EP3112517B1 - Von oben zu beladende waschmaschine mit einer trommeltür - Google Patents

Von oben zu beladende waschmaschine mit einer trommeltür Download PDF

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Publication number
EP3112517B1
EP3112517B1 EP15174403.4A EP15174403A EP3112517B1 EP 3112517 B1 EP3112517 B1 EP 3112517B1 EP 15174403 A EP15174403 A EP 15174403A EP 3112517 B1 EP3112517 B1 EP 3112517B1
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EP
European Patent Office
Prior art keywords
drum
door
washing machine
flap
sliding part
Prior art date
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Application number
EP15174403.4A
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English (en)
French (fr)
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EP3112517A1 (de
Inventor
Marco Cagliani
Luca Caruso
Claudio Civanelli
Davide Parachini
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.)
Whirlpool Corp
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Whirlpool Corp
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Publication date
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Priority to EP15174403.4A priority Critical patent/EP3112517B1/de
Publication of EP3112517A1 publication Critical patent/EP3112517A1/de
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Publication of EP3112517B1 publication Critical patent/EP3112517B1/de
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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/10—Doors; Securing means therefor

Definitions

  • the present invention relates to washing machine, particularly a top-loading washer, comprising a tub with an access opening, a perforated drum rotatably mounted within said tub about a horizontal axis and having an aperture on its cylindrical side, a drum door slidably supported by the drum for opening or closing said aperture following a predetermined rotation of the drum, and catching means supported by the tub and configured to selectively engage said slidable drum door in order to open or close it.
  • the automatic opening mechanism of the drum must reflect the same requirements as well.
  • said catching means comprises electromagnets with plungers which cooperate directly with an edge portion of the sliding door, and this solution need a considerable amount of space which reduces the overall capacity of the arrangement tub/drum.
  • EP 0 048 643 A1 discloses a top-loading washing machine in which the drum door is slidably supported by the drum and in which a complex mechanical locking system is used for blocking the door in the closed configuration.
  • EP 1 548 170 A1 discloses a door for a top-loading washing machine having to flaps, a first one being hinged to an edge of the drum opening and a second one hinged to the first flap.
  • JP H01 317488 A discloses a top-loading washing machine according to the preamble of claim 1, where the drum door is slidable so that an aperture part can be opened and closed on the outer circumference of the revolving drum.
  • US 5 437 168 A discloses a top-loading horizontal axis washer with improved accessibility to the wash basket interior.
  • US 2003/061841 A1 discloses a washing machine having a drum opening with a drum door composed of a double door opening frontward and backward.
  • US 2007/227199 A1 discloses a top-loading washing machine with a door locking device which is configured to move relative to the drum and the drum door when the drum is in a fixed position.
  • the drum door comprises a flap hinged to an edge of the aperture of the drum and having first engaging portions configured to cooperate with corresponding second engaging portions of the sliding door.
  • the catching means comprises a rotating member with at least a cam surface configured to cooperate with said flap in order to rotate it, in an opening configuration of the drum door, and to disengage said first engaging portions from said second engaging portions.
  • the catching means comprises at least a linear actuator, for instance a plunger moved by an electric motor, oriented radially with reference to the drum.
  • the solution according to the invention is an automatic system having a high mechanical reliability that, at the end of the washing cycle, is capable of opening the door of the drum without any manual intervention of the user.
  • the drum is already open and allows the user to take out the laundry without the need to open the drum door manually.
  • the drum is already open and it closes automatically when the washing machine is operated.
  • the rotating member presents a first cam surface for acting on the flap in order to rotate it and disengage it from the sliding door and a second cam surface in order to engage a corresponding portion of the sliding drum door in order to keep it in a predetermined position with reference to the tub.
  • the relative movement between the flap and the sliding door in order to disengage them and maintaining the sliding door in a fixed predetermined position during the rotation of the drum (in the opening sequence of the door) is driven by at least one linear actuator.
  • a drum 10 of a top loading washer W comprises a stainless steel cylindrical wrapper 10a provided with a rectangular drum opening 12 provided with a door 14.
  • the drum 10 is rotating within a plastic tub T mounted, with the interposition of known dampers, within a cabinet C.
  • Such cabinet is provided with a lid L for closing the access opening towards the drum 10.
  • the door 14 of the drum 10 comprises a sliding part 14a and a rotating flap 14b whose rotation is allowed only towards the inside of the drum 10 by abutting parts of the drum (not shown).
  • a spring urges the rotating flap 14b towards the position shown in figure 1 .
  • the structural continuity of the drum mantle is guaranteed during the spin extraction by the chain formed by a hinge rod of the rotating flap 14b, the flap 14b itself, hooks 16 of the flap 14b engaging corresponding slots 18 of the sliding part 14a, the sliding part 14a itself and a connecting rod 20 ( figures 1 and 2a ) of the sliding part 14a.
  • a safety device 22 ( figure 4 ) is necessary to prevent accidental openings during the tumbling of the drum (in the spin the centrifugal force is more than enough to prevent the opening) and to ensure a correct closure at the end of the loading / unloading sequence. It is generally done with a specially shaped spring operated pushbutton or lever.
  • the automatic opening system must satisfy the same kind of requirements as the manual system, since it must stand to the same kind of stress. It is so necessary to guarantee the continuity of the structural chain, the safety of the closure and, of course, it has to be completely automatic.
  • the metallic rod 20 (stainless steel typically) is fixed to the drum wrapper 10a, and offers to the sliding part 14a a solid anchor point for several auxiliary hooks 22 ( figure 2b ) formed bending the door metal.
  • hooks 22 in combination with the rod 20, allow the movement of the sliding lid in the direction of the opening, but prevent the movement in the direction of the closure and so the disengagement of the lid from its guides ( figures 2a-2b ).
