EP2251476A1 - Washing machine with a tub and a registration device - Google Patents

Washing machine with a tub and a registration device Download PDF

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Publication number
EP2251476A1
EP2251476A1 EP09006569A EP09006569A EP2251476A1 EP 2251476 A1 EP2251476 A1 EP 2251476A1 EP 09006569 A EP09006569 A EP 09006569A EP 09006569 A EP09006569 A EP 09006569A EP 2251476 A1 EP2251476 A1 EP 2251476A1
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EP
European Patent Office
Prior art keywords
magnet
tub
spring
washing machine
sensor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09006569A
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German (de)
French (fr)
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EP2251476B1 (en
Inventor
Michael Finke
Helge Müller
Rainer Bicker
Matthias Hollenhorst
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Miele und Cie KG
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Miele und Cie KG
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Priority to EP09006569.9A priority Critical patent/EP2251476B1/en
Priority to ES09006569T priority patent/ES2411911T3/en
Publication of EP2251476A1 publication Critical patent/EP2251476A1/en
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Publication of EP2251476B1 publication Critical patent/EP2251476B1/en
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    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/26—Imbalance; Noise level
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight

Definitions

  • the invention relates to a washing machine with a housing, with a swing-mounted in the housing tub with a rotatably mounted therein drum with an at least approximately horizontal axis of rotation, which is driven by a motor and a detection device for detecting the position and / or the position of the tub in the housing, which comprises a magnetic field sensor fixed to the housing with a corresponding magnet which is adapted to detect the flux density and the direction of the magnetic field emanating from the magnet.
  • Known drum washing machines have a tub suspended in the housing suspended in the tub, in which a horizontally rotatable drum is mounted.
  • the tub is due to the laundry or the imbalance in vibration, the best intercepted due to the resilient suspension and additional damping or not transferred to the housing or the floor.
  • the swing of the tub must be monitored so that at the risk of excessive vibration, the washing motion or the spin cycle can be stopped so that no damage caused by a collision of the tub with the housing or other component.
  • the laundry weight or an imbalance can be determined on the basis of the vibration behavior, so that compensatory measures, such as a redistribution of the laundry, can be made.
  • a washing machine which has a detection device for detecting the position and / or the position of the tub in the housing.
  • the detection device comprises a magnet attached to the movable tub, which is in operative connection with a sensor fixed relative to the housing.
  • the sensor is set up to determine the direction of the magnetic field in addition to the flux density of the magnetic field.
  • the sensor is not coupled to the magnet, so that it can happen that, in the event of an unfavorable movement of the tub, the magnet leaves the effective range of the sensor. This would lead to erroneous sensations, so that unnecessary measures for unbalance limitation would be initiated. In the worst case, strong movements could not be detected early as such, which would lead to unwanted strong vibrations.
  • the sensor is quite elaborate, since the effective range of the sensor itself must cover the entire deflection of the tub.
  • a washing machine with a vertically rotating drum in which a detection device for detecting vibrations or deflections of the tub is arranged in a holder which has a magnetic field sensor and a magnet inside.
  • the magnet is coupled with a holder with the tub, wherein the sensor is firmly positioned on the housing-side end of the holder.
  • the arrangement of the magnet relative to the sensor is designed such that only the intensity of the magnetic field can be detected, in which case only changes in distance between magnet and sensor can be detected. Lateral pendulum or horizontal displacement or rotational wobble can not be detected which is common in a drum type washing machine.
  • the invention is therefore based on the object to provide a drum washing machine, in which the detection of deflections or tilting of the tub is simple and reliable.
  • the achievable with the invention advantages are that a very accurate detection of the position and position of the tub is provided so that purposefully adapted measures to limit the deflections of the tub can be initiated.
  • the magnetic field sensor is substantially fixedly associated with the housing, wherein the cooperating with the magnetic field sensor magnet is mounted in a holding means which is coupled by means of at least one spring to the tub and thereby is in operative connection with him.
  • the holding means is adapted to allow movement of the magnet relative to the sensor, wherein the spring is adapted to transmit a movement and / or position change of the tub to the magnet.
  • the holding means is adapted to allow even changes in distance between the magnet and sensor or tilting or rotating movements of the magnet relative to the sensor.
  • the rotational movements and the translational movements can be detected in almost all spatial directions that are relevant for a tub in a washing machine.
  • the acquired readings may then be subjected to a mathematical transformation to infer the actual tub movement. This conversion is expediently carried out in a microcomputer of the control device.
  • the holding means is arranged in cooperation with the spring to transmit the movement of the tub stocky to the magnet.
  • the reduction makes it possible to limit larger deflections of the tub, which are in the range of 1 to 5 cm from the rest position to a deflection range of the magnet in the range of 1 to 10 mm, so that the effective range of the corresponding sensor can be kept correspondingly small.
  • the senor is arranged on a ball of a housing-mounted ball joint, and the holding means comprises a pan, which surrounds the ball at least partially, wherein the magnet is arranged in the holding means spaced from the sensor.
  • the magnet is mounted on a carrier movable in the holding part, which by means of another spring within the carrier, the coupling to the spring, which is connected to the tub, provides.
  • the ratio of the spring force or spring constant of the other spring relative to the outer spring, which is coupled to the tub the reduction in the distance range between the magnet and the sensor is determined.
  • the lye container-side end of the spring is coupled to the front, upper region of the lye container in the operating position of the washing machine.
  • This Ankoppelstelle is particularly suitable for a tub of a drum washing machine, since almost all movements, at least two rotational movements and a translational movement of the tub, as described above, perform precisely in this area, a detectable movement.
  • the holding means is designed as a piston-shaped guide body, which is arranged in the interior of the tension spring designed as a retaining spring, wherein the guide body is coupled in an area with the spring, which is closer to the housing end than to the tub side end of the tension spring in an expedient development ,
  • the guide body is thus inside the helically coiled retaining spring.
  • the retaining spring has a curved end on the housing side, which rests on a curved support, for providing movements in different rotational and pendulum directions on the support, wherein the sensor is mounted facing in the direction of the spring or the magnet in the region of the support.
  • the guide body is formed at least partially friction with the spring for damping natural oscillations of the spring.
  • the measurement accuracy is further improved because incorrect measurements due to short-term changes in distance due to natural oscillations of the spring are avoided or at least reduced.
  • the detection device has at least one further magnetic field sensor with a further magnet operatively connected to this sensor, wherein the further magnet is coupled to the attachment of the first magnet to the tub.
  • the Fig. 1 shows in a sketched view of a washing machine 1, which comprises a housing 2 with a tub 4 mounted therein swingably movable.
  • the tub 4 is suspended by means of indicated spring elements 11 swingably in the housing 2 and damped by means of damper 12 with respect to its movement.
  • a rotatable drum 3 is arranged with an at least approximately horizontal axis of rotation 6.
  • the drum 3 is drivable with a motor 5, so that the rotational movement is provided during washing or spinning.
  • the washing machine 1 further comprises a detection device 7 for detecting the position and / or position and / or the movement of the tub 4 relative to the housing 2.
  • a holding means 14 is adapted to the magnet 9 (FIG. Fig.
  • the washing machine 1 has a frontal loading opening, the detection device 7, however, in the same way for a coat-loadable washing machine, such as a top loader, used.
  • Fig. 2 shows the detection device 7 in a sketched, detailed view.
  • the detection device 7 comprises a magnetic field sensor 8 which is fixedly fixed relative to the housing 2.
  • a magnet 9 is arranged in the effective range of the sensor 8, which can be moved by means of the spring 13, the movement being caused by the oscillation or change in position of the tub 4.
  • the arrow indications x, y, z indicate that translational movements of the tub lead in at least almost all three spatial directions to corresponding evaluable movements of the magnet 9 relative to the magnetic field sensor 8, in which case the translational movement in the vertical direction ytrans can be detected.
  • Rotational movements xrot or zrot of the tub 4 are also transmitted to the magnet 9 in a staggered manner, so that the actual position and movement of the tub 4 can be determined by means of a mathematical transformation of the detected sensor signal.
  • the microcomputer of the control device 22 ( Fig. 1 ), to which the signals of the sensor 8 are supplied.
  • the transformation of the sensor signals into data which can be utilized by the controller 22 can alternatively also be effected by means of a separate electronic circuit or a separate microprocessor circuit, which is preferably formed with the sensor 8 as a unit.
  • Fig. 3 shows the execution of the washing machine 1 with a different coupling of the magnet with the tub 4.
  • the tub 4 is suspended by means of retaining springs 11 within the housing 2 swinging.
  • damper 12 are attached to the tub, which are supported against the underside of the housing 2.
  • the detection device 7 comprises a piston-shaped guide means 19 which surrounds the magnet 9 (FIG. Fig. 4 ) wearing.
  • the guide means 19 with the magnet is arranged inside the holding spring 11 designed as a helical spring.
  • the detection device 7 in a further embodiment in a further retaining spring 11a, a second guide means 19a, which carries a further magnet 9a.
  • Each magnet 9, 9a is assigned a separate sensor 8, 8a in each case.
  • the signals generated by each sensor 8, 8a are correspondingly evaluated in order to respectively calculate and determine the actual momentary position and movement of the tub 4 therefrom.
  • Fig. 4 shows the detection device 7 for this embodiment.
  • the housing-side end 20 of the retaining spring 11 is curved or arc-shaped, which rests on a curved support 21. This allows the spring of a pivoting movement of the tub ( Fig. 3 ) follow, without the helical spring itself is bent.
  • the piston-shaped guide body 19 is arranged, which carries the magnet 9 on its end facing the housing-side support 21.
  • the magnetic field sensor 8, which in this example is located on a printed circuit board 23, which in this example also carries an electronic circuit or a microprocessor circuit for converting or transforming the measuring signals, is fixed to the support 21 facing the spring or magnet 9.
  • the guide body 19 is frictionally inserted in the retaining spring 11, so that natural oscillations of the spring 11 are attenuated or prevented in the region of the magnet 9, whereby unwanted false measurements are avoided.
  • the guide body 19 is attached to the mounting location 25 on the spring 11, wherein the mounting location 25 is closer to the housing-side end 20, as to the tub side end 24. For the reduction of the movement is not the spatial arrangement alone decisive, but the ratio of the smaller spring travel between mounting location 25 and housing-side end 20 for larger travel of the mounting location 25 to the tub side end 24th

