EP1621658A2 - Eine Türverriegelungseinrichtung, insbesondere für ein Haushaltgerät - Google Patents

Eine Türverriegelungseinrichtung, insbesondere für ein Haushaltgerät Download PDF

Info

Publication number
EP1621658A2
EP1621658A2 EP20050105753 EP05105753A EP1621658A2 EP 1621658 A2 EP1621658 A2 EP 1621658A2 EP 20050105753 EP20050105753 EP 20050105753 EP 05105753 A EP05105753 A EP 05105753A EP 1621658 A2 EP1621658 A2 EP 1621658A2
Authority
EP
European Patent Office
Prior art keywords
core
locking device
door
solenoid
door locking
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.)
Granted
Application number
EP20050105753
Other languages
English (en)
French (fr)
Other versions
EP1621658B1 (de
EP1621658A3 (de
Inventor
Fabrizio Promutico
Paolo Da Pont
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.)
Bitron SpA
Original Assignee
Bitron SpA
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 Bitron SpA filed Critical Bitron SpA
Priority to EP20090158169 priority Critical patent/EP2075365A1/de
Priority to PL05105753T priority patent/PL1621658T3/pl
Publication of EP1621658A2 publication Critical patent/EP1621658A2/de
Publication of EP1621658A3 publication Critical patent/EP1621658A3/de
Application granted granted Critical
Publication of EP1621658B1 publication Critical patent/EP1621658B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
    • E05B47/0002—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets
    • E05B47/0003—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core
    • E05B47/0005—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with electromagnets having a movable core said core being rotary movable
    • 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
    • E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
    • E05B47/026—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means the bolt moving rectilinearly
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/02—Automatic catches, i.e. released by pull or pressure on the wing
    • E05C19/028—Automatic catches, i.e. released by pull or pressure on the wing with sliding bolt(s)
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/04—Spring arrangements in locks
    • E05B2015/0458—Leaf springs; Non-wound wire springs
    • 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
    • E05B2047/0048—Circuits, feeding, monitoring
    • E05B2047/0067—Monitoring
    • E05B2047/0069—Monitoring bolt position
    • 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
    • E05B2047/0072—Operation
    • E05B2047/0081—Same pulse to lock or unlock

