 16, facing it.
  • the heater 16 which is arranged approximately in the middle of the housing of the hand-held hair dryer, has a design which is known per se. It consists of a plurality of flat supports 17 which extend essentially in the direction of the longitudinal axis A-A of the hand hair dryer 10. The actual heating wire or the heating coil carried by the carriers 17 is omitted in FIGS. 1 to 5 for the sake of simplicity.
  • the follow-up device 20 In front of the heater 16, seen in the direction of flow of the air, there is a follow-up device generally designated 20, the design of which is best seen in FIGS. 1 and 2 of the drawing is. It follows from this that the after-guiding device is a body made in one piece from an insulating material, which is divided into several sub-areas.
  • the follow-up device 20 initially has a central, essentially flat middle part 33 with an opening in the center for the passage of the motor shaft 21 of an electric motor, generally designated 18.
  • fastening screws 32 are also provided, with which the follow-up device 20 is fixed. In the selected exemplary embodiment, a total of three fastening screws 32 are provided, which are each offset by 120 ° to one another.
  • a connecting part 34 adjoins the flat central part 33 of the follow-up device 20, which runs approximately in the direction of the longitudinal axis AA of the hand-held hair dryer 10 and which then merges into a further part, not specified in more detail, which is perpendicular to the longitudinal axis AA and to which part then turns
  • the blade support part 35 extends in the direction of the longitudinal axis AA.
  • the blade support part 35 has a total of eleven blades 36, one of which is shown in FIG. 3 of the drawing. It follows from this that each blade 36 of the follow-up device 20 is curved.
  • the connecting line through the ends of the blades 36 includes an angle ⁇ of approximately 60 ° with the horizontal.
  • the guide device 20 has twelve blades 36, but according to the invention the twelfth blade has been removed and in this missing area the triac 41 of the motor printed circuit board 43 is arranged, on which further switching and control devices of a known type are also accommodated.
  • the arrangement of the triac 41 takes place in the upper right area of FIG. 2 of the drawing.
  • a missing blade 36 has a recess generally designated 37.
  • This recess has parallel and spaced-apart boundaries 38 which are connected to one another by a further upper boundary 39.
  • the upper limit 39 has a cutout 40 for engaging the free end of an extension 42 of the motor circuit board 43 (cf. FIG. 5 of the drawing).
  • the right-hand boundary wall of the cutouts 40 in FIGS. 4 and 5 encloses an angle ⁇ with the horizontal which is approximately equal to the angle which one of the blades 36 forms with the horizontal. This means that the angle ⁇ is substantially equal to the angle ⁇ .
  • the size of each of these angles is 60 °.
  • the triac 41 is pressed and held in the correct position.
  • the triac 41 which may have a known bulge, is soldered to the motor circuit board 43 and forms the missing twelfth blade of the secondary guide 20. It is therefore in the air flow and is optimally cooled.
  • the carrier 17 of the heater 16 are arranged offset with respect to the blades of the Nachleit worn 20. I.e. the blades and the carriers 17 are not in direct succession.
  • the staggered arrangement of the two parts mentioned is chosen in order to achieve a swirling of the sucked-in air and thereby a reduction in the temperatures occurring in the area of the heater. The temperatures are reduced to such an extent that any disadvantageous impairment of the housing area surrounding the heater is eliminated.
  • the tracking device 20 forms at the same time a holder for the electric motor 18.
  • This electric motor 18 has a design known per se and is also used in a manner known per se for driving an impeller 22.
  • This is rotatably arranged on the motor shaft 21.
  • the impeller 22 has a hub 31 molded onto it, in the center of which there is a bore into which the motor shaft 21 engages. The air sucked through unspecified openings of the inlet grille 13 reaches the area of the impeller 22 when the electric hand-held hair dryer is used as intended, then in the area of action of the after-guide device 20 and thus also in the area of the triac 41, which is at that point of the Nachleit Rhein 20 is arranged on which one of the blades 36 was previously removed.
  • the sucked-in air finally arrives at the heater 16. After the heating there, the air leaves the outlet grille 15 and possibly the front opening of a shaping nozzle 14 if the latter has previously been releasably connected to the housing part 11 by the user.
  • the hand-held hair dryer 10 has a handle 23 which encloses an angle with the longitudinal axis AA which is smaller than a right one.
  • the handle is hollow. It can therefore be used to house operating parts of the hand-held hair dryer.