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)

Abstract

The machine has a suds container (4) arranged in a housing (2). A detection device detects position and/or condition of the container. The device has a magnetic field sensor (8) with a magnet that detects magnetic flux density and magnetic fields. The sensor is fixedly arranged in the housing. The magnet cooperating with the sensor is arranged in a retaining unit (14). The retaining unit is coupled at the container by springs (13, 17). The retaining unit permits movement of the magnets relative to the sensor. The springs transmit movement and position change of the container to the magnet.

Description

Die Erfindung betrifft eine Waschmaschine mit einem Gehäuse, mit einem in dem Gehäuse schwingend befestigten Laugenbehälter mit einer darin drehbar angeordneten Trommel mit einer wenigstens annähernd horizontalen Drehachse, die mittels eines Motors antreibbar ist und einer Erfassungseinrichtung zur Erfassung der Position und/oder der Lage des Laugenbehälters in dem Gehäuse, die einen am Gehäuse befestigten Magnetfeldsensor mit einem korrespondierenden Magneten umfasst, der dazu eingerichtet ist, die Flussdichte und die Richtung des vom Magneten ausgehenden Magnetfeldes zu erfassen.The invention relates to a washing machine with a housing, with a swing-mounted in the housing tub with a rotatably mounted therein drum with an at least approximately horizontal axis of rotation, which is driven by a motor and a detection device for detecting the position and / or the position of the tub in the housing, which comprises a magnetic field sensor fixed to the housing with a corresponding magnet which is adapted to detect the flux density and the direction of the magnetic field emanating from the magnet.

