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WO2016050310A1 - Machine à laver/sécher le linge ayant un mécanisme de verrouillage amélioré - Google Patents

Machine à laver/sécher le linge ayant un mécanisme de verrouillage amélioré Download PDF

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Publication number
WO2016050310A1
WO2016050310A1 PCT/EP2014/071171 EP2014071171W WO2016050310A1 WO 2016050310 A1 WO2016050310 A1 WO 2016050310A1 EP 2014071171 W EP2014071171 W EP 2014071171W WO 2016050310 A1 WO2016050310 A1 WO 2016050310A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking arm
safety latch
recess
front door
engagement head
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.)
Ceased
Application number
PCT/EP2014/071171
Other languages
English (en)
Inventor
Salih YILDIRIM
Bugra CETINKAYA
Selahattin CORAK
Ergin METIN
Arcan OZCETIN
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Priority to PCT/EP2014/071171 priority Critical patent/WO2016050310A1/fr
Publication of WO2016050310A1 publication Critical patent/WO2016050310A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door
    • 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 
    • D06F39/12—Casings; Tubs
    • D06F39/14—Doors or covers; Securing means therefor

Definitions

  • the present invention relates to a laundry washing/drying machine comprising a front door having a mechanically improved front door locking mechanism.
  • the laundry washing/drying appliances such as washing machines comprise a rotary drum in which cloth items are placeable and accessible via a front door.
  • An electric motor provides the rotary drum to be driven by means of a pulley mechanism.
  • Laundry washing/drying machines have front doors typically allowing access into the rotary drum for loading and unloading the laundry to be processed.
  • a front door locking mechanism typically functions in the manner that a handle associated with a handle lever is rotatable to drive a hook lever, the latter being actuatable to lock or unlock the front door.
  • the handle lever and the hook lever therefore cooperate to initiate the proper positioning of the mechanical components such that an engagement end of the hook lever is displaced a certain distance to engage into or to be released from a locking slot.
  • a problem associated with the above-described mechanical design lies in that while a given user attempts to lock the front door of the laundry washing/drying machine by way of closing the same relative to the door opening, he/she may experience that although the front door is forced in the closing and locking direction, the door remains unlocked. In other words, it might occur that although sufficient pressure is applied, an engagement head of the lock mechanism cannot be urged into mating relation with a respective locking recess. This problem may typically lead to exertion of excessive force to cause breaking of the handle or handle cover. This might particularly occur if one persistently applies pressure under the mistaken impression that the engagement head can be further moved and locking can be as such effectuated. The situation will in the least cause non-initiation of the laundry washing/drying operation as the secured position of the engagement end cannot be ensured by the electronic control unit.
  • the present invention therefore proposes an arrangement according to which the engagement end can be locked when it is advanced to the appropriate locking position.
  • a prior art publication in the technical field of the present invention may be referred to as EP2369050 among others, the document disclosing a door-locking device, comprising a frame provided with an opening wherein a hook associated with a door of a washing machine or of an electric household appliance in general can introduce and engage with the frame when the door is closed.
  • a locking pawl can take a first position wherein it is withdrawn preventing supply of the household appliance and a second position wherein it is extracted, permitting supply of the household appliance.
  • a moving slider is arranged within the frame, the slider having a first slot suitable to interact with the hook, a second slot with which the locking pawl can be engaged in the second position, when the slider is in the locking position to keep the hook engaged with the frame by the first slot and when the door is closed.
  • the door-locking device further comprises safety means provided with control means provided with control means, the safety means being suitable to interact with the slider to control its position.
  • the present invention provides an arrangement in relation to laundry washing/drying machines having an improved front door opening mechanism, as defined by the characterizing features in Claim 1.
  • Primary object of the present invention is hence to provide a laundry washing/drying machine with a front door locking mechanism which can effectively be locked and unlocked without exerting pressure.
  • the present invention proposes a laundry washing/drying machine with a locking mechanism having an engagement head structurally configured to advance a locking arm by a recess contact portion projecting against lateral walls of a locking arm recess in the engaged state of the engagement head with a safety latch.
  • the projecting recess contact portion is adapted to project perpendicular to the lateral walls of the locking arm recess and formed to protrude from a line projected from or intersecting with a safety latch contact surface between the engagement head and the safety latch in the engaged state of the two.
  • Fig. 1 demonstrates a general perspective view of a laundry washing/drying machine with a front door.
  • Fig. 2 demonstrates a general perspective view of the laundry washing/drying machine with the front door being opened.
  • Fig. 3a partially demonstrates a front view of the laundry washing/drying machine and Fig. 3b demonstrates a cross-sectional view taken along line A-A in Fig. 3a according to the present invention.
  • Fig. 4 demonstrates an enlarged view of detail X given in Fig. 3b while a handle is rotated to drive a hook lever.
  • Fig. 5 demonstrates an enlarged view of detail X given in Fig. 3b while the hook lever is driven to engage with a safety latch.
  • Fig. 6 demonstrates an enlarged view of detail X given in Fig. 3b while the hook lever is driven to engage with the safety latch but a locking arm fails to reach its locking position.
