EP0007637B1 - Dispositif de verrouillage des portes d'appareils ménagers - Google Patents

Dispositif de verrouillage des portes d'appareils ménagers Download PDF

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Publication number
EP0007637B1
EP0007637B1 EP19790102685 EP79102685A EP0007637B1 EP 0007637 B1 EP0007637 B1 EP 0007637B1 EP 19790102685 EP19790102685 EP 19790102685 EP 79102685 A EP79102685 A EP 79102685A EP 0007637 B1 EP0007637 B1 EP 0007637B1
Authority
EP
European Patent Office
Prior art keywords
plunger
locking device
transmission member
pin
movement
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.)
Expired
Application number
EP19790102685
Other languages
German (de)
English (en)
Other versions
EP0007637A1 (fr
Inventor
Fritz Krasser
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.)
Ellenberger and Poensgen GmbH
Original Assignee
Ellenberger and Poensgen GmbH
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 Ellenberger and Poensgen GmbH filed Critical Ellenberger and Poensgen GmbH
Publication of EP0007637A1 publication Critical patent/EP0007637A1/fr
Application granted granted Critical
Publication of EP0007637B1 publication Critical patent/EP0007637B1/fr
Expired 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7062—Electrical type [e.g., solenoid]
    • Y10T70/7113—Projected and retracted electrically