Bekannte Trommelwaschmaschinen besitzen einen im Gehäuse schwingbeweglich aufgehängten Laugenbehälter, in dem eine horizontal drehbare Trommel gelagert ist. Beim Betrieb der Waschmaschine gerät der Laugenbehälter aufgrund des Wäschefalls oder der Unwuchten in Schwingung, die aufgrund der federnden Aufhängung und einer zusätzlichen Dämpfung möglichst gut abgefangen bzw. nicht auf das Gehäuse oder den Boden übertragen werden. Das Schwingen des Laugenbehälters muss jedoch überwacht werden, damit bei der Gefahr von zu großen Schwingungen die Waschbewegung oder der Schleudergang gestoppt werden kann, damit keine Schäden durch eine Kollision des Laugenbehälters mit dem Gehäuse oder einem anderen Bauteil entstehen. Ferner kann anhand des Schwingverhaltens das Wäschegewicht oder eine Unwucht ermittelt werden, so dass ausgleichende Maßnahmen, wie eine Neuverteilung der Wäsche, vorgenommen werden können.Known drum washing machines have a tub suspended in the housing suspended in the tub, in which a horizontally rotatable drum is mounted. During operation of the washing machine, the tub is due to the laundry or the imbalance in vibration, the best intercepted due to the resilient suspension and additional damping or not transferred to the housing or the floor. However, the swing of the tub must be monitored so that at the risk of excessive vibration, the washing motion or the spin cycle can be stopped so that no damage caused by a collision of the tub with the housing or other component. Furthermore, the laundry weight or an imbalance can be determined on the basis of the vibration behavior, so that compensatory measures, such as a redistribution of the laundry, can be made.

Aus der DE 20 2007 002 626 U1 ist eine Waschmaschine bekannt, die eine Erfassungseinrichtung zur Erfassung der Position und/oder der Lage des Laugenbehälters in dem Gehäuse besitzt. Die Erfassungseinrichtung umfasst einen am beweglichen Laugenbehälter angebrachten Magneten, der in Wirkverbindung mit einem relativ zum Gehäuse feststehenden Sensor steht. Der Sensor ist dazu eingerichtet, neben der Flussdichte des Magnetfeldes auch die Richtung des Magnetfeldes zu bestimmen. Der Sensor ist hierbei nicht mit dem Magneten gekoppelt, so dass es vorkommen kann, dass bei einer ungünstigen Bewegung des Laugenbehälters der Magnet den Wirkbereich des Sensors verlässt. Hierbei würde es zu Fehlsensierungen kommen, so dass unnötige Maßnahmen zur Unwuchtbegrenzung eingeleitet würden. Im schlimmeren Fall könnten starke Bewegungen nicht frühzeitig als solche erkannt werden, was zu unerwünschten starken Vibrationen führen würde. Ferner ist der Sensor recht aufwändig gestaltet, da der Wirkbereich des Sensors selbst den gesamten Auslenkungsweg des Laugenbehälters abdecken muss.From the DE 20 2007 002 626 U1 a washing machine is known, which has a detection device for detecting the position and / or the position of the tub in the housing. The detection device comprises a magnet attached to the movable tub, which is in operative connection with a sensor fixed relative to the housing. The sensor is set up to determine the direction of the magnetic field in addition to the flux density of the magnetic field. In this case, the sensor is not coupled to the magnet, so that it can happen that, in the event of an unfavorable movement of the tub, the magnet leaves the effective range of the sensor. This would lead to erroneous sensations, so that unnecessary measures for unbalance limitation would be initiated. In the worst case, strong movements could not be detected early as such, which would lead to unwanted strong vibrations. Furthermore, the sensor is quite elaborate, since the effective range of the sensor itself must cover the entire deflection of the tub.

Aus der DE 100 22 609 A1 ist es bekannt, am Umfang des Laugenbehälters mehrere Sensoren anzubringen, um eine genaue Erfassung von unwuchtbedingten Bewegungen oder Auslenkungen des Laugenbehälters zu erreichen. Diese Anordnung ist aufgrund der Verschaltung von mehreren Sensoren recht aufwändig.From the DE 100 22 609 A1 It is known to attach a plurality of sensors on the circumference of the tub in order to achieve an accurate detection of unbalanced movements or deflections of the tub. This arrangement is quite complex due to the interconnection of multiple sensors.

Aus der EP 0 972 874 B1 ist eine Waschmaschine mit einer vertikal drehenden Trommel bekannt, bei der eine Erfassungseinrichtung zur Erkennung von Vibrationen oder Auslenkungen des Laugenbehälters in einer Halterung angeordnet ist, die im Inneren einen Magnetfeldsensor und einem Magneten aufweist. Hierbei ist der Magnet mit einer Halterung mit dem Laugenbehälter gekoppelt, wobei der Sensor am gehäuseseitigen Ende der Halterung fest positioniert ist. Die Anordnung des Magneten relativ zum Sensor ist derart gestaltet, dass nur die Intensität des Magnetfeldes erfasst werden kann, wobei hierbei nur Abstandsänderungen zwischen Magnet und Sensor erfasst werden können. Seitliche Pendelbewegungen oder horizontale Verschiebebewegungen oder Dreh-Taumelbewegungen können nicht erfasst werden, die bei einer Trommelwaschmaschine häufig vorkommen.From the EP 0 972 874 B1 a washing machine with a vertically rotating drum is known in which a detection device for detecting vibrations or deflections of the tub is arranged in a holder which has a magnetic field sensor and a magnet inside. In this case, the magnet is coupled with a holder with the tub, wherein the sensor is firmly positioned on the housing-side end of the holder. The arrangement of the magnet relative to the sensor is designed such that only the intensity of the magnetic field can be detected, in which case only changes in distance between magnet and sensor can be detected. Lateral pendulum or horizontal displacement or rotational wobble can not be detected which is common in a drum type washing machine.

Der Erfindung liegt somit die Aufgabe zugrunde, eine Trommel-Waschmaschine bereit zu stellen, bei der die Erfassung von Auslenkungen bzw. Verkippungen des Laugenbehälters einfach und zuverlässig erfolgt.The invention is therefore based on the object to provide a drum washing machine, in which the detection of deflections or tilting of the tub is simple and reliable.

Erfindungsgemäß wird dieses Problem durch die Merkmale des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den abhängigen Ansprüchen 2 bis 11.According to the invention, this problem is solved by the features of patent claim 1. Advantageous embodiments and further developments of the invention will become apparent from the dependent claims 2 to 11.

Die mit der Erfindung erreichbaren Vorteile bestehen darin, dass eine sehr genaue Erfassung der Position und Lage des Laugenbehälters bereitgestellt wird, so dass gezielt angepasste Maßnahmen zur Begrenzung der Auslenkungen des Laugenbehälters eingeleitet werden können.The achievable with the invention advantages are that a very accurate detection of the position and position of the tub is provided so that purposefully adapted measures to limit the deflections of the tub can be initiated.