  • Fig. 7 demonstrates an enlarged view of detail X given in Fig. 3b while the hook lever is driven to engage with the safety latch and the locking arm’s locking position is reached according to the present invention.
  • Fig. 8 demonstrates an enlarged view of detail X given in Fig. 3b while the structure of the engagement head is comparatively illustrated according to the present invention.
  • Fig. 9 demonstrates an enlarged view of detail X given in Fig. 3b while the handle is rotated to drive the hook lever where the engagement head can enter into the locking arm recess due to its narrowed neck portion according to the present invention.
  • the present invention relates to a laundry washing/drying machine (1) such as a washing machine comprising a rotary drum, in which the laundry is to be placed and an electric motor rotating the drum.
  • a front door (3) typically allows access into the drum for loading or unloading laundry through an access opening (2).
  • the front door (3) of the laundry washing/drying machine (1) is conventionally openable around a door hinge (5) and a lock mechanism (6) releasably urges an engagement head (11) into a locked position.
  • a handle (7) is provided such that rotation thereof around a handle pivot pin (not shown) drives a hook lever (9), the latter being rotatable around a hook pivot pin (10) and actuatable to lock or unlock the front door (3).
  • the handle (7) and the hook lever (9) therefore cooperate to effect locking and unlocking of the front door (3).
  • the handle (7) displaces relative to a handle cover (8) while the latter is fixedly attached to main body (4) of the front door (3) in the manner to be covering the handle (7).
  • the amount of displacement of the handle (7) or the angle swept by the same relative to the handle cover (8) determines the amount of rotation of the hook lever (9) to effectuate engagement and disengagement of the locking member, i.e. the engagement head (11) in a proper manner as will be delineated hereinafter.
  • the present invention alternatively provides that the engagement head’s (11) improved structure ensures correct positioning of the locking arm (14) without changing the amount of displacement of the handle (7) or the angle swept by the same relative to the handle cover (8) as well as the amount of rotation of the hook lever (9). Therefore, the present invention efficiently ensures lockability with minimal need for mechanical redesign.
  • the engagement head (11) is structurally configured to maintain an enlarged recess contact portion (16) contact with an inner wall portion of the locking arm recess (15) in its engaged state with the safety latch (12).
  • the engagement head (11) is provided with the recess contact portion (16) projecting along the longitudinal axis of the locking arm (14) in the engaged state of the engagement head (11) with the safety latch (12).
  • the protruding recess contact portion (16) starts from a projected line (dashed line in Fig. 7), the projected line comprising the furthest point of the safety latch contact surface (13) in the locking direction of the engagement head (11).
  • Fig. 7 demonstrates an enlarged view of detail X given in Fig. 3b while the hook lever (9) is driven to engage with the safety latch (12) and the locking arm’s (14) locking position is reached according to the present invention.
  • Fig. 9 demonstrates an enlarged view of detail X given in Fig. 3b while the handle (7) is rotated to drive the hook lever (9) where the engagement head (11) can easily enter into the locking arm recess (15) due to its narrowed neck portion (19) according to the present invention.
  • the present invention proposes a laundry washing/drying machine (1) comprising a rotary drum in which the laundry is placeable, an electric motor rotating the rotary drum and a front door (3) allowing access into the rotary drum for loading or unloading laundry through an access opening (2), the front door (3) being openable around a door hinge (5) in the manner that a lock mechanism (6) comprising a handle (7) in mechanical communication with a hook lever (9) releasably secures an engagement head (11) by which the front door (3) is lockable or unlockable.
  • the engagement head (11) is structurally configured to maintain a recess contact portion (16) contact with a locking arm recess (15) of a locking arm (14) in an engaged state with a safety latch (12) maintaining therewith a safety latch contact surface (13).
  • the recess contact portion (16) projects along longitudinal axis of the locking arm (14) in the engaged state of the engagement head (11) with the safety latch (12), the projecting recess contact portion (16) starting from a line perpendicular to the longitudinal axis of the locking arm (14) and projected from the furthest point of the safety latch contact surface (13) in the direction of the safety latch (12).
  • the engagement head (11) is configured to maintain the recess contact portion (16) contact with an inner wall portion of the locking arm recess (15) in its engaged state with the safety latch (12).
  • the engagement head’s (11) position in the locking arm recess (15) is fixed by a locking pin (17) forced into latched engagement with a locking pin slot (18) of the locking arm (14).
  • the engagement head (11) maintains the safety latch contact surface (13) with the safety latch (12) such that the two parts remain in mechanical engagement with each other during locked state of the front door (3).
  • the engagement head (11) is provided with a narrowed neck portion (19) compensating the projecting recess contact portion (16) such that it is rotatably introducible into the locking arm recess (15).
  • the projecting recess contact portion (16) is designed to protrude starting from a line intersecting with the furthest point of the safety latch contact surface (13) in the direction of the safety latch (12) or in the counter-clockwise locking direction of the hook lever (9), the line extending perpendicular to the longitudinal axis of the safety latch (12) or locking arm (14).
  • the invention therefore provides a convenient solution to the problem of misalignment between the locking pin (17) and the locking pin slot (18), eliminating the need for redesigning a large number of mechanical elements as the amount of displacement of the handle (7) or the angle swept by the same relative to the handle cover (8) as well as the amount of rotation of the hook lever (9) remain unchanged.