  • the drum opening 12 is closed and a number of actions must be executed.
  • the drum must be rotated in the correct position with the opening in an upper position, but not yet in the load/unload position. Then, it is necessary to disengage the safety device ( figure 5 ).
  • the relative movement of the drum 10 vis a vis the sliding part 14a causes the opening of the sliding part 14a and the positioning of the drum access, matching the opening of the external lid (not shown) of the washer (upper position).
  • the drum 10 rotates to close the sliding part 14a that is still kept in the same position.
  • a specific upper profile 26 of the sliding part 14a ( figure 7 ) drives the rotating flap 14b to slide below the sliding part 14a.
  • the rotating flap 14b is released and the hooks 16 on it can go inside the slots 18 in the sliding part 14a.
  • the safety device 22 is released and thanks to a spring moves back to the safety position.
  • the sliding part 14a is released and the washer is now ready to start with a new washing cycle.
  • the preferred one implies the use of a rotating member 30 with a complex cam shaft supported by the tub (T) and operated by a motor M.
  • the rotating axis of the rotating member 30 is oriented substantially tangentially with reference to the wrapper 10a of the drum 10. In this way the space dedicated to the rotating member is much smaller when compared to similar device of the prior art.
  • the motor M of the rotating member 30 is controlled in a way that the position is well determined at every relevant step of the correct opening sequence.
  • FIGS 3a-3d there are shown different views the rotating member 30 with the cam set capable to manage the complex of operations necessary to open the drum 10.
  • the cam 30b has an internal profile rather than an external one.
  • the starting position of the opening sequence (after the correct positioning of the drum) is shown in figures 1 and 4 .
  • the opening sequence is as follows: The rotating member 30 starts to rotate and cam 30a pushes down the sliding part 14a and through it also the swiveling flap 14b that is below. This limited rotation of the sliding part 14a is allowed since such part of the door 14 is configured to slide in side guides of side walls of the drum that have a predetermined width larger that the thickness of the sliding part 14a.
  • the cam 30b of the rotating member 30 engages on its inside a protrusion 32 on the sliding part 14a. This will prevent further movement downwards. At the same time, it opens the safety device 22 ( figure 5 ).
  • the drum can be rotated to the load/unload position.
  • the cam 30b keeps firmly in position the sliding part 14a of the drum door 14 allowing the opening of the drum. Now the washer can be unloaded safely.
  • the user loads the washer drum 10 that is in the open status.
  • the drum 10 must be now closed again before starting any other operation of the washing machine.
  • the motor rotates the drum in a direction that is the opposite of the opening direction.
  • a couple of profiles 26 on the rotating flap 14b drives such flap to move down (towards the centre of the drum 10) in a way that allows the correct positioning of the hooks 16 right below the corresponding slots 18 and below the cam 30c ( figure 7 ).
  • the flap 14b is now kept down by the cam 30c.
  • the rotating member 30 rotates in the opposite direction than when opening, making the reverse series of operation.
  • the cam 30c releases the flap 14b, allowing the engagement of the hooks 16, the cam 30b releases the sliding part 14a and the safety device 22, preventing any accidental opening and at last the cam 30a frees the sliding part 14b allowing the normal rotation of the drum so that the washing cycle cab be started.
  • a second embodiment of the invention in which a couple of linear actuators are used, driving a couple of rods, mounted in radial direction with reference to the drum.
  • FIGs 8 and 9 show the structure of the solution with two linear actuators 50 which are supported by the tub T.
  • Each actuator 50 comprises an electric motor which, by means of a gear, drives a plunger 50a or 50b.
  • the plunger 50a is placed on a side of the cylindrical wall of the drum 10 and is passing in an opening provided in the sliding part 14a of the door 14.
  • the plunger 50b is placed centrally with reference to said cylindrical wall, and is passing in another opening of the sliding part 14a.
  • the construction of the actuators 50 is compact if compared to linear actuators of prior art.
  • the opening sequence, according to this solution is the following.
  • the plunger 50b is operated and enters in the opening of the sliding part 14a of the door 14, in order to release the safety device.
  • the plunger 50b continues its travel, pushing down the two parts of the door, i.e. the sliding part 14a and the rotating flap 14b. This extra run is necessary because (as in the case of the cams described with reference to the first embodiment) is the only way to allow the disengagement of the hooks 16 of the swiveling flap 14b from the slots 18 of the sliding part 14a.
  • the plunger 50a is sequentially operated and, passing through the respective hole in the sliding part, pushes down furthermore the swiveling flap 14b, disengaging the hooks 16. Then the drum 10 starts to rotate, while the rod 50b keeps in place the sliding part 14a preventing its rotation an causing the opening of the drum.
  • the plunger 50a (now useless) is then immediately moved up to allow the free rotation of the drum 10 until a specific recess is positioned exactly below it. Once the drum reaches the position of the maximum opening, the motor of the washing machine is stopped and the plunger 50a is operated again. It reaches, passing through the hole of the sliding lid 14a, a recess in the drum structure (not shown) preventing any further rotation of the drum 10 and allowing the safe loading and / or unloading of the clothes. Once the loading of the washer is completed, in order to execute the washing cycle the drum 10 must be closed. First, the plunger 50a is lifted, disengaging the drum 10 and allowing its rotation. The drum then starts to rotate in order to close the sliding door 14. The sliding part 14a of the door 14 is still kept in position by the plunger 50b. The plunger 50b keeps also open the safety device.
  • the plunger 50a Since the plunger 50a is not in position to keep down the swiveling lid 14 b, thanks to a couple of springs the swiveling lid, once reached the final position, is pushed up and allows its hooks 16 to engage the corresponding slots 18 on the sliding part 14a of the door 14. The plunger 50b is then lifted, releasing the safety device, allowing the safe closure of the drum 10 and allowing the execution of the washing cycle.
  • Advantages of such embodiment are the possibility to adjust for tolerances in the assembling by biasing the position of the plunger 50a, 50b with the control and the possibility to apply such solution on both belt driven and direct drive driving system for the drum rotation.
  • actuators 50 are compact and are completely hidden, so they do not interfere with the tub and drum openings.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Claims (10)