Bei der erfindungsgemäßen Waschmaschine ist der Magnetfeldsensor im Wesentlichen fest dem Gehäuse zugeordnet, wobei der mit dem Magnetfeldsensor zusammenwirkende Magnet in einem Haltemittel angebracht ist, das mittels zumindest einer Feder an dem Laugenbehälter angekoppelt ist und dadurch mit ihm in Wirkverbindung steht. Das Haltemittel ist dazu ausgebildet, eine Bewegung des Magneten relativ zum Sensor zuzulassen, wobei die Feder dazu eingerichtet ist, eine Bewegung und/oder Positionsänderung des Laugenbehälters auf den Magneten zu übertragen. Durch diese Anordnung wird die Laugenbehälterbewegung indirekt auf den Magneten übertragen, wobei das Haltemittel den Magneten stets im optimalen Wirkbereich des Magnetfeldsensors führt bzw. begrenzt. Dadurch werden Fehlsensierungen weitestgehend vermieden, sodass ein zuverlässiger Betrieb der Waschmaschine auch bei ungünstigen Betriebsbedingungen gegeben ist. Durch die optimalen Betriebsbedingungen für den Sensor können die Positionswerte schneller erfasst und ausgewertet werden. Auch die Beladung der Trommel, bei der die gewichtsbedingte Absenkung des Laugenbehälters erfasst wird, kann mit dieser Erfassungseinrichtung gemessen bzw. bestimmt werden.In the washing machine according to the invention, the magnetic field sensor is substantially fixedly associated with the housing, wherein the cooperating with the magnetic field sensor magnet is mounted in a holding means which is coupled by means of at least one spring to the tub and thereby is in operative connection with him. The holding means is adapted to allow movement of the magnet relative to the sensor, wherein the spring is adapted to transmit a movement and / or position change of the tub to the magnet. By this arrangement, the tub container movement is indirectly transmitted to the magnet, wherein the holding means always guides or limits the magnet in the optimum effective range of the magnetic field sensor. As a result, false sensations are largely avoided, so that a reliable operation of the washing machine is given even under unfavorable operating conditions. By the optimal Operating conditions for the sensor, the position values can be detected and evaluated faster. The loading of the drum, in which the weight-related reduction of the tub is detected, can be measured or determined with this detection device.

In einer vorteilhaften Ausführung ist das Haltemittel dazu eingerichtet, gleichmäßige Abstandsänderungen zwischen Magneten und Sensor oder Kipp- oder Drehbewegungen des Magneten relativ zum Sensor zuzulassen. Somit können die rotatorischen Bewegungen und die translatorischen Bewegungen in nahezu allen Raumrichtungen erfasst werden, die für einen Laugenbehälter in einer Waschmaschine relevant sind. Die erfassten Messwerte können dann einer mathematischen Transformation unterworfen werden, um auf die tatsächliche Laugenbehälterbewegung zu schließen. Diese Umrechnung erfolgt zweckmäßigerweise in einem Mikrocomputer der Steuereinrichtung.In an advantageous embodiment, the holding means is adapted to allow even changes in distance between the magnet and sensor or tilting or rotating movements of the magnet relative to the sensor. Thus, the rotational movements and the translational movements can be detected in almost all spatial directions that are relevant for a tub in a washing machine. The acquired readings may then be subjected to a mathematical transformation to infer the actual tub movement. This conversion is expediently carried out in a microcomputer of the control device.

In einer vorteilhaften Weiterbildung ist das Haltemittel im Zusammenwirken mit der Feder dazu eingerichtet, die Bewegung des Laugenbehälters untersetzt auf den Magneten zu übertragen. Die Untersetzung ermöglicht es, größere Auslenkungen des Laugenbehälters, die im Bereich von 1 bis 5 cm gegenüber der Ruhelage liegen, auf einen Auslenkungsbereich des Magneten im Bereich von 1 bis 10 mm zu begrenzen, sodass der Wirkbereich des korrespondierenden Sensors entsprechend klein gehalten werden kann.In an advantageous development of the holding means is arranged in cooperation with the spring to transmit the movement of the tub stocky to the magnet. The reduction makes it possible to limit larger deflections of the tub, which are in the range of 1 to 5 cm from the rest position to a deflection range of the magnet in the range of 1 to 10 mm, so that the effective range of the corresponding sensor can be kept correspondingly small.

Zur Bereitstellung der optimalen Bewegungsfreiheit des Magneten ist der Sensor an einer Kugel eines am Gehäuse angebrachten Kugelgelenks angeordnet, und das Haltemittel umfasst eine Pfanne, die die Kugel zumindest teilweise umgreift, wobei der Magnet im Haltemittel beabstandet zum Sensor angeordnet ist.To provide the optimum freedom of movement of the magnet, the sensor is arranged on a ball of a housing-mounted ball joint, and the holding means comprises a pan, which surrounds the ball at least partially, wherein the magnet is arranged in the holding means spaced from the sensor.

Zur Bereitstellung der optimalen Bewegungsfreiheit hinsichtlich der Variation des Abstandes des Magneten zum Sensor ist es zweckmäßig, dass der Magnet auf einem im Halteteil beweglichen Träger befestigt ist, der mittels einer weiteren Feder innerhalb des Trägers die Kopplung zur Feder, die mit dem Laugenbehälter verbunden ist, bereitstellt. Durch das Verhältnis der Federkraft bzw. Federkonstanten der weiteren Feder gegenüber der äußeren Feder, welche an den Laugenbehälter angekoppelt ist, wird die Untersetzung hinsichtlich des Abstandsbereichs zwischen Magnet und Sensor bestimmt.In order to provide the optimum freedom of movement with regard to the variation of the distance of the magnet to the sensor, it is expedient that the magnet is mounted on a carrier movable in the holding part, which by means of another spring within the carrier, the coupling to the spring, which is connected to the tub, provides. By the ratio of the spring force or spring constant of the other spring relative to the outer spring, which is coupled to the tub, the reduction in the distance range between the magnet and the sensor is determined.

