EP2159316B1 - Laundry washing machine - Google Patents

Laundry washing machine Download PDF

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Publication number
EP2159316B1
EP2159316B1 EP08163007A EP08163007A EP2159316B1 EP 2159316 B1 EP2159316 B1 EP 2159316B1 EP 08163007 A EP08163007 A EP 08163007A EP 08163007 A EP08163007 A EP 08163007A EP 2159316 B1 EP2159316 B1 EP 2159316B1
Authority
EP
European Patent Office
Prior art keywords
latch element
opening
door
washing machine
lock
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.)
Not-in-force
Application number
EP08163007A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2159316A1 (en
Inventor
Roberto Bottosset
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to ES08163007T priority Critical patent/ES2375531T3/es
Priority to AT08163007T priority patent/ATE528433T1/de
Priority to EP08163007A priority patent/EP2159316B1/en
Priority to PL08163007T priority patent/PL2159316T3/pl
Priority to PCT/EP2009/005620 priority patent/WO2010022845A1/en
Priority to RU2009132058/12A priority patent/RU2506361C2/ru
Publication of EP2159316A1 publication Critical patent/EP2159316A1/en
Application granted granted Critical
Publication of EP2159316B1 publication Critical patent/EP2159316B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/06—Controlling mechanically-operated bolts by electro-magnetically-operated detents
    • E05B47/0696—Controlling mechanically-operated bolts by electro-magnetically-operated detents locking the bolt by an electromagnet in the striker
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/24—Arrangements in which the fastening members which engage one another are mounted respectively on the wing and the frame and are both movable, e.g. for release by moving either of them
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B2047/0084—Key or electric means; Emergency release