Definitions

  • the present invention relates to a door locking device, in particular for a domestic appliance, such as a washing machine.
  • the object of the present invention is to provide an improved door locking device, of an extremely simple construction, including a minimum number of components, and proving extremely safe and reliable in operation.
  • a door locking device comprising a support structure for connection to a domestic appliance; a retaining slider, which is movable relative to the said structure and operable to assume an inactive position when the door is open and which, by interacting with the door as this is closed, is able to move to a working position in which it holds the door in this closed position; and an electromechanical control device, comprising a stationary solenoid, carried by the said structure and operable to control the axial position of an associated core, movable in a direction which intersects the path of the slider; resilient means associated with the said core and tending to urge it from a retracted axial position into an extended axial position, in which it either allows or prevents the slider from returning to its resting position from the working position; and cam means associated with the said core, extending around it and cooperating with it in such a way that each time the solenoid is excited, the core is returned axially to its retracted position while rotating about its axis by a pre
  • a door locking device 1 includes a support structure which in the embodiment illustrated by way of example essentially includes a box-shape body 2 and an associated lid 3, both made of a moulded plastics material for example.
  • the lid 3 has a plurality of fixing holes 4 with corresponding retaining projections 5, formed in the external surfaces of the main side walls of the box-shape body 2, engaged therein (see Figures 1 to 3 in particular).
  • the door locking device 1 also includes a retaining slider 6, made of metal for example.
  • This slider which can be seen in only some of the appended drawings, is mounted in a manner which is known per se so as to be movable relative to the support structure 2, 3 along a path indicated by the double arrow F of Figure 1.
  • the retaining slider 6 can assume a rest position as shown in Figures 3 to 5, corresponding to the condition in which the associated door of a domestic appliance is open.
  • the retaining slider 6 is able to interact with the door (generally provided with a hook) as this is closed and to move into a working position, shown in Figures 6, 9 and 10, in which it acts to keep the door of the domestic appliance in its closed condition.
  • the retaining slider 6 has a first aperture 7, essentially in the form of a slot, extending along the path F of the said slider (see Figures 3, 4 and 6).
  • the edges of the aperture 7 in the slider 6 form downwardly-converging inclined surfaces 7a, 7b, at least along the opposite end portions of the aperture, for reasons which will become clearer later.
  • the slider 6 has another aperture, indicated 8 in Figures 5, 9 and 10, the function of which will be explained later.
  • a tubular formation 9 extends upwardly within the box-like body 2 from the bottom 2a thereof, with a rod or pin 10 mounted for axial translation therein, with an advantageously rounded end towards the slider 6.
  • a shaped support base 11 is formed in the box-like body 2, on the right hand in said drawings, with an electrical terminal 12 fixed thereon with two extensions or spring metal blades 13, 14, substantially coplanar and parallel to one another.
  • the distal end of the metal blade 13 bears on the end of the rod or pin 10 opposite the slider 6 (see Figure 3, for example) and tends to urge this pin 10 against said slider 6.
  • a contact 15 is fixed to the lower surface of the metal blade 13, for cooperation with an associated fixed contact 16 which is stationary relative to the support structure 2, 3 of the door locking device.
  • the door can be opened manually by a user: the movement of opening the door causes the slider 6 to move, in the opposite direction to that indicated by the arrow F1 of Figure 6.
  • the lower, rounded end of the pin 10 therefore moves back up along the inclined edge 7a of the slot 7, returning to bear against the slider 6. This causes the switch formed by the contacts 15 and 16 to open, signaling that the door is open.
  • the lower surface of the metal blade 13 is also connected to a respective movable contact, indicated 17, for cooperation with an associated fixed contact 18 carried by a shaped metal element 19 secured inside the box-like body 2.
  • the contacts 17 and 18 together form a further electric switch able to signal to a control unit of the domestic appliance that the door is locked into its closed position.
  • the door of the electric appliance is locked into its closed position by locking the retaining slider 6 into the working position described earlier.
  • this is achieved by means of an electro-mechanical control device generally indicated 20.
  • This device includes a solenoid 21 carried by a cylindrical former 22 which in the embodiment illustrated has upper and lower square end flanges 23 and 24 respectively.
  • An assembly generally indicated 27 is mounted for axial translation inside the former 22 bearing the solenoid 21 and includes a cylindrical body 28, made of a plastics material for example, with a cylindrical core 29 of a ferromagnetic material fixed inside it.
  • the lower end of the core 29 projects from the corresponding bottom end of the cylindrical body 28.
  • the lower end of the cylindrical body 28 has two diametrically opposite projections indicated 28a (see Figures 2, 5 and 10 for example).
  • a substantially circular aperture 30 is formed through the bottom portion of the box-like body 2, with the lower end of the core 29 of the solenoid 21 extending through it, as can be seen in Figures 4, 5, 9 and 10.
  • Two almost semi-circular formations 31, 32 extend upwardly from the upper surface of the bottom of the box-like body 2, coaxially of the aperture 30, and are shaped at the top so as to form respective cam sections for cooperating in operation with the projections 28a on the body 28 of the movable assembly 27.
  • two diametrically opposite interruptions or gaps 33 and 34 are formed between the formations 31 and 32, for engagement by the projections 28a on the movable body 28 of the solenoid 21, as can be seen for example in Figure 8.