  • a switch 26 of a known type is accommodated in the interior of the hollow handle 23 and is covered on the outside by a cover panel 27.
  • the cover panel 27 can be displaced to a limited extent on the inner walls of the handle 23.
  • guides, not shown, are used, which can cooperate, for example, with a projection of the cover plate 27. By moving the cover panel, the switch can be moved into its display or exhibition.
  • a regulator wheel 28 is rotatably mounted in the cavity of the handle, which has an area its peripheral surface passes through an opening in the wall of the handle 23 to the outside and is thus accessible to the user.
  • this control wheel for example, the power of the electrically operated hand hair dryer 10 can be regulated.
  • an anti-kink grommet 25 with a continuous bore for accommodating one end of an electrical lead 24 is arranged in the area of the end face of the handle 23, an anti-kink grommet 25 with a continuous bore for accommodating one end of an electrical lead 24 is arranged.
  • the other end, not visible in FIG. 1, of the electrical supply line 24 carries a known plug which can be inserted into a socket by the user in order to supply the electric motor 11 with power after the switch has been turned into the switched-on position using its handle part 29 brought.
  • the end of the electrical lead introduced into the hollow interior of the handle 23 interacts in a known manner with a strain relief clamp 30, by means of which the connection points are to be relieved of tensile forces.
  • the motor printed circuit board of the hand-held hair dryer 10, generally designated 43, is a flat body made of electrically insulating material, which is arranged in the direction of the longitudinal axis AA of the hand-held hair dryer 10.
  • the rear end of the motor circuit board 43 faces one end face of the electric motor 18.
  • the known motor conductor connections are identified by 44 in FIG. 7 of the drawings.
  • the motor circuit board 43 carries in a generally known manner Wise switching and control devices.
  • the motor printed circuit board 43 has a central recess 45, which covers an essential part of the length of the motor printed circuit board and is open towards the front end face. Laterally next to this recess 45, slots 46 are arranged in the end face of the motor circuit board 43, which also remain open towards the free end face. Each of the two existing slots 46 is assigned a conductor track 47, which can be attached to the motor circuit board 43 in a known manner.
  • the motor circuit board 43 thus has mating contacts 47 which interact with the contacts of the heater 16.
  • the heater 16 includes a carrier 17 which is composed of two plate-shaped insulating bodies which are arranged crosswise. These insulating plates are designated 48 in the selected exemplary embodiment and inserted into one another. They each have in their area facing the motor circuit board 43 a recess 49 which is open towards the end face.
  • the two cross-arranged, plugged-together insulating plates 48 receive the heater 16 in a known manner.
  • the heater 16 is designed in the selected embodiment as a heating coil.
  • the outward-facing end face of the insulating plates 48 have, in a known manner, a multiplicity of grooves arranged next to one another, in each of which a portion of the filaments of the heater engage. Since the attachment of the filament of the heater is known in principle, only a partial area of the same is shown in FIG. 9.
  • contact tabs 50 and 51 are attached to the insulating plates 48 of the carrier 17. These Contact tabs are conductively connected to the coil of the heater in a known manner. A region of each contact tab 50 or 51 is attached to one of the insulating plates 48. This can be done, for example, by using a hollow rivet. But you can also have the contact tabs have connecting tongues, reach through the openings in the insulating plate and then flanged. The rear ends of the contact tabs, that is to say those which are to be conductively connected to the heater 16, are denoted by 52 and 53. In the selected exemplary embodiment, these are solder joints.
  • the front free ends of the contact tabs 50 and 51 are designated 54 and 55. They engage in the slots 46 of the motor circuit board 43 after the assembly of the individual parts. This results in a slight connection between the contact tabs 50 and 51 on the one hand and the mating contacts 47 on the other hand. On the other hand, this also creates a mechanical connection between the carrier 17 and the motor circuit board 43. In order to achieve sufficient contact, it is advisable to produce the contact tabs 50 and 51 from a metallic material with elastic properties. In this way, there is good contact between the free ends 54 and 55 of the two contact tabs and the associated mating contacts 47 of the motor circuit board 43.
  • FIG. 7 of the drawing shows that a structural unit is prefabricated which has the carrier 17, the heater 16 and the contact tabs 50 and 51, respectively.
