EP0604261B1 - Device for stopping the drum in a position and for quickly unlocking the access door of a machine with a horizontal drum - Google Patents

Device for stopping the drum in a position and for quickly unlocking the access door of a machine with a horizontal drum Download PDF

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Publication number
EP0604261B1
EP0604261B1 EP93402957A EP93402957A EP0604261B1 EP 0604261 B1 EP0604261 B1 EP 0604261B1 EP 93402957 A EP93402957 A EP 93402957A EP 93402957 A EP93402957 A EP 93402957A EP 0604261 B1 EP0604261 B1 EP 0604261B1
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EP
European Patent Office
Prior art keywords
drum
hook
machine
wedge
stopping
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
EP93402957A
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German (de)
French (fr)
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EP0604261A1 (en
Inventor
Patrick D'ambrosio
Marc-Antoine Rabin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Industrielle dAppareils Menagers SA CIAPEM
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Compagnie Industrielle dAppareils Menagers SA CIAPEM
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Publication of EP0604261A1 publication Critical patent/EP0604261A1/en
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Publication of EP0604261B1 publication Critical patent/EP0604261B1/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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/302—Automatic drum positioning

Definitions

  • the invention relates to a device for stopping in position and for rapidly unlocking the access door of a horizontal drum machine.
  • the present invention also relates to a washing machine and / or drying machine provided with such a device.
  • a washing machine and / or dryer usually comprises a perforated drum containing the laundry and rotating inside a tank intended to retain the washing or rinsing water.
  • the drum is usually driven by a motor placed below the tank, the movement transmission being carried out by means of a belt and two pulleys fixed respectively on the motor shaft and the axis of the drum to the outside of the tank.
  • the access door of the bodywork gives onto the watertight door of the tank which in turn gives onto the drum, the latter itself being provided with an access hatch .
  • EP-A-0 408 120 presents a device for stopping a washing machine drum.
  • the drum can rotate at very high speeds, which can exceed 800 revolutions / minute.
  • the locking device can operate either during the entire washing cycle, or only during the high speed phases. In the latter case, the locking device is connected to the electromechanical programmer or to the electronic device if necessary.
  • the lock of the locking device is often of the thermal type, due to the low price of such a mechanism. This is for example a bimetal or wax lock.
  • This is for example a bimetal or wax lock.
  • the present invention aims to reduce the drawbacks mentioned above.
  • One of the objects of the invention is to propose a device, mechanically simple and requiring few parts, for stopping in position of a horizontal drum machine making it possible not only to align the drum door and the gate of the tank when the machine stops, whether it is an end of washing stop or a stop controlled by the user, but also allowing rapid unlocking of the access door of the machine body during this stop, while guaranteeing the safety of said user.
  • the stopping device in position can be implemented without being used with rapid unlocking. The combination of the two functions, stop in position and quick unlocking, however, allows a significant reduction in cost price.
  • the drum can be stopped in position with or without rapid unlocking of the access door to the bodywork at any time during the operation of the appliance, in particular during the spinning phases.
  • Another advantage of the invention is that it makes it possible to bring the drum into the desired position smoothly, thus limiting the stresses on the parts.
  • the subject of the invention is therefore a device for stopping in position a horizontal drum machine as set out in claim 1.
  • the locking means is connected to the bolt of the automatic lock of the door of the bodywork so that the latter unlocks the door when the locking means enters the locking position.
  • Figure 1 shows a washing machine and / or dryer laundry with a body 1, access to the interior of the machine is through an access door 2.
  • This access door is provided on top of the machine in the case of a machine with access from above such as that shown.
  • a pulley 3 fixed on the motor shaft 4 transmits, by means of a belt 5, the rotation of said motor 4 to the drive pulley 6 of the drum 7 with a horizontal axis.
  • the machine further comprises a tank 8 provided with an access door 9. Inside the tank 8 rotates a drum 7, also provided with an access door 12. Said drum 7 is driven in rotation by the pulley 6, the latter being fixed in a known manner on the axis of the drum 7 outside the tank 8.
  • the flange 10 seals between the access door 9 of the tank 8 and the tank it -even.
  • a control panel 11 allows the user to operate the machine.
  • the machine also includes a manual unlocking button 13 of the access door 2 of the bodywork.
  • this button 13 is located on the front face of the body, but it can be placed on the control panel 11.
  • An automatic safety lock the bolt of which engages in the finger 15 fixed to the door access 2, is also provided and will be described in more detail later.
  • Compression spring 14 raises the access door 2 when the latter is not retained by any lock.
  • FIG. 2 represents certain connections of the digital module 16 for controlling the operation of the washing and / or drying machine.
  • One of the roles of said digital module 16 is, among other things, to control the speed and the direction of rotation of the motor 4.
  • the module 16 receives in return the data coming from the tachometer 17, thus allowing regulation of said speed.
  • a safety microswitch 18 cuts off the general power supply to the machine when the access door 2 of the bodywork opens.
  • the washing and / or drying machine comprises a device for stopping in position and for rapidly unlocking the access door, the stopping device comprising a shoe which by jamming blocks the drum in a given position.
  • the stopping device comprising a shoe which by jamming blocks the drum in a given position.
  • a support plate 21 of the device for stopping in position and for rapid unlocking is fixed in a known manner to the tank 8 or to any element that is fixed relative to the axis of the tank 8.
  • the device itself comprises a pad 22 by example in the form of a wedge supporting a hook 23 so that a lug 24, the position of which is described later, comes to engage in the hook thus causing the wedge 22 with its guide rod 25 so that said wedge 22 for example, get stuck between the pulley 6 and the belt 5 when the motor 4 rotates in the preferred direction and that the wedge 22 has been previously put in the approach position.