  • each of the formations 31 and 32 is serrated and, starting from a window, 33 or 34 respectively and proceeding in an anti-clockwise direction when observing Figure 2, has three upwardly facing crests, separated by two valleys which form downwardly facing crests.
  • a circular formation extends from the lower surface of the flange 24 of the former of the solenoid 21, having a toothed profile which substantially corresponds, or is virtually complementary with that of the arrangement of formations 31 and 32 projecting from the bottom surface of the box-like body.
  • a circumferentially extending row of saw teeth 35 extend from the lower flange 24 of the former of the solenoid, the pitch thereof substantially corresponding to that of the crests and valleys of the formations 31 and 32.
  • the teeth 35 of the lower flange of the solenoid former are also slightly offset angularly with respect to the crests and valleys of the formations 31 and 32, in an anti-clockwise direction when observing Figures 7 and 8.
  • the vertical distance between the edges of the teeth 35 and the edges of the serrated formations 31 and 32 is greater than or equal to the transverse dimension of the projecting formations 28a on the body 28 of the movable assembly 27.
  • the act of closing the door causes the pin 10 to engage the slot-shape aperture 7 in the slider 6 and the switch formed by the contacts 15 and 16 to close. It is convenient if, in addition to signaling that the door is closed, this switch also closes a power circuit operable to excite the solenoid 21.
  • the electro-mechanical or electronic control unit thereof can then excite the solenoid 21.
  • the magnetic field thus formed recalls the movable assembly 27 upwards, against the action of the metal spring blade 14.
  • the radial projections 28a on the body 28 each slide up a crest of the formations 31 and 32 until they engage a corresponding groove facing this crest and formed between two adjacent teeth 35 on the lower flange 24 of the former bearing the solenoid.
  • the excitation of the solenoid causes the movable assembly 27 not only two move upwards axially but also to rotate, clockwise as viewed when looking at Figure 2.
  • the movable assembly 27 moves back down under the thrust of the metal spring blade 14.
  • the radially projecting formations 28a on the body 28 then engage the descending ramps of the corresponding crests up which the formations 31 and 32 moved earlier, until they drop into the grooves 33 and 34 formed between the said formations.
  • the lower end of the core 29 therefore projects from the bottom of the aperture 30 in the bottom of the box-like body 2, engaging the corresponding aperture 8 in the slider 6 (see Figures 8 and 10). In this condition, the slider 6 is prevented from returning to its rest position (see Figures 3 to 5). The door is thus locked.
  • closure of the switch formed by the two contacts 17 and 18 signals to the control unit of the domestic appliance that the door is closed and locked.
  • the control unit thereof can excite the solenoid 21 once again. This initially causes the movable assembly 27 to translate upwards axially until the radial projections 28a on the body 28 disengage the grooves 33 and 34 formed between the formations 31 and 32.
  • the projections 28a move up the rising face of the next crest in the formations 32 and 31 until they engage a corresponding groove defined between two adjacent teeth 35 of the flange 24 of the former bearing the solenoid.
  • the action of the metal spring blade 14 causes the movable assembly 27 to move back down, rotating further in the same sense as before, until each projection 28a on the body 28 engages the next valley in the formations 32 and 31.
  • the height of these valleys from the bottom surface of the box-like body 2 is such that the core 29 disengages from the aperture 8 in the slider 6, thereby releasing the door of the domestic appliance, ready for it to be opened again.
  • the height of these valleys 31 and 32 from the bottom surface of the body 2 can be such that the core 29 still projects far enough through the bottom of the body to lock the slider 6 in its door closed position.
  • the solenoid 21 in order to unlock the door the solenoid 21 must be excited and subsequently de-excited once again, causing the subsequent rise up a rising face of a crest of the formations 31 and 32, followed by a descent into the next valley of these formations, this last valley being at a height sufficient to disengage the core 29 from the corresponding aperture 8 in the slider.
  • a traction member for example a cable (not shown), connected to a member 40 (see Figures 1, 2 and 11) mounted for translation in a slot 41 through the box-like body 2.
  • the portion of this member extending inside the box-like body has a projection 42 with an inclined face for engagement with a radial projection 28a on the body 28, which would cause it to disengage from the corresponding valley 33 and 34 defined between the formations 31 and 32, thereby causing the entire movable assembly 27 to move upwards, thereby disengaging the core 29 from the slider 6.
  • This manoeuvre releases the slider 6, enabling the user to open the door manually.
  • the member 40 described above has a transverse spring extension 43 able to act as a resilient biasing element.
  • the distal end 43a of this spring extension 43 is engaged in a retaining housing 44 formed in the box-like body 2 ( Figure 2).
  • the device of the invention consists of a very limited number of components, thanks in part to the use of the core 29 as the member which locks the slider.
  • An additional structural simplification and reduction of the number of parts can be achieved by using the metal blades 13 and 14 as biasing springs as well as contact-bearing conductors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Lock And Its Accessories (AREA)
  • Push-Button Switches (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
EP05105753.7A 2004-07-30 2005-06-28 Eine Türverriegelungseinrichtung für ein Haushaltgerät Not-in-force EP1621658B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20090158169 EP2075365A1 (de) 2004-07-30 2005-06-28 Eine Türverriegelungseinrichtung, insbesondere für ein Haushaltgerät
PL05105753T PL1621658T3 (pl) 2004-07-30 2005-06-28 Urządzenie do blokowania drzwiczek do urządzenia gospodarstwa domowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000540A ITTO20040540A1 (it) 2004-07-30 2004-07-30 Dispositivo blocca-porta, particolarmente per un apparecchio elettrodomestico

