EP0483697A1 - Verrouillage magnétique - Google Patents

Verrouillage magnétique Download PDF

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Publication number
EP0483697A1
EP0483697A1 EP91118277A EP91118277A EP0483697A1 EP 0483697 A1 EP0483697 A1 EP 0483697A1 EP 91118277 A EP91118277 A EP 91118277A EP 91118277 A EP91118277 A EP 91118277A EP 0483697 A1 EP0483697 A1 EP 0483697A1
Authority
EP
European Patent Office
Prior art keywords
armature
magnetic
closure according
magnet coil
magnetic closure
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.)
Withdrawn
Application number
EP91118277A
Other languages
German (de)
English (en)
Inventor
Rolf BRÜCKNER
Friedhelm Geuer
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.)
Ymos AG Industrieprodukte
Original Assignee
Ymos AG Industrieprodukte
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 Ymos AG Industrieprodukte filed Critical Ymos AG Industrieprodukte
Publication of EP0483697A1 publication Critical patent/EP0483697A1/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a magnetic lock for a household machine, in particular for the door of a washing machine with the features of the preamble of claim 1.
  • Such a magnetic lock has, for example, a spring-loaded locking hook on the door side and a movable locking element for the locking hook and other mechanical and electrical switching and securing elements that can be locked and released with the aid of a magnetic coil and its armature on the washing machine housing.
  • the door is locked immediately upon closing, for which purpose the locking element movably arranged in a lock housing is the sprung one Engages behind the locking hook.
  • the magnetic coil circuit To open the magnetic coil circuit must be closed using a button. For safety reasons, this circuit is interrupted during the washing program.
  • a disadvantage of this known magnetic closure is that it can only be opened when electrical current is available. This is e.g. often not sufficiently available in sales rooms.
  • Another known magnetic lock for washing machines is provided with an oscillating armature and two magnetic coils, so that it can be both opened and closed electrically.
  • This known magnetic lock has a large number of electrical components and two limit switches mounted on a circuit board. The manufacturing cost of this magnetic closure is therefore considerable.
  • the invention has for its object to provide a magnetic closure of the type of interest here, which has only a single magnetic coil, which can be opened and closed electrically, which has no expensive electrical components, which is easy to assemble and consists of a few components and can be equipped with a mechanically effective element for emergency opening.
  • the invention provides that two end positions are provided for the armature, in which it can be mechanically fixed in the magnet coil, that the magnetic force moving the armature in the magnet coil is greater than the holding force fixing the armature in the end positions, that the magnetic force moving the armature pulls it in the direction of an intermediate position between the two mechanically fixable end positions and that the circuit in the magnet coil is interrupted as soon as the armature has moved away from its respective end position while overcoming the mechanically fixating holding force and has sufficient acceleration to to move to the other end position.
  • the current flows through the solenoid for only a short time. It is hereby achieved that the armature moves away from its first stable end position due to the magnetic force, but then does not remain in an electromagnetically stable intermediate position, but continues to move into its second, likewise mechanically stabilized end position. By opening the circuit in time, the magnetic field collapses and the armature continues to move into the second end position due to its speed and mass. In the first and in the second end position, the armature is held in a stable form purely mechanically, preferably with the aid of a spring element. For this purpose, the armature is directly or indirectly connected to the spring element at its ends.
  • a magnetic lock 1 intended, for example, for the door of a washing machine comprises a locking hook 2 which is preferably resiliently arranged in the door and preferably parts which are arranged in the washing machine housing and lock and secure the locking hook 2 in the closed position according to FIG. 4.
  • the magnetic lock 1 has a striking plate 3 with an opening 4 or a wall with an opening 4, the edge of which is engaged by the locking hook 2 in the closed position according to FIG. 4.
  • a locking element 5 is used for this purpose, which is slidably arranged behind the striking plate 3 and is acted upon in the opening direction by a spring 6 such that a recess 7 in the blocking element 5 is immediately behind the opening 4 in the striking plate 3 when the magnetic lock 1 is open (FIGS. 1 and 2 ).
  • the spring 2a assigned to the locking hook 2 is stronger than the spring 6.
  • the locking hook 2 When the door closes, the locking hook 2 enters with its free end 8 through the opening 4 in the locking plate 3 and into the recess 7 of the locking element 5 and then shifts it against the force of the spring 6 due to a spring acting on it, not shown in the figures 4.
  • the locking element 5 In the position shown in FIG. 4, the locking element 5 is then locked, for which purpose a solenoid 9 with an armature 10 is provided, which has one free end 11 directly in a further recess 12 in the locking element 5 can occur as soon as a selected washing program is switched on. If the free end 11 of the armature 10 is in the recess 12 of the locking element 5, the locking element 5 is immovably locked, with the result that it also holds the locking hook 2 in the closed position according to FIG. The door cannot therefore be opened.
  • the locking element 5 can in principle be moved again, so that the door can be opened with the aid of an actuation button (not shown in the figures).
  • the locking hook 2 is pivoted clockwise against the force of the spring acting on it in FIG. 4, the locking element 5 being moved positively and due to the spring 6 acting on it with its recess 7 behind the opening 4 in the locking plate 3. The door can then be opened.
  • two end positions A and B are provided for the armature 10 as shown in FIGS. 1 and 3.
  • the locking element 5 is unlocked
  • the locking element 5 is locked
  • the armature 10 assumes a stable position, for which purpose mechanically effective parts are provided.
  • the magnetic closure 1 has a spring element 13.
  • this spring element 13 is a dead center spring and acts on a lever 14 which is connected via an arm 15 and a rod 16 to the end 17 of the armature 10 facing away from the locking element 5.