  • the helical heater is omitted in the upper part of FIG. 7.
  • Such a prepared assembly is then pushed in the direction of arrow B onto the motor circuit board 43, which is already connected to the motor 18 via the connecting lines 44.
  • the front free ends 54 and 55 of the contact tabs 50 and 51 then reach the forward open slots 46 on the end face of the motor circuit board 43.
  • This not only creates an electrically conductive connection between the contacts and counter-contacts, but also a mechanical connection made between the motor circuit board 43 and the carrier 17.
  • Fig. 9 of the drawings In this position, the front free ends 54 and 55 of the contact tabs 50 and 51 are in the slots 46 of the motor circuit board 43.
  • 10 to 16 a third embodiment of the electrically operated hand hair dryer is shown. As far as its parts have remained unchanged with respect to the two previously mentioned exemplary embodiments, the same reference numerals have been retained. 10 to 16 in turn includes an electric motor 18. A housing 67 with a circular cross section is arranged in the rear housing part 12 to accommodate the same. The electric motor 18 with its rear region is inserted into this receptacle 67 in the manner shown in FIG. 11. The receptacle 67 for the motor 18 is delimited to the rear of the hand hair dryer 10 by the flat central part 33 and laterally by the connecting part 34. This connecting part 34 has a circumferential extension 88, cf. FIG. 14 of the drawing.
  • the wall thickness of the front part of the extension 88 is reduced in thickness, so that a circumferential support shoulder 89 is formed.
  • This support shoulder 89 interacts with areas of the motor printed circuit board 43 which, in this exemplary embodiment - see FIG. 13 of the drawing - has an annular design.
  • the motor circuit board in this case has a central recess 97 which is penetrated by the motor 18, but the extension 88 shown in FIG. 14 also engages in this recess.
  • the circuit board 43 does not come into direct contact with the peripheral surface of the motor 18 in the installation position according to FIG. 14 of the drawing. Rather, the outer boundary wall 100 of the motor circuit board 43 bears against the inside of the extension 88.
  • the support area 101 of the motor printed circuit board 43 lies on the support shoulder 89 in each case. There are two such support shoulders 89. The second is located in the region of the inner wall of the blade support part 35. In the end position shown in FIG.
  • the outer boundary wall 100 thus lies against the inner wall of the blade support part 35, while the inner boundary wall 102 interacts with the extension 88.
  • a free space 90 is created below the motor circuit board 43 in the bottom 36 of the after-guide device 20. This free space 90 is dimensioned such that the electronic or electrical components 92 of the motor printed circuit board 43 facing the floor 66 find space in it.
  • the motor circuit board 43 On the side facing the outlet of the handheld hair dryer 10, the motor circuit board 43 is initially provided with a number of electronic or electrical components 82, as can be seen in FIG. 13 of the drawings. There are also connections for connecting lines 98 and connections for the movable motor connections 96, which can be brought into conductive connection with the fixed motor connections 87, the latter on the front free end face of the electric motor 18 are provided.
  • each of the contacts 84 is designed as a flat plug.
  • This flat connector 84 penetrates a hole in the motor circuit board 43, which is not described in more detail. Its rear end is connected to the motor circuit board 43 via a soldering point 91. The front free end of each tab 84 cooperates with a mating contact.
  • These counter contacts also have different designs, but are each assigned to the heater 16.
  • the counter contact designated 85 is designed as a clamping spring, i.e. seen in cross-section, it is designed in the form of a bow, with inward bends of the clamping spring making a conductive connection with the outer surface of the tab connector.
  • Each mating contact 85 is firmly connected to the heater 16 by a hollow rivet 86.
  • the hollow rivet 86 also holds a tap, not specified in more detail.
  • the counter contacts 85 are each arranged in front of the end face of the heater 16, so that they can be simply plugged into the contacts 84 of the motor circuit board 43. In the selected embodiment, a total of three tabs 84 are provided on the motor circuit board 43. If required, however, more flat plugs can easily be attached, to which a corresponding number of mating contacts 85 on the heater 16 must then be assigned. In the drawings, it is left open with which parts of the heater the counter contacts conduct together. This is because this can be done in a generally known manner. Because of the fact that we are known, there is no graphic representation of the resistance wires of the heater.