  • the wedge 22 has for example a substantially beveled shape. It is flat on the side coming to rest against the belt 5 so as to have a large contact surface and adapts to the radius of curvature of the pulley 6 on the opposite side. This does not in any way prejudge the surface condition of the wedge, which may include means which increase the friction for example between itself and the belt 5 or the pulley 6.
  • the wedge 22 can in particular have a rough surface or even adapt to the sculptures of the belt 5 if necessary.
  • the shim 22 can be made of a flexible material, thus making it possible to reduce the stresses exerted on the belt 5 and the shim 22.
  • the hook 23 is either an insert and fixed in a known manner on the wedge 22, or is integral with it.
  • the wedge 22 and its hook 23 are supported by a guide rod 25 which is inserted into the coil 26 fixed on the support plate 21.
  • the guide rod 25 comprises a magnetic core 27 allowing translation in the direction of the axis of the rod 25 when the coil 26 is supplied via the connections 28 and 29 connected to the digital module 16.
  • the guide rod 25 further comprises a stop 30 intended to hold said rod 25 so that the magnetic core 27 is in a good position relative to the coil 26 when the device is in the rest position.
  • a return spring 31 brings the guide rod 25 and therefore the shim 22 into the rest position when the washing machine is restarted after a stop in position has been made .
  • the guide and translation means are dissociated: rails or a guide rod are then provided, the latter being distinct from the element carrying the magnetic core 27, this element of course also being able to be a rod .
  • the machine comprises a manual unlocking button 13 of the access door 2 of the bodywork.
  • the button 13 has a hook 32 which engages on a stop 33 of the door 2 of the bodywork.
  • the manual unlocking button 13 actuates a microswitch 19 connected to the digital module 16.
  • the change of state of the microswitch 19 causes the digital module 16 to command the stopping the machine in position as described later.
  • an impulse given to the button 13 is sufficient to command the stop in position.
  • the corresponding pulse can also be given via a stop button, not shown, on the control panel, the interface between the stop button and the digital module being done in the same way as for the manual locking button 13, by associating the button stop at a microswitch connected to the digital module 16.
  • Said stop button on the dashboard can also have the function of manually unlocking the access door of the bodywork.
  • the access door 2 of the body can also be locked automatically by means of an automatic lock, the bolt 34 of which is inserted into an opening 35 of the finger 15 of the door 2 of the body.
  • the automatic lock can be actuated either by a thermal element, or, according to a particular embodiment of the invention, by the stop device in position.
  • the bolt 34 is connected to the guide rod 25 by means of a flexible cable 36 sliding in a sheath 37.
  • the cable 36 can slide in an opening made in a support 38 fixed to the guide rod 25.
  • a stop 39 fixed to the end of the cable adjusts the height of the guide rod 25 from which said rod pulls on the cable 36.
  • This height is advantageously adjusted so that the guide rod 25 only pulls the cable 36 as soon as the lug 24 pulls on the rod-wedge-hook assembly 25-22-23.
  • the stroke of the cable 36 is also advantageously calculated so that the bolt 34 is disengaged from the opening 35 at the latest when the wedge 22 is in its locked position.
  • FIGS. 1 and 3 to 5 show the device in this configuration.
  • the access door 2 of the bodywork is then kept closed by the manual lock 13 and the bolt 34, and the wedge 22 and its hook 23 are in a position such that they do not hinder the rotation of the pulley 6.
  • the direction and the speed of rotation of the drum 7 can be arbitrary. We define a preferential direction of rotation of the drum 7 and an opposite direction, the preferential direction being the anti-clockwise direction with respect to FIGS. 1 and 3 to 5 (direction S1).
  • a stop in position is controlled under two circumstances: either when the user sends a corresponding pulse by pressing the manual unlocking button 13 or a stop button on the control panel 11, or when the washing of the laundry is finished. In the latter case, the necessary command can for example be given via a contact of the electromechanical programmer.
  • the digital module 16 controls the unpositioned stop of the machine. This can be achieved by cutting off the power to the motor 4.
  • the digital module 16 controls a rotation of the motor 4 at low speed, corresponding for example to a rotation of the drum at 30 revolutions per minute, in the preferential direction S1.
  • the digital module 16 controls the tensioning of the coil 26.
  • the translation of the core 27 and therefore of the guide rod 25 pushes the wedge 22 and its hook 23 into the so-called approach position, this position being such that the lug 24 integral with the pulley 6 engages in the hook 23, causing the latter in its movement.
  • the operating means of the locking means therefore comprises, in the present embodiment, the coil 26, the core 27 and the guide rod 25.
  • the so-called approach position is shown in FIG. 4.
  • the wedge 22 then comes gradually get stuck between the pulley 6 and the belt 5, the speed and inertia of the drum 7 and the pulley 6 being such that the engagement of the shim 22 is sufficient to on the one hand block the pulley 6 and therefore the drum 7 rotating in the preferential direction S1, and on the other hand to prevent rotation of the drum 7 in the opposite direction because of a possible unbalance of linen, once the power to the motor 4 is cut.
  • the position of the pin 24 on the pulley 6 is such that when the latter and the belt 5 are blocked, the hatch access 12 of the drum 7 is opposite the door 9 of the tank.
  • the lug 24 is advantageously placed on one of the faces of the pulley 6.
  • the rod 25 pulls on the cable 36 via the support 38, integral with the guide rod 25, which comes to be placed against the stop 39.
  • the bolt 34 then releases the finger 15.
  • the compression spring 14 pushes back the access door 2 from the body, allowing the user to access the interior of the machine.
  • the safety microswitch 18 cuts off the general supply of the machine, and more particularly that of the motor 4.
  • the hook 32 of the manual unlocking button 13 must be released from the stop 33 so that the access door 2 of the bodywork opens. This is not a problem when the button 13 is a bistable button, because in this case, the hook 32 remains released from the stop 33 even if the user releases the button.
  • a monostable push button i.e. a button which returns to its initial position as soon as it is released
  • the user must hold it pressed down until stop in position of the drum so that the access door 2 of the bodywork opens.
  • means for detecting the position of the drum Said means is connected to the digital module 16, which processes the information which emanates therefrom.
  • the stop blocking cycle in position is restarted, possibly preceded an imbalance elimination phase, the latter not being in itself part of the present invention.
  • the access door 2 can then be unlocked by manual means whose implementation is obvious to humans of career. The motor power is also cut in this case.
