EP1403415B1 - Dispositif pour l'extraction automatique d'un tiroir à détergents pour un appareil électrique domestique, en particulier une machine à laver et un appareil domestique équipé avec un tel dispositif - Google Patents

Dispositif pour l'extraction automatique d'un tiroir à détergents pour un appareil électrique domestique, en particulier une machine à laver et un appareil domestique équipé avec un tel dispositif Download PDF

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Publication number
EP1403415B1
EP1403415B1 EP03021226A EP03021226A EP1403415B1 EP 1403415 B1 EP1403415 B1 EP 1403415B1 EP 03021226 A EP03021226 A EP 03021226A EP 03021226 A EP03021226 A EP 03021226A EP 1403415 B1 EP1403415 B1 EP 1403415B1
Authority
EP
European Patent Office
Prior art keywords
drawer
gear
seat
casing
shell
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
EP03021226A
Other languages
German (de)
English (en)
Other versions
EP1403415A3 (fr
EP1403415A2 (fr
Inventor
Dino Chirumbolo
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.)
ITW Industrial Components SRL
Original Assignee
ITW Industrial Components SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ITW Industrial Components SRL filed Critical ITW Industrial Components SRL
Publication of EP1403415A2 publication Critical patent/EP1403415A2/fr
Publication of EP1403415A3 publication Critical patent/EP1403415A3/fr
Application granted granted Critical
Publication of EP1403415B1 publication Critical patent/EP1403415B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/02—Devices for adding soap or other washing agents