Definitions

  • the invention relates to a locking device for doors of household machines, in particular washing machines, according to the preamble of claim 1.
  • Electrically operated locking devices which are used in particular in washing machine doors, are already known, for example from DE-A-22 58 812.
  • the known locking devices have a housing for accommodating the electrical and mechanical switching parts and a plunger which can usually be moved transversely to the longitudinal direction of the housing on, which is the actual locking member.
  • the tappet is moved with the aid of bimetal strips.
  • an electromagnet is additionally provided, which quickly moves the plunger into the locking position when excited.
  • the mechanical locking of this position is carried out by an angle lever which is carried by the force of a torsion spring when the plunger is displaced and to which a pin is attached which engages behind a retaining lug when the plunger end position is reached and engages there.
  • the plunger is pushed back into the unlocking position with the aid of a bimetal strip, which pushes the aforementioned retaining lug back through its bending movement and thus unlocks the rotary lever together with the pin.
  • a closure for household machine covers, doors and.
  • Known which has an electromagnetic actuator with return spring to which a lever mechanism with fork latch and locking lever is connected.
  • the electromagnetic actuator is energized for the purpose of unlocking, the pulse z. B. is triggered by a push button switch.
  • the locking member is moved mechanically into the opposite position, i.e. the locking, by the fork latch and the locking lever.
  • Semi-electronic or also fully electronic control circuits are used in washing machines of a more recent design, which operate, for example, with the aid of microprocessors.
  • the locking device for the washing machine door receives its commands exclusively in the form of pulses, both for the locking and for the unlocking.
  • the invention has for its object to design a locking device for doors of household machines, in particular washing machines, so that it can be controlled only by pulses, the plunger being shifted alternately into a stable locking position or in a stable unlocking position after each pulse. This object is achieved by the features in the characterizing part of claim 1.
  • a preferred embodiment of the locking device is specified, which is characterized by a particularly simple structure and in which only a few parts are used.
  • a further preferred embodiment of the locking device is specified in subclaim 3, which has the particular advantage over the embodiment according to claim 2 that it remains securely in the respectively intended end position even in the event of strong vibrations.
  • preferred configurations of the locking device are described which are suitable for increasing the operational reliability of the device and / or the simplicity of assembly with the simplest design.
  • a housing shell 1 is shown, in which all functionally important parts are already inserted. After assembly, the housing shell 1 is closed with a cover, not shown, which is plugged onto pins formed on the housing shell and then fastened, for example, by hot upsetting the pins or even only by gluing.
  • the locking device also has a plunger 12 which is connected via a bearing rod 12b to an extension 14 arranged in the interior of the housing shell 1.
  • this has a further bearing rod 12a.
  • the plunger 12, the bearing rods 12a and 12b and the extension 14 can be pushed back and forth in the direction of a double arrow 31.
  • the extension 14 must be shorter than the inside clear width of the housing shell 1.
  • Electromagnet arranged, which consists of a coil body 2, an excitation winding 3, a magnetic yoke 6 and an armature 7.
  • the connection ends 4 and 4 'of the excitation winding 3 are electrically connected to connection pins 5 and 5'.
  • the armature 7 is mounted in the direction of a double arrow 30 in the interior of the coil body 2. Locking devices for doors of household machines with a plunger which is mounted in the device housing and which can be displaced between two end positions, and an electromagnet acting on the plunger position are known per se.
  • the switching device has, in addition to the extension 14, a slide 8 with a molded-on flag 13 and a compression spring 9, which is arranged between a pin 11 formed on the slide 8 and a pin 11 b projecting from the extension 14.
  • a stop surface oriented towards the slide 8 in the form of an inverted W, which is arranged symmetrically to the pin 11b.
  • the stop surface consists of two inclined surfaces 15a and 15b arranged on both sides of the pin 11 and running in opposite directions and of two adjoining inclined surfaces 16a and 16b extending towards the slide.
  • an extension 19 is formed on the extension 14 of the plunger 12, on or in which a contact bridge 20 is formed;
  • this contact bridge 20 is assigned two connections 21 and 21 '.
  • Fig. 1 is open in the pronounceverried l-line position of the signal circuit, while it is closed in the locked position of FIG. 2.
  • this signal circuit With the help of this signal circuit, the mechanical locking or unlocking of the control can be indicated by the respective contact position. This signal circuit can then be used to detect faults in the locking device.
  • the locking device works as follows: If the plunger 12 and the extension 14 are in the position shown in FIG. 1, this corresponds to the “unlocked” position. In this case, the extension 14 lies with its left end face against the corresponding wall of the housing shell 1 and is held in this position by the compression spring 9 in that the pin 11b of the extension 14 is offset somewhat to the left relative to the longitudinal axis 17 in FIG. 1 , while the pin 11 on the slide 8, against which the other end of the compression spring 9 is supported, lies exactly on the longitudinal axis 17 of the housing.
  • the spring 9 When the excitation winding is switched off after the excitation pulse has ended, the spring 9 then pushes the slide 8 and thus also the armature 7 downward until the armature 7 abuts the lower stop 10 in FIG. 1. Since the pin 11b has now been moved so far to the right as a result of the displacement of the extension 14 that it lies to the right of the longitudinal axis 17 of the housing, the spring 9 presses the extension 14 into the position shown in FIG. 2, in which the right end face of the extension rests on the corresponding housing inner wall. The plunger 12 and the extension 14 are then in a stable position.
  • the pin 11 of the slide 8 is advantageously arranged on the longitudinal axis 17 of the housing, which is also the axis of the slide 8.
  • the pin 11b on the extension 14 must lie next to the longitudinal axis 17, the distance between the center of the pin 11b and the longitudinal axis 17 preferably being smaller than the displacement path of the extension 14.
  • a so-called leg spring is advantageously used as the compression spring 9. Springs of this type are generally known and are particularly suitable for assembly due to their simple construction.
  • the slide 8 and the flag 13 can advantageously be made in one piece from plastic. This then creates a compact assembly unit that can be easily inserted into the open housing shell 1.
  • FIGS. 4 to 6 a further improved embodiment of the locking device has been created, which will now be described with reference to FIGS. 4 to 6.
  • the same parts are denoted by the same reference numerals and corresponding parts are denoted by the same reference numerals provided with a dash index.
  • the main difference between the embodiment according to FIGS. 1 to 3 and the embodiment according to FIGS. 4 to 6 is that between the extension 14 'and the slide 8' a switching part 22 is arranged, which is about a fixed bearing pin 23 of the housing shell 1 is stored.
  • the switching part 22 has on the side facing the extension 14 'a fork-like incision 24 which partially engages around the pin 11b' projecting from the extension 14 '.
  • a stop surface oriented towards the slide 8 ' is formed in the form of an inverted W, which is symmetrical to the bearing pin 23 on the changeover part 22 and in particular the inclined surfaces 15a', 15b ', 16a' and 16b 'which, in the first embodiment, correspond to the corresponding surfaces 15a, 15b, 16a and 16b of the stop surface formed on the extension 14.
  • an extension 22a is formed on the upper side of the switching part 22.
  • An S-shaped compression spring 9 ' is inserted between the shoulder 22a and the pin 11a' on the slide 8 '.
  • the shape of the slide 8 'in FIGS. 4 to 6 has been changed somewhat compared to the shape of the slide 8 in FIGS. 1 to 3 in order to improve its mobility with the least possible application of force.
  • the operation of the second embodiment is basically the same as that of the first embodiment.
  • the armature 7 is drawn into the magnetic field and then abuts with its upper end face against the slide 8 'and moves it upward against the force of the S-shaped compression spring 9'.
  • the flag 13 ' which is also made of compression-resistant but elastic material, is pushed against the inclined surface 15a' of the stop surface of the switching part 22, is deflected by the latter and abuts against the steeper, inclined surface 16a 'on the switching part 22.
  • an extension 19 ' is formed on the extension 14', on or in which the contact bridge 20 'is accommodated.
  • Connections 21 and 21 ' are again assigned to this contact bridge as in the first embodiment, so that the corresponding position of the locking device is indicated by the respective contact position of the signal bridge 20' with respect to the contact connections 21 and 21 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Electromagnets (AREA)
  • Push-Button Switches (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)
  • Lock And Its Accessories (AREA)