Definitions

  • the present invention relates to a laundry washing machine, as known e.g. from DE-U-8806999 .
  • the present invention relates to a front-loading home laundry washing machine, to which the following description refers purely by way of example.
  • front-loading home laundry washing machines generally comprise a substantially parallelepiped-shaped outer box casing resting on the floor; a substantially bell-shaped washing tub which is suspended in floating manner inside the casing, directly facing a laundry loading and unloading opening formed in the front wall of the casing; a door hinged to the front wall of the casing to rotate to and from a closing position in which the door rests completely against the casing to close the opening in the front wall of the casing and watertight seal the washing tub; a revolving drum for housing the laundry to be washed, and which is housed inside the washing tub to rotate about its longitudinal axis; and, finally, an electric motor assembly for rotating the revolving drum about its longitudinal axis inside the washing tub.
  • modern front-loading home laundry washing machines also comprise a manually-operated door lock device designed to selectively lock the door to the machine casing when the door is in the closing position, and an electrically-operated safety lock device designed to selectively prevent the manually-operated door lock device from releasing the door from the machine casing when the revolving drum is rotating and/or the washing tub is filled with water.
  • the manually-operated door lock device consists of a hooked catch element or lever which projects from the outer frame of the door towards the front face of the machine casing, and is hinged to the door frame so as to enter into a corresponding through opening formed in the front wall of the machine casing, next to the laundry loading and unloading opening, and there firmly engage the machine casing; a torsion spring designed to keep the hooked catch element in a position substantially perpendicular to the plane of the door frame, so that the distal end of the catch element rests on the edge of the machine casing; and of a door handle connected mechanically to the hooked catch element to allow the user to tilt the hooked catch element manually to release the distal end of the catch element from the machine casing.
  • the electrically-operated safety lock device is fixed to the front wall of the machine casing, inside the casing, is substantially aligned with the through opening in the front wall, and comprises a plate-like latch element fitted in axially sliding manner to a supporting frame fixed rigidly to the machine casing.
  • the latch element extends and is movable on a plane substantially tangent to the portion of the front wall of the machine casing where the through opening is formed, and has a second through opening sized to be engaged by the distal end of the hooked catch element.
  • the electrically-operated safety lock device also comprises a spring member designed to keep the latch element in an unlock position in which the through opening in the latch element is substantially aligned with the through opening in the front wall of the machine casing; and a first electrically-operated linear actuator which, on command of the washing machine electronic central control unit, temporarily counteracts the elastic force of the spring member, and moves the latch element, in its plane, from the unlock position to a lock position, in which the latch element engages the hooked catch element like a guillotine to prevent manual tilt of the hooked catch element.
  • the electrically-operated safety lock device also comprises a safety lock pin extending perpendicularly to the latch element lying plane; and a second electrically-operated linear actuator (e.g. a PTC bimetallic thermal switch) for moving the safety lock pin axially on command of the washing machine electronic central control unit.
  • a second electrically-operated linear actuator e.g. a PTC bimetallic thermal switch
  • the latch element body has a through hole which is aligned with the safety lock pin when the latch element is in the lock position preventing manual tilt of the hooked catch element, and the second actuator moves the safety lock pin axially between an extracted position in which the safety lock pin engages the through hole in the latch element body, thus preventing the latch element from returning to the unlock position, and a withdrawn position in which the safety lock pin does not engage the latch element body, thus allowing free movement of the latch.
  • the second actuator moves the safety lock pin into the extracted position when the laundry washing machine starts the washing cycle, thus locking the latch element in the position preventing manual tilt of the hooked catch element, and moves the safety lock pin back into the withdrawn position with a given time delay after the machine completes the washing cycle, or the washing cycle is stopped in advance by the user.
  • the major drawback of the electrically-operated safety lock device described above lies in the fact that, in the event of the safety lock pin accidentally remaining in the extracted position because of electric power failure or mechanical jamming, there is no way of opening the door other than forcing both the manually-operated door lock device and the electrically-operated safety lock device, thus incurring repairing costs.
  • a laundry washing machine as claimed in Claim 1 and preferably, though not necessarily, in any one of the dependent Claims.
