EP1460163B1 - Door lock for electrical appliance, especially for a washing machine - Google Patents

Door lock for electrical appliance, especially for a washing machine Download PDF

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Publication number
EP1460163B1
EP1460163B1 EP04003730A EP04003730A EP1460163B1 EP 1460163 B1 EP1460163 B1 EP 1460163B1 EP 04003730 A EP04003730 A EP 04003730A EP 04003730 A EP04003730 A EP 04003730A EP 1460163 B1 EP1460163 B1 EP 1460163B1
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EP
European Patent Office
Prior art keywords
pawl
rotatable element
door lock
locking
door
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 - Lifetime
Application number
EP04003730A
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German (de)
French (fr)
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EP1460163A3 (en
EP1460163A2 (en
Inventor
Dirk Dahlke
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Miele und Cie KG
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Miele und Cie KG
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Publication date
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Publication of EP1460163A2 publication Critical patent/EP1460163A2/en
Publication of EP1460163A3 publication Critical patent/EP1460163A3/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C3/00—Fastening devices with bolts moving pivotally or rotatively
    • E05C3/12—Fastening devices with bolts moving pivotally or rotatively with latching action
    • E05C3/16—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
    • E05C3/22—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled
    • E05C3/24—Fastening devices with bolts moving pivotally or rotatively with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch the bolt being spring controlled in the form of a bifurcated member
    • 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
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C5/00—Fastening devices with bolts moving otherwise than only rectilinearly and only pivotally or rotatively

Definitions

  • the invention relates to a door lock for electrical appliances, in particular for washing machines, with a clamp attached to the door, with a spring-loaded rotary member which holds in a first rotational position the block in the closed position of the door and in a second rotational position the block to open the door releases, with a pivoting pawl, with the rotary member in the first rotational position can be locked, wherein the rotary member is rotatably mounted on a pivotable lever which is pivotable together with the rotary member against a spring force such that the pawl moves relative to the rotary member and this releases for rotation in the second rotational position and with a locking device with means with which the pivotal movement of the pawl can be prevented.
  • the aforementioned opening functions are, as already mentioned, designed for a household tumble dryer. Especially with washing machines with a large drum volume, there may be a desire to offer these or similar door opening options as well. However, it should also be noted that during the course of a wash program, operating conditions can occur in which opening the door is dangerous and must therefore be prevented. This is the case, for example, when the tub is filled with hot wash liquor or when the drum rotates at a high speed in the spin cycle.
  • a device for locking and releasing a door lock of an electrical device has a slide with a locking surface, which prevents the rotation of a gripping device and thus prevents the release of a valve disposed on the door block.
  • the slide is moved by an electrically controlled actuator (motor, solenoid, piezostrictive component) so that a state-dependent blocking of the door lock can be made via the device control.
  • the slide is moved via a relatively complex lever mechanism, moreover, in the illustrated door lock neither an opening by overstroke nor an opening by pressure from the inside is possible.
  • a device for locking the door of a washing machine or dishwasher is known.
  • a door hook or a locking pin engages in a locking body and is held by this in the closed position.
  • the locking body can be locked in the closed position by a locking bolt, the latter being moved by a bistable lever mounted in its locking position.
  • a lot of mechanically interlocking individual components are used, which are very expensive both due to the cost of parts and because of their complicated assembly.
  • this lock does not have the opening options by overstroke or pressure from the inside.
  • the invention thus raises the problem, a door lock for electrical equipment of the type mentioned in such a way that their opening functions can be locked in a simple and inexpensive way by the device control.
  • the achievable with the present invention consist in the simple construction of the locking device, in which only a single movable part is used, and in the fact that numerous opening options for the door can be realized and that these on the locking mechanism according to the invention by a simple linear movement are lockable.
  • the locking device is designed such that when it moves into an open position, the pawl pivots so that it moves relative to the rotary member and this releases for rotation in the second rotational position.
  • the functionality of the locking device is extended by an opening function and a separate solenoid for moving the pawl can be saved.
  • the pawl and its bearing and / or the rotary member are designed such that they in the position they occupy, when the rotary member is in the second rotational position, the movement of the locking device from the neutral position into one lock another position.
  • This can be sensed either via the motor current of the drive for the locking device or by a position sensor (claim 7) in a simple manner and without additional switch, whether the door has been closed.
  • a locking projection is formed on the rotary member, which blocks the movement of the locking device from the neutral position to another position when the rotary member is in the second rotational position.
  • the locking device is designed as a movable in the longitudinal direction of the latch housing, on the inner walls of which at least one locking lug is formed.
  • the door lock has a releasably mounted in the direction of the pawl release pin with which the pawl can be converted into a position in which it releases a rotation of the rotary member in the second rotational position. This can be done on simple Way an additional opening possibility can be realized, for example by a lever mechanism on the door.
  • the in the FIGS. 1 to 3 shown door lock is in one Housing arranged, of which in the drawings, only the lower part (1) is shown.
  • the housing in turn is attached to a washing machine front, also not shown.
  • a locking pin (2) is connected to the door (not shown) and engages with the door closed through an opening (3) in the housing lower part (1) in the region of the lock.
  • the door lock has a rotary member (4) which is rotatably mounted on a lever (5). With the rotary member (4) acts a pawl (6) together, which is also rotatably mounted on the lever (5).
  • the bearing (7) of the pawl (6) is such that the latter can pivot in two directions, namely on the one hand in FIG.
  • the pawl (6) is formed as a flat one-piece sheet metal part and has approximately the shape of a drop. Its tip is directed to the rotary member (4) and bent downwards as a nose (8).
  • the pawl (6) by a lever (5) attached tension spring (9) on the one hand to the rotary member (4) and on the other hand in FIG. 2 pulled down.
  • the door lock has an adjusting screw (10) which is received by a on the housing lower part (1) integrally formed dome (11).
  • the dome (11) is surrounded by a spring (12) which is supported on one side on the lever (5) and on the other side on the housing lower part (1).
  • the rotary member (4) is biased by a torsion spring (not shown) counterclockwise. It rotates as a whole about an axis (15), which is stationary with respect to the lever (5). On the outer circumference of the rotary member (4) slide tracks (16, 18) are arranged. To a slide track (16) an outwardly directed locking projection (17) is formed, which points upward when the rotary member (4) is in the second rotational position (s. FIG. 8 ).
  • the door lock on a release pin (20) which is mounted in a housing on the lower part (1) molded sleeve (21) movable in the axial direction.
  • the pin (20) cooperates with a not shown in the drawing, arranged on the door lever handle and can be pressed by its operation in the direction of the pawl (6).
  • the clamp (2) interacts with the rotary member (4) in such a way that it engages in a recess (22) when closing the door and the rotary member (4) is further moved to a first rotational position in which a nose (23) under the clamp (2) moves so that he can not move in its longitudinal direction and the door remains closed.
  • a locking edge (19) under the action of the counterclockwise directed torsion spring on the locking edge (19) and holds the rotary member (4) in the first rotational position.
  • the lower housing part (1) has a base plate (24) directed towards the front of the washing machine, from which a peripheral frame (25) extends vertically and offset inwards.
  • a peripheral frame (25) extends vertically and offset inwards.
  • guide lugs (26) are integrally formed with the edge (27) of the base plate (24) and the lugs (26) produce a parallel guide (28).
  • a lock housing (29) which is formed of a U-shaped body made of plastic.
  • the lower edges (31) of the two legs (30) are bent inwards.
  • At the rear edges (32) of the legs (30) inwardly bent projections are formed, which act as first locking lugs (33).
  • a DC motor not shown in the drawings may be used.
  • two parallel contact tracks (not shown) are arranged on a circuit board (40) connected to the base plate (24), of which one is continuous and is energized by the washing machine control via the upper port (40a).
  • the other contact track has interruptions and is thus divided into individual contact sections, which are connected to different ports (40b, c) on the printed circuit board.
  • the release pin (20) in the sleeve (21) in the direction of the pawl (6) moves and pushes them away from the rotary member (4).
  • the nose (8) of the pawl (6) via the locking edge (19) is raised and thus the rotary member (4) released.
  • the torsion spring then moves the rotary member (4) in the second rotational position in which the block (2) is released.
  • the above-described opening functions can be deactivated by the washing machine control by power supply to the piezomotor (39) and an associated movement of the lock housing (29).
  • FIGS. 1 to 3 show the lock housing (29) in a so-called neutral position (I), in which it in the Figures 1 and 2 is in the leftmost position.
  • This position (I) occupies the lock housing (29) after the end of the program.
  • the piezomotor (39) has moved the lock housing (29) to the right into a first locking position (II).
  • This movement is only possible when the rotary member (4) is in the first rotational position, ie, the door must be closed and the clamp (2) are fixed by the rotary member (4). Otherwise, the locking projection (17) upwards and the third locking lug (43) moves against it. As a result, further movement of the lock housing (29) is prevented.
  • the absence of motion can be detected by the washing machine controller in that, in spite of the piezo motor (39), the contact sections (40) are not energized (using a DC motor would require additional current sensing with shutdown to avoid overloading the motor). This can prevent operation of the washing machine with the door open.
  • FIGS. 6 and 7 show the lock housing (29) in a second locking position (III).
  • the first locking lugs (33) continue to lock the pivotal movement of the lever (5) and thus the emergency release.
  • the second locking lug (38) is located next to the pawl (6) and prevents their lateral pivoting movement on the other slide track (16), which has no locking edge (19).
  • the opening option is blocked by overstroke.
  • the web (37) of the lock housing (29) over the pawl (6) and blocks a pivoting movement, which would lift the nose (8) perpendicularly from the locking edge (19) (caused by the release pin 20).
  • an opening is blocked by the lever handle.
  • the washing machine control moves the locking housing (29) in this second locking position (III), if the user is to be prohibited any opening of the door, which is required, for example, in highly heated wash liquor or rapid rotation of the drum.
  • FIGS. 8 and 9 show an additional possibility of opening the door lock.
  • the piezomotor (39) has driven the lock housing (29) beyond its second locking position (III) into an open position (IV).
  • the second locking lug (38) in the widened portion (42) of the pawl (6) moves until it touches its edge and upon further movement in FIG. 9 the pawl (6) pivots upwards.
  • the nose (8) is pressed laterally out of its position behind the locking edge (19) and releases the rotary member (4).
  • the torsion spring then moves the rotary member (4) in the second rotational position in which the block (2) is no longer locked.
  • the above-described mode of operation allows the door to be opened via an electrical switch when the power supply is switched on.