Claims (11)

1. Dispositif de verrouillage pour portes d'appareils électroménagers, en particulier de machines à laver, comprenant un poussoir ou pène (12, 12') monté dans la boîte (1) du dispositif et pouvant coulisser entre deux positions de fin de course, de même qu'un électro-aimant agissant sur la position du pène, caractérisé en ce que l'armature (7) de l'électro-aimant, chargée par un ressort de compression (9, 9'), peut être manoeuvrée par des impulsions en vue du verrouillage et du déverrouillage ou libération du dispositif de verrouillage et en ce que l'armature (7) est reliée par action de force au pène (12, 12') par un dispositif de basculement ou d'inversion (11 a, 11b, 13, 14, 11 a', 11b', 13', 14', 22 à 24) commandé par un poussoir (8, 8') coulissant dans le sens de mouvement de l'armature, le dispositif de basculement et avec lui le pène prenant chaque fois l'une de deux positions de fin de course stables.
2. Dispositif de verrouillage selon la revendication 1, caractérisé en ce que le dispositif de basculement bistable possède un prolongement (14) relié au pène (12), les sens de coulissement du poussoir (8) et du prolongement (14) étant perpendiculaires, en ce que le poussoir (8) et le prolongement (14) présentent chacun une cheville (11 a) respectivement (11b), entre lesquelles est disposé le ressort de compression (9), en ce que le prolongement (14) présente une surface de butée (15a, 15b, 16a, 16b) en forme de W inversé, qui est dirigée vers le poussoir (8), et en ce que le poussoir (8) porte une palette flexible (13) en matériau résistant à l'écrasement, qui s'étend jusqu'à proximité de la surface de butée (15a, 15b, 16a, 16b) du prolongement (14).
3. Dispositif de verrouillage selon la revendication 1, caractérisé en ce que le dispositif de basculement bistable possède un prolongement (14') relié au pène (12'), les sens de coulissement du poussoir (8') et du prolongement (14') étant perpendiculaires, en ce qu'une pièce d'inversion (22) est disposée rotative autour d'un axe (23) de la boîte (1) du dispositif entre le prolongement (14') et le poussoir (8'), la pièce d'inversion (22) présentant une fourchette (24) par laquelle elle entoure partiellement une cheville (11b') faisant saillie du prolongement (14') et la pièce d'inversion (22) présentant d'un côté une surface de butée en W inversé (15a', 15b', 16a', 16b') dirigée vers le poussoir (8') et de l'autre côté une protubérance (22a) dirigée vers le poussoir (8'), en ce que le ressort de compression (9') est à peu près en S et est disposé entre la protubérance (22a) de la pièce d'inversion (22) et la cheville (11 a') du poussoir (8') et en ce que le poussoir (8') porte une palette (13') en metière plastique résistante à l'écrasement et s'étendant jusqu'à proximité de la surface de butée (15a', 15b', 16a', 16b') de la pièce (22).
4. Dispositif de verrouillage selon la revendication 2, caractérisé en ce que la surface de butée (15a, 15b, 16a, 16b) dirigée vers le poussoir (8) est disposée symétriquement par rapport à la cheville (11 b) sur le prolongement (14).
5. Dispositif de verrouillage selon la revendication 3, caractérisé en ce que la surface de butée (15a', 15b', 16a', 16b') dirigée vers le poussoir (8') est disposée symétriquement par rapport à l'axe (23) de la pièce d'inversion (22).
6. Dispositif de verrouillage selon la revendication 1 et la revendication 2 ou 3, caractérisé en ce que l'axe longitudinal (17) du poussoir (8; 8') coincide avec l'axe longitudinal de l'armature (7) et en ce que la face d'extrémité supérieure de l'armature (7) s'applique contre la face d'extrémité inférieure du poussoir (8; 8').
7. Dispositif de verrouillage selon l'une des revendications précédentes, caractérisé en ce que le prolongement (14; 14') présente deux barrettes de guidage (12a, 12b; 12a', 12b') qui sont disposées mobiles dans des ouvertures de la boîte (1) et en ce que l'une des barrettes (12b; 12b') forme la liaison entre le prolongement (14; 14') et le pène (12; 12').
8. Dispositif de verrouillage selon l'une des revendications précédentes, caractérisé en ce que la cheville (11 a; 11 a') du poussoir (8; 8') est située sur l'axe de coulissement (17) et la cheville (11 b; 11 b') du prolongement (14; 14') est située à côté de cet axe, la distance entre le centre de la cheville (11b; 11b') et l'axe de coulissement (17) étant plus petite que la course du prolongement (14; 14').
9. Dispositif de verrouillage selon la revendication 2, caractérisé en ce que le ressort de compression (9) est un ressort à branches.
10. Dispositif de verrouillage selon la revendication 2 ou 3, caractérisé en ce que le poussoir (8; 8') et la palette (13; 13') sont en une seule pièce en matière plastique.
11. Dispositif de verrouillage selon l'une des revendications précédentes, caractérisé en ce que le prolongement (14; 14') présente un appendice (19; 19') formé sur ce prolongement et présentant un pont de contact (20; 20') et en ce que des éléments de raccordement (21; 21') conjugués au pont de contact (20; 20') sont prévur dans la boîte (1) du dispositif.
EP19790102685 1978-08-02 1979-07-27 Dispositif de verrouillage des portes d'appareils ménagers Expired EP0007637B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2833860 1978-08-02
DE19782833860 DE2833860A1 (de) 1978-08-02 1978-08-02 Bistabile verriegelungsvorrichtung fuer waschmaschinentueren