Definitions

  • the present invention relates to a device for automatically extracting a drawer, in particular a detergent and/or other process fluid dispenser drawer of an electric household appliance, in particular a washing machine; and to an electric household appliance featuring such a device.
  • washing machines and other electric household appliances employ detergents and other additives, such as softeners, bleach, etc., which are loaded into a dispenser drawer housed and sliding inside a seat formed on the front panel of the machine.
  • the drawer can be slid manually by the user from a withdrawn position inside the seat, to an extracted position in which it projects from the seat, so that the detergent (liquid or powdered) and other additives or process fluids can be loaded into the drawer from the outside.
  • the drawer is then pushed by the user back into the withdrawn position inside the seat, where it is suspended over the draw tank to draw out the detergent/additives when required by means of a stream of water.
  • a device for automatically extracting a drawer which slides inside a seat between an extracted position, in which the drawer projects from the seat, and a withdrawn position, in which the drawer is housed inside the seat, substantially flush with a mouth of the seat; said drawer being, in particular, a drawer for dispensing process fluids of an electric household appliance; and the device comprising a release device; elastic means for pushing the drawer from the withdrawn position to the extracted position; and decelerating means for opposing the sliding movement of the drawer inside the seat; the device having the features as claimed in Claim 1.
  • the release device is preferably a push-push type.
  • the drawer is slowly opened automatically by the user simply pressing lightly on the front panel, and is closed by pushing it, again from the front, inside the seat in opposition to the elastic opening means, to engage the release device in a lock configuration which keeps the drawer closed in the correct position.
  • the closing movement is guided by the motion transmission device used to open the drawer automatically, thus also preventing the drawer from jamming when being closed; and the user is prevented from exceeding the established limit positions, which are controlled by the limit stops of the push-push release device.
  • number 1 indicates as a whole an electric household appliance - in the example shown, a washing machine - equipped with a device 2 for automatically extracting a dispenser drawer 3 from a seat 4.
  • drawer 3 is a drawer for dispensing detergent and other process fluids (softener, bleach, etc.), and which is extracted for loading from seat 4 through a mouth 5 of seat 4 formed on a front panel 7 of machine 1.
  • seat 4 has a known draw tank 6, by which the detergent and other washing additives are drawn, in use, from separate known compartments (not shown for the sake of simplicity) of drawer 3 by a stream of water.
  • drawer 3 slides inside seat 4 between an extracted position (not shown), in which it projects from seat 4 and front panel 7, and a withdrawn position ( Figure 4 ) in which drawer 3 is housed inside seat 4, substantially flush with mouth 5 and over tank 6.
  • Device 2 comprises a release device 10, shown partly in Figure 1 ; elastic means 11 for pushing drawer 3 from the withdrawn position to the extracted position; and decelerating means 12 for opposing the sliding movement of drawer 3 inside seat 4.
  • device 2 also comprises a reversible rotary-to-linear motion conversion device 14, and is designed so that elastic means 11 and decelerating means 12 both act, directly or indirectly, on a rotary member 15 of device 14; and device 14 is located between drawer 3 and a fixed member of seat 4, defined by tank 6, so that movement of drawer 3 from the extracted position to the withdrawn position always takes place in opposition to elastic means 11, whereas operation of release device 10 produces, as described later, a linear movement of drawer 3 from the withdrawn position to the extracted position as a consequence of the action of elastic means 11.
  • reversible rotary-to-linear motion conversion device 14 is a rack-and-pinion mechanism
  • rotary member 15 is defined by a gear housed for rotation inside a casing 16 ( Figures 2 and 3 ) and which meshes with a rack 18, outside casing 16, through a window 19 formed through casing 16.
  • casing 16 is integral with tank 6, in which it is housed just beneath drawer 3 and close to mouth 5, while rack 18 is integral with and located beneath drawer 3.
  • the above arrangement may be inverted, so that rack 18 is integral with tank 6 and located beneath drawer 3, which is fitted integrally underneath with casing 16.