Abstract

The locking device is constructed as a locking casing (29), moving longitudinally in the direction of the catch (6). Onto its inner walls locking projections (33, 38, 43) are formed. These prevent lever (5) and catch pivoting. The locking device can be moved from a neutral position (I) in which it releases the lever and catch, into a first locking position (II) in which lever pivoting is prevented, and into a second locking position (III) in which pivoting of lever and catch are prevented.

Description

Die Erfindung betrifft eine Türverriegelung für elektrische Geräte, insbesondere für Waschmaschinen, mit einem an der Tür befestigten Kloben, mit einem federgespannten Drehglied, das in einer ersten Drehstellung den Kloben in der Schließstellung der Tür hält und in einer zweiten Drehstellung den Kloben zum Öffnen der Tür freigibt, mit einer schwenkbaren Klinke, mit der das Drehglied in der ersten Drehstellung arretierbar ist, wobei das Drehglied drehbar auf einem schwenkbaren Hebel gelagert ist, der zusammen mit dem Drehglied gegen eine Federkraft derart verschwenkbar ist, dass die Klinke sich relativ zum Drehglied bewegt und dieses für eine Drehung in die zweite Drehstellung freigibt und mit einer Sperrvorrichtung mit Mitteln mit welchen die Schwenkbewegung der Klinke verhinderbar ist.The invention relates to a door lock for electrical appliances, in particular for washing machines, with a clamp attached to the door, with a spring-loaded rotary member which holds in a first rotational position the block in the closed position of the door and in a second rotational position the block to open the door releases, with a pivoting pawl, with the rotary member in the first rotational position can be locked, wherein the rotary member is rotatably mounted on a pivotable lever which is pivotable together with the rotary member against a spring force such that the pawl moves relative to the rotary member and this releases for rotation in the second rotational position and with a locking device with means with which the pivotal movement of the pawl can be prevented.

Aus der DE 39 19 458 C2 ist eine Türverriegelung bekannt, die insbesondere für Wäschetrockner geeignet ist. Dabei sind auf dem Drehglied mehrere Kulissenbahnen angeordnet, die durch ihre Form und den Umstand, dass die Klinke sowohl in axialer als auch in radialer Richtung schwenkbeweglich gelagert ist und in beiden Bewegungsrichtungen unter Federspannung steht, eine Öffnung der Tür auf drei verschiedene Arten zulassen.

  1. 1. Elektromagnetische Türöffnung:
    • Ein Elektromagnet, der beispielsweise über eine Türöffnungstaste bestromt werden kann, bewegt die Klinke in eine Außereingriffsstellung, so dass diese eine Bewegung des Drehglieds in die zweite Drehstellung und damit eine Freigabe des Klobens ermöglicht.
  2. 2. Öffnung durch Überhub:
    • Durch nochmaliges Drücken der bereits geschlossenen Tür in Schließrichtung dreht der Kloben das Drehglied in eine Drehstellung, in der eine seitliche Bewegung der unter Federspannung stehenden Klinke ermöglicht wird. Hierdurch wird die Verrastung des Drehglieds mit der Klinke aufgehoben und es bewegt sich ebenfalls in die zweite Drehstellung.
  3. 3. Öffnen durch Druck von innen:
    • Das Drehglied ist auf einem schwenkbaren Hebel gelagert. Dieser kann zusammen mit dem Drehglied gegen eine Federkraft derart verschwenkt werden, dass das Drehglied sich relativ zur Klinke bewegt und so für eine Drehung in die zweite Drehstellung freigegeben wird. Die Kraft wird durch Druck auf die Innenseite der Tür auf den Kloben und von dort über das Drehglied auf den Hebel aufgebracht. Diese Öffnungsfunktion dient als Notentriegelung. Sie soll es ermöglichen, sich ohne Hilfe bei geschlossener Tür aus dem Inneren der Trommel zu befreien.
From the DE 39 19 458 C2 is a door lock is known, which is particularly suitable for tumble dryer. In this case, a plurality of slide tracks are arranged on the rotary member, which allow by its shape and the fact that the pawl is pivotally mounted both in the axial and in the radial direction and is in both directions under spring tension, opening the door in three different ways.
  1. 1. Electromagnetic door opening:
    • An electromagnet, which can be energized for example via a door opening button, moves the pawl into a disengaged position, so that this allows a movement of the rotary member in the second rotational position and thus a release of the block.
  2. 2. Opening by overstroke:
    • By pressing the already closed door again in the closing direction, the clamp rotates the rotary member into a rotational position in which a lateral movement of the spring-loaded pawl is made possible. As a result, the locking of the rotary member is released with the pawl and it also moves in the second rotational position.
  3. 3. Open by pressure from the inside:
    • The rotary member is mounted on a pivotable lever. This can be pivoted together with the rotary member against a spring force such that the rotary member is moved relative to the pawl and is released for rotation in the second rotational position. The force is applied by pressure on the inside of the door on the block and from there via the rotary member on the lever. This opening function is used as an emergency release. It should make it possible to liberate without help with the door closed from the inside of the drum.