Publications (2)

Publication Number Publication Date
EP0007637A1 EP0007637A1 (fr) 1980-02-06
EP0007637B1 true EP0007637B1 (fr) 1981-09-23

Family

ID=6046021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19790102685 Expired EP0007637B1 (fr) 1978-08-02 1979-07-27 Dispositif de verrouillage des portes d'appareils ménagers

Country Status (4)

Country Link
US (1) US4314217A (fr)
EP (1) EP0007637B1 (fr)
JP (1) JPS5916629B2 (fr)
DE (2) DE2833860A1 (fr)

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Publication number Priority date Publication date Assignee Title
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
JPS6126517U (ja) * 1984-07-23 1986-02-17 株式会社 富士薬品 配置薬箱
SE461989B (sv) * 1988-09-16 1990-04-23 Electrolux Ab Laasanordning foer en lucka till en tvaettmaskin, centrifug e d
DE59006871D1 (de) * 1989-04-13 1994-09-29 Ellenberger & Poensgen Sicherheits-Türschloss für Türen von Elektrogeräten.
DE4034853C2 (de) * 1990-11-02 1998-08-06 Ltd Locking Technologies And D Magnetverschluß
DE29612424U1 (de) * 1996-07-17 1996-09-12 Fließ, Fernando, Dipl.-Ing., 15366 Neuenhagen Elektrisch betriebener Sicherheitsverschluß mit zusätzlichem Betätigungsantrieb für Türen und Fenster
US5879036A (en) * 1996-09-19 1999-03-09 Moline; Steven S. Door interlock for an appliance such as a washer
US7900979B2 (en) * 2003-06-27 2011-03-08 Illinois Tool Works, Inc. Low power consumption lock for appliance latch
EP1740752B1 (fr) * 2004-04-27 2013-03-27 Marquardt GmbH Verrou pour appareil menager
DE102004060607B3 (de) * 2004-12-16 2006-03-23 Emz-Hanauer Gmbh & Co. Kgaa Türverriegelung für eine Tür eines Haushaltsgeräts
ITTO20050333A1 (it) * 2005-05-17 2006-11-18 Itw Ind Components Srl Dispositivo bloccaporta per un elettrodomestico, in particolare un forno pirolitico
US7858307B2 (en) * 2005-08-09 2010-12-28 Maxwell Sensors, Inc. Light transmitted assay beads
DE102006047715A1 (de) * 2006-10-09 2008-04-10 Dometic Gmbh Schließvorrichtung zum Verriegeln des Innenraums eines Gerätes und Gerät mit Schließvorrichtung
ITTO20070476A1 (it) * 2007-06-29 2008-12-30 Itw Metalflex Druzba Za Proizv Dispositivo elettromagnetico di bloccaggio per una porta di un elettrodomestico, in particolare un oblo' di una lavatrice
DE102013019938A1 (de) * 2013-10-14 2015-04-16 Kiekert Ag Verriegelungseinheit für ein Kraftfahrzeug
EP3093416B1 (fr) * 2015-05-13 2019-07-03 dormakaba Deutschland GmbH Serrure

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DE2258812A1 (de) * 1972-12-01 1974-06-12 Ellenberger & Poensgen Verriegelungsvorrichtung fuer waschmaschinentueren
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Also Published As

Publication number Publication date
DE2833860A1 (de) 1980-02-21
EP0007637A1 (fr) 1980-02-06
DE2960894D1 (en) 1981-12-10
JPS5552476A (en) 1980-04-16
US4314217A (en) 1982-02-02
JPS5916629B2 (ja) 1984-04-17

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