  • gear 15 meshes with rack 18, and is integral with a member other than that supporting rack 18.
  • Casing 16 comprises two half-shells 20, 21, at least one of which (in the example shown, both) is cup-shaped.
  • Gear 15 is fitted idly to half-shell 20, is mounted to project towards half-shell 21 by means of a cylindrical shaft 23 ( Figure 3 ) engaging a seat 24 formed on the concave side of half-shell 20, and comprises a cup-shaped body 25 having an inner concavity 26 facing half-shell 21 in use.
  • a number of pins 27, arranged in a ring project from half-shell 21 towards half-shell 20 and inside concavity 26 of gear 15 when half-shells 20 and 21 are assembled.
  • Half-shell 21 is preferably also provided, radially outwards of pins 27, with a collar 29, which, in use, penetrates concavity 26 and acts, when necessary, as a support and/or guide for gear 15, which is otherwise mounted to project freely.
  • Elastic means 11 comprise a helical spring packed between half-shell 21 and concavity 26 of gear 15, and housed entirely inside concavity 26.
  • Spring 11 comprises a first end 31 engaging and angularly integral with gear 15; and a second end 32 which, when half-shells 20 and 21 are assembled, engages one of pins 27 so as to be angularly integral with casing 16.
  • spring 11 is fitted to a hub 33 ( Figure 3 ) coaxial with the axis of rotation of gear 15, and which projects inside concavity 26, on the opposite side to half-shell 20, and is substantially defined by an extension of shaft 23 inside concavity 26.
  • Hub 33 has a diametrical slot 34 engaged by end 31 of the spring, which is bent radially towards the axis of symmetry of spring 11.
  • Decelerating means 12 are defined by a known rotary oil-bath decelerator comprising a fluidtight body 42 filled with silicone oil and fixed integrally inside casing 16, beneath gear 15 (and therefore on the opposite side to window 19); and a rotary member 43 ( Figure 3 ), which rotates with a high degree of resistance inside the oil in body 42, and projects in fluidtight manner from one side of body 42.
  • rotary member 43 is connected to mesh indirectly with gear 15 by means of a toothed transmission comprising a pinion 44 fitted angularly integral to rotary member 43 and meshing with a pinion 45 formed in one piece with body 25, on the opposite side to concavity 26, and angularly integral with shaft 23. Consequently, since pinion 45 is much smaller than gear 15, the number of revolutions of gear 15 is also reduced with respect to those of rotary member 43.
  • Release device 10 is located close to mouth 5, acts directly on drawer 3 according to one aspect of the invention, and is preferably a push-push type.
  • release device 10 comprises a block 50, a bottom face of which supports a positive track 51 formed, according to a further aspect of the invention, in one plane; and a pin 52 supported by a leaf spring 53, which is flexible in a plane perpendicular to the axis of pin 52 and parallel to the single plane of positive track 51.
  • Leaf spring 53 is carried integrally in one piece with casing 16, and projects from casing 16 towards mouth 5 of seat 4; and positive track 51 is integral with rack 18, block 50 being fixed, together with rack 18, to a bottom face of drawer 3, close to a front surface of drawer 3 which is substantially flush with front panel 7 when drawer 3 is in the withdrawn position inside sear 4.
  • Single-plane positive track 51 comprises ( Figure 1 ) two branches 61, 62; a tooth 63; and an inclined stop surface 64 opposite tooth 63 and between branches 61 and 62.
  • drawer 3 is arrested in the desired extracted position.
  • the user simply pushes once more on the front surface of the drawer to push the drawer back into the withdrawn position inside seat 4.
  • the inverse movement of drawer 3 produced manually by the user rotates gear 15 by means of rack 18 to overcome the resistance of, and again begin preloading, spring 11, end 32 of which is locked angularly integral with stationary casing 16, and end 31 of which rotates together with gear 15 to twist and so preload spring 11.
  • pin 52 moves relatively, in the opposite direction to before, along branch 62 which is inclined, to which pin 52 is transferred by the springback of leaf spring 53 at the end of the extraction travel of drawer 3, as soon as pin 52 disengages branch 61.
  • branch 62 Given the slope of branch 62, the above movement flexes leaf spring 53 laterally in the opposite direction to before, so that, as soon as pin 52 disengages branch 62 as drawer 3 reaches the withdrawn position, pin 52 clicks onto tooth 63 to lock drawer 3 in the withdrawn position in opposition to the now fully preloaded spring 11.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Drawers Of Furniture (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (11)