Die vorgenannten Öffnungsfunktionen sind, wie bereits eingangs erwähnt, für einen Haushalts-Wäschetrockner konzipiert. Insbesondere bei Waschmaschinen mit großem Trommelvolumen kann der Wunsch bestehen, diese oder ähnliche Möglichkeiten der Türöffnung ebenfalls anzubieten. Dabei ist jedoch zusätzlich zu beachten, dass es im Verlauf eines Waschprogramms zu Betriebszuständen kommen kann, in denen eine Öffnung der Tür gefährlich ist und deshalb verhindert werden muss. Dies ist beispielsweise der Fall, wenn der Laugenbehälter mit heißer Waschflotte gefüllt ist oder wenn die Trommel im Schleudergang mit einer hohen Drehzahl rotiert.The aforementioned opening functions are, as already mentioned, designed for a household tumble dryer. Especially with washing machines with a large drum volume, there may be a desire to offer these or similar door opening options as well. However, it should also be noted that during the course of a wash program, operating conditions can occur in which opening the door is dangerous and must therefore be prevented. This is the case, for example, when the tub is filled with hot wash liquor or when the drum rotates at a high speed in the spin cycle.

Aus der DE 196 01 230 A1 ist deshalb eine Türverriegelung bekannt, bei der die Klinke mit einer Öffnung versehen ist, in die der Verriegelungsstift eines Spermechanismus' eintauchen kann. Hierdurch ist zwar die Öffnung durch Überhub und die Öffnung durch einen Elektromagneten sperrbar, aber nicht die Notentriegelung. Der Verriegelungsstift ist nämlich nicht in der Lage, den Schwenkweg des gegen die Federkraft eines Hebels, wie er aus der DE 39 19 458 C2 bekannt ist und auch in der DE 196 01 230 A1 als mögliche Alternative vorgeschlagen wird, zu hemmen. Deshalb lässt sich die Notentriegelung auch während der Durchführung eines Waschprogramms vornehmen, was nicht gewünscht ist.From the DE 196 01 230 A1 Therefore, a door lock is known in which the pawl is provided with an opening into which the locking pin of a Spermechanismus' can dip. As a result, although the opening can be blocked by overstroke and the opening by an electromagnet, but not the emergency release. The locking pin is in fact not able to pivot against the spring force of a lever, as he from the DE 39 19 458 C2 is known and well in the DE 196 01 230 A1 as a possible alternative is proposed to inhibit. Therefore, the emergency release can also make while performing a wash program, which is not desirable.

Aus der EP 1 217 117 A1 ist eine Vorrichtung zum Sperren und Freigeben eines Türschlosses eines elektrischen Gerätes bekannt. Diese Vorrichtung besitzt einen Schieber mit einer Sperrfläche, die die Drehung einer Greifeinrichtung verhindert und damit die Freigabe eines an der Tür angeordneten Klobens unterbindet. Der Schieber wird durch einen elektrisch gesteuerten Aktuator (Motor, Elektromagnet, piezostriktives Bauteil) bewegt, so dass über die Gerätesteuerung eine zustandsabhängige Sperrung des Türschlosses vorgenommen werden kann. Der Schieber wird über einen relativ aufwändigen Hebelmechanismus bewegt, außerdem ist bei dem dargestellten Türschloss weder eine Öffnung durch Überhub noch ein Öffnen durch Druck von innen möglich.From the EP 1 217 117 A1 a device for locking and releasing a door lock of an electrical device is known. This device has a slide with a locking surface, which prevents the rotation of a gripping device and thus prevents the release of a valve disposed on the door block. The slide is moved by an electrically controlled actuator (motor, solenoid, piezostrictive component) so that a state-dependent blocking of the door lock can be made via the device control. The slide is moved via a relatively complex lever mechanism, moreover, in the illustrated door lock neither an opening by overstroke nor an opening by pressure from the inside is possible.

Aus der DE 196 01 228 ist eine Vorrichtung zum Verriegeln der Tür einer Wasch- oder Geschirrspülmaschine bekannt. Bei dieser Vorrichtung greift ein Türhaken oder ein Schließkloben in einen Verriegelungskörper ein und wird durch diesen in der Schließstellung gehalten. Der Verriegelungskörper ist in der Schließstellung durch einen Sperrriegel arretierbar, wobei letzterer durch einen bistabil gelagerten Hebel in seine Arretierstellung bewegt wird. Auch bei dieser Vorrichtung werden sehr viele mechanisch ineinandergreifende Einzelbauteile verwendet, welche sowohl aufgrund der Teilekosten als auch wegen ihrer komplizierten Montage sehr teuer sind. Außerdem besitzt auch diese Verriegelung nicht die Öffnungsmöglichkeiten durch Überhub oder Druck von innen.From the DE 196 01 228 a device for locking the door of a washing machine or dishwasher is known. In this device, a door hook or a locking pin engages in a locking body and is held by this in the closed position. The locking body can be locked in the closed position by a locking bolt, the latter being moved by a bistable lever mounted in its locking position. Also in this device a lot of mechanically interlocking individual components are used, which are very expensive both due to the cost of parts and because of their complicated assembly. In addition, this lock does not have the opening options by overstroke or pressure from the inside.

Der Erfindung stellt sich somit das Problem, eine Türverriegelung für elektrische Geräte der eingangs genannten Art dahingehend weiterzubilden, dass ihre Öffnungsfunktionen auf einfache und kostengünstige Art durch die Gerätesteuerung gesperrt werden können.The invention thus raises the problem, a door lock for electrical equipment of the type mentioned in such a way that their opening functions can be locked in a simple and inexpensive way by the device control.

Erfindungsgemäß wird dieses Problem durch eine Türverriegelung mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention this problem is solved by a door lock with the features of claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

Die mit der Erfindung erreichbaren Vorteile bestehen in dem einfachen Aufbau der Sperrvorrichtung, bei der nur ein einziges bewegliches Teil verwendet wird, und in der Tatsache, dass zahlreiche Öffnungsmöglichkeiten für die Gerätetür realisiert werden können und dass diese über den erfindungsgemäßen Sperrmechanismus durch eine einfache lineare Bewegung sperrbar sind.The achievable with the present invention consist in the simple construction of the locking device, in which only a single movable part is used, and in the fact that numerous opening options for the door can be realized and that these on the locking mechanism according to the invention by a simple linear movement are lockable.