  • Fig. 16 of the drawing differs from Figs. 14 and 15 only in that the tabs and the clamping springs are interchanged.
  • the clamping springs 93 are now assigned to the motor circuit board, while the flat plugs, which are now designated 94, lie on the heater 16.
  • the parts 93 and 94 are plugged together by transferring the heater 16 in the direction of the electric motor 18.
  • the tabs 94 come to lie in the region between the two legs of the clamping spring 93 in the end position , so that a good electrical connection is also ensured here.
  • FIG. 16 of the drawing differs from Figs. 14 and 15 only in that the tabs and the clamping springs are interchanged.
  • the clamping springs 93 are now assigned to the motor circuit board, while the flat plugs, which are now designated 94, lie on the heater 16.
  • the parts 93 and 94 are plugged together by transferring the heater 16 in the direction of the electric motor 18.
  • the tabs 94 come to lie in the region between the two legs of
  • the manual hair dryer 10 has - as already mentioned - a handle 23 which is held hollow and consists of two halves, one of which is assigned to the front housing part 11 and the other to the rear part 12 .
  • This cavity is used to house electrical switching and control devices.
  • a switch 26 of a known type is initially accommodated in the interior of the hollow handle 23.
  • the handle part 29 of this switch passes through a window 69, see FIG. 12 of the drawing.
  • a further, but smaller, window 68 is arranged in the boundary wall of the handle 23 above the window 69.
  • the portion of a regulator wheel 28 projects through this in the manner shown in FIG. 11. This regulator wheel 28 is rotatably mounted. With it, the power of the electrically operated hand-held hair dryer 10 can be regulated in a known manner.
  • the switch 26 is assigned a switch circuit board, generally designated 71, which - see FIG. 13 - is rectangular in plan view. Conductor tracks and connections 99 are arranged in a known manner on this switch circuit board 71.
  • the switch circuit board 71 For its attachment in the cavity of the handle 22, the switch circuit board 71 has a total of four recesses, of which the two upper ones shown in FIG. 13 are designed as rectangular openings, while the ones located in the region of the lower end face are designed in a slot-like manner.
  • the recesses are each designated 72. They interact with holding projections 70 which are directly molded onto the one inner wall of the handle 23.
  • the switch circuit board 71 is secured in its final position shown in FIG.
  • the inner wall of the handle 23 is provided with projections 103 which have internal bores and into which retaining screws 104 engage, cf. FIGS. 11 and 12 of the drawing.
  • FIG. 13 of the drawing also shows that the ring-shaped motor circuit board 43 is combined with the switch circuit board 71 to form one structural unit. This is done by using a plurality of connecting lines 98. These are dimensioned such that the ring-shaped motor circuit board can grip around the motor 18, as is shown in FIG. 11. In contrast, the switch circuit board 71 is plugged onto the holding projections 70.
  • the connecting lines 98 can be inserted into unspecified, forwardly open slots which are present in the region of the end face of the blade support part 35.
  • the annular motor circuit board rests on the support shoulders 89 without special fastening devices.
  • such an arrangement is sufficient because the position of the motor circuit board 43 is secured by joining the housing parts of the hand hair dryer 10.
  • additional connecting means can also be used. However, these should be solvable.
  • annular motor circuit board as shown in FIG. 13 is not absolutely necessary. It is important that in the embodiment according to FIGS. 10 to 16 of the drawing the motor circuit board is designed such that it can grip around the electric motor 18. If this engine 18 e.g. should have a cross-sectional area other than circular, the motor circuit board can be equipped with a correspondingly designed recess 97.
  • the contacts and mating contacts of the motor circuit board 43 and the heater can have a design that differs from the exemplary embodiments shown. The number of existing cooperating contacts and counter-contacts can also be varied.
  • both the design and the shape of the recess 37 and also the cutout 40 can be varied in the tracking device.
  • the blades 36 of the guide device 20 can enclose an angle to the horizontal that deviates from 60 °. In this case, the angle ⁇ according to FIG. 5 of the drawing would also have to be appropriately changed.
  • a triac is always mentioned in the foregoing as an electronic component
  • other electronic components such as a diode or the like, can also be used in the hairdryer in the manner according to the invention.
  • the aim is always to give the respective electronic component optimal cooling in the hand hair dryer.