  • number 1 indicates as a whole a laundry washing machine comprising a preferably; though not necessarily, parallelepiped-shaped outer box casing 2 resting on the floor; a substantially bell-shaped washing tub (non shown) suspended in floating manner inside the casing, directly facing a laundry loading and unloading opening 3a formed in a main wall 3 of casing 2; a revolving drum (non shown) for housing the laundry to be washed, and which is housed inside the washing tub to rotate about its longitudinal axis; and a door 4 hinged to main wall 3 of the casing to rotate to and from a closing position in which door 4 rests on the outer face of wall 3 to close opening 3a and watertight seal the washing tub of the washing machine.
  • opening 3a is formed in the flat bottom of a substantially sink-shaped seat 3b formed in the outer face of wall 3, and door 4 is shaped to fit inside seat 3b in the closing position, and to define within seat 3b an annular recess 5 of given width.
  • laundry washing machine 1 is a front-loading washing machine, so opening 3a is formed in the front face of casing 2, and door 4 is hinged in known manner to front wall 3 of the casing to rotate about a preferably, though not necessarily, vertical axis A to and from a closing position ( Figures 2 and 3 ) in which door 4 rests on the bottom of seat 3b to close opening 3a and watertight seal the washing tub of the washing machine.
  • washing machine 1 also comprises a manually-operated door lock device 6 designed to selectively lock door 4 to casing 2 when door 4 rests on the bottom of seat 3b in the closing position; and an electrically-operated safety lock device 7 designed to selectively prevent door lock device 6 from releasing door 4 from casing 2, e.g. when the revolving drum rotates and/or the washing tub is filled with water.
  • a manually-operated door lock device 6 designed to selectively lock door 4 to casing 2 when door 4 rests on the bottom of seat 3b in the closing position
  • an electrically-operated safety lock device 7 designed to selectively prevent door lock device 6 from releasing door 4 from casing 2, e.g. when the revolving drum rotates and/or the washing tub is filled with water.
  • Door lock device 6 comprises a hooked catch element or lever 8 which projects from the outer frame of door 4 towards front wall 3 of casing 2, and enters into a corresponding through opening 9 formed in front wall 3 of casing 2, next to opening 3a. More specifically, hooked catch element 8 is hinged to the frame of door 4 to swing about a transverse axis B preferably, though not necessarily, parallel to vertical axis A, so the hooked distal end 8a of catch element 8 goes beyond front wall 3 through opening 9, and rests onto the inner face of wall 3 to secure door 4 firmly to casing 2.
  • door lock device 6 also comprises a spring element (non shown) designed to keep catch element 8 in a rest position, wherein catch element 8 is substantially perpendicular to plane M of the door frame - i.e. locally perpendicular to the bottom surface of seat 3b - to enable the hooked distal end 8a of catch element 8 to engage the edge of casing 2 defining opening 9; and a door handle 10 which is hinged to the door frame, on the opposite side of plane M with respect to catch element 8, and is mechanically connected to catch element 8 to allow the user to tilt catch element 8 manually to release the hooked distal end 8a of catch element 8 from the edge of front wall 3, i.e. from the edge of casing 2.
  • a spring element non shown
  • safety lock device 7 is fixed to the inner face of front wall 3, i.e. inside machine casing 2, is substantially aligned with through opening 9 in front wall 3, and comprises a preferably, though not necessarily, plate-like latch element 11 fitted in axially sliding manner to a supporting frame 12 rigidly fixed to front wall 3 of machine casing 2.
  • Latch element 11 extends and is movable on a plane W substantially tangent to the flat bottom of seat 3b in front wall 3, and has a preferably, though not necessarily, rectangular through opening 11a sized to be engaged by the distal end 8a of catch element 8.
  • Safety lock device 7 also comprises a spring member 13 which is interposed between frame 12 and latch element 11 and is designed to keep latch element 11 in an unlock position ( Figure 2 ) in which through opening 11a is substantially aligned with through opening 9 in front wall 3, thus allowing free entrance of the hooked distal end 8a into opening 9 and free tilting of catch element 8.
  • through opening 11a of latch element 11 is dimensioned to partially cover, when latch element 11 rests in the unlock position, the through opening 9 in front wall 3, so that the distal end 8a of catch element 8, to cross opening 9, is obliged to move latch element 11 sideways on supporting frame 12 overcoming the elastic force of spring member 13.
  • spring member 13 is designed to be less rigid than the spring element of door lock device 6, so that the spring element of door lock device 6 can counteract the elastic force of spring member 13 when the hooked distal end 8a of catch element 8 crosses through opening 9, and keep catch element 8 in the rest position to enable the hooked distal end 8a of catch element 8 to engage the edge of casing 2.
  • the hooked distal end 8a of catch element 8 when engaged to the edge of casing 2 defining opening 9, the hooked distal end 8a of catch element 8 also moves latch element 11 sideways on plane W from its unlock position to a lock position in which latch element 11 engages catch element 8 in guillotine-fashion, and the release of the hooked distal end 8a of catch element 8 from the edge of front wall 3 is subordinated to the movement of latch element 11 from the lock position ( Figure 3 ) back to the unlock position ( Figure 2 ).