In einer vorteilhaften Ausführungsform ist die Sperrvorrichtung derart ausgebildet, dass sie bei ihrer Bewegung in eine Öffnungsstellung die Klinke derart schwenkt, dass sie sich relativ zum Drehglied bewegt und dieses für eine Drehung in die zweite Drehstellung freigibt. Hierdurch wird die Funktionalität der Sperrvorrichtung um eine Öffnungsfunktion erweitert und ein separater Elektromagnet zur Bewegung der Klinke kann eingespart werden.In an advantageous embodiment, the locking device is designed such that when it moves into an open position, the pawl pivots so that it moves relative to the rotary member and this releases for rotation in the second rotational position. As a result, the functionality of the locking device is extended by an opening function and a separate solenoid for moving the pawl can be saved.

Es ist auch vorteilhaft, wenn die Klinke und ihre Lagerung und/oder das Drehglied derart ausgebildet sind, dass sie in der Position, die sie einnehmen, wenn sich das Drehglied in der zweiten Drehstellung befindet, die Bewegung der Sperrvorrichtung von der neutralen Stellung in eine andere Stellung sperren. Hierdurch kann entweder über den Motorstrom des Antriebs für die Sperrvorrichtung oder durch einen Positionssensor (Anspruch 7) auf einfache Weise und ohne zusätzlichen Schalter sensiert werden, ob die Tür geschlossen wurde. In einer zweckmäßigen Ausführungsform ist an das Drehglied ein Arretiervorsprung angeformt, der die Bewegung der Sperrvorrichtung von der neutralen Stellung in eine andere Stellung sperrt, wenn sich das Drehglied in der zweiten Drehstellung befindet.It is also advantageous if the pawl and its bearing and / or the rotary member are designed such that they in the position they occupy, when the rotary member is in the second rotational position, the movement of the locking device from the neutral position into one lock another position. This can be sensed either via the motor current of the drive for the locking device or by a position sensor (claim 7) in a simple manner and without additional switch, whether the door has been closed. In an advantageous embodiment, a locking projection is formed on the rotary member, which blocks the movement of the locking device from the neutral position to another position when the rotary member is in the second rotational position.

In einer weiteren zweckmäßigen Ausführungsform ist die Sperrvorrichtung als in Längsrichtung der Klinke bewegbares Sperrgehäuse ausgebildet, an dessen Innenwände mindestens eine Sperrnase angeformt ist.In a further expedient embodiment, the locking device is designed as a movable in the longitudinal direction of the latch housing, on the inner walls of which at least one locking lug is formed.

Es ist auch vorteilhaft, wenn ein Piezomotor zur Bewegung der Sperrvorrichtung verwendet wird. Ein solcher Motor ist preisgünstig und kompakt im Aufbau.It is also advantageous if a piezomotor is used to move the locking device. Such a motor is inexpensive and compact in construction.

In einer bevorzugten Ausführungsform besitzt die Türverriegelung einen in Richtung der Klinke beweglich gelagerten Auslösestift, mit dem die Klinke in eine Stellung überführbar ist, in der sie eine Drehung des Drehglieds in die zweite Drehstellung freigibt. Hierdurch kann auf einfache Weise eine zusätzliche Öffnungsmöglichkeit realisiert werden, beispielsweise durch einen Hebelmechanismus an der Tür.In a preferred embodiment, the door lock has a releasably mounted in the direction of the pawl release pin with which the pawl can be converted into a position in which it releases a rotation of the rotary member in the second rotational position. This can be done on simple Way an additional opening possibility can be realized, for example by a lever mechanism on the door.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigen

Figur 1
die Seitenansicht einer Türverriegelung mit einem teilweise geschnittenem Sperrgehäuse (29) in der neutralen Stellung (I);
Figur 2
die Draufsicht auf die Türverriegelung nach Figur 1;
Figur 3
die Rückansicht der Türverriegelung nach Figur 1;
Figur 4
einen Ausschnitt aus der Seitenansicht der Türverriegelung in der ersten Verriegelungsstellung (II);
Figur 5
einen Ausschnitt aus der Draufsicht auf die Türverriegelung in der ersten Verriegelungsstellung (II);
Figur 6
einen Ausschnitt aus der Seitenansicht der Türverriegelung in der zweiten Verriegelungsstellung (III);
Figur 7
einen Ausschnitt aus der Draufsicht auf die Türverriegelung in der zweiten Verriegelungsstellung (III);
Figur 8
einen Ausschnitt aus der Seitenansicht der Türverriegelung in der Öffnungsstellung (IV);
Figur 9
einen Ausschnitt aus der Draufsicht auf die Türverriegelung in der Öffnungsstellung (IV);
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. Show it
FIG. 1
the side view of a door lock with a partially cut lock housing (29) in the neutral position (I);
FIG. 2
the top view of the door lock after FIG. 1 ;
FIG. 3
the rear view of the door lock after FIG. 1 ;
FIG. 4
a detail of the side view of the door lock in the first locking position (II);
FIG. 5
a detail of the top view of the door lock in the first locking position (II);
FIG. 6
a detail of the side view of the door lock in the second locking position (III);
FIG. 7
a detail of the top view of the door lock in the second locking position (III);
FIG. 8
a detail of the side view of the door lock in the open position (IV);
FIG. 9
a detail of the top view of the door lock in the open position (IV);

Die Türverriegelung gemäß dem in den Figuren gezeigten Ausführungsbeispiel leistet bei einfachem Aufbau folgende Funktionen:

  • Notentriegelung
    Die Tür kann allein durch Drücken von innen geöffnet werden.
  • Türhebel-Öffnung
    Die Tür kann durch die Betätigung eines Hebelgriffs auch im stromlosen Zustand geöffnet werden.
  • Öffnung durch Überhub
    die Tür kann durch einen sogenannten Überhub, d. h. durch nochmaliges Drücken der Tür von außen (im Anschluss an ein vorausgegangenes Schließen) geöffnet werden.
  • Taster-Öffnung
    Die Tür kann über die Betätigung eines Tasters durch elektromotorische Entriegelung geöffnet werden.
The door lock according to the embodiment shown in FIGS makes the following functions with a simple structure:
  • Emergency release
    The door can be opened solely by pressing inside.
  • Door lever open
    The door can be opened by the operation of a lever handle even when de-energized.
  • Opening by overstroke
    the door can be opened by a so-called overtravel, ie by pressing the door again from the outside (following a previous closing).
  • Button opening
    The door can be opened by pressing a button by electromotive unlocking.