Claims (21)

  1. Sèche-cheveux à main (10), à entraînement électrique, comportant un boîtier (11, 12) qui présente, à une extrémité, un orifice d'entrée (13) et à l'autre, un orifice de sortie (14), pour loger un moteur électrique (18) entraînant une roue à aubes (22), un dispositif de chauffage (16) destiné à échauffer l'air ainsi qu'une plaquette de circuit imprimé (43) pour moteur comportant un triac (41) ou autre dispositif de commutation et de commande présentant un autre composant électrique, tel qu'une diode ou analogue, et un dispositif de guidage complémentaire disposé sur le support du moteur et constitué par des aubes, caractérisé en ce que le triac (41) ou un autre composant électronique du sèche-cheveux à main (10) est disposé dans la zone du dispositif de guidage complémentaire (20).
  2. Sèche-cheveux à main selon la revendication 1, caractérisé en ce qu'une des aubes (36) du dispositif de guidage complémentaire (20) est éliminée et qu'à la place de celle-ci le triac (41) est disposé dans cette zone.
  3. Sèche-cheveux à main selon la revendication 1 ou 2, caractérisé en ce que le dispositif de guidage complémentaire (20) présente dans la zone de l'aube manquante (36) un évidement (37) dans lequel pénètre un prolongement (42) de la plaquette de circuit imprimé (43) du moteur, prolongement qui présente le triac (41).
  4. Sèche-cheveux à main selon la revendication 3, caractérisé en ce que l'évidement (37) présente des limitations disposées parallèles et écartées l'une de l'autre, et qui sont reliées entre elles au moyen d'une limitation supérieure (39), et en ce que la limitation supérieure (39) présente une échancrure (40) destinée à l'engagement de l'extrémité libre du prolongement (42).
  5. Sèche-cheveux à main selon la revendication 3 ou 4, caractérisé en ce que l'une des parois de limitation de l'échancrure (40) fait avec l'horizontale un angle qui est approximativement égal à l'angle que fait une aube (36) avec l'horizontale (figures 3 et 5).
  6. Sèche-cheveux à main à entraînement électrique selon la revendication 1, dans lequel le dispositif de chauffage est tenu par un support et est connecté au moyen de contacts avec des contacts complémentaires de la plaquette de circuit imprimé du moteur, caractérisé en ce que le support (17) qui maintient le dispositif de chauffage (16) peut être relié par enfichage à la plaquette de circuit imprimé (43) du moteur en créant une connexion détachable entre ses contacts (50, 51) et les contacts complémentaires (47) de la plaquette de circuit imprimé (43) du moteur.
  7. Sèche-cheveux à main selon la revendication 1 ou 6, caractérisé en ce que le support (17) présente des pattes de contact (50, 51) reliées en étant conductrices au dispositif de chauffage (16), pattes qui pénètrent, lors de son enfichage, dans des fentes (46) de la plaquette de circuit imprimé (43) du moteur qui coopèrent avec des pistes conductrices (47).
  8. Sèche-cheveux à main selon la revendication 6 ou 7, caractérisé en ce que les fentes (46) sont disposées sur la surface frontale avant libre de la plaquette de circuit imprimé (43) du moteur, et que les extrémités libres rabattues (54, 55) des pattes de contact (50, 51) viennent en prise dans les fentes (46) en donnant le contact.
  9. Sèche-cheveux à main selon la revendication 6, caractérisé en ce que chacune des pattes de contact (50, 51) est constituée par une bande de métal qui est reliée dans chaque cas dans sa zone médiane à une des plaques isolantes disposées de façon croisée et qui forment le support et dont une des extrémités est reliée par conduction au dispositif de chauffage (16) tandis que l'autre extrémité (54, 55) située à l'opposé vient en prise dans les fentes de la plaquette de circuit imprimé (43) du moteur.
  10. Sèche-cheveux à main selon la revendication 1 ou 6, caractérisé en ce que la plaquette de circuit imprimé (43) du moteur est conformée en un corps qui entoure le moteur (18), qui présente des zones de guidage et d'appui (100, 101) ainsi que des contacts (64, 93) sur sa surface située à l'opposé de la grille de sortie (15), lesquels contacts peuvent être reliés par enfichage, de façon détachable, à des contacts complémentaires (85, 94) du dispositif de chauffage (16) (figures 11 à 16).