  • safety lock device 7 also comprises a lock pin 15 extending substantially perpendicular to plane W of latch element 11; and an electrically-operated linear actuator 16 for moving lock pin 15 axially on command of the washing machine central control unit or on direct command of the user.
  • the body of latch element 11 has a through lateral notch or a through hole 11b which is aligned with lock pin 15 ( Figure 3 ) when latch element 11 is in the lock position and prevents the manually-operated tilting of hooked catch element 8; and linear actuator 16 moves lock pin 15 axially between an extracted position ( Figure 3 ) in which lock pin 15 engages the lateral notch or hole 11b in the body of latch element 11, thus preventing latch element 11 from returning to the unlock position, and a withdrawn position ( Figure 2 ) in which lock pin 15 does not engage the body of latch element 11, thus allowing free movement of the latch element.
  • Linear actuator 16 is a commonly know washing machine part and therefore not described in detail.
  • front wall 3 of machine casing 2 has, on the bottom of annular recess 5, an additional through hole or slot 17 which is aligned with lock pin 15 of safety lock device 7, and directly communicates with the through hole 11b in latch element 11 ( Figure 3 ) when latch element 11 is in the lock position for preventing manual tilt of catch element 8.
  • through hole 17 in front wall 3 is aligned with lock pin 15, on the opposite side of latch element 11 to lock pin 15.
  • slot 17 may be realized on front wall 3 of machine casing 2, outside of sink-shaped seat 3b, i.e. out of annular recess 5.
  • washing machine 1 also comprises a separate emergency-opening tool 18 (namely, an appropriately sized nail or screwdriver), the tip of which is sized to fit easily through hole 17 into casing 2, to engage the end of lock pin 15 and force the axial displacement of lock pin 15 from the extracted position back into the withdrawn position, and so restore latch element 11 to the unlock position.
  • emergency-opening tool 18 may be replaced by a proper-sized household tool.
  • through hole 17 in front wall 3 allows manual displacement of lock pin 15 from the extracted position to the withdrawn position, thus eliminating repair expenses in the event of lock pin 15 remaining in the extracted position due to electric power failure or mechanical jamming.
  • the hooked distal end 8a of catch element 8 may engage either the supporting frame 12 or directly the latch element 11 of safety lock device 7 for selectively locking door 4 to machine casing 2.
  • laundry loading and unloading opening 3a on front wall 3 may be shaped so as to incorporate through opening 9.
  • catch element 8 enters into opening 3a, near to the opening edge, and safety lock device 7 is fixed to front wall 3 so that latch element 11 partially protrudes directly into the perimeter of opening 3a for being engaged by the distal end 8a of catch element 8.
  • the distal end 8a of catch element 8 may hook on the edge of casing 2 defining opening 9, or on supporting frame 12 of safety lock device 7, or directly on latch element 11 of safety lock device 7.
  • lock pin 15 may have a projecting appendix 15a extending substantially parallel to plane W, so that the distal end of appendix 15a projects from the perimeter of latch element 11.
  • through hole 17 in front wall 3 is aligned with the distal end of appendix 15a, and the tip of emergency-opening tool 18 rests directly on the distal end of appendix 15a to force lock pin 15 axially from the extracted position back into the withdrawn position.
  • emergency-opening tool 18 does not penetrate the body of latch element 11 to reach lock pin 15.
  • safety lock device 7 may comprise a rocker arm 20 which extends substantially parallel to latch plane W, is hinged to supporting frame 12 to swing about a rotation axis locally parallel to plane W, and has a first end aligned with the end of lock pin 15, and a second end aligned with through hole 17 in front wall 3.
  • emergency-opening tool 18 acts on the second end of rocker arm 20, which in turn brings its first end to rest on the end of lock pin 15, and then pushes lock pin 15 back into the withdrawn position.
  • emergency-opening tool 18 may or may not penetrate the body of latch element 11, depending on the shape and position of rocker arm 20 with respect to latch element 11.
  • laundry washing machine 1 may be a top-loading washing machine.
  • opening 3a would be located on the upper face of casing 2; door 4 would be hinged in known manner to the top wall of casing 3 for rotating about an horizontal axis; and safety lock device 7 would be fixed to the inner face of the top wall of casing 2, i.e. inside the machine casing 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Structural Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
EP08163007A 2008-08-26 2008-08-26 Laundry washing machine Not-in-force EP2159316B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES08163007T ES2375531T3 (es) 2008-08-26 2008-08-26 M�?quina lavadora de ropa.
AT08163007T ATE528433T1 (de) 2008-08-26 2008-08-26 Waschmaschine
EP08163007A EP2159316B1 (en) 2008-08-26 2008-08-26 Laundry washing machine
PL08163007T PL2159316T3 (pl) 2008-08-26 2008-08-26 Pralka
PCT/EP2009/005620 WO2010022845A1 (en) 2008-08-26 2009-08-04 Laundry washing machine
RU2009132058/12A RU2506361C2 (ru) 2008-08-26 2009-08-25 Стиральная машина

