EP0439849A1 - Dispositif de verrouillage de porte avec verrouillage rapide et déverrouillage retardé, notamment d'une machine à laver - Google Patents

Dispositif de verrouillage de porte avec verrouillage rapide et déverrouillage retardé, notamment d'une machine à laver Download PDF

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Publication number
EP0439849A1
EP0439849A1 EP90203047A EP90203047A EP0439849A1 EP 0439849 A1 EP0439849 A1 EP 0439849A1 EP 90203047 A EP90203047 A EP 90203047A EP 90203047 A EP90203047 A EP 90203047A EP 0439849 A1 EP0439849 A1 EP 0439849A1
Authority
EP
European Patent Office
Prior art keywords
door
block
locking
cam
fact
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
EP90203047A
Other languages
German (de)
English (en)
Other versions
EP0439849B1 (fr
Inventor
Onofrio Rocchitelli
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0439849A1 publication Critical patent/EP0439849A1/fr
Application granted granted Critical
Publication of EP0439849B1 publication Critical patent/EP0439849B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E05B47/0009—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with thermo-electric actuators, e.g. heated bimetals
    • 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

Definitions

  • This invention in general lies in the field of locking systems of closing means of doors of machines having inner parts subjected to inertial rotation, and in particular it refers to locking systems of washing machine doors which, when working with electromeccanical programmers, aim at locking the closing device of the machine door once put into function and to unlock it with a certain delay after the electric current has been interrupted to the moving parts of the machine so as to avoid the opening of the door when certain parts of the machine may still be subjected to inertial rotation (in particular the cylinder of the centrifuge).
  • the locking device of the closing means of the door should contain in itself the means for the delayed unlocking, so it can be substituted with a microprocessor, just as unnecessary the locking of said closing means of the door just after the beginning of operation as it can be realized only when the machine works at certain cycles when an unintentional opening of the door may cause damage to the user, thus limiting the locking of the door to centrifrugation operations which as we know, in modern machines occur at elevated speed.
  • the first aim of this finding is to overcome this inconvenience and exclude any possible or even volontary tampering with the device guaranteeing maximum safety, offering a locking device which is substantially mechanical in which the contacts of the series switch are closed only after the door has been securely closed;
  • the second aim of the finding is that of presenting an extremely simple device which also guarantees a lasting and safe functioning;
  • the third aim is that of the automatic opening of the door occuring simultaneously to the unlocking;
  • the fourth aim is that with the addition of a device on the feeding circuit of the current to the feeding means of the locking device, its use can be extended to operate on machines working with traditional elettromechanical programmers.
  • the invention consists in using: as a retainer for the look of the door, a block swinging around its axis capable of rotating while closing under the thrust exercized on it by the hook of the door and coupling with it so that the hook can be no longer drawn out after the locking of the swinging gauge block, said swinging gauge block being assembled onto a small shaft arranged according to the rotation axis of same swinging block, the small shaft in turn bears a second small cylindrical block cam shaped onto which side face opposite to the one facing the first block, is also obtained a cavity to house the end of a locking bolt fit to move parallel to the axis of said small shaft containing the blocks, the locking bolt working on the movable contact of the series switch with the opposite end, so that when the end of the locking bolt is inserted in the cavity of the cam it induces locking and therefore that of the retainer block of the look, the working of the various parts of the device being obtained by means of the movement of two boxes, movable according to the axis of the block shaft, of which one has an app
  • Fig. 1 - represents the device turned off, that is with the door open seen at a flat cross section.
  • Fig. 2 - a section according to B-B of fig. 1 representing the hook of the door and the locking block of the looh with the door open.
  • Fig. 3 - a section according to A-A of fig. 1 representing the two boxes responsible for the movement of the various parts of the device and the drive cam of the same when the device is open.
  • Fig. 4 - represents the device when locked, that is with the door closed and hook locked in a flat section view.
  • Fig. 5 - a section according to B-B of fig. 4 representing the hook of the door, and the locking block of the hook with the door closed.
  • Fig. 6 - a section according to A-A of fig. 4 representing the two boxes specific for the movement of the various parts of the device and the driving cam of the same when device is closed.
  • Fig. 7 - represents how the device works during unlocking that is as it occurs when the contacts of the series switch are opened; the unlocking of the door.
  • Fig. 9 - a section according to A-A of fig. 7 showing the reciprocal position of the two boxes of movement. Furthermore, in two successive drawings is illustrated a variation of the invention that is, how said device can be applied also to washing machines with electrmeccanical programmer applying a component to the device according to the invention, and using a particular electric waring diagram.
  • Fig. 10 the device in locking position with the component allowing it to be applied to washing machines with electromeccanic programmer.
  • Fig. 11 the relative electric waring diagram for the functioning of the device according to the variation of fig. 10.
  • slide box 14 recoils causing rotation in the opposite direction of the cam 7 and therefore of gauge block 4 locking hook 5 which is pushed outside causing the automatic opening of the door, and at the same time with its arm 18 drags slide box 13 backwards allowing the lever arm 19 connected to the head of the small piston 22 of the electromagnet to be drawn downwards.
  • the electromagnet 23 can be actuated manually, working on the push button placed on the control holder panel of the machine, when the machine is not working or when it has reached a stage of the cycle allowing this operation, or automatically when the cycle has finished using a control accepted by the processor.
  • P.T.C. 30 thus corrected to the coil of the electromagnet also performs the function of protecting the electric winding of the same coil, in that in case of accidental prolonged feeding of electric current to the coil of the electromagnet due to damage of the programmer or of the microswitch 11, it is sufficient to induce heating of P.T.C. 30 and consequently the interruption of the current to the electromagnet 23.
  • the opening is actuated by the mobile contact plate 43 of a microswitch, by means of a rocker arm 42 moved by a bi-metallic strip 40 suitably electrically heated, an appropriate part of the mobile contact plate 43 of the microswitch being, in its turn, subjected to the load of an eccentric ratchet 44, said load having the function, by increasing and decreasing, of correcting the insertion time and the delayed opening of the door-lock, the bimetallic strip being heated by means of a PTC 41, and the bimetallic strip 40, the PTC 41 and the rocker arm 42 simply resting on one another in order to quarantee, for theese conditions, that the curving and straightening times of the bimetallic strip 40 remain stable through time.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Centrifugal Separators (AREA)
  • Coin-Freed Apparatuses For Hiring Articles (AREA)
  • Toys (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Lock And Its Accessories (AREA)
EP90203047A 1989-12-18 1990-11-16 Dispositif de verrouillage de porte avec verrouillage rapide et déverrouillage retardé, notamment d'une machine à laver Expired - Lifetime EP0439849B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2272989 1989-12-18
IT02272989A IT1236884B (it) 1989-12-18 1989-12-18 Dispositivo per il bloccaggio dei mezzi di chiusura ed apertura dei portelli di macchine aventi nell'interno parti soggette a rotazione inerziale realizzante la chiusura e l'apertura dei contatti dell'interruttore serie rispettivamente posticipata ed anticipata al bloccaggio del portello