  11. Sèche-cheveux à main selon la revendication 10, caractérisé en ce que la plaquette de circuit imprimé (43) du moteur est conformée en un corps annulaire dont l'évidement médian (57) est traversé par le moteur (18) et dont la paroi de limitation extérieure (100) peut être utilisée comme zone de guidage, tandis qu'une zone partielle de sa surface supérieure sert de zone d'appui (101).
  12. Sèche-cheveux à main selon la revendication 10 ou 11, caractérisé en ce que dans la zone de la partie médiane (33) du support (19) du dispositif de guidage complémentaire (20), est disposé un logement (67) pour le moteur (19), qui et limité dans sa partie supérieure par un prolongement (88) périphérique de la partie médiane (33), qui coopère avec la paroi de limitation intérieure (102) de la plaquette de circuit imprimé (43) du moteur.
  13. Sèche-cheveux à main selon la revendication 10, caractérisé en ce que la paroi (100) de limitation extérieure de la plaquette de circuit imprimé (43) du moteur coopère avec la paroi intérieure d'une pièce (35) de support d'aubes et qu'aussi bien le prolongement (88) que la paroi intérieure de la pièce (35) de support d'aubes présentent un épaulement d'appui (89) destiné à la zone d'appui (101) de la plaquette de circuit imprimé (43) du moteur.
  14. Sèche-cheveux à main selon la revendication 13, caractérisé en ce que dans la base (66) du support (19) du dispositif de guidage complémentaire (20) est aménagé un espace libre, décalé latéralement par rapport aux épaulements d'appui (89) et destiné à loger les pièces de la plaquette de circuit imprimé (43) qui font saillie.
  15. Sèche-cheveux à main selon la revendication 10, caractérisé en ce que la plaquette de circuit imprimé (43) du moteur est munie de dents d'encliquetage qui Coopèrent avec des dents d'encliquetage complémentaires situées sur les parois voisines du support (19) du dispositif de guidage complémentaire (20).
  16. Sèche-cheveux à main selon la revendication 10, caractérisé en ce que la plaquette de circuit imprimé (43) du moteur présente des contacts (84 ou 93) qui font saillie verticalement à partir du plan de base de celle-ci, qui peuvent être connectés par enfichage avec des contacts complémentaires (85 ou 94) qui sont disposés sur le support (17) du dispositif de chauffage (16).
  17. Sèche-cheveux à main selon la revendication 16, caractérisé en ce que les contacts (84) sont conformés en contacts plats dont l'extrémité arrière est soudée à la plaquette de circuit imprimé (43) du moteur et dont l'extrémité avant coopère avec un contact complémentaire conformé en cosse à ressort (85), du dispositif de chauffage (15) (figures 14 et 15).
  18. Sèche-cheveux à main selon la revendication 16, caractérisé en ce que les contacts complémentaires (94) situés sur le dispositif de chauffage (16) sont conformés en fiches plates et que les contacts (93) situés sur la plaquette de circuit imprimé (43) du moteur sont conformés en cosses à ressort.
  19. Sèche-cheveux à main selon les revendications 16 à 18, caractérisé en ce que les contacts complémentaires (85 ou 94) font saillie au-delà de la surface frontale du support (17) du dispositif de chauffage (16) et sont munis d'un organe de branchement.
  20. Sèche-cheveux à main selon la revendication 10, caractérisé en ce que la plaquette de circuit imprimé (43) de moteur est connectée à une plaquette de circuit imprimé faisant interrupteur (71) par l'intermédiaire de conducteurs de liaison (98), pour constituer une unité structurelle préfabriquée.
  21. Sèche-cheveux à main selon la revendication 20, caractérisé en ce que la plaquette de circuit imprimé (71) formant interrupteur présentant des organes de branchement de pistes conductrices ou similaires, est munie d'échancrures (72) qui servent à son enfichage sur des saillies de retenue (70) sur les parois intérieures de la poignée (23).
EP19880113689 1987-09-05 1988-08-23 Sèche-cheveux à main Expired - Lifetime EP0306765B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3729774 1987-09-05
DE19873729774 DE3729774A1 (de) 1987-09-05 1987-09-05 Elektrisch betriebener handhaartrockner
DE3802638 1988-01-29
DE3802638A DE3802638C2 (de) 1988-01-29 1988-01-29 Elektrisch betriebener Handhaartrockner
DE3807287A DE3807287C2 (de) 1988-03-05 1988-03-05 Elektrisch betriebener Handhaartrockner
DE3807287 1988-03-05