  1. Dispositif (2) pour extraire automatiquement un tiroir (3) qui glisse à l'intérieur d'un siège (4) entre une position sortie dans laquelle le tiroir fait saillie hors du siège, et une position rentrée dans laquelle le tiroir est logé dans le siège, substantiellement en alignement avec une embouchure (5) du siège ; ledit tiroir étant, en particulier, un tiroir pour distribuer des fluides de traitement d'un appareil ménager électrique (1) ; et le dispositif comprenant un dispositif de libération (10) ; des moyens élastiques (11) pour pousser le tiroir de la position rentrée dans la position sortie ; et des moyens de décélération (12) pour s'opposer au mouvement de glissement du tiroir à l'intérieur du siège ; ledit dispositif comprenant également un dispositif de conversion de mouvement réversible rotatif à linéaire (14) ; lesdits moyens élastiques et lesdits moyens de décélération agissant sur un organe rotatif (15) dudit dispositif de conversion de mouvement réversible rotatif à linéaire ; et le dispositif de conversion de mouvement réversible rotatif à linéaire étant situé entre ledit tiroir et un organe fixe (6) dudit siège, de sorte que le mouvement du tiroir de la position sortie dans la position rentrée ait lieu en opposition auxdits moyens élastiques (11), tandis que le fonctionnement dudit dispositif de libération produit un mouvement linéaire du tiroir de la position rentrée dans la position sortie en conséquence de l'action desdits moyens élastiques ; ledit dispositif de conversion de mouvement réversible rotatif à linéaire (14) étant un mécanisme à crémaillère ; ledit organe rotatif étant défini par un engrenage (15) reçu à rotation à l'intérieur d'un boîtier (16) et s'engrenant avec une crémaillère (18), en dehors du boîtier, à travers une fenêtre (19) formée à travers le boîtier (16) ; ledit boîtier (16) comprenant deux demi-coquilles (20, 21), au moins l'une d'entre elles étant en forme de coupe ; une première demi-coquille (20) supportant librement ledit engrenage (15), qui est monté de manière à faire saillie vers la deuxième demi-coquille (21),
    caractérisé en ce que, en combinaison :
    - ledit engrenage (15) comprend un corps en forme de coupe (25) ayant une concavité interne (26) en regard de la deuxième demi-coquille (21), lesdits moyens élastiques (11) comprenant un ressort hélicoïdal comprimé entre ladite deuxième demi-coquille (21) et ladite concavité (26) de l'engrenage (15), et logé entièrement à l'intérieur de la concavité (26) ;
    - ledit moyen de décélération (12) est constitué d'un décélérateur à bain d'huile rotatif comprenant un corps étanche aux fluides (42) rempli d'huile de silicone et fixé intégralement à l'intérieur dudit boîtier (16), en dessous dudit engrenage (15), et d'un organe rotatif (43) tournant avec un haut degré de résistance à l'intérieur de l'huile et faisant saillie de manière étanche aux fluides depuis un côté dudit corps étanche aux fluides (42) ; ledit organe rotatif (43) dudit moyen de décélération (12) étant connecté de manière à s'engrener indirectement avec ledit engrenage (15) au moyen d'une transmission dentée comprenant un pignon (44) ajusté angulairement et intégré à l'organe rotatif (43) et s'engrenant avec un pignon (45) formé d'une seule pièce avec ledit corps en forme de coupe (25) dudit engrenage (15), sur le côté opposé à ladite concavité (26) .
  2. Dispositif selon la revendication 1, caractérisé en ce que ledit boîtier (16) est porté intégralement par ledit organe fixe (6) dudit siège, et ladite crémaillère (18) est portée intégralement par et en dessous dudit tiroir (3), ou vice versa.
  3. Dispositif selon la revendication 2, caractérisé en ce que la deuxième demi-coquille (21) présente, en saillie vers ladite première demi-coquille (20), un certain nombre de goupilles (27) agencées en anneau, et qui font saillie à l'intérieur de ladite concavité (26) de l'engrenage (15) quand les demi-coquilles (20, 21) sont assemblées.
  4. Dispositif selon la revendication 3, caractérisé en ce que ledit ressort (11) a une première extrémité (31) s'engageant et intégrée angulairement avec l'engrenage (15), et une deuxième extrémité (32) s'engageant avec l'une desdites goupilles (27), quand les demi-coquilles (20, 21) sont assemblées, de manière à être intégré angulairement avec le boîtier (16).
  5. Dispositif selon la revendication 4, caractérisé en ce que ledit ressort (11) est ajusté à un moyeu (33) coaxial à l'axe de rotation dudit engrenage (15) et saillant à l'intérieur de ladite concavité (26) de l'engrenage, sur le côté opposé à ladite première demi-coquille (20) ; le moyeu (33) ayant une fente (34) avec laquelle s'engage ladite première extrémité (31) du ressort (11), qui est recourbée radialement vers l'axe de symétrie du ressort (11).
  6. Dispositif selon l'une quelconque des revendications 2 à 5, caractérisé en ce que lesdites demi-coquilles (20, 21) s'encliquètent l'une à l'autre.
  7. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit dispositif de libération (10) est situé près de ladite embouchure (5), et agit directement sur ledit tiroir (3) .
  8. Dispositif selon la revendication 7, caractérisé en ce que ledit dispositif de libération (10) est d'un type pousse-pousse.
  9. Dispositif selon la revendication 8, caractérisé en ce que ledit dispositif de libération (10) comprend un chemin positif (51) formé dans un plan ; et une goupille (52) portée par un ressort à lame (53) flexible dans un plan perpendiculaire à ladite goupille (52) et parallèle audit plan du chemin positif (51).
  10. Dispositif selon la revendication 9, caractérisé en ce que ledit ressort à lame (53) est porté intégralement d'une seule pièce avec ledit boîtier (16), et ledit chemin positif (51) est intégré à ladite crémaillère (18).
  11. Appareil ménager électrique (1), en particulier une machine à laver le linge, caractérisé en ce qu'il comprend un dispositif (2) pour extraire automatiquement un tiroir (3) qui glisse à l'intérieur d'un siège (4), selon la revendication 1, ledit tiroir (3) étant un tiroir de distribution de détergent, et ledit organe fixe dudit siège (4) étant un réservoir extractible de détergent (6).
EP03021226A 2002-09-19 2003-09-18 Dispositif pour l'extraction automatique d'un tiroir à détergents pour un appareil électrique domestique, en particulier une machine à laver et un appareil domestique équipé avec un tel dispositif Expired - Lifetime EP1403415B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000813A ITTO20020813A1 (it) 2002-09-19 2002-09-19 Dispositivo per l'estrazione automatica di un cassetto, in particolare un cassetto erogatore di un elettrodomestico quale una lavatrice, ed elettrodomestico utilizzante lo stesso.
ITTO20020813 2002-09-19