In einer vorteilhaften Weiterbildung ist in betriebsgemäßer Aufstellposition der Waschmaschine das laugenbehälterseitige Ende der Feder am vorderen, oberen Bereich des Laugenbehälters angekoppelt. Diese Ankoppelstelle ist bei einem Laugenbehälter einer Trommelwaschmaschine besonders geeignet, da nahezu alle Bewegungen, zumindest zwei rotatorische Bewegungen und eine translatorische Bewegung des Laugenbehälters, wie oben beschrieben, genau in diesem Bereich auch eine erfassbare Bewegung vollziehen.In an advantageous development, the lye container-side end of the spring is coupled to the front, upper region of the lye container in the operating position of the washing machine. This Ankoppelstelle is particularly suitable for a tub of a drum washing machine, since almost all movements, at least two rotational movements and a translational movement of the tub, as described above, perform precisely in this area, a detectable movement.

Bei Haushaltwaschmaschinen ist es aus Kostengründen weit verbreitet, den Laugenbehälter innerhalb des Gehäuses oberseitig mittels Haltefedern schwingbeweglich aufzuhängen. Bei dieser Art der Aufhängung ist es vorteilhaft, das Haltemittel an oder in der Haltefeder derart anzubringen, dass eine Untersetzung der Bewegung des Laugenbehälters zum Magneten bereitgestellt wird. Hierdurch wird die Übertragungsfeder eingespart, es muss jedoch eine entsprechende mathematische Transformation bzw. rechnerische Bewertung der Messsignale vorgenommen werden, da die Haltefeder üblicherweise nicht im optimalen Erfassungsbereich am Laugenbehälter angekoppelt ist.For household washing machines, it is widely used for cost reasons, hanging the tub in the housing on the upper side by means of retaining springs swinging. In this type of suspension, it is advantageous to attach the holding means on or in the retaining spring such that a reduction of the movement of the tub to the magnet is provided. As a result, the transmission spring is saved, but it must be made a corresponding mathematical transformation or mathematical evaluation of the measurement signals, since the retaining spring is usually not coupled in the optimal detection range on the tub.

Für diese Waschmaschinen ist in einer zweckmäßigen Weiterbildung das Haltemittel als kolbenförmiger Führungskörper ausgeführt, der im Inneren der als Zugfeder ausgebildeten Haltefeder angeordnet ist, wobei der Führungskörper in einem Bereich mit der Feder gekoppelt ist, der näher zum gehäuseseitigen Ende als zum laugenbehälterseitigen Ende der Zugfeder liegt. Der Führungskörper liegt also im Inneren der schraubenförmig gewendelten Haltefeder.For these washing machines, the holding means is designed as a piston-shaped guide body, which is arranged in the interior of the tension spring designed as a retaining spring, wherein the guide body is coupled in an area with the spring, which is closer to the housing end than to the tub side end of the tension spring in an expedient development , The guide body is thus inside the helically coiled retaining spring.

Die Haltefeder weist gehäuseseitig ein gekrümmtes Ende auf, das auf einer gekrümmten Auflage aufliegt, zur Bereitstellung von Bewegungen in verschiedenen Dreh- und Pendelrichtungen an der Auflage, wobei der Sensor in Richtung der Feder bzw. des Magneten weisend im Bereich der Auflage angebracht ist. Somit wird gehäuseseitig eine einfache und zuverlässige Kopplung der Haltefeder erreicht.The retaining spring has a curved end on the housing side, which rests on a curved support, for providing movements in different rotational and pendulum directions on the support, wherein the sensor is mounted facing in the direction of the spring or the magnet in the region of the support. Thus, a simple and reliable coupling of the retaining spring is achieved on the housing side.

In einer vorteilhaften Weiterbildung ist der Führungskörper zumindest bereichweise mit der Feder reibwirkend zur Dämpfung von Eigenschwingungen der Feder ausgebildet. Dadurch wird die Messgenauigkeit nochmals verbessert, da Fehlmessungen aufgrund kurzzeitiger Abstandsänderungen aufgrund von Eigenschwingungen der Feder vermieden oder zumindest vermindert werden.In an advantageous development of the guide body is formed at least partially friction with the spring for damping natural oscillations of the spring. As a result, the measurement accuracy is further improved because incorrect measurements due to short-term changes in distance due to natural oscillations of the spring are avoided or at least reduced.

In einer anderen vorteilhaften Ausführung weist die Erfassungseinrichtung zumindest einen weiteren Magnetfeldsensor mit einem weiteren mit diesem Sensor in Wirkverbindung stehendem Magneten auf, wobei der weitere Magnet beabstandet zu der Ankopplung des ersten Magneten an den Laugenbehälter angekoppelt ist. Dadurch kann auf einfache Weise mit einfachen Sensoren eine sehr präzise Erfassung der Laugenbehälterbewegung erreicht werden, da aufgrund der bekannten Verhältnisse hinsichtlich der Bewegung an den beiden Ankopplungsorten eine einfache rechnerische Transformation der Messsignale möglich ist.In another advantageous embodiment, the detection device has at least one further magnetic field sensor with a further magnet operatively connected to this sensor, wherein the further magnet is coupled to the attachment of the first magnet to the tub. As a result, a very precise detection of the tub container movement can be achieved in a simple manner with simple sensors, since due to the known conditions with regard to the movement at the two coupling locations, a simple mathematical transformation of the measuring signals is possible.

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

Fig. 1:
eine skizzierte Ansicht einer Waschmaschine mit der Erfassungseinrichtung;
Fig. 2
eine skizzierte Detailansicht der Erfassungseinrichtung;
Fig. 3
eine skizzierte Ansicht einer Waschmaschine mit der Erfassungseinrichtung in einer alternativen Ausführung und
Fig. 4
eine skizzierte Detailansicht der alternativen Ausführung.
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. Show it:
Fig. 1:
a sketched view of a washing machine with the detection device;
Fig. 2
a sketched detail view of the detection device;
Fig. 3
a sketched view of a washing machine with the detection device in an alternative embodiment and
Fig. 4
a sketched detail view of the alternative embodiment.