  • the means for detecting the position of the drum may, for example, comprise a reflective label placed on the pulley 6 and a light-emitting diode and a sensor placed opposite the pulley.
  • Other means can obviously be used, such as Reed or Hall effect sensors associated with a permanent magnet judiciously placed on the pulley 6.
  • the latter comprises a device for cutting the current, not shown, other than that controlled by the safety microswitch 18, characterized in that it cuts the supply to the motor 4 and to the coil 26 when an untimely rise in current in the rotor or stator of motor 4 is detected while the speed of rotation of said motor is zero.
  • This additional safety device may be necessary in the case where the bolt 34 remains blocked in the opening 35 while the rotation of the drum 7 is blocked but the motor 4 is still supplied, the safety microswitch 19 only being triggered when the opening of the access door 2 of the bodywork. This will prevent damage to the shim 22 or the belt 5.
  • the production of such a safety device is within the reach of the skilled person.
  • the digital module can also be used to detect a rotor blockage. If, for example, a rotation of the motor has been controlled by said module 16, it will suffice to verify the correct execution of this command by monitoring the tachometer. Such monitoring can easily be programmed. If you want to know if the motor is blocked when no rotation command has been launched, it will suffice to perform this command beforehand.
  • the machine will be turned on again once the safety microswitch 19 is closed, that is to say once the access door 2 of the bodywork is closed.
  • the machine is constructed so that when restarting, the drum 7 first turns in the opposite direction to the preferred direction S1.
  • the digital module 16 is programmed accordingly. This has the effect of unlocking the wedge 22, of disengaging the lug 24 of the hook 23, thus allowing the wedge 22 and the hook 23 to return to their rest position, either by simple gravity, or by means of springs of compression 31 and / or 40.
  • means are provided for increasing the acute angle between the hook 23 and the wedge 22 when the locking means is brought into the approach position, so as to facilitate the hooking of the hook 23 by the lug 24 at this time, while avoiding accidental snagging at other times.
  • a shock absorber is provided on the one hand to absorb the mechanical shocks undergone during an approaching position, on the other hand to fold the hook 23 when the device returns to its rest position.
  • the hook 23 When the device is at rest, the hook 23 is folded against the wedge 22. According to this embodiment, the hook 23 is bent and is provided at the elbow with an axis coming to be housed in a corresponding location, not shown, of the wedge 22, so that the hook 23 can pivot around its axis while being blocked in translation parallel to this axis.
  • the hook 23 has an arm beyond its elbow, the side of which forms an acute angle with the other arm is pressed against one end of a damper. This damper is such that the damping is done by compression over its length when the hook 23 pivots about its axis in the clockwise direction.
  • the damper can for example be a spring or a part made of a compressible elastic material.
  • the side of the arm opposite the side coming to bear against the shock absorber is rounded, so that a stop rotates the hook 23 while sliding along this rounded side when the wedge 22 is translated to its position d 'approach.
  • the stop is fixed relative to the tank 8.
  • the shock absorber In the rest position, the shock absorber has maximum elongation.
  • the acute angle between the arm of the hook 23 where the lug 24 will hang and the side of the wedge 22 coming to press against the pulley 1 then has its minimum opening.
  • the opening of the angle widens, the stop pressing on the rounded side of the arm, while the shock absorber begins to compress.
  • the hook 23 waits for the lug 24 to arrive. The shock due to contact between the hook 23 and the lug 24 is at least partially absorbed by the shock absorber. Everything then happens as in the first example of embodiment.
  • means are provided to improve the maintenance of the device, and therefore of the drum, in the locked position.
  • These holding improvement means comprise a retractable element 47, 48 exerting, on a strip 46 integral with the rod-wedge assembly 25, 22 and comprising at least one recess, a force such that, when the device is in the position of blocking and that the head 48 of the retractable element is positioned in a hollow in the lamella 46, the device is held in position despite a possible unbalance of linen inside the drum 7.
  • Figures 6, 7 and 8 show a part of the device according to the invention accompanied by said means for improving maintenance when said device is respectively in the rest or blocking position.
  • a strip 46 is provided in S-shape whose vertical axis is parallel to the translation axis of the wedge 22 and its guide rod 25.
  • the lamella 46 is integral with the wedge-rod assembly and may for example consist of an extension of the support 38, as shown in FIGS. 6 and 7.
  • the strip 46 moves at the same time as the guide rod 25, it comes to rub against a locking rod 47, the axis of which is advantageously perpendicular to the axis of translation of said rod 47.
  • the latter is provided with a head 48 at the rounded end and with a ring 49 on which a spring 50 bears.
  • the assembly is held between two stops 51 and 52, fixed on the support plate 21 , as illustrated in FIG. 8, so as to allow the rod 47 to translate between two positions, one being reached when the ring is in abutment against the stop 52, the other being reached when the spring 50 is compressed.
  • the first position is the rest position.
  • the strip 46 comes into contact with the head 48, which retracts under the effect of the force exerted.
  • the head 48 then follows the curves of the strip 46.
  • the length of this strip 46 is calculated so that the head 48 comes to be placed in the hollow formed by the lower loop of the S at the very moment when the wedge 22 is in blocking position.
  • the stiffness of the spring 50 is calculated so as to effectively oppose any fallout of the wedge due to an exceptionally large unbalance of laundry while allowing the head 48 to be unlocked under the effect of the engine torque during the refitting. running of the assembly after a stop in position has taken place.
  • the head 48 is stationary while the strip 46 is flexible.
  • the operating means which places the wedge 22 in the approach position does not perform a translation, but a rotation or the combination of a rotation and a translation.
  • the stop device in position is used without the rapid unlocking of the access door.
  • the hooking means integral with the drum 7 or with a part of the drum drive device, such as the pulley 6, is a hook.
  • the device for stopping in position and for rapidly unlocking the access door is used with a horizontal drum device without a sealed tank.
  • the belt is placed directly on the drum.
  • the attachment means is then advantageously fixed to the cylindrical part of the drum.