Publications (3)

Publication Number Publication Date
EP1403415A2 EP1403415A2 (fr) 2004-03-31
EP1403415A3 EP1403415A3 (fr) 2004-11-17
EP1403415B1 true EP1403415B1 (fr) 2010-06-09

Family

ID=31972232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03021226A Expired - Lifetime EP1403415B1 (fr) 2002-09-19 2003-09-18 Dispositif pour l'extraction automatique d'un tiroir à détergents pour un appareil électrique domestique, en particulier une machine à laver et un appareil domestique équipé avec un tel dispositif

Country Status (4)

Country Link
EP (1) EP1403415B1 (fr)
DE (1) DE60332903D1 (fr)
ES (1) ES2346416T3 (fr)
IT (1) ITTO20020813A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI21804A (sl) * 2004-05-06 2005-12-31 Gorenje D.D. Dozirna posoda pralnih sredstev pralnega stroja
EP1683903B1 (fr) * 2005-01-20 2012-03-07 Candy S.p.A. Distributeur de détergent pour machines à laver
ITTO20050332A1 (it) * 2005-05-17 2006-11-18 Itw Ind Components Srl Dispositivo perfezionato per l'estrazione automatica di un cassetto, in particolare un cassetto erogatore di un elettrodomestico quale una lavatrice
DE102005038727A1 (de) 2005-08-15 2007-02-22 Miele & Cie. Kg Waschmaschine mit Waschmittel- und Spülmittelschublade mit die Schliess- oder Öffnungsbewegung unterstützenden Mitteln
KR101311448B1 (ko) * 2006-09-25 2013-09-25 엘지전자 주식회사 세탁기
KR20080030139A (ko) * 2006-09-29 2008-04-04 엘지전자 주식회사 세탁기
KR101290374B1 (ko) * 2006-12-14 2013-07-26 엘지전자 주식회사 드로어 어셈블리
US20100275659A1 (en) * 2006-12-14 2010-11-04 Lg Electronics Inc. Washing machine and drawer assembly thereof
KR101364867B1 (ko) * 2006-12-14 2014-02-20 엘지전자 주식회사 드로어 어셈블리
KR101290470B1 (ko) * 2006-12-14 2013-07-26 엘지전자 주식회사 드로어 어셈블리
KR101290466B1 (ko) * 2006-12-14 2013-07-26 엘지전자 주식회사 드로어 어셈블리 및 이를 포함하는 세탁기
KR101290355B1 (ko) * 2006-12-14 2013-07-26 엘지전자 주식회사 드로어 어셈블리
EP2381027B1 (fr) * 2007-06-12 2015-09-16 Electrolux Home Products Corporation N.V. Distributeur de produits détergents et similaires de lave-linge
KR101307735B1 (ko) 2009-06-03 2013-09-11 엘지전자 주식회사 냉장고
DE202012104492U1 (de) * 2012-11-20 2014-02-25 Pas Deutschland Gmbh Waschmittelschublade
EP3067458B1 (fr) * 2015-03-13 2018-09-05 Wuxi Little Swan Co., Ltd. Ensemble boîte de détergent pour machine à laver et machine à laver
EP3269870B1 (fr) * 2015-03-13 2020-07-22 Wuxi Little Swan Electric Co., Ltd. Ensemble récipient de détergent pour machine à laver et machine à laver le comprenant
DE202015104215U1 (de) * 2015-08-11 2016-11-14 Pas Deutschland Gmbh Schubladenanordnung für eine Waschmaschine
CN108035121B (zh) * 2018-01-04 2024-01-05 南京贝奇工业设计有限公司 一种用于洗衣机的自动抽屉盒及其控制方法

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US4494806A (en) * 1983-05-13 1985-01-22 Leslie Metal Arts Company Spring loaded drawer assembly with mechanical damping
JPS6178980A (ja) * 1984-09-26 1986-04-22 株式会社　ニフコ 引出体の引出し装置
KR0149912B1 (ko) * 1995-06-14 1999-05-15 김광호 세탁기의 세제용해장치

Also Published As

Publication number Publication date
DE60332903D1 (de) 2010-07-22
ITTO20020813A1 (it) 2004-03-20
EP1403415A3 (fr) 2004-11-17
ES2346416T3 (es) 2010-10-15
EP1403415A2 (fr) 2004-03-31

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