Die Fig. 1 zeigt in einer skizzierten Ansicht eine Waschmaschine 1, welche ein Gehäuse 2 mit einem darin schwingbeweglich angebrachten Laugenbehälter 4 umfasst. Der Laugenbehälter 4 ist mittels angedeuteter Federelemente 11 schwingbeweglich in dem Gehäuse 2 aufgehängt und mittels Dämpfer 12 hinsichtlich seiner Bewegung gedämpft. In dem Laugenbehälter 4 ist eine drehbare Trommel 3 mit einer wenigstens annähernd horizontalen Drehachse 6 angeordnet. Die Trommel 3 ist mit einem Motor 5 antreibbar, so dass die Drehbewegung beim Waschen oder beim Schleudern bereitgestellt wird. Die Waschmaschine 1 umfasst ferner eine Erfassungseinrichtung 7 zur Erfassung der Position und/oder Lage und/oder der Bewegung des Laugenbehälters 4 relativ zum Gehäuse 2. Eine Haltemittel 14 ist dazu eingerichtet, den Magneten 9 (Fig. 2) zu halten, wobei von diesem Haltemittel ausgehend sich die Feder 13 zur Ankopplung des Haltemittels 13 bzw. des Magneten 9 an den Laugenbehälter 4 erstreckt. Die Feder 13 ist an dem vorderen oberen Bereich 18 an der Laugenbehälterwand außenseitig befestigt. Die Richtungsangaben beziehen sich auf die betriebsgemäße Aufstellposition der Waschmaschine 1. In dem gezeigten Beispiel hat die Waschmaschine 1 eine stirnseitige Beladungsöffnung, die Erfassungseinrichtung 7 ist jedoch in gleicher Weise für eine mantelbeschickbare Waschmaschine, wie beispielsweise einen Toplader, verwendbar.The Fig. 1 shows in a sketched view of a washing machine 1, which comprises a housing 2 with a tub 4 mounted therein swingably movable. The tub 4 is suspended by means of indicated spring elements 11 swingably in the housing 2 and damped by means of damper 12 with respect to its movement. In the tub 4 a rotatable drum 3 is arranged with an at least approximately horizontal axis of rotation 6. The drum 3 is drivable with a motor 5, so that the rotational movement is provided during washing or spinning. The washing machine 1 further comprises a detection device 7 for detecting the position and / or position and / or the movement of the tub 4 relative to the housing 2. A holding means 14 is adapted to the magnet 9 (FIG. Fig. 2 ), wherein the spring 13 for coupling the holding means 13 or the magnet 9 to the tub 4 extends from this holding means. The spring 13 is attached to the front upper portion 18 on the tub wall on the outside. In the example shown, the washing machine 1 has a frontal loading opening, the detection device 7, however, in the same way for a coat-loadable washing machine, such as a top loader, used.

Fig. 2 zeigt die Erfassungseinrichtung 7 in einer skizzierten, detaillierten Ansicht. In dieser Ausführung umfasst die Erfassungseinrichtung 7 einen Magnetfeldsensor 8, der ortsfest relativ zum Gehäuse 2 befestigt ist. Ein Magnet 9 ist im Wirkbereich des Sensors 8 angeordnet, der mittels der Feder 13 bewegt werden kann, wobei die Bewegung von der Schwingung oder Positionsänderung des Laugenbehälters 4 verursacht wird. Die Pfeilangaben x, y, z deuten an, dass translatorische Bewegungen des Laugenbehälters in zumindest nahezu allen drei Raumrichtungen zu entsprechend auswertbaren Bewegungen des Magneten 9 relativ zum Magnetfeldsensor 8 führen, wobei hier die translatorische Bewegung in vertikaler Richtung ytrans erfasst werden kann. Auch rotatorische Bewegungen xrot oder zrot des Laugenbehälters 4 werden untersetzt an den Magneten 9 übertragen, so dass mittels einer rechnerischen Transformation des erfassten Sensorsignals die tatsächliche Position und Bewegung des Laugenbehälters 4 ermittelt werden kann. Hierzu wird der Mikrocomputer der Steuereinrichtung 22 (Fig. 1) verwendet, der die Signale des Sensors 8 zugeführt werden. Die Transformation der Sensorsignale in von der Steuerung 22 verwertbare Daten kann alternativ auch mittels einer separaten elektronischen Schaltung oder einer separaten Mikroprozessorschaltung durchgeführt werden, die vorzugsweise mit dem Sensor 8 als Einheit ausgebildet ist. Fig. 2 shows the detection device 7 in a sketched, detailed view. In this embodiment, the detection device 7 comprises a magnetic field sensor 8 which is fixedly fixed relative to the housing 2. A magnet 9 is arranged in the effective range of the sensor 8, which can be moved by means of the spring 13, the movement being caused by the oscillation or change in position of the tub 4. The arrow indications x, y, z indicate that translational movements of the tub lead in at least almost all three spatial directions to corresponding evaluable movements of the magnet 9 relative to the magnetic field sensor 8, in which case the translational movement in the vertical direction ytrans can be detected. Rotational movements xrot or zrot of the tub 4 are also transmitted to the magnet 9 in a staggered manner, so that the actual position and movement of the tub 4 can be determined by means of a mathematical transformation of the detected sensor signal. For this purpose, the microcomputer of the control device 22 ( Fig. 1 ), to which the signals of the sensor 8 are supplied. The transformation of the sensor signals into data which can be utilized by the controller 22 can alternatively also be effected by means of a separate electronic circuit or a separate microprocessor circuit, which is preferably formed with the sensor 8 as a unit.

Fig. 3 zeigt die Ausführung der Waschmaschine 1 mit einer anderen Kopplung des Magneten mit dem Laugenbehälter 4. Wie im ersten Beispiel ist der Laugenbehälter 4 mittels Haltefedern 11 innerhalb des Gehäuses 2 schwingbeweglich aufgehängt. Zur Schwingungsdämpfung sind am Laugenbehälter 4 Dämpfer 12 angebracht, die sich gegen die Unterseite des Gehäuses 2 abstützen. Die Erfassungseinrichtung 7 umfasst ein kolbenförmiges Führungsmittel 19, das den Magneten 9 (Fig. 4) trägt. Das Führungsmittel 19 mit dem Magneten ist innerhalb der als Schraubfeder ausgeführten Haltefeder 11 angeordnet. Zur genaueren Erfassung umfasst die Erfassungseinrichtung 7 in einer weiteren Ausführung in einer weiteren Haltefeder 11a ein zweites Führungsmittel 19a, das einen weiteren Magneten 9a trägt. Jedem Magneten 9, 9a ist jeweils ein separater Sensor 8, 8a zugeordnet. Die von jedem Sensor 8, 8a erzeugten Signale werden entsprechend bewertet, um daraus jeweils die tatsächliche momentane Position und Bewegung des Laugenbehälters 4 zu berechnen bzw. zu bestimmen. Fig. 3 shows the execution of the washing machine 1 with a different coupling of the magnet with the tub 4. As in the first example, the tub 4 is suspended by means of retaining springs 11 within the housing 2 swinging. For vibration damping 4 damper 12 are attached to the tub, which are supported against the underside of the housing 2. The detection device 7 comprises a piston-shaped guide means 19 which surrounds the magnet 9 (FIG. Fig. 4 ) wearing. The guide means 19 with the magnet is arranged inside the holding spring 11 designed as a helical spring. For a more accurate detection, the detection device 7 in a further embodiment in a further retaining spring 11a, a second guide means 19a, which carries a further magnet 9a. Each magnet 9, 9a is assigned a separate sensor 8, 8a in each case. The signals generated by each sensor 8, 8a are correspondingly evaluated in order to respectively calculate and determine the actual momentary position and movement of the tub 4 therefrom.