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

Description

L'invention est relative à un dispositif d'arrêt en position et de déverrouillage rapide de la porte d'accès d'une machine à tambour horizontal. La présente invention concerne aussi une machine à laver et/ou à sécher le linge munie d'un tel dispositif.The invention relates to a device for stopping in position and for rapidly unlocking the access door of a horizontal drum machine. The present invention also relates to a washing machine and / or drying machine provided with such a device.

Un lave-linge et/ou séche-linge comprend habituellement un tambour perforé contenant le linge et tournant à l'intérieur d'une cuve destinée à retenir l'eau de lavage ou de rinçage.A washing machine and / or dryer usually comprises a perforated drum containing the laundry and rotating inside a tank intended to retain the washing or rinsing water.

Le tambour est habituellement entraîné par un moteur placé au dessous de la cuve, la transmission de mouvement étant réalisée par l'intermédiaire d'une courroie et de deux poulies fixées respectivement sur l'arbre du moteur et l'axe du tambour à l'extérieur de la cuve.The drum is usually driven by a motor placed below the tank, the movement transmission being carried out by means of a belt and two pulleys fixed respectively on the motor shaft and the axis of the drum to the outside of the tank.

Dans les machines à laver à accès par le dessus, la porte d'accès de la carrosserie donne sur le portillon étanche de la cuve qui quant à lui donne sur le tambour, ce dernier étant lui-même muni d'une trappe d'accès.In washing machines with access from above, the access door of the bodywork gives onto the watertight door of the tank which in turn gives onto the drum, the latter itself being provided with an access hatch .

Une demande de brevet européen EP-A- 0 408 120 présente un dispositif d'arrêt d'un tambour de lave-linge.A European patent application EP-A-0 408 120 presents a device for stopping a washing machine drum.

Lors de certaines phases de fonctionnement de la machine, le tambour peut tourner à de très grandes vitesses, pouvant dépasser les 800 tours/minute. Pour des raisons évidentes de sécurité, il est prévu un dispositif de verrouillage automatique de la porte d'accès de la carrosserie. L'utilisateur n'a alors pas accès à l'intérieur de la machine tant qu'un danger persiste. Le dispositif de verrouillage peut fonctionner soit pendant toute la durée du cycle de lavage, soit uniquement pendant les phases à grande vitesse. Dans ce dernier cas, le dispositif de verrouillage est relié au programmateur électromécanique ou au dispositif électronique s'il y a lieu.During certain machine operating phases, the drum can rotate at very high speeds, which can exceed 800 revolutions / minute. For obvious security reasons, there is an automatic locking device for the body access door. The user then does not have access to the interior of the machine as long as a danger persists. The locking device can operate either during the entire washing cycle, or only during the high speed phases. In the latter case, the locking device is connected to the electromechanical programmer or to the electronic device if necessary.

Le verrou du dispositif de verrouillage est souvent de type thermique, en raison du faible prix d'un tel mécanisme. Il s'agit par exemple d'un verrou à bilame ou à cire. Lorsque l'élément thermique est mis sous tension, sa dilatation provoque le déplacement du pêne du verrou, qui viendra bloquer l'ouverture de la porte d'accès de la carrosserie.The lock of the locking device is often of the thermal type, due to the low price of such a mechanism. This is for example a bimetal or wax lock. When the thermal element is energized, its expansion causes the bolt bolt to move, which will block the opening of the access door to the bodywork.

L'inconvénient de ce type de verrou est sa grande inertie. En effet, un temps appréciable est nécessaire pour le chauffage de l'élément thermique et encore plus pour son refroidissement. Ce temps de refroidissement peut aller de 90 à 120 secondes suivant notamment la nature de l'élément thermique et la température à l'intérieur de la carrosserie. Durant ce laps de temps, l'accès à l'intérieur de la machine n'est pas possible.The disadvantage of this type of lock is its great inertia. Indeed, an appreciable time is necessary for the heating of the element thermal and even more for its cooling. This cooling time can range from 90 to 120 seconds depending in particular on the nature of the thermal element and the temperature inside the body. Access to the interior of the machine is not possible during this time.