Zunächst werden nachfolgend die einzelnen Bauteile der Türverriegelung erläutert, im Anschluss daran ihre Funktion. Die in den Figuren 1 bis 3 dargestellte Türverriegelung ist in einem Gehäuse angeordnet, von dem in den Zeichnungen lediglich das Unterteil (1) dargestellt ist. Das Gehäuse wiederum ist an einer ebenfalls nicht dargestellten Waschmaschinenfrontseite befestigt. Ein Schließkloben (2) ist mit der Tür (nicht dargestellt) verbunden und greift bei geschlossener Tür durch eine Öffnung (3) im Gehäuseunterteil (1) in den Bereich der Verriegelung ein. Die Türverriegelung weist ein Drehglied (4) auf, welches auf einem Hebel (5) drehbar gelagert ist. Mit dem Drehglied (4) wirkt eine Klinke (6) zusammen, die ebenfalls drehbar auf dem Hebel (5) gelagert ist. Die Lagerstelle (7) der Klinke (6) ist so beschaffen, dass letztere in zwei Richtungen schwenken kann, nämlich zum einen in Figur 1 nach oben und unten und zum anderen in Figur 2 nach oben und unten. Die beiden Schwenkrichtungen stehen somit senkrecht zueinander. Die Klinke (6) ist als flaches einstückiges Blechteil ausgebildet und besitzt annähernd die Form eines Tropfens. Ihre Spitze ist zum Drehglied (4) gerichtet und als Nase (8) nach unten gebogen. Die Klinke (6) wird durch eine am Hebel (5) befestigte Zugfeder (9) einerseits auf das Drehglied (4) und andererseits in Figur 2 nach unten gezogen. Weiterhin besitzt die Türverriegelung eine Justierschraube (10), die von einem an dem Gehäuseunterteil (1) angeformten Dom (11) aufgenommen wird. Der Dom (11) wird von einer Feder (12) umgeben, die sich auf der einen Seite am Hebel (5) und auf der anderen Seite am Gehäuseunterteil (1) abstützt. Durch Drehung der Justierschraube (10), deren Kopf (13) auf den Hebel (5) wirkt, wird die Feder (12) mehr oder weniger gespannt.First, the individual components of the door lock are explained below, hereafter her function. The in the FIGS. 1 to 3 shown door lock is in one Housing arranged, of which in the drawings, only the lower part (1) is shown. The housing in turn is attached to a washing machine front, also not shown. A locking pin (2) is connected to the door (not shown) and engages with the door closed through an opening (3) in the housing lower part (1) in the region of the lock. The door lock has a rotary member (4) which is rotatably mounted on a lever (5). With the rotary member (4) acts a pawl (6) together, which is also rotatably mounted on the lever (5). The bearing (7) of the pawl (6) is such that the latter can pivot in two directions, namely on the one hand in FIG. 1 up and down and the other in FIG. 2 up and down. The two pivot directions are thus perpendicular to each other. The pawl (6) is formed as a flat one-piece sheet metal part and has approximately the shape of a drop. Its tip is directed to the rotary member (4) and bent downwards as a nose (8). The pawl (6) by a lever (5) attached tension spring (9) on the one hand to the rotary member (4) and on the other hand in FIG. 2 pulled down. Furthermore, the door lock has an adjusting screw (10) which is received by a on the housing lower part (1) integrally formed dome (11). The dome (11) is surrounded by a spring (12) which is supported on one side on the lever (5) and on the other side on the housing lower part (1). By rotation of the adjusting screw (10) whose head (13) acts on the lever (5), the spring (12) is more or less tensioned.

Das Drehglied (4) ist durch eine Drehfeder (nicht dargestellt) gegen den Uhrzeigersinn vorgespannt. Es dreht sich insgesamt um eine Achse (15), die in Bezug auf den Hebel (5) ortsfest ist. Am äußeren Umfang des Drehglieds (4) sind Kulissenbahnen (16, 18) angeordnet. An eine Kulissenbahn (16) ist ein nach außen gerichteter Arretiervorsprung (17) angeformt, der nach oben zeigt, wenn sich das Drehglied (4) in der zweiten Drehstellung befindet (s. Figur 8).The rotary member (4) is biased by a torsion spring (not shown) counterclockwise. It rotates as a whole about an axis (15), which is stationary with respect to the lever (5). On the outer circumference of the rotary member (4) slide tracks (16, 18) are arranged. To a slide track (16) an outwardly directed locking projection (17) is formed, which points upward when the rotary member (4) is in the second rotational position (s. FIG. 8 ).

Weiterhin weist die Türverriegelung einen Auslösestift (20) auf, der in einer am Gehäuseunterteil (1) angeformten Hülse (21) in axialer Richtung beweglich gelagert ist. Der Stift (20) wirkt mit einem in der Zeichnung nicht dargestellten, an der Tür angeordneten Hebelgriff zusammen und kann durch dessen Betätigung in Richtung der Klinke (6) gedrückt werden.Furthermore, the door lock on a release pin (20) which is mounted in a housing on the lower part (1) molded sleeve (21) movable in the axial direction. The pin (20) cooperates with a not shown in the drawing, arranged on the door lever handle and can be pressed by its operation in the direction of the pawl (6).

Der Kloben (2) wirkt mit dem Drehglied (4) in der Weise zusammen, dass er beim Schließen der Tür in eine Ausnehmung (22) eingreift und das Drehglied (4) weiter in eine erste Drehstellung bewegt, in der eine Nase (23) unter den Kloben (2) fährt, so dass er sich nicht in seine Längsrichtung bewegen kann und die Tür verschlossen bleibt. Außerdem wirkt auf das Drehglied (4) die Klinke (6), und zwar über die nach unten gebogene Nase (8), welche sich durch die Spannung der Zugfeder (9) je nach dem Zustand der Türverriegelung auf verschiedenen Kulissenbahnen (16, 18) am Umfang des Drehglieds (4) bewegt. Da die Wirkungsweise der Kulissenbahnen (16, 18) auf die Nase (8) in Abhängigkeit von den verschiedenen Öffnungsbetätigungen bereits aus der DE 39 19 458 C2 bekannt ist, wird darauf nicht näher eingegangen. In dem in den Figuren 1 bis 7 gezeigten Zustand liegt eine Verriegelungskante (19) unter der Wirkung der gegen den Uhrzeigersinn gerichteten Drehfeder an der Verriegelungskante (19) an und hält das Drehglied (4) in der ersten Drehstellung.The clamp (2) interacts with the rotary member (4) in such a way that it engages in a recess (22) when closing the door and the rotary member (4) is further moved to a first rotational position in which a nose (23) under the clamp (2) moves so that he can not move in its longitudinal direction and the door remains closed. In addition, acts on the rotary member (4) the pawl (6), via the downwardly bent nose (8), which is due to the tension of the tension spring (9) depending on the state of the door lock on different cam tracks (16, 18) on the circumference of the rotary member (4) moves. Since the operation of the slide tracks (16, 18) on the nose (8) in response to the various opening operations already from the DE 39 19 458 C2 is known, it will not be discussed in detail. In the in the FIGS. 1 to 7 a locking edge (19) under the action of the counterclockwise directed torsion spring on the locking edge (19) and holds the rotary member (4) in the first rotational position.