Fig. 4 zeigt die Erfassungseinrichtung 7 für diese Ausführung. Das gehäuseseitige Ende 20 der Haltefeder 11 ist gekrümmt bzw. bogenförmig ausgebildet, das auf einer gekrümmten Auflage 21 aufliegt. Dadurch kann die Feder einer Schwenkbewegung des Laugenbehälters (Fig. 3) nachfolgen, ohne dass die Schraubfeder selbst verbogen wird. Innerhalb der Federwindungen ist der kolbenförmige Führungskörper 19 angeordnet, der auf seinem zur gehäuseseitigen Auflage 21 weisenden Ende den Magneten 9 trägt. An der Auflage 21 ist zur Feder bzw. zum Magneten 9 weisend der Magnetfeldsensor 8 befestigt, der sich in diesem Beispiel auf einer Leiterplatte 23 befindet, die in diesem Beispiel ferner eine elektronische Schaltung oder eine Mikroprozessorschaltung zur Umsetzung bzw. Transformation der Messsignale trägt. Der Führungskörper 19 ist reibwirkend in der Haltefeder 11 eingesetzt, so dass Eigenschwingungen der Feder 11 im Bereich des Magneten 9 gedämpft bzw. unterbunden werden, wodurch unerwünschte Fehlmessungen vermieden werden. Der Führungskörper 19 ist am Befestigungsort 25 an der Feder 11 befestigt, wobei der Befestigungsort 25 näher zum gehäuseseitigen Ende 20 liegt, als zum laugenbehälterseitigen Ende 24. Für die Untersetzung der Bewegung ist jedoch nicht die räumliche Anordnung allein ausschlaggebend, sondern das Verhältnis des kleineren Federweges zwischen Befestigungsort 25 und gehäuseseitigem Ende 20 zum größeren Federweg des Befestigungsortes 25 zum laugenbehälterseitigen Ende 24. Fig. 4 shows the detection device 7 for this embodiment. The housing-side end 20 of the retaining spring 11 is curved or arc-shaped, which rests on a curved support 21. This allows the spring of a pivoting movement of the tub ( Fig. 3 ) follow, without the helical spring itself is bent. Within the spring coils, the piston-shaped guide body 19 is arranged, which carries the magnet 9 on its end facing the housing-side support 21. The magnetic field sensor 8, which in this example is located on a printed circuit board 23, which in this example also carries an electronic circuit or a microprocessor circuit for converting or transforming the measuring signals, is fixed to the support 21 facing the spring or magnet 9. The guide body 19 is frictionally inserted in the retaining spring 11, so that natural oscillations of the spring 11 are attenuated or prevented in the region of the magnet 9, whereby unwanted false measurements are avoided. The guide body 19 is attached to the mounting location 25 on the spring 11, wherein the mounting location 25 is closer to the housing-side end 20, as to the tub side end 24. For the reduction of the movement is not the spatial arrangement alone decisive, but the ratio of the smaller spring travel between mounting location 25 and housing-side end 20 for larger travel of the mounting location 25 to the tub side end 24th

Claims (11)