Landscapes

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

Abstract

La présente invention concerne une machine à laver/sécher le linge (1) comprenant une porte avant (3) présentant un mécanisme de verrouillage de porte frontale (3) renforcé mécaniquement. La présente invention concerne plus particulièrement une machine à laver/sécher le linge (1) comprenant un tambour rotatif dans lequel le linge est placé, un moteur électrique qui fait tourner le tambour rotatif, et une porte frontale (3) servant d'accès au tambour rotatif pour le chargement ou le déchargement du linge par une ouverture d'accès (2). La porte frontale (3) peut s'ouvrir autour d'une charnière (5), de façon à permettre à un mécanisme de verrouillage (6), qui comprend une poignée (7) en communication mécanique avec un levier à crochet (9), de fixer de manière libérable une tête de mise en prise (11) de telle sorte que la porte frontale (3) puisse être verrouillée et déverrouillée.
PCT/EP2014/071171 2014-10-02 2014-10-02 Machine à laver/sécher le linge ayant un mécanisme de verrouillage amélioré Ceased WO2016050310A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/071171 WO2016050310A1 (fr) 2014-10-02 2014-10-02 Machine à laver/sécher le linge ayant un mécanisme de verrouillage amélioré

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/071171 WO2016050310A1 (fr) 2014-10-02 2014-10-02 Machine à laver/sécher le linge ayant un mécanisme de verrouillage amélioré

Publications (1)

Publication Number Publication Date
WO2016050310A1 true WO2016050310A1 (fr) 2016-04-07

Family

ID=51655761

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/071171 Ceased WO2016050310A1 (fr) 2014-10-02 2014-10-02 Machine à laver/sécher le linge ayant un mécanisme de verrouillage amélioré

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Country Link
WO (1) WO2016050310A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10479136B2 (en) 2015-01-06 2019-11-19 Rotacaster Wheel Limited Wheel frame component

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19815591A1 (de) * 1998-04-08 1999-10-14 Ellenberger & Poensgen Türverriegelungsvorrichtung für elektrische Geräte
US20040083769A1 (en) * 2002-01-09 2004-05-06 Kim Jong Seok Door assembly and a washing machine and a dryer using the same
EP1972715A1 (fr) * 2007-03-22 2008-09-24 Elettrotecnica Rold Srl Dispositif de verrouillage pour la fermeture du couvercle de machines à laver et de séchage
US20110133490A1 (en) * 2008-09-03 2011-06-09 Itw Metalflex, D.O.O. Tolmin Safety lock for a door of a household appliance, preferably of a washing machine
EP2402499A1 (fr) * 2010-07-02 2012-01-04 Panasonic Corporation Appareil de traitement du linge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19815591A1 (de) * 1998-04-08 1999-10-14 Ellenberger & Poensgen Türverriegelungsvorrichtung für elektrische Geräte
US20040083769A1 (en) * 2002-01-09 2004-05-06 Kim Jong Seok Door assembly and a washing machine and a dryer using the same
EP1972715A1 (fr) * 2007-03-22 2008-09-24 Elettrotecnica Rold Srl Dispositif de verrouillage pour la fermeture du couvercle de machines à laver et de séchage
US20110133490A1 (en) * 2008-09-03 2011-06-09 Itw Metalflex, D.O.O. Tolmin Safety lock for a door of a household appliance, preferably of a washing machine
EP2402499A1 (fr) * 2010-07-02 2012-01-04 Panasonic Corporation Appareil de traitement du linge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10479136B2 (en) 2015-01-06 2019-11-19 Rotacaster Wheel Limited Wheel frame component

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