Ceci peut constituer une gêne pour l'utilisateur, qu'il veuille rajouter du linge pendant le cycle de lavage ou simplement le retirer immédiatement à la fin du cycle.This can be inconvenient for the user, whether he wants to add laundry during the washing cycle or simply remove it immediately at the end of the cycle.

D'autre part, lors de l'accès au tambour, la trappe de celui-ci ne se trouve que rarement en face de l'ouverture du portillon de la cuve. L'utilisation est alors obligé de tourner le tambour à la main pour accéder à cette trappe. Cette opération peut être pénible en raison du balourd important crée par le linge mouillé ou encore à cause de la lessive pouvant rendre la surface du tambour extrêmement glissante lorsque la machine est ouverte en plein cycle. De plus, il existe un risque de blessures étant donné l'état de surface rugueux dû au perforations du tambour.On the other hand, when accessing the drum, the latter's door is rarely found opposite the opening of the door of the tank. The use is then obliged to turn the drum by hand to access this hatch. This operation can be tedious because of the significant imbalance created by wet laundry or because of the detergent which can make the surface of the drum extremely slippery when the machine is open in full cycle. In addition, there is a risk of injury due to the rough surface due to perforation of the drum.

Actuellement, divers dispositifs sont employés pour positionner le tambour, mais ces dispositifs ne donnent pas satisfaction, car ils sont mécaniquement complexes et donc coûteux et peu fiables. De plus, certains, s'ils positionnent le tambour, ne le bloquent pas en rotation après positionnement, le laissant à la merci d'un balourd de linge pouvant le faire pivoter vers une position non désirée. D'autres encore n'effectuent un positionnement qu'en fin de lavage, ce qui oblige l'utilisateur à tourner manuellement le tambour s'il désire y accéder pendant le cycle de lavage.Currently, various devices are used to position the drum, but these devices are not satisfactory, because they are mechanically complex and therefore expensive and unreliable. In addition, some, if they position the drum, do not block it in rotation after positioning, leaving it at the mercy of an unbalance of laundry that can rotate it to an unwanted position. Still others perform positioning only at the end of washing, which obliges the user to manually turn the drum if he wishes to access it during the washing cycle.

La présente invention vise à réduire les inconvénients cités ci-dessus. Un des buts de l'invention est de proposer un dispositif, mécaniquement simple et nécessitant peu de pièces, d'arrêt en position d'une machine à tambour horizontal permettant non seulement d'effectuer l'alignement de la trappe du tambour et du portillon de la cuve lors de l'arrêt de la machine, qu'il s'agisse d'un arrêt de fin de lavage ou d'un arrêt commandé par l'utilisateur, mais permettant également de déverrouiller rapidement la porte d'accès de la carrosserie de la machine lors de cet arrêt, tout en garantissant la sécurité dudit utilisateur. Il est à noter que le dispositif d'arrêt en position peut être mis en oeuvre sans être utilisé avec un déverrouillage rapide. La combinaison des deux fonctions, arrêt en position et déverrouillage rapide, permet cependant une réduction appréciable du prix de revient.The present invention aims to reduce the drawbacks mentioned above. One of the objects of the invention is to propose a device, mechanically simple and requiring few parts, for stopping in position of a horizontal drum machine making it possible not only to align the drum door and the gate of the tank when the machine stops, whether it is an end of washing stop or a stop controlled by the user, but also allowing rapid unlocking of the access door of the machine body during this stop, while guaranteeing the safety of said user. It should be noted that the stopping device in position can be implemented without being used with rapid unlocking. The combination of the two functions, stop in position and quick unlocking, however, allows a significant reduction in cost price.

L'arrêt en position du tambour avec ou sans déverrouillage rapide de la porte d'accès de la carrosserie peut être réalisé à n'importe quel moment pendant le fonctionnement de l'appareil, notamment pendant les phases d'essorage.The drum can be stopped in position with or without rapid unlocking of the access door to the bodywork at any time during the operation of the appliance, in particular during the spinning phases.

Un autre avantage de l'invention est qu'elle permet d'amener le tambour dans la position désirée sans à coups, limitant ainsi les contraintes sur les pièces.Another advantage of the invention is that it makes it possible to bring the drum into the desired position smoothly, thus limiting the stresses on the parts.

L'invention a donc pour objet un dispositif d'arrêt en position d'une machine à tambour horizontal tel qu'exposé par la revendication 1.The subject of the invention is therefore a device for stopping in position a horizontal drum machine as set out in claim 1.

Selon un mode de réalisation particulier de l'invention, le moyen de blocage est relié au pêne du verrou automatique de la porte de la carrosserie de façon à ce que ce dernier déverrouille la porte lorsque le moyen de blocage entre en position de blocage.According to a particular embodiment of the invention, the locking means is connected to the bolt of the automatic lock of the door of the bodywork so that the latter unlocks the door when the locking means enters the locking position.