  1. Von oben zu beladende Waschmaschine, umfassend eine Wanne (T), eine perforierte Trommel (10), die in der Wanne (T) um eine horizontale Achse drehend montiert ist und eine Öffnung (12) an ihrer zylindrischen Seite (10a) aufweist, eine Trommeltür (14, 14a), die zum Öffnen und Schließen der Öffnung (12) nach einer vorbestimmten Drehung der Trommel (10) gleitend von der Trommel (10) getragen wird, Fangmittel (30, 50), die von der Wanne (T) getragen werden und ausgebildet sind, selektiv mit der gleitenden Tür (14a) zu deren Öffnen und Schließen in Eingriff zu gelangen, dadurch gekennzeichnet, dass die Trommel (10) eine Klappe (14b) umfasst, die an einen Rand der Öffnung (12) der Trommel (10) angelenkt ist und erste Eingriffsabschnitte (16) umfasst, die ausgebildet sind, mit zweiten Eingriffsabschnitten (18) des gleitenden Teils (14a) zusammenzuwirken, wobei die Fangmittel (30, 50) auch ausgebildet sind, mit der Klappe (14b) zusammenzuwirken, um diese von dem gleitenden Teil (14a) zu befreien.
  2. Waschmaschine nach Anspruch 1, wobei die ersten Eingriffsabschnitte als Haken (16) geformt sind, deren Enden zu der Außenseite der Trommel (10) orientiert sind, wobei die zweiten Eingriffsabschnitte als Schlitze (18) geformt sind, die angrenzend an Rand des gleitenden Teils (14a) platziert sind.
  3. Waschmaschine nach Anspruch 1 oder 2, wobei die Fangmittel ein drehendes Element (30) mit mindestens einer Nockenfläche (30a, 30b, 30c) umfassen, das ausgebildet ist, mit der Klappe (14b) zusammenzuwirken, um diese zu drehen und die ersten Eingriffsabschnitte (16) von den zweiten Eingriffsabschnitten (18) zu trennen.
  4. Waschmaschine nach Anspruch 3, wobei das drehende Element (30) eine erste Nockenfläche (30a, 30c) präsentiert, die ausgebildet ist, mit der Klappe (14b) zum Antreiben ihrer Drehung zur Innenseite der Trommel (10) zusammenzuwirken, und eine zweite Nockenfläche (30b), die ausgebildet ist, mit einem entsprechenden Abschnitt (32) der gleitenden Tür (14a) zusammenzuwirken, um diesen während Öffnen und Schließen der Tür (14, 14a, 14b) in einer festgesetzten Position zu halten.
  5. Waschmaschine nach Anspruch 4, wobei die zweite Nockenfläche (30b) ausgebildet ist, einen Sicherheitsriegel (22) der Trommeltür (14, 14a, 14b) anzutreiben.
  6. Waschmaschine nach Anspruch 1 oder 2, wobei die Fanmittel mindestens ein lineares Stellglied (50, 50a, 50b) umfassen, das ausgebildet ist, auf die Klappe (14b) zu wirken, um diese zu drehen und mit einer Öffnung in dem gleitenden Teil (14a) zusammenzuwirken, um dieses während des Öffnens der Trommeltür (14, 14a) in einer vorbestimmten Position zu halten.
  7. Waschmaschine nach Anspruch 6, wobei sie zwei lineare Stellglieder (50a, 50b) umfasst, von welchen eines (50b) ausgebildet ist, mit einem Sicherheitsriegel (22) der Trommeltür (14, 14a, 14b) zusammenzuwirken und das gleitende Teil (14a) während der Öffnungssequenz der Tür in einer vorbestimmten Position zu halten, wobei das zweite (50a) ausgebildet ist, eine Trennung zwischen dem gleitenden Teil (14a) und der drehenden Klappe (14b) zu ermöglichen.
  8. Waschmaschine nach Anspruch 6 oder 7, wobei jedes Stellglied (50) einen Elektromotor umfasst, der ein Getriebe zum Bewegen des Kolbens (50a, 50b) antreibt.
  9. Waschmaschine nach einem der vorstehenden Ansprüche, wobei die Klappe (14b) eine erste Position, in der sie im Wesentlichen mit der Trommel (10, 10a) bündig ist, und eine zweite Position, in der sie zur Innenseite der Trommel (10) gedreht ist, einnehmen kann.
  10. Waschmaschine nach einem der vorstehenden Ansprüche, wobei die Klappe (14b) an ihrer Oberfläche, die zur Außenseite der Trommel (10) zeigt, mindestens ein Nockenprofil (26) präsentiert, das ausgebildet ist, mit der gleitenden Tür (14a) während ihrer Schließbewegung zusammenzuwirken, um teilweise unter eine solche gleitende Tür (14a) zu gehen.
EP15174403.4A 2015-06-29 2015-06-29 Von oben zu beladende waschmaschine mit einer trommeltür Active EP3112517B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15174403.4A EP3112517B1 (de) 2015-06-29 2015-06-29 Von oben zu beladende waschmaschine mit einer trommeltür