Das Gehäuseunterteil (1) besitzt eine zur Waschmaschinenfrontseite gerichtete Grundplatte (24), von der sich senkrecht und nach innen versetzt ein umlaufender Rahmen (25) erstreckt. An den Rahmen (25) sind mit Abstand zur Grundplatte (24) Führungsnasen (26) angeformt, die mit dem Rand (27) der Grundplatte (24) und den Nasen (26) eine Parallelführung (28) erzeugen. In der Führung (28) gleitet ein Sperrgehäuse (29), welches aus einem u-förmig Körper aus Kunststoff gebildet ist. Hierzu sind die unteren Ränder (31) der beiden Schenkel (30) einwärts gebogenen. An die hinteren Ränder (32) der Schenkel (30) sind nach innen gebogene Fortsätze angeformt, die als erste Sperrnasen (33) fungieren. Deren oberer Rand (34) erstreckt sich in einer Höhe, die geringfügig unter dem unterem Rand (36) der Längsseiten (35) des Hebels (5) liegt. An den vorderen Bereich des Stegs (37) des Sperrgehäuses (29) sind eine zweite Sperrnase (38) und eine dritte Sperrnase (43) angeformt, die sich vom Steg (37) aus nach unten erstrecken und durch Bewegung des Sperrgehäuses (29) in den Schwenkbereich der Klinke (6) gefahren werden können. Die Länge der Schenkel (30) ist derart bemessen, dass die dritte Sperrnase (43) gegen den Arretiervorsprung (17) stößt, wenn sich das Drehglied (4) in der zweiten Drehstellung befindet.The lower housing part (1) has a base plate (24) directed towards the front of the washing machine, from which a peripheral frame (25) extends vertically and offset inwards. On the frame (25) at a distance from the base plate (24) guide lugs (26) are integrally formed with the edge (27) of the base plate (24) and the lugs (26) produce a parallel guide (28). In the guide (28) slides a lock housing (29) which is formed of a U-shaped body made of plastic. For this purpose, the lower edges (31) of the two legs (30) are bent inwards. At the rear edges (32) of the legs (30) inwardly bent projections are formed, which act as first locking lugs (33). Its upper edge (34) extends at a height slightly below the lower edge (36) of the longitudinal sides (35) of the lever (5). At the front portion of the web (37) of the lock housing (29) a second locking lug (38) and a third locking lug (43) are formed extending from the web (37) downwardly and by movement of the lock housing (29) in the pivoting range of the pawl (6) can be driven. The length of the legs (30) is dimensioned such that the third locking lug (43) abuts against the locking projection (17) when the rotary member (4) is in the second rotational position.

Das Sperrgehäuse (29) wird durch einen Piezomotor (39) in die in Figur 2 mit I bis IV bezeichneten Stellungen bewegt. Alternativ kann ein in den Zeichnungen nicht dargestellter Gleichstrommotor verwendet werden. Zur Sensierung der Stellungen sind auf einer mit der Grundplatte (24) verbundenen Leiterkarte (40) zwei parallele Kontaktbahnen (nicht dargestellt) angeordnet, von denen die eine durchgehend ausgeführt ist und über den oberen Port (40a) von der Waschmaschinensteuerung an Spannung gelegt ist. Die andere Kontaktbahn besitzt Unterbrechungen und ist so in einzelne Kontaktabschnitte unterteilt, die mit verschiedenen Ports (40b, c) auf der Leitekarte verbunden sind. Durch eine Kontaktzunge (41) am Sperrgehäuse (29) werden in Abhängigkeit von seiner Position verschiedene Kontaktabschnitte mit der durchgehenden Kontaktbahn verbunden und so an Spannung gelegt, so dass die Waschmaschinensteuerung (nicht dargestellt) über die Spannungsbelegung der mit den Kontaktabschnitten (40) verbundenen Ports (40b, c) eine Positionserkennung durchführen kann.The lock housing (29) by a piezomotor (39) in the in FIG. 2 moved with I to IV designated positions. Alternatively, a DC motor not shown in the drawings may be used. To sense the positions, two parallel contact tracks (not shown) are arranged on a circuit board (40) connected to the base plate (24), of which one is continuous and is energized by the washing machine control via the upper port (40a). The other contact track has interruptions and is thus divided into individual contact sections, which are connected to different ports (40b, c) on the printed circuit board. By a contact tongue (41) on the lock housing (29), depending on its position, different contact sections are connected to the continuous contact track and so put on voltage, so that the washing machine control (not shown) on the voltage assignment of the ports connected to the contact sections (40) (40b, c) can perform a position detection.

Im folgenden sind die Funktionen der Türverriegelung beschrieben:The following describes the functions of the door lock:

Bei einer Notentriegelung wird die Tür in Figur 1 nach unten gedrückt. Dabei zieht der an ihr befestigte Kloben (2) über die Nase (23) das Drehglied (4) nach unten. Zunächst ist das Drehglied (4) noch in der Schließstellung mittels der Nase (8) der Klinke (6) verriegelt. Wird nun das gesamte System bestehend aus Drehglied (4), Hebel (5) und Klinke (6) gegen die Kraft der Feder (12) weiter nach unten gezogen, so überwindet nach einem Teil der synchronen Schwenkbewegung von Hebel (5) und Klinke (6) letztere einen Leerhub und stößt dann gegen den oberen Rand der Hülse (21). Dabei hebt die Nase (8) der Klinke (6) vom Drehglied (4) ab und gibt es frei. Die Drehfeder bewegt das Drehglied (4) in die zweite Drehstellung, in der der Kloben (2) freigegeben wird.In an emergency release, the door is in FIG. 1 pressed down. The attached to her claw (2) via the nose (23) pulls the rotary member (4) downwards. First, the rotary member (4) is still locked in the closed position by means of the nose (8) of the pawl (6). Now, if the entire system consisting of rotary member (4), lever (5) and pawl (6) against the force of the spring (12) further pulled down, so overcomes after a part of the synchronous Pivoting movement of the lever (5) and pawl (6) latter one idle stroke and then abuts against the upper edge of the sleeve (21). The nose (8) lifts the pawl (6) from the rotary member (4) and releases it. The torsion spring moves the rotary member (4) in the second rotational position in which the block (2) is released.

Bei einer Entriegelung über den Hebelgriff wird der Auslösestift (20) in der Hülse (21) in Richtung der Klinke (6) bewegt und drückt diese vom Drehglied (4) weg. Dabei wird die Nase (8) der Klinke (6) über die Verriegelungskante (19) angehoben und damit das Drehglied (4) freigegeben. Die Drehfeder bewegt dann das Drehglied (4) in die zweite Drehstellung, in der der Kloben (2) freigegeben wird.When unlocking the lever handle, the release pin (20) in the sleeve (21) in the direction of the pawl (6) moves and pushes them away from the rotary member (4). In this case, the nose (8) of the pawl (6) via the locking edge (19) is raised and thus the rotary member (4) released. The torsion spring then moves the rotary member (4) in the second rotational position in which the block (2) is released.

Die Öffnung durch Überhub, also durch nochmaliges Drücken der bereits geschlossenen Tür in Schließrichtung, bewirkt eine geringe Drehung des Drehglieds (4) im Uhrzeigersinn durch den Kloben (2). Dabei entfernt sich die Verriegelungskante (19) von der Nase (8) der Klinke (6), und die von der Drehfeder erzeugte Reibungskraft zwischen Nase (8) und Verriegelungskante (19) wird aufgehoben. Dies wiederum ermöglicht eine seitliche Bewegung der Klinke (6) auf eine andere Kulissenbahn (16), die keine Verriegelungskante (19) besitzt. Somit gerät die Klinke (6) in eine Außereingriffsstellung und das Drehglied (4) vollführt gegen den Uhrzeigersinn eine Drehung in die zweite Drehstellung, in der es den Kloben (2) freigibt.The opening by overstroke, so by pressing the already closed door again in the closing direction, causes a slight rotation of the rotary member (4) in a clockwise direction by the clamp (2). In this case, the locking edge (19) away from the nose (8) of the pawl (6), and the frictional force generated by the torsion spring between the nose (8) and locking edge (19) is released. This in turn allows a lateral movement of the pawl (6) on another slide track (16), which has no locking edge (19). Thus, the pawl (6) in a disengaged position and the rotary member (4) performs counterclockwise rotation in the second rotational position in which it releases the block (2).

Die vorbeschriebenen Öffnungsfunktionen können von der Waschmaschinensteuerung durch Stromzufuhr zum Piezomotor (39) und einer damit verbundenen Bewegung des Sperrgehäuses (29) deaktiviert werden.The above-described opening functions can be deactivated by the washing machine control by power supply to the piezomotor (39) and an associated movement of the lock housing (29).