Publications (2)

Publication Number Publication Date
EP0439849A1 true EP0439849A1 (fr) 1991-08-07
EP0439849B1 EP0439849B1 (fr) 1997-05-07

Family

ID=11199750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90203047A Expired - Lifetime EP0439849B1 (fr) 1989-12-18 1990-11-16 Dispositif de verrouillage de porte avec verrouillage rapide et déverrouillage retardé, notamment d'une machine à laver

Country Status (4)

Country Link
EP (1) EP0439849B1 (fr)
AT (1) ATE152790T1 (fr)
DE (1) DE69030652D1 (fr)
IT (1) IT1236884B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600390A1 (fr) * 1992-12-01 1994-06-08 Carlo Gavazzi AG Structure de verrouillage de sécurite d'une porte en particulier pour les machines à laver avec un système électronique incorporé
US6082787A (en) * 1997-12-22 2000-07-04 Bitron S.P.A. Locking and unlocking device of the door of a domestic electrical appliance
EP1039012A1 (fr) * 1999-03-22 2000-09-27 Siber B.V. Système de verrouillage de sécurité d'une porte, en particulier pour les machines à laver avec un système électronique incorporé
EP1808558A2 (fr) * 2006-01-16 2007-07-18 BITRON S.p.A. Appareil ménager électrique avec une porte comprenant un dispositif de verrouillage à commande électrique
WO2009007802A1 (fr) 2007-07-10 2009-01-15 Indesit Company S.P.A. Dispositif et procédé de verrouillage et de déverrouillage de la porte d'un appareil ménager
CN103228835A (zh) * 2010-10-05 2013-07-31 比特龙有限公司 用于家用器具的门锁定装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017128301B3 (de) 2017-11-29 2019-01-24 Kendrion Kuhnke Automation Gmbh Verriegelungsvorrichtung
EP4033057B1 (fr) 2021-01-22 2023-09-20 Kendrion Kuhnke Automation GmbH Dispositif de verrouillage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942515B1 (de) * 1979-10-20 1980-10-16 Trumpf Schloss & Beschlag Verschluss fuer Tueren an elektrisch betriebenen Haushaltsgeraeten
WO1988005476A1 (fr) * 1987-01-27 1988-07-28 Onofrio Rocchitelli Verrou de porte, pour machine a laver en particulier

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2942515B1 (de) * 1979-10-20 1980-10-16 Trumpf Schloss & Beschlag Verschluss fuer Tueren an elektrisch betriebenen Haushaltsgeraeten
WO1988005476A1 (fr) * 1987-01-27 1988-07-28 Onofrio Rocchitelli Verrou de porte, pour machine a laver en particulier

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0600390A1 (fr) * 1992-12-01 1994-06-08 Carlo Gavazzi AG Structure de verrouillage de sécurite d'une porte en particulier pour les machines à laver avec un système électronique incorporé
US6082787A (en) * 1997-12-22 2000-07-04 Bitron S.P.A. Locking and unlocking device of the door of a domestic electrical appliance
EP1039012A1 (fr) * 1999-03-22 2000-09-27 Siber B.V. Système de verrouillage de sécurité d'une porte, en particulier pour les machines à laver avec un système électronique incorporé
EP1808558A2 (fr) * 2006-01-16 2007-07-18 BITRON S.p.A. Appareil ménager électrique avec une porte comprenant un dispositif de verrouillage à commande électrique
EP1808558A3 (fr) * 2006-01-16 2013-04-24 BITRON S.p.A. Appareil ménager électrique avec une porte comprenant un dispositif de verrouillage à commande électrique
WO2009007802A1 (fr) 2007-07-10 2009-01-15 Indesit Company S.P.A. Dispositif et procédé de verrouillage et de déverrouillage de la porte d'un appareil ménager
CN103228835A (zh) * 2010-10-05 2013-07-31 比特龙有限公司 用于家用器具的门锁定装置
CN103228835B (zh) * 2010-10-05 2016-10-12 比特龙有限公司 用于家用器具的门锁定装置

Also Published As

Publication number Publication date
ATE152790T1 (de) 1997-05-15
IT8922729A0 (it) 1989-12-18
IT8922729A1 (it) 1991-06-18
DE69030652D1 (de) 1997-06-12
EP0439849B1 (fr) 1997-05-07
IT1236884B (it) 1993-04-26

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