Waschmaschine (1) mit einem Gehäuse (2), mit einem in dem Gehäuse (2) schwingbeweglich angeordneten Laugenbehälter (4) mit einer darin drehbar angeordneten Trommel (3) mit einer wenigstens annähernd horizontalen Drehachse (6), die mittels eines Motors (5) antreibbar ist und einer Erfassungseinrichtung (7) zur Erfassung der Position und/oder Lage des Laugenbehälters (4) in dem Gehäuse (2), die einen Magnetfeldsensor (8) mit einem korrespondierenden Magneten (9) umfasst, der dazu eingerichtet ist, die Flussdichte und die Richtung des vom Magneten (9) ausgehenden Magnetfeldes zu erfassen,
dadurch gekennzeichnet,
dass der Magnetfeldsensor (8) im wesentlichen fest dem Gehäuse (2) zugeordnet ist, wobei der mit dem Magnetfeldsensor (8) zusammenwirkende Magnet (9) in einem Haltemittel (14, 19) angebracht ist, das mittels zumindest einer Feder (11,11a, 13, 17) an dem Laugenbehälter (4) angekoppelt ist, wobei das Haltemittel (14, 19) dazu ausgebildet ist, eine Bewegung des Magneten (9) relativ zum Sensor (8) zuzulassen, wobei die Feder (11,11a, 13, 17) dazu eingerichtet ist, eine Bewegung und/oder Positionsänderung des Laugenbehälters (4) auf den Magneten (9) zu übertragen.A washing machine (1) having a housing (2) with a tub (4) arranged in a swinging motion in the housing (2) with a drum (3) rotatably disposed therein and having an at least approximately horizontal axis of rotation (6) ) and a detection device (7) for detecting the position and / or position of the tub (4) in the housing (2) comprising a magnetic field sensor (8) with a corresponding magnet (9), which is adapted to Detecting flux density and the direction of the magnetic field emanating from the magnet (9),
characterized,
in that the magnetic field sensor (8) is substantially fixedly assigned to the housing (2), the magnet (9) cooperating with the magnetic field sensor (8) being mounted in a holding means (14, 19) which is secured by means of at least one spring (11, 11a , 13, 17) is coupled to the tub (4), wherein the holding means (14, 19) is adapted to allow movement of the magnet (9) relative to the sensor (8), the spring (11, 11a, 13 , 17) is adapted to transmit a movement and / or position change of the tub (4) to the magnet (9). Waschmaschine (1) nach Anspruch 1,
dadurch gekennzeichnet,
dass das Haltemittel (14, 19) dazu eingerichtet ist, Abstandsänderungen zwischen Magneten (9) und Sensor (8) oder Kipp,- oder Drehbewegungen des Magneten (9) relativ zum Sensor (8) zuzulassen.Washing machine (1) according to claim 1,
characterized,
in that the holding means (14, 19) is set up to permit changes in distance between magnets (9) and sensor (8) or tilting or rotating movements of the magnet (9) relative to the sensor (8). Waschmaschine (1) nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass das Haltemittel (14, 19) im Zusammenwirken mit der Feder (11,11a, 13, 17) dazu eingerichtet ist, die Bewegung des Laugenbehälters (4) untersetzt auf den Magneten (9) zu übertragen.Washing machine (1) according to claim 1 or 2,
characterized,
in that the holding means (14, 19), in cooperation with the spring (11, 11a, 13, 17), is adapted to transmit the movement of the tub (4) under reduced pressure to the magnet (9). Waschmaschine (1) nach Anspruch 3,
dadurch gekennzeichnet,
dass der Sensor (8) an einer Kugel (15a) eines am Gehäuse (2) angebrachten Kugelgelenks (15) angeordnet ist, und dass das Haltemittel (14) eine Pfanne (15b) umfasst, die die Kugel (15a) zumindest teilweise umgreift, wobei der Magnet (9) im Haltemittel (14) beabstandet zum Sensor (8) angeordnet ist.Washing machine (1) according to claim 3,
characterized,
in that the sensor (8) is arranged on a ball (15a) of a ball joint (15) attached to the housing (2), and in that the retaining means (14) comprises a pan (15b) which at least partially surrounds the ball (15a), wherein the magnet (9) in the holding means (14) spaced from the sensor (8) is arranged. Waschmaschine (1) nach Anspruch 4,
dadurch gekennzeichnet,
dass der Magnet (9) innerhalb des Halteteils (14) beweglich geführt ist, und mittels einer weiteren Feder (17) die mit der Feder (13) für die Kopplung zum Laugenbehälter (4) verbunden ist, gekoppelt ist.Washing machine (1) according to claim 4,
characterized,
in that the magnet (9) is movably guided inside the holding part (14) and is coupled by means of a further spring (17) which is connected to the spring (13) for the coupling to the tub (4). Waschmaschine (1) nach Anspruch 3,
dadurch gekennzeichnet,
dass das laugenbehälterseitige Ende der Feder (13) in betriebsgemäßer Aufstellposition der Waschmaschine (1) am vorderen, oberen Bereich (18) des Laugenbehälters (4) angekoppelt ist.Washing machine (1) according to claim 3,
characterized,
that the liquor tank side end of the spring (13) in operative set-up position according to the washing machine (1) at the front, upper portion (18) of the tub (4) is coupled. Waschmaschine (1) nach Anspruch 3,
dadurch gekennzeichnet,
dass der Laugenbehälter (4) innerhalb des Gehäuses (2) oberseitig mittels Haltefedern (11, 11a) schwingbeweglich aufgehängt ist und dass das Haltemittel (19) an oder in der Feder (11, 11a) derart angebracht ist, dass eine Untersetzung der Bewegung des Laugenbehälters (4) zum Magneten (9) bereitgestellt wird.Washing machine (1) according to claim 3,
characterized,
that the tub (4) within the housing (2) on the upper side by means of retaining springs (11, 11a) is suspended swinging and that the holding means (19) on or in the spring (11, 11a) is mounted such that a reduction of the movement of the Lye container (4) to the magnet (9) is provided. Waschmaschine (1) nach Anspruch 7,
dadurch gekennzeichnet,
dass das Haltemittel als kolbenförmiger Führungskörper (19) ausgeführt ist, der im Inneren der Zugfeder (11) angeordnet ist, wobei der Führungskörper (19) in einem Bereich (25) mit der Feder (11) gekoppelt ist, der näher zum gehäuseseitigen Ende (20) als zum laugenbehälterseitigen Ende (24) der Zugfeder (11) liegt.Washing machine (1) according to claim 7,
characterized,
in that the holding means is designed as a piston-shaped guide body (19) which is arranged inside the tension spring (11), wherein the guide body (19) is coupled in a region (25) to the spring (11) which is closer to the housing-side end (11). 20) as the tub side end (24) of the tension spring (11). Waschmaschine (1) nach Anspruch 7 oder 8,
dadurch gekennzeichnet,
dass die Haltefeder (11) gehäuseseitig ein gekrümmtes Ende (20) aufweist, das auf einer gekrümmten Auflage (21) aufliegt, zur Bereitstellung von Bewegungen in verschiedenen Dreh- und Pendelrichtungen (x, y, z) an der Auflage (21), wobei der Sensor (8) in Richtung des Magneten (9) weisend angebracht ist.Washing machine (1) according to claim 7 or 8,
characterized,
that the retaining spring (11) on the housing side has a curved end (20) which rests on a curved support (21), for providing movements in different directions of rotation and pendulum (x, y, z) on the support (21) the sensor (8) is mounted pointing in the direction of the magnet (9). Waschmaschine (1) nach Anspruch 8,
dadurch gekennzeichnet,
dass der Führungskörper (19) zumindest bereichweise mit der Feder (11) reibwirkend zur Dämpfung von Eigenschwingungen der Feder (11) ausgebildet ist.Washing machine (1) according to claim 8,
characterized,
in that the guide body (19) is formed at least in sections with the spring (11) in a frictionally acting manner for damping natural oscillations of the spring (11). Waschmaschine (1) nach einem der Ansprüche 1 bis 10,
dadurch gekennzeichnet,
dass die Erfassungseinrichtung (7) zumindest einen weiteren Magnetfeldsensor (8a) mit einem weiteren mit diesem Sensor (8a) in Wirkverbindung stehenden Magneten (9a) aufweist, wobei der weitere Magnet (9a) beabstandet zu der Ankopplung des ersten Magneten (9) an den Laugenbehälter (4) angekoppelt ist.Washing machine (1) according to one of claims 1 to 10,
characterized,
that the detection device (7) at least one further magnetic field sensor (8a) is in operative connection with a further with this sensor (8a), magnet (9a), wherein the further magnet (9a) spaced apart from the coupling of the first magnet (9) at the Lye container (4) is coupled.
EP09006569.9A 2009-05-15 2009-05-15 Washing machine with a tub and a registration device Not-in-force EP2251476B1 (en)

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