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08163007A EP2159316B1 (en) 2008-08-26 2008-08-26 Laundry washing machine

Publications (2)

Publication Number Publication Date
EP2159316A1 EP2159316A1 (en) 2010-03-03
EP2159316B1 true EP2159316B1 (en) 2011-10-12

Family

ID=40293866

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08163007A Not-in-force EP2159316B1 (en) 2008-08-26 2008-08-26 Laundry washing machine

Country Status (6)

Country Link
EP (1) EP2159316B1 (pl)
AT (1) ATE528433T1 (pl)
ES (1) ES2375531T3 (pl)
PL (1) PL2159316T3 (pl)
RU (1) RU2506361C2 (pl)
WO (1) WO2010022845A1 (pl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2977501A1 (en) * 2014-07-22 2016-01-27 Electrolux Appliances Aktiebolag Emergency openable laundry washing and/or drying appliance

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010063477B4 (de) * 2010-12-20 2015-11-05 Daimer GmbH Türmanagement Fernentriegelbare Torverriegelung
EP2543760B1 (en) * 2011-07-04 2016-06-15 Electrolux Home Products Corporation N.V. Laundry treatment machine, for example a washing machine or a laundry dryer or washer-dryer with emergency release system
KR101583348B1 (ko) * 2012-10-12 2016-01-07 엘지전자 주식회사 세탁기
EP2977498B1 (en) * 2014-07-22 2017-10-25 Electrolux Appliances Aktiebolag Method for an emergency opening of a door locking device of a laundry washing and/or drying appliance
TR201809086T4 (tr) * 2014-12-22 2018-07-23 Elettrotecnica Rold Srl Ev aletleri̇n kapatma kapisi i̇çi̇n ki̇li̇tleme terti̇bati.
US9217263B1 (en) 2015-03-19 2015-12-22 Getac Technology Corporation Double-opening lock assembly
DE102015105271B3 (de) * 2015-04-08 2016-07-07 Getac Technology Corporation Schlossvorrichtung mit doppeltem Öffnungsmechanismus
GR1009341B (el) * 2015-07-21 2018-08-13 Ελενη Δημητριου Παναγιωτιδη Μεθοδος εμπλοκης μηχανισμου κλειδωματος
IT201600086484A1 (it) * 2016-08-22 2018-02-22 Piazza Lucio Di Elettrodomestico migliorato
CN106436176B (zh) * 2016-11-17 2019-01-15 温州天健电器有限公司 一种洗衣机门锁装置
KR20210076384A (ko) 2019-12-16 2021-06-24 엘지전자 주식회사 세탁장치

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841518A (en) * 1972-08-31 1974-10-15 Emerson Electric Co Safety latch for boxes
DE3006307A1 (de) * 1980-02-20 1981-08-27 Miele & Cie GmbH & Co, 4830 Gütersloh Waschmaschine mit notentriegelung
DE8806999U1 (de) * 1988-05-28 1988-07-28 Ellenberger & Poensgen Gmbh, 8503 Altdorf Türverriegelungsvorrichtung für elektrische Geräte
KR100444954B1 (ko) * 2001-12-24 2004-08-21 삼성전자주식회사 도어 잠금장치를 갖춘 세탁기

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2977501A1 (en) * 2014-07-22 2016-01-27 Electrolux Appliances Aktiebolag Emergency openable laundry washing and/or drying appliance

Also Published As

Publication number Publication date
RU2506361C2 (ru) 2014-02-10
ES2375531T3 (es) 2012-03-01
ATE528433T1 (de) 2011-10-15
EP2159316A1 (en) 2010-03-03
RU2009132058A (ru) 2011-02-27
WO2010022845A1 (en) 2010-03-04
PL2159316T3 (pl) 2012-05-31

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