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Application Number Priority Date Filing Date Title
EP15174403.4A EP3112517B1 (de) 2015-06-29 2015-06-29 Von oben zu beladende waschmaschine mit einer trommeltür

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EP3112517A1 EP3112517A1 (de) 2017-01-04
EP3112517B1 true EP3112517B1 (de) 2021-09-22

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110195316B (zh) * 2018-02-26 2021-07-06 重庆海尔洗衣机有限公司 顶开式衣物处理设备及其内筒盖操作系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2490689A1 (fr) * 1980-09-19 1982-03-26 Thomson Brandt Dispositif d'immobilisation temporaire d'un tambour de machine a laver le linge
JPH07100104B2 (ja) * 1988-03-03 1995-11-01 三菱電機株式会社 回転ドラムの扉開閉装置
US5437168A (en) * 1994-05-02 1995-08-01 Whirlpool Corporation Top loading horizontal axis automatic washer
FR2751669B1 (fr) 1996-07-26 1998-08-28 Ciapem Machine a laver ou secher le linge a chargement par le dessus a ouverture et fermeture automatique du tambour
US7073356B2 (en) * 2001-09-28 2006-07-11 Sanyo Electric Co., Ltd. Drum type washing machine
DE10316696A1 (de) 2003-04-10 2004-10-28 Herbert Kannegiesser Gmbh Vorrichtung zur Behandlung von Wäsche, insbesondere Waschschleudermaschine
JP3776908B2 (ja) * 2003-11-28 2006-05-24 株式会社東芝 ドラム式洗濯機
FR2864114B1 (fr) * 2003-12-22 2006-04-21 Brandt Ind Porte de tambour rotatif, notamment pour machine a laver et ou secher le linge
KR100762143B1 (ko) * 2006-03-29 2007-10-02 엘지전자 주식회사 드럼 세탁기의 드럼

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Publication number Publication date
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