La présente invention sera mieux comprise et d'autres avantages apparaîtront à la lecture de la description détaillée d'un mode de réalisation particulier du dispositif, pris à titre d'exemple non limitatif et illustré par les dessins annexés, dans lesquels:

  • la figure 1 représente une vue schématique générale, en coupe transversale par rapport à l'axe du tambour, d'une machine à laver et /ou à sécher le linge comportant un exemple de réalisation du dispositif conforme à l'invention ;
  • la figure 2 représente schématiquement les connexions du module numérique de commande de la machine avec les microcontacts et la commande du moyen de manoeuvre du moyen de blocage ;
  • la figure 3 représente schématiquement un exemple de réalisation du dispositif d'arrêt en position et de déverrouillage dans sa position de repos ;
  • la figure 4 représente schématiquement le même exemple de réalisation du dispositif conforme à l'invention dans une position dite d'approche décrite ultérieurement ;
  • la figure 5 représente schématiquement l'exemple de réalisation du dispositif conforme à l'invention lorsque l'arrêt en position et le déverrouillage ont été réalisés;
  • la figure 6 représente un moyen d'amélioration du maintien du dispositif en position de blocage selon un mode de réalisation supplémentaire de l'invention, quand le dispositif est au repos ;
  • la figure 7 représente ce même moyen lorsque le dispositif est en position de blocage;
  • la figure 8 représente une partie de ce moyen avec plus de détails.
The present invention will be better understood and other advantages will appear on reading the detailed description of a particular embodiment of the device, taken by way of nonlimiting example and illustrated by the appended drawings, in which:
  • FIG. 1 represents a general schematic view, in transverse section with respect to the axis of the drum, of a washing machine and / or of drying the laundry, comprising an embodiment of the device according to the invention;
  • FIG. 2 schematically represents the connections of the digital control module of the machine with the microswitches and the control of the operating means of the locking means;
  • FIG. 3 schematically represents an exemplary embodiment of the device for stopping in position and for unlocking in its rest position;
  • FIG. 4 schematically represents the same embodiment of the device according to the invention in a so-called approach position described later;
  • FIG. 5 schematically represents the exemplary embodiment of the device according to the invention when the stopping in position and the unlocking have been carried out;
  • FIG. 6 represents a means of improving the maintenance of the device in the blocking position according to an additional embodiment of the invention, when the device is at rest;
  • Figure 7 shows the same means when the device is in the locked position;
  • Figure 8 shows part of this means in more detail.

Pour simplifier l'exposé de l'invention, seule l'application à une machine à laver et/ou à sécher est décrite ci-après. Il est à la portée de l'homme du métier, se servant de ses capacités ordinaires, d'adapter le dispositif conforme à l'invention à toute machine à tambour horizontal.To simplify the presentation of the invention, only the application to a washing and / or drying machine is described below. It is within the reach of those skilled in the art, using their ordinary capacities, to adapt the device according to the invention to any horizontal drum machine.

La figure 1 représente une machine à laver et/ou à sécher le linge possédant une carrosserie 1, l'accès à l'intérieur de la machine se faisant par une porte d'accès 2. Cette porte d'accès est prévue sur le dessus de la machine dans les cas d'une machine à accès par le dessus telle que celle représentée. Une poulie 3 fixée sur l'arbre du moteur 4 transmet, par l'intermédiaire d'une courroie 5 la rotation dudit moteur 4 à la poulie d'entraînement 6 du tambour 7 à axe horizontal.Figure 1 shows a washing machine and / or dryer laundry with a body 1, access to the interior of the machine is through an access door 2. This access door is provided on top of the machine in the case of a machine with access from above such as that shown. A pulley 3 fixed on the motor shaft 4 transmits, by means of a belt 5, the rotation of said motor 4 to the drive pulley 6 of the drum 7 with a horizontal axis.

La machine comprend en outre une cuve 8 munie d'un portillon d'accès 9. A L'intérieur de la cuve 8 tourne un tambour 7, muni lui aussi d'une trappe d'accès 12. Ledit tambour 7 est entraîné en rotation par la poulie 6, cette dernière étant fixée de manière connue sur l'axe du tambour 7 à l'extérieur de la cuve 8. La collerette 10 assure l'étanchéité entre le portillon d'accès 9 de la cuve 8 et la cuve elle-même.The machine further comprises a tank 8 provided with an access door 9. Inside the tank 8 rotates a drum 7, also provided with an access door 12. Said drum 7 is driven in rotation by the pulley 6, the latter being fixed in a known manner on the axis of the drum 7 outside the tank 8. The flange 10 seals between the access door 9 of the tank 8 and the tank it -even.

Un panneau de commande 11 permet à l'utilisateur de faire fonctionner la machine.A control panel 11 allows the user to operate the machine.

La machine comporte également un bouton de déverrouillage manuel 13 de la porte d'accès 2 de la carrosserie. Sur la figure 1, ce bouton 13 est situé sur la face avant de la carrosserie, mais il peut être placé sur le panneau de commande 11. Un verrou de sécurité automatique, dont le pêne s'engage dans le doigt 15 fixé à la porte d'accès 2, est également prévu et sera décrit plus en détail ultérieurement. Un ressort de compression 14 soulève la porte d'accès 2 lorsque cette dernière n'est retenue par aucun verrou.The machine also includes a manual unlocking button 13 of the access door 2 of the bodywork. In FIG. 1, this button 13 is located on the front face of the body, but it can be placed on the control panel 11. An automatic safety lock, the bolt of which engages in the finger 15 fixed to the door access 2, is also provided and will be described in more detail later. Compression spring 14 raises the access door 2 when the latter is not retained by any lock.