  • the rod 16 is articulated both on the free end 15 of the lever 14 and on the free end 17 of the armature 10.
  • the spring element 13 holds the armature 10 in a non-positive manner in both end positions A and B via the lever 14 and the rod 16.
  • Neither of these end positions A and B corresponds an electromagnetically stable position of the armature 10 in the magnet coil 9 when the circuit is closed.
  • the electromagnetically stable position of the armature 10 in the magnet coil 9 corresponds to an intermediate position C between the two mechanically stable end positions A and B corresponding to the line C in FIGS. 1 and 3.
  • the current flows in the magnet coil 9 only briefly.
  • the magnet coil 9 is energized so that the armature 10 leaves the end position A or B in the direction of the intermediate position C.
  • the circuit is interrupted again in good time so that the armature 10 reaches the other end position A or B due to its acceleration and mass and taking into account the spring element 13 or the dead center spring 13, which initially acts as a brake but then serves as an aid .
  • the circuit 10 is also interrupted by the armature 10 or is controlled by it. This is done according to the embodiment in that two actuating cams 42, 43 arranged on the lever 14, between which the arm 41 lies with the contact 24, presses the latter either onto the contact 25 or 27.
  • FIGS. 1 and 3 The parts required for switching on the coil circuit and for immediate switching off are also shown in FIGS. 1 and 3.
  • a main switch 18 is provided, which is also connected to the one pole 20 of the magnet coil 9 via a contact tab 19.
  • One connects to the other pole 21
  • the switch 23 is a changeover switch and is controlled indirectly by the armature 10 and directly by the lever 14.
  • the contact 24 of the switch 23 bears either on a contact 25 of a contact tab 26 or on a contact 27 of a contact tab 28.
  • the two contact lugs 26 and 28 are connected to a program switching mechanism, not shown in the figures and not of interest here.
  • the main switch 18 comprises a movable contact arm 29 with a contact 30 and a non-movable contact 31 on a contact lug 32 which, like the other contact lug 33 of the main switch 18, is connected to the program switching mechanism (not shown).
  • the main switch 18 When the locking element 5 is unlocked, the main switch 18 is open. As soon as the locking hook 2 moves the locking element 5 into the closed position according to FIG. 4, a switching lug 34 on the locking element 5 closes the main switch 18, for which purpose the locking lug 34 strikes the movable contact arm 29, which is designed in a known manner as a spring element, and so on pivots that its contact 30 comes to rest on the contact 31 of the contact tab 32. At the same time, the contact 24 of the switch 23 bears against the contact 25 of the contact lug 26. A current can now basically flow through the magnet coil 9. As soon as this current excites the solenoid 9 due to the further control by the program switching mechanism, it pulls the armature 10 from the end position A towards the intermediate position C.
  • a pivoting of the lever 14 is associated with the movement of the armature 10. This therefore opens with its actuating cam 42, which presses the arm 41 downwards, contacts 24 and 25 and closes contacts 24 and 27 in the further course after overcoming intermediate position C.
  • the energization of solenoid 9 takes place only via a very short pulse and solenoid 9 is after Switching the switch 23 serving as a changeover switch immediately without current again.
  • the acceleration and mass of the armature 10 and the deformation of the dead center spring 13 that has already taken place are now sufficient to make the dead center spring 13 jump into its other end position and the armature 10 in this end position is stable and non-positive after reaching the other end position B according to FIG. 3 to keep.
  • the contact flag 28 is supplied with current either automatically or manually by means of a pushbutton.
  • the solenoid 9 therefore receives a current pulse, which in turn acts only briefly until the armature 10 pivots the lever 14. This opens the contacts 24 and 27 with the actuating cam 43 and subsequently closes the contacts 24 and 25 after overcoming the intermediate position C.
  • the armature 10 with its free end 11 has left the recess 12 in the locking element 5 and is now again in its end position A according to FIG. 1.
  • the locking element 5 is now unlocked again, so that the locking hook 2 can be pivoted into the open position.
  • a particularly flat design is achieved if the anchor 10 is displaceable in the same plane as the locking element 5 and transversely to it, and the design is designed as a flat anchor.
  • All parts of the magnetic closure are expediently housed in a housing 35, from which only a second arm 36 of the lever 14, which can be pivoted about an axis 37, projects with its free end 38.
  • the lever 14 can be adjusted at any time via this second arm 36, so that the armature 10 can be pulled out of its end position B locking the locking element 5 even when no current is available.
  • the magnetic lock 1 therefore also has an emergency opening option.
  • a pulling element 39 can be articulated on the free end 38 of the second arm 36 of the lever 14 and be accessible with its free end 40 after opening a revision flap. In the event of a defect or power failure, the locking of the blocking element 5 can be released via the pulling element 39.
  • the spring element 13 provided for generating the holding force in the two end positions A and B is fixed on the one hand to the lever 14 and extends through an elongated hole 44 in the lever 14 which extends along a circular arc piece to the axis 37 of the lever 14.
  • the function of the mode of operation is also a precise coordination of the dead center spring 13 with the two actuating cams 42, 43.
  • the distance between the actuating cams 42 and 43 is selected so that the respective shutdown takes place at the time of the greatest speed of the armature 10.
  • the spring element 13 can be a U-shaped spring wire, the legs of which are first compressed when pivoted to produce a spring tension. When pivoting further, the legs open again and release the tension.
  • Conceivable embodiments for dead center spring elements are also molded plastic springs, permanent magnets or ball catches.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Electromagnets (AREA)
EP91118277A 1990-11-02 1991-10-26 Verrouillage magnétique Withdrawn EP0483697A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4034853A DE4034853C2 (de) 1990-11-02 1990-11-02 Magnetverschluß
DE4034853 1990-11-02