Die Figuren 1 bis 3 zeigen das Sperrgehäuse (29) in einer sogenannten neutralen Stellung (I), in welcher es sich in den Figuren 1 und 2 in der äußersten linken Position befindet. Hier sind alle Sperrnasen in Außereingriffsstellung, so dass alle drei vorbeschriebenen Öffnungsvarianten möglich sind. Diese Stellung (I) nimmt das Sperrgehäuse (29) nach dem Programmende ein.The FIGS. 1 to 3 show the lock housing (29) in a so-called neutral position (I), in which it in the Figures 1 and 2 is in the leftmost position. Here are all locking lugs in disengaged position, so that all three above-described opening variants are possible. This position (I) occupies the lock housing (29) after the end of the program.

In den Figuren 4 und 5 hat der Piezomotor (39) das Sperrgehäuse (29) nach rechts in eine erste Verriegelungsstellung (II) bewegt. Diese Bewegung ist nur möglich, wenn sich das Drehglied (4) in der ersten Drehstellung befindet, d. h., die Tür muss geschlossen sein und der Kloben (2) vom Drehglied (4) fixiert werden. Ansonsten zeigt der Arretiervorsprung (17) nach oben und die dritte Sperrnase (43) fährt dagegen. Hierdurch wird eine Weiterbewegung des Sperrgehäuses (29) verhindert. Die ausbleibende Bewegung kann die Waschmaschinensteuerung daran erkennen, dass trotz eingeschaltetem Piezomotor (39) die Kontaktabschnitte (40) nicht an Spannung gelegt werden (bei Verwendung eines Gleichstrommotors wäre hier eine zusätzliche Stromsensierung mit Abschaltung notwendig, um den Motor nicht zu überlasten). Hierdurch kann ein Betrieb der Waschmaschine bei geöffneter Tür verhindert werden. In der in den Figuren 4 und 5 gezeigten Position, d. h., bei erfolgreicher Bewegung des Sperrgehäuses (29) in die erste Verriegelungsstellung (II), liegen die ersten Sperrnasen (33) jeweils unter dem unterem Rand (36) der Längsseiten (35) des Hebels (5). Hierdurch wird ein Schwenken des Hebels (5) gegen die Kraft der Feder (12) verhindert und damit die Notentriegelung gesperrt. Eine solche Sperrung ist nach dem Start eines Waschprogramms sinnvoll, um zu verhindern, dass bei überladener Trommel die Wäsche die Tür selbsttätig aufdrückt. Ein Öffnen der Tür durch Überhub und/oder durch Betätigung des Hebelgriffs kann in diesem Programmabschnitt noch zugelassen werden, da die Waschflotte noch nicht stark erhitzt ist und die Trommel nur mit Waschdrehzahl bewegt wird. Dem Benutzer wird so ermöglicht, Wäsche nachzulegen.In the FIGS. 4 and 5 the piezomotor (39) has moved the lock housing (29) to the right into a first locking position (II). This movement is only possible when the rotary member (4) is in the first rotational position, ie, the door must be closed and the clamp (2) are fixed by the rotary member (4). Otherwise, the locking projection (17) upwards and the third locking lug (43) moves against it. As a result, further movement of the lock housing (29) is prevented. The absence of motion can be detected by the washing machine controller in that, in spite of the piezo motor (39), the contact sections (40) are not energized (using a DC motor would require additional current sensing with shutdown to avoid overloading the motor). This can prevent operation of the washing machine with the door open. In the in the FIGS. 4 and 5 shown position, ie, upon successful movement of the lock housing (29) in the first locking position (II), the first locking lugs (33) respectively below the lower edge (36) of the longitudinal sides (35) of the lever (5). As a result, a pivoting of the lever (5) is prevented against the force of the spring (12) and thus locked the emergency release. Such a blockage is useful after the start of a wash program to prevent the laundry automatically pushing open the door when the drum is overloaded. An opening of the door by overstroke and / or by pressing the lever handle can still be allowed in this program section, since the wash liquor is not yet heated and the drum is moved only at washing speed. The user is thus allowed to refill laundry.

Die Figuren 6 und 7 zeigen das Sperrgehäuse (29) in einer zweiten Verriegelungsstellung (III). In dieser Position sperren die ersten Sperrnasen (33) weiterhin die Schwenkbewegung des Hebels (5) und damit die Notentriegelung. Die zweite Sperrnase (38) befindet sich neben der Klinke (6) und verhindert deren seitliche Schwenkbewegung auf die andere Kulissenbahn (16), die keine Verriegelungskante (19) besitzt. Hierdurch wird auch die Öffnungsmöglichkeit durch Überhub gesperrt. Gleichzeitig liegt der Steg (37) des Sperrgehäuses (29) über der Klinke (6) und blockiert eine Schwenkbewegung, die die Nase (8) senkrecht von der Verriegelungskante (19) abheben würde (verursacht durch den Auslösestift 20). Somit ist auch eine Öffnung durch den Hebelgriff gesperrt.The FIGS. 6 and 7 show the lock housing (29) in a second locking position (III). In this position, the first locking lugs (33) continue to lock the pivotal movement of the lever (5) and thus the emergency release. The second locking lug (38) is located next to the pawl (6) and prevents their lateral pivoting movement on the other slide track (16), which has no locking edge (19). As a result, the opening option is blocked by overstroke. At the same time the web (37) of the lock housing (29) over the pawl (6) and blocks a pivoting movement, which would lift the nose (8) perpendicularly from the locking edge (19) (caused by the release pin 20). Thus, an opening is blocked by the lever handle.

Die Waschmaschinensteuerung bewegt das Sperrgehäuse (29) in diese zweite Verriegelungsstellung (III), wenn dem Benutzer jegliche Öffnung der Tür untersagt werden soll, was beispielsweise bei stark erhitzter Waschflotte oder bei schneller Drehung der Trommel geboten ist.The washing machine control moves the locking housing (29) in this second locking position (III), if the user is to be prohibited any opening of the door, which is required, for example, in highly heated wash liquor or rapid rotation of the drum.

Die Figuren 8 und 9 zeigen eine zusätzliche Öffnungsmöglichkeit der Türverriegelung. Hier hat der Piezomotor (39) das Sperrgehäuse (29) über seine zweite Verriegelungsstellung (III) hinaus in eine Öffnungsstellung (IV) gefahren. In dieser Stellung (IV) wird die zweite Sperrnase (38) in den verbreiterten Bereich (42) der Klinke (6) bewegt, bis sie ihren Rand berührt und bei weiterer Bewegung in Figur 9 die Klinke (6) nach oben schwenkt. Dadurch wird die Nase (8) seitlich aus ihrer Position hinter der Verriegelungskante (19) gedrückt und gibt das Drehglied (4) frei. Die Drehfeder bewegt dann das Drehglied (4) in die zweite Drehstellung, in der der Kloben (2) nicht mehr arretiert ist. Durch die vorbeschriebene Wirkungsweise wird bei eingeschalteter Stromversorgung eine Öffnung der Tür über einen elektrischen Taster ermöglicht.The FIGS. 8 and 9 show an additional possibility of opening the door lock. Here, the piezomotor (39) has driven the lock housing (29) beyond its second locking position (III) into an open position (IV). In this position (IV), the second locking lug (38) in the widened portion (42) of the pawl (6) moves until it touches its edge and upon further movement in FIG. 9 the pawl (6) pivots upwards. As a result, the nose (8) is pressed laterally out of its position behind the locking edge (19) and releases the rotary member (4). The torsion spring then moves the rotary member (4) in the second rotational position in which the block (2) is no longer locked. The above-described mode of operation allows the door to be opened via an electrical switch when the power supply is switched on.