Publications (2)

Publication Number Publication Date
EP0306765A1 EP0306765A1 (fr) 1989-03-15
EP0306765B1 true EP0306765B1 (fr) 1992-04-22

Family

ID=27196457

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880113689 Expired - Lifetime EP0306765B1 (fr) 1987-09-05 1988-08-23 Sèche-cheveux à main

Country Status (1)

Country Link
EP (1) EP0306765B1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD715996S1 (en) 2013-09-26 2014-10-21 Dyson Technology Limited Hair dryer
USD715995S1 (en) 2013-09-26 2014-10-21 Dyson Technology Limited Hair dryer
USD716492S1 (en) 2013-09-26 2014-10-28 Dyson Technology Limited Hair dryer
US9420864B2 (en) 2013-07-05 2016-08-23 Dyson Technology Limited Hand held appliance
US9596916B2 (en) 2013-07-05 2017-03-21 Dyson Technologies Limited Hand held appliance
USD791407S1 (en) 2015-01-12 2017-07-04 Dyson Technology Limited Hair appliance
EP4108073A1 (fr) * 2021-06-25 2022-12-28 Yamabiko Corporation Ventilateur à flux axial

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4016293A1 (de) * 1990-05-21 1991-11-28 Braun Ag Haartrockner
DE19634751A1 (de) * 1996-08-28 1998-03-05 Braun Ag Elektrisches Drahtheizelement
EP1643804B1 (fr) * 2004-09-29 2007-01-03 Leister Process Technologies Réchauffeur d'air
FR2876513B1 (fr) 2004-10-08 2007-03-16 Arvinmeritor Light Vehicle Sys Boitier de collecteur comprenant une protection thermique
GB201205679D0 (en) 2012-03-30 2012-05-16 Dyson Technology Ltd A hand held appliance
GB2501175B (en) 2012-03-30 2014-04-23 Dyson Technology Ltd A hand held appliance
GB201205695D0 (en) 2012-03-30 2012-05-16 Dyson Technology Ltd Hand held appliance
GB201205690D0 (en) 2012-03-30 2012-05-16 Dyson Technology Ltd A hand held appliance
GB201205683D0 (en) 2012-03-30 2012-05-16 Dyson Technology Ltd A hand held appliance
GB201205687D0 (en) 2012-03-30 2012-05-16 Dyson Technology Ltd A hand held appliance
CA2878301A1 (fr) 2012-07-04 2014-01-09 Dyson Technology Limited Seche-cheveux
GB2503687B (en) 2012-07-04 2018-02-21 Dyson Technology Ltd An attachment for a hand held appliance
GB2515808B (en) 2013-07-05 2015-12-23 Dyson Technology Ltd A handheld appliance
CN204796990U (zh) 2013-07-05 2015-11-25 戴森技术有限公司 头发护理器具
GB2515811B (en) 2013-07-05 2015-11-11 Dyson Technology Ltd A handheld appliance
GB2515815B (en) 2013-07-05 2015-12-02 Dyson Technology Ltd A hand held appliance
GB2515810B (en) 2013-07-05 2015-11-11 Dyson Technology Ltd A hand held appliance
GB2515816B (en) * 2013-07-05 2015-12-23 Dyson Technology Ltd A hand held appliance
GB2515812B (en) * 2013-07-05 2016-02-03 Dyson Technology Ltd A handheld appliance
GB2531431B (en) 2013-07-24 2016-11-02 Dyson Technology Ltd An attachment for a handheld appliance
GB2518639B (en) 2013-09-26 2016-03-09 Dyson Technology Ltd A hand held appliance
GB2518656B (en) 2013-09-27 2016-04-13 Dyson Technology Ltd Hand held appliance
GB2534379B (en) 2015-01-21 2018-05-09 Dyson Technology Ltd An attachment for a hand held appliance
GB2534378B (en) 2015-01-21 2018-07-25 Dyson Technology Ltd An attachment for a hand held appliance
GB2553508A (en) * 2016-08-30 2018-03-14 Dyson Technology Ltd A handheld appliance
CN109043788A (zh) * 2018-10-31 2018-12-21 舒可士（深圳）科技有限公司 毛发干燥装置
CN109156965A (zh) * 2018-10-31 2019-01-08 舒可士（深圳）科技有限公司 毛发干燥装置
FR3091153B1 (fr) 2018-12-28 2021-10-22 Seb Sa appareil de coiffure avec encapsulage d’un composant électrique ou électronique
CN114027606B (zh) * 2021-12-16 2024-02-06 苏州小枣树网络科技有限公司 一种手持吹风机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980000783A1 (fr) 1978-10-20 1980-05-01 Firth Cleveland Ltd Seche-cheveux
DE2846784C2 (de) * 1978-10-27 1983-01-13 Braun Ag, 6000 Frankfurt Vorrichtung für die Halterung und Zentrierung der Motor-Gebläseeinheit eines Lüfters
US4647757A (en) * 1985-04-30 1987-03-03 Clairol Incorporated Hair dryer heater section providing uniform outlet air temperature distribution