Publications (1)

Publication Number Publication Date
EP0483697A1 true EP0483697A1 (fr) 1992-05-06

Family

ID=6417517

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118277A Withdrawn EP0483697A1 (fr) 1990-11-02 1991-10-26 Verrouillage magnétique

Country Status (2)

Country Link
EP (1) EP0483697A1 (fr)
DE (1) DE4034853C2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588041A1 (fr) * 1992-09-17 1994-03-23 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Arrangement de verrouillage de porte pour machines a laver
EP0808935A2 (fr) * 1996-05-22 1997-11-26 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Machine à laver avec dispositif de verrouillage de porte à action instantanée
EP1113103A2 (fr) * 1999-12-29 2001-07-04 Lg Electronics Inc. Verrouillage de porte pour machine à laver à tambour
WO2005106099A1 (fr) 2004-04-27 2005-11-10 Marquardt Gmbh Verrou pour appareil menager
WO2006063684A1 (fr) * 2004-12-16 2006-06-22 Emz-Hanauer Gmbh & Co. Kgaa Serrure de porte pour la porte d'un appareil menager
KR100697223B1 (ko) 2005-01-12 2007-03-21 (주)엔티텍 드럼세탁기의 도어로커장치
EP1939378A2 (fr) * 2006-10-09 2008-07-02 Dometic GmbH Dispositif de fermeture pour le verrouillage de l'espace intérieur d'un appareil et appareil doté d'un dispositif de fermeture
EP2278058A1 (fr) * 2009-07-17 2011-01-26 Elettrotecnica Rold Srl Dispositif de verrouillage pour la fermeture de la porte de hublot de machines à laver et à sécher