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP20090158169 Division-Into EP2075365A1 (de) 2004-07-30 2005-06-28 Eine Türverriegelungseinrichtung, insbesondere für ein Haushaltgerät
EP20090158169 Division EP2075365A1 (de) 2004-07-30 2005-06-28 Eine Türverriegelungseinrichtung, insbesondere für ein Haushaltgerät

Publications (3)

Publication Number Publication Date
EP1621658A2 true EP1621658A2 (de) 2006-02-01
EP1621658A3 EP1621658A3 (de) 2009-07-01
EP1621658B1 EP1621658B1 (de) 2015-09-09

Family

ID=35207727

Family Applications (2)

Application Number Title Priority Date Filing Date
EP05105753.7A Not-in-force EP1621658B1 (de) 2004-07-30 2005-06-28 Eine Türverriegelungseinrichtung für ein Haushaltgerät
EP20090158169 Ceased EP2075365A1 (de) 2004-07-30 2005-06-28 Eine Türverriegelungseinrichtung, insbesondere für ein Haushaltgerät

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20090158169 Ceased EP2075365A1 (de) 2004-07-30 2005-06-28 Eine Türverriegelungseinrichtung, insbesondere für ein Haushaltgerät

Country Status (4)

Country Link
EP (2) EP1621658B1 (de)
DE (1) DE09158169T1 (de)
IT (1) ITTO20040540A1 (de)
PL (1) PL1621658T3 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010026536A1 (en) * 2008-09-03 2010-03-11 Itw Metalflex, D.O.O. Tolmin Safety lock for a door of a household appliance, preferably of a washing machine
ITRM20130017A1 (it) * 2013-01-10 2014-07-11 Bitron Spa Dispositivo blocco-porta ad attivazione magnetica.
US8991877B2 (en) 2004-12-16 2015-03-31 Emz-Hanauer Gmbh & Co. Kgaa Door lock for the door of a household appliance
DE102018002418A1 (de) * 2018-03-23 2019-09-26 Emz-Hanauer Gmbh & Co. Kgaa Elektrisches Haushaltsgerät mit Türverschluss
EP3587656A1 (de) 2018-06-22 2020-01-01 Bitron S.p.A. Türschliessvorrichtung
WO2020049602A1 (en) * 2018-09-07 2020-03-12 Bitron S.P.A. Safety module for door-lock device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6511014B2 (ja) * 2016-05-24 2019-05-08 株式会社栃木屋 施錠装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5520424A (en) * 1995-01-30 1996-05-28 U.S. Controls Copr. Tamper-proof door switch and latch device
US6325429B1 (en) * 1998-10-23 2001-12-04 Randall C. Oxley Electrically operated door lock
EP1039012A1 (de) * 1999-03-22 2000-09-27 Siber B.V. Sicherheitstürverschluss-System insbesondere für Waschmaschinen mit eingebautem elektronischem System
JP2001204991A (ja) * 1999-12-29 2001-07-31 Lg Electronics Inc ドラム洗濯機のドアロックスイッチアセンブリ
ITTO20030273A1 (it) * 2003-04-09 2004-10-10 Bitron Spa Dispositivo di bloccaggio e sbloccaggio del portello

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8991877B2 (en) 2004-12-16 2015-03-31 Emz-Hanauer Gmbh & Co. Kgaa Door lock for the door of a household appliance
CN102159758B (zh) * 2008-09-03 2014-04-02 Itw美达丰(托尔明)公司 用于家用电器，优选是洗衣机的门的安全锁
US8727391B2 (en) 2008-09-03 2014-05-20 Itw Metaflex, D.O.O. Tolmin Safety lock for a door of a household appliance, preferably of a washing machine
WO2010026536A1 (en) * 2008-09-03 2010-03-11 Itw Metalflex, D.O.O. Tolmin Safety lock for a door of a household appliance, preferably of a washing machine
KR20160041846A (ko) * 2013-01-10 2016-04-18 비트론 에스.피.에이. 자기로 작동되는 도어잠금장치
WO2014108928A1 (en) * 2013-01-10 2014-07-17 Bitron S.P.A. Magnetically activated door-lock device
ITRM20130017A1 (it) * 2013-01-10 2014-07-11 Bitron Spa Dispositivo blocco-porta ad attivazione magnetica.
US10190336B2 (en) 2013-01-10 2019-01-29 Bitron S.P.A. Magnetically activated door-lock device
DE102018002418A1 (de) * 2018-03-23 2019-09-26 Emz-Hanauer Gmbh & Co. Kgaa Elektrisches Haushaltsgerät mit Türverschluss
DE102018002418B4 (de) * 2018-03-23 2020-02-13 Emz-Hanauer Gmbh & Co. Kgaa Elektrisches Haushaltsgerät mit Türverschluss
EP3587656A1 (de) 2018-06-22 2020-01-01 Bitron S.p.A. Türschliessvorrichtung
WO2020049602A1 (en) * 2018-09-07 2020-03-12 Bitron S.P.A. Safety module for door-lock device
WO2020049603A1 (en) * 2018-09-07 2020-03-12 Bitron S.P.A. Safety module for door-lock device

Also Published As

Publication number Publication date
EP1621658B1 (de) 2015-09-09
DE09158169T1 (de) 2019-02-28
ITTO20040540A1 (it) 2004-10-30
PL1621658T3 (pl) 2016-04-29
EP1621658A3 (de) 2009-07-01
EP2075365A1 (de) 2009-07-01

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