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9420864B2 (en) 2013-07-05 2016-08-23 Dyson Technology Limited Hand held appliance
US9596916B2 (en) 2013-07-05 2017-03-21 Dyson Technologies Limited Hand held appliance
USD715996S1 (en) 2013-09-26 2014-10-21 Dyson Technology Limited Hair dryer
USD715995S1 (en) 2013-09-26 2014-10-21 Dyson Technology Limited Hair dryer
USD716492S1 (en) 2013-09-26 2014-10-28 Dyson Technology Limited Hair dryer
USD791407S1 (en) 2015-01-12 2017-07-04 Dyson Technology Limited Hair appliance
EP4108073A1 (fr) * 2021-06-25 2022-12-28 Yamabiko Corporation Ventilateur à flux axial

Also Published As

Publication number Publication date
EP0306765A1 (fr) 1989-03-15

Similar Documents

Publication Publication Date Title
EP0306765B1 (fr) Sèche-cheveux à main
DE3904860C5 (de) Elektrisch betriebener Handhaartrockner
DE3807287C2 (de) Elektrisch betriebener Handhaartrockner
DE2914853A1 (de) Elektrische kleinmaschine, insbesondere kleinmotor
DE3629634A1 (de) Elektrische maschine, insbesondere elektromotor
DE1917075C3 (de) Elektrischer Stecker
DE3100436A1 (de) Elektrisches geraet mit motorantrieb regelbarer drehzahl, insbesondere handmixer
DE2329104C2 (de) Elektrischer Zeitschalter
EP0920265B1 (fr) Appareil electrique pour le traitement des cheveux
DE3802638C2 (de) Elektrisch betriebener Handhaartrockner
DE4110474A1 (de) Elektromotor
EP0224054B1 (fr) Moteur électrique pour un petit outil électrique
DE3729774A1 (de) Elektrisch betriebener handhaartrockner
DE19950956A1 (de) Elektrischer Speisestromkreis eines Anlassermotors und Kraftfahrzeuganlasser mit integrierter Sicherung und zugehöriger Anlasser
DE2264291B2 (de) Elektrisches Lötgerät
DE60029903T2 (de) Verdrahtungsvorrichtung für Schutzschaltung
EP0129754A1 (fr) Outil électrique à main avec un boîtier divisible
EP0209691B1 (fr) Dispositif d'interconnexion électrique pour postes de travail
EP0688275A1 (fr) Interrupteur sur colonne de direction pour vehicules automobiles
EP0304906A2 (fr) Boîtier de connexion pour plaques électriques de cuisson
DE102004012285A1 (de) Elektromagnetisches Schaltgerät
DE2949432A1 (de) Mehrteilige stecksicherung
EP0105538A1 (fr) Prise de courant ou prise multiple en matière plastique
DE973277C (de) Elektrische Schalteinrichtung fuer elektrische Stromverbraucher
DE696718C (de) Schalter, insbesondere Stufenschalter, fuer zweipolige Reihen-Parallelschaltung von elektrischen Heizgeraeten

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19890210

17Q First examination report despatched

Effective date: 19900802

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT KRUPS GMBH & CO. KG

ITF It: translation for a ep patent filed

Owner name: CALVANI SALVI E VERONELLI S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH FR GB IT LI NL SE

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: BRAUN AG, FRANKFURT

Effective date: 19920828

NLR1 Nl: opposition has been filed with the epo

Opponent name: BRAUN AG, FRANKFURT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930721

Year of fee payment: 6

Ref country code: FR

Payment date: 19930721

Year of fee payment: 6

Ref country code: CH

Payment date: 19930721

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930820

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19930831

Year of fee payment: 6

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT REVOKED

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

27W Patent revoked

Effective date: 19931210

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Free format text: 931210

NLR2 Nl: decision of opposition
EUG Se: european patent has lapsed

Ref document number: 88113689.9

Effective date: 19940504