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006052428A1 (de) 2006-11-07 2008-05-08 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur Pflege von Wäschestücken, insbesondere Wäschetrockner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH458268A (de) * 1966-01-17 1968-06-30 Philips Nv Vorrichtung zur Sicherung der Tür oder des Deckels einer Wasch- oder Geschirrspülmaschine im geschlossenen Zustand während des Betriebes
EP0007637A1 (fr) * 1978-08-02 1980-02-06 Ellenberger & Poensgen GmbH Dispositif de verrouillage des portes d'appareils ménagers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2515161C3 (de) * 1975-04-08 1979-05-17 Waldemar H. 4000 Duesseldorf Kurpanek Steuerbarer, in der Offen- bzw. Schließlage durch Dauermagnete gehaltener Schubriegel eines Schlosses
IT1136453B (it) * 1980-07-24 1986-08-27 Zanussi Grandi Impianti Spa Dispositivo di sicurezza per l'appertura della porta di macchine lavatrici o simili,in particolare del tipo industriale

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH458268A (de) * 1966-01-17 1968-06-30 Philips Nv Vorrichtung zur Sicherung der Tür oder des Deckels einer Wasch- oder Geschirrspülmaschine im geschlossenen Zustand während des Betriebes
EP0007637A1 (fr) * 1978-08-02 1980-02-06 Ellenberger & Poensgen GmbH Dispositif de verrouillage des portes d'appareils ménagers

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0588041A1 (fr) * 1992-09-17 1994-03-23 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Arrangement de verrouillage de porte pour machines a laver
EP0808935A2 (fr) * 1996-05-22 1997-11-26 ELECTROLUX ZANUSSI ELETTRODOMESTICI S.p.A. Machine à laver avec dispositif de verrouillage de porte à action instantanée
EP0808935A3 (fr) * 1996-05-22 1998-08-05 Electrolux Zanussi S.p.A. Machine à laver avec dispositif de verrouillage de porte à action instantanée
EP1113103A2 (fr) * 1999-12-29 2001-07-04 Lg Electronics Inc. Verrouillage de porte pour machine à laver à tambour
EP1113103A3 (fr) * 1999-12-29 2001-09-12 Lg Electronics Inc. Verrouillage de porte pour machine à laver à tambour
US7549685B2 (en) 2004-04-27 2009-06-23 Marquardt Gmbh Lock for a household appliance
WO2005106099A1 (fr) 2004-04-27 2005-11-10 Marquardt Gmbh Verrou pour appareil menager
WO2006063684A1 (fr) * 2004-12-16 2006-06-22 Emz-Hanauer Gmbh & Co. Kgaa Serrure de porte pour la porte d'un appareil menager
KR100923146B1 (ko) * 2004-12-16 2009-10-23 이엠젯-하나우어 게엠베하 운트 체오. 카게아아 가전 제품 도어를 위한 도어 잠금 장치
US8991877B2 (en) 2004-12-16 2015-03-31 Emz-Hanauer Gmbh & Co. Kgaa Door lock for the door of a household appliance
KR100697223B1 (ko) 2005-01-12 2007-03-21 (주)엔티텍 드럼세탁기의 도어로커장치
EP1939378A2 (fr) * 2006-10-09 2008-07-02 Dometic GmbH Dispositif de fermeture pour le verrouillage de l'espace intérieur d'un appareil et appareil doté d'un dispositif de fermeture
EP1939378A3 (fr) * 2006-10-09 2008-07-09 Dometic GmbH Dispositif de fermeture pour le verrouillage de l'espace intérieur d'un appareil et appareil doté d'un dispositif de fermeture
EP2278058A1 (fr) * 2009-07-17 2011-01-26 Elettrotecnica Rold Srl Dispositif de verrouillage pour la fermeture de la porte de hublot de machines à laver et à sécher
CN102061597A (zh) * 2009-07-17 2011-05-18 电工技术罗尔德股份公司 一种用于锁定洗衣机和烘干机的舷窗式门的设备

Also Published As

Publication number Publication date
DE4034853C2 (de) 1998-08-06
DE4034853A1 (de) 1992-05-07

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