La figure 2 représente certaines connexions du module numérique 16 de commande du fonctionnement de la machine à laver et/ou à sécher. L'un des rôles dudit module numérique 16 est, entre autres, de commander la vitesse et le sens de rotation du moteur 4. Le module 16 reçoit en retour les données issues du tachymètre 17, permettant ainsi une régulation de ladite vitesse.FIG. 2 represents certain connections of the digital module 16 for controlling the operation of the washing and / or drying machine. One of the roles of said digital module 16 is, among other things, to control the speed and the direction of rotation of the motor 4. The module 16 receives in return the data coming from the tachometer 17, thus allowing regulation of said speed.

Un microcontact de sécurité 18 coupe l'alimentation générale de la machine lorsque la porte d'accès 2 de la carrosserie s'ouvre.A safety microswitch 18 cuts off the general power supply to the machine when the access door 2 of the bodywork opens.

Selon l'invention, la machine à laver et/ou à sécher comprend un dispositif d'arrêt en position et de déverrouillage rapide de la porte d'accès, le dispositif d'arrêt comprenant un patin qui par coincement vient bloquer le tambour dans une position donnée. La position dudit dispositif par rapport à l'ensemble de la machine est représentée, à titre d'exemple, schématiquement à la figure 1. Les figures 3 à 5 représentent ce même dispositif de façon plus détaillée.According to the invention, the washing and / or drying machine comprises a device for stopping in position and for rapidly unlocking the access door, the stopping device comprising a shoe which by jamming blocks the drum in a given position. The position of said device with respect to the whole machine is shown, by way of example, diagrammatically in FIG. 1. FIGS. 3 to 5 show this same device in more detail.

Une platine support 21 du dispositif d'arrêt en position et de déverrouillage rapide est fixée de manière connue sur la cuve 8 ou sur tout élément fixe par rapport à l'axe de la cuve 8. Le dispositif lui-même comporte un patin 22 par exemple en forme de cale supportant un crochet 23 de manière à ce qu'un ergot 24, dont la position est décrite ultérieurement, vienne s'engager dans le crochet entraînant ainsi la cale 22 avec sa tige de guidage 25 de sorte que ladite cale 22 vienne par exemple se coincer entre la poulie 6 et la courroie 5 lorsque le moteur 4 tourne dans le sens préférentiel et que la cale 22 a été préalablement mise en position d'approche.A support plate 21 of the device for stopping in position and for rapid unlocking is fixed in a known manner to the tank 8 or to any element that is fixed relative to the axis of the tank 8. The device itself comprises a pad 22 by example in the form of a wedge supporting a hook 23 so that a lug 24, the position of which is described later, comes to engage in the hook thus causing the wedge 22 with its guide rod 25 so that said wedge 22 for example, get stuck between the pulley 6 and the belt 5 when the motor 4 rotates in the preferred direction and that the wedge 22 has been previously put in the approach position.

la cale 22 possède par exemple une forme sensiblement en biseau. Elle est plane du côté venant se plaquer contre la courroie 5 de façon à présenter une grande surface de contact et s'adapte au rayon de courbure de la poulie 6 du côté opposé. Ceci ne préjuge en aucune façon de l'état de surface de la cale, qui peut comporter des moyens qui augmentent la friction par exemple entre elle-même et la courroie 5 ou la poulie 6. La cale 22 peut notamment avoir une surface rugueuse ou encore s'adapter aux sculptures de la courroie 5 s'il y a lieu. Avantageusement, la cale 22 peut être réalisée en un matériau flexible, permettant ainsi de réduire les contraintes exercées sur la courroie 5 et la cale 22.the wedge 22 has for example a substantially beveled shape. It is flat on the side coming to rest against the belt 5 so as to have a large contact surface and adapts to the radius of curvature of the pulley 6 on the opposite side. This does not in any way prejudge the surface condition of the wedge, which may include means which increase the friction for example between itself and the belt 5 or the pulley 6. The wedge 22 can in particular have a rough surface or even adapt to the sculptures of the belt 5 if necessary. Advantageously, the shim 22 can be made of a flexible material, thus making it possible to reduce the stresses exerted on the belt 5 and the shim 22.

Le crochet 23 est soit une pièce rapportée et fixée de manière connue sur la cale 22, soit fait corps avec celui-ci. La cale 22 et son crochet 23 sont supportés par une tige de guidage 25 venant s'insérer dans la bobine 26 fixée sur la platine support 21. La tige de guidage 25 comporte un noyau magnétique 27 permettant une translation dans le sens de l'axe de la tige 25 lorsque la bobine 26 est alimentée par l'intermédiaire des connexions 28 et 29 reliées au module numérique 16. La tige de guidage 25 comporte en outre une butée 30 destinée à maintenir ladite tige 25 de manière à ce que le noyau magnétique 27 soit en bonne position par rapport à la bobine 26 lorsque le dispositif est en position de repos. Dans une variante de réalisation particulière, un ressort de rappel 31 ramène la tige de guidage 25 et par conséquent la cale 22 en position de repos lors d'une remise en marche de la machine à laver après qu'un arrêt en position ait été effectué.The hook 23 is either an insert and fixed in a known manner on the wedge 22, or is integral with it. The wedge 22 and its hook 23 are supported by a guide rod 25 which is inserted into the coil 26 fixed on the support plate 21. The guide rod 25 comprises a magnetic core 27 allowing translation in the direction of the axis of the rod 25 when the coil 26 is supplied via the connections 28 and 29 connected to the digital module 16. The guide rod 25 further comprises a stop 30 intended to hold said rod 25 so that the magnetic core 27 is in a good position relative to the coil 26 when the device is in the rest position. In a particular embodiment, a return spring 31 brings the guide rod 25 and therefore the shim 22 into the rest position when the washing machine is restarted after a stop in position has been made .