Claims (7)

  1. Door lock mechanism for electric appliances, more especially for washing machines, the said door lock mechanism having a block (2) secured to the door, a spring-loaded rotatable element (4), which, in a first rotational position, holds the block (2) in the closed position of the door and in a second rotational position, releases the block (2) for opening the door, a pivotable pawl (6), by means of which the rotatable element (4) is lockable in the first rotational position, wherein the rotatable element (4) is mounted so as to be rotatable on a pivotable lever (5), which is pivotable together with the rotatable element (4) in opposition to a spring force (12) in such a manner that the pawl (6) is displaced relative to the rotatable element (4) and releases the said rotatable element for a rotation into the second rotational position, and a blocking device with means with which the pivotal movement of the pawl is preventable, characterised in that the blocking device is in the form of a blocking housing (29) that is displaceable in the longitudinal direction of the pawl (6), at least one blocking lug (33, 38, 43) being integrally moulded on the inside walls of the said blocking housing, and in that, in this manner, it is possible to prevent, along with the pivotal movement of the pawl (6), also the pivotal movement of the lever (5), wherein the blocking device is displaceable from a neutral position (I), in which it releases the lever (5) and the pawl (6), into a first locking position (II), in which it prevents the pivotal movement of the lever (5) and allows the pivotal movement of the pawl (6), and into a second locking position (III), in which it prevents the pivotal movement of the lever (5) and of the pawl (6).
  2. Door lock mechanism according to claim 1, characterised in that the locking device is realised in such a manner that, when it is moving into an open position (IV), it pivots the pawl (6) in such a manner that it is displaced relative to the rotatable element (4) and releases the said rotatable element for a rotation into the second rotational position.
  3. Door lock mechanism according to at least one of claims 1 or 2, characterised in that the pawl (6) and its bearing arrangement and/or the rotatable element (4) are realised in such a manner that in the position which they assume when the rotatable element (4) is in the second rotational position, they block the movement of the blocking device from the neutral position (I) into another position (II - IV).
  4. Door lock mechanism according to claim 3, characterised in that a locking projection (17) is integrally moulded on the rotatable element (4), the said locking projection blocking the movement of the blocking device from the neutral position (I) into another position (II - IV) when the rotatable element (4) is in the second rotational position.
  5. Door lock mechanism according to at least one of claims 1 to 4, characterised by a piezomotor (39) for displacing the blocking device.
  6. Door lock mechanism according to at least one of claims 1 to 5, characterised by a first sensor device for recognising the position of the blocking device.
  7. Door lock mechanism according to at least one of claims 1 to 6, characterised by a trigger pin (20), which is mounted so as to be displaceable in the direction of the pawl (6) and by means of which the pawl (6) is transferable into a position in which it releases a rotation of the rotatable element (4) into the second rotational position.
EP04003730A 2003-03-19 2004-02-19 Door lock for electrical appliance, especially for a washing machine Expired - Lifetime EP1460163B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10312305 2003-03-19
DE10312305A DE10312305B4 (en) 2003-03-19 2003-03-19 Door lock for electrical appliances, in particular for washing machines

Publications (3)

Publication Number Publication Date
EP1460163A2 EP1460163A2 (en) 2004-09-22
EP1460163A3 EP1460163A3 (en) 2008-05-21
EP1460163B1 true EP1460163B1 (en) 2009-01-21

Family

ID=32797982

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04003730A Expired - Lifetime EP1460163B1 (en) 2003-03-19 2004-02-19 Door lock for electrical appliance, especially for a washing machine

Country Status (3)

Country Link
EP (1) EP1460163B1 (en)
AT (1) ATE421606T1 (en)
DE (2) DE10312305B4 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017006649B3 (en) 2017-07-13 2018-09-27 Emz-Hanauer Gmbh & Co. Kgaa Door lock for a household electrical appliance
DE102017006642A1 (en) 2017-07-13 2019-01-17 Emz-Hanauer Gmbh & Co. Kgaa Overlift door lock with locking mechanism
US11624209B2 (en) 2019-05-10 2023-04-11 Emz Hanauer Gmbh & Co. Kgaa Door lock for a domestic electrical appliance

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007009539B3 (en) * 2007-02-27 2008-07-31 Emz-Hanauer Gmbh & Co. Kgaa Door closing device for household device, comprises clamp and closing member, which is arranged between opened position and closed position in movable manner, where closing member is flexibly linked up in opened position
ITRM20080062A1 (en) 2008-02-05 2009-08-06 Bitron Spa PUSH-BUTTON DEVICE FOR LOCKING AND UNLOCKING A DOOR, IN PARTICULAR FOR THE DOOR OF A HOUSEHOLD APPLIANCE.
DE102022124424A1 (en) 2021-12-03 2023-06-07 Emz-Hanauer Gmbh & Co. Kgaa Push-push door latch and domestic electrical appliance equipped therewith

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919458C2 (en) * 1989-06-14 1996-04-04 Zangenstein Elektro Door lock for electrical devices, especially tumble dryers
DE19601230C2 (en) * 1996-01-15 2002-03-21 Zangenstein Elektro door lock
DE19601228C5 (en) * 1996-01-15 2007-08-16 Emz-Hanauer Gmbh & Co. Kgaa Device for locking the door of a washing machine or dishwasher
EP1217117B1 (en) * 2000-12-22 2005-03-02 Elektromanufaktur Zangenstein, Hanauer GmbH & Co. KGaA Apparatus to lock and unlock a door closure for an electrical appliance
DE10154850C1 (en) * 2001-11-08 2003-06-18 Ellenberger & Poensgen door lock

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017006649B3 (en) 2017-07-13 2018-09-27 Emz-Hanauer Gmbh & Co. Kgaa Door lock for a household electrical appliance
DE102017006642A1 (en) 2017-07-13 2019-01-17 Emz-Hanauer Gmbh & Co. Kgaa Overlift door lock with locking mechanism
US11174581B2 (en) 2017-07-13 2021-11-16 Emz-Hanauer Gmbh & Co. Kgaa Overlifting door latch with locking mechanism
DE102017006642B4 (en) 2017-07-13 2022-07-07 Emz-Hanauer Gmbh & Co. Kgaa Over-travel door lock with locking mechanism
US11624209B2 (en) 2019-05-10 2023-04-11 Emz Hanauer Gmbh & Co. Kgaa Door lock for a domestic electrical appliance
US11629528B2 (en) 2019-05-10 2023-04-18 Emz-Hanauer Gmbh & Co. Kgaa Door lock for a domestic electrical appliance with a movably arranged locking member
US11891838B2 (en) 2019-05-10 2024-02-06 Emz-Hanauer Gmbh & Co. Kgaa Door lock for a domestic electrical appliance

Also Published As

Publication number Publication date
DE502004008892D1 (en) 2009-03-12
DE10312305A1 (en) 2004-10-28
EP1460163A3 (en) 2008-05-21
ATE421606T1 (en) 2009-02-15
EP1460163A2 (en) 2004-09-22
DE10312305B4 (en) 2006-09-21

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