Selon une variante de réalisation, les moyens de guidage et de translation sont dissociés: on prévoit alors des rails ou une tige de guidage, cette dernière étant distincte de l'élément portant le noyau magnétique 27, cet élément pouvant bien sûr aussi être une tige.According to an alternative embodiment, the guide and translation means are dissociated: rails or a guide rod are then provided, the latter being distinct from the element carrying the magnetic core 27, this element of course also being able to be a rod .

Comme représenté notamment sur les figures 3 à 5, la machine comprend un bouton de déverrouillage manuel 13 de la porte d'accès 2 de la carrosserie. Le bouton 13 possède un crochet 32 s'enclenchant sur une butée 33 de la porte 2 de carrosserie. De plus, le bouton de déverrouillage manuel 13 actionne un microcontact 19 relié au module numérique 16. Lorsque l'utilisateur enfonce le bouton 13 en cours de lavage, le changement d'état du microcontact 19 entraîne au niveau du module numérique 16 la commande de l'arrêt en position de la machine de la façon décrite ultérieurement. Avantageusement, une impulsion donnée au bouton 13 suffit pour commander l'arrêt en position. Selon une autre variante de réalisation de l'invention, l'impulsion correspondante peut aussi être donnée par l'intermédiaire d'un bouton d'arrêt, non représenté, du tableau de commande, l'interface entre le bouton d'arrêt et le module numérique se faisant de la même manière que pour le bouton de verrouillage manuel 13, en associant le bouton d'arrêt à un microcontact relié au module numérique 16. Ledit bouton d'arrêt du tableau de bord peut aussi posséder la fonction de déverrouillage manuel de la porte d'accès de la carrosserie.As shown in particular in FIGS. 3 to 5, the machine comprises a manual unlocking button 13 of the access door 2 of the bodywork. The button 13 has a hook 32 which engages on a stop 33 of the door 2 of the bodywork. In addition, the manual unlocking button 13 actuates a microswitch 19 connected to the digital module 16. When the user presses the button 13 during washing, the change of state of the microswitch 19 causes the digital module 16 to command the stopping the machine in position as described later. Advantageously, an impulse given to the button 13 is sufficient to command the stop in position. According to another alternative embodiment of the invention, the corresponding pulse can also be given via a stop button, not shown, on the control panel, the interface between the stop button and the digital module being done in the same way as for the manual locking button 13, by associating the button stop at a microswitch connected to the digital module 16. Said stop button on the dashboard can also have the function of manually unlocking the access door of the bodywork.

La porte d'accès 2 de la carrosserie peut aussi être verrouillée automatiquement grâce à un verrou automatique dont le pène 34 vient s'insérer dans une ouverture 35 du doigt 15 de la porte 2 de la carrosserie. Le verrou automatique peut être actionné soit par un élément thermique, soit, selon un mode de réalisation particulier de l'invention, par le dispositif d'arrêt en position. Dans ce cas et comme représenté sur les figures 3 à 5, le pène 34 est relié à la tige de guidage 25 par l'intermédiaire d'un câble flexible 36 coulissant dans une gaine 37. Le câble 36 peut coulisser dans une ouverture pratiquée dans un support 38 fixé à la tige de guidage 25. Une butée 39 fixée au bout du câble règle la hauteur de la tige de guidage 25 à partir de laquelle ladite tige tire sur le câble 36. Cette hauteur est réglée avantageusement de façon à ce que la tige de guidage 25 ne tire le câble 36 au plus tôt qu'à partir du moment où l'ergot 24 tire sur l'ensemble tige-cale-crochet 25-22-23. La course du câble 36 est d'autre part avantageusement calculée de manière à ce que le pène 34 soit désengagé de l'ouverture 35 au plus tard lorsque la cale 22 est dans sa position de blocage. Lorsque le dispositif d'arrêt positionné est au repos, un ressort de compression 40 prenant appui sur une butée 41 force le pène 34 à entrer dans l'ouverture 35, verrouillant ainsi la porte 2 de la carrosserie. Le ressort 40 contribue également à faire revenir la cale 22 dans sa position de repos.The access door 2 of the body can also be locked automatically by means of an automatic lock, the bolt 34 of which is inserted into an opening 35 of the finger 15 of the door 2 of the body. The automatic lock can be actuated either by a thermal element, or, according to a particular embodiment of the invention, by the stop device in position. In this case and as shown in FIGS. 3 to 5, the bolt 34 is connected to the guide rod 25 by means of a flexible cable 36 sliding in a sheath 37. The cable 36 can slide in an opening made in a support 38 fixed to the guide rod 25. A stop 39 fixed to the end of the cable adjusts the height of the guide rod 25 from which said rod pulls on the cable 36. This height is advantageously adjusted so that the guide rod 25 only pulls the cable 36 as soon as the lug 24 pulls on the rod-wedge-hook assembly 25-22-23. The stroke of the cable 36 is also advantageously calculated so that the bolt 34 is disengaged from the opening 35 at the latest when the wedge 22 is in its locked position. When the positioned stop device is at rest, a compression spring 40 bearing on a stop 41 forces the bolt 34 to enter the opening 35, thus locking the door 2 of the bodywork. The spring 40 also contributes to returning the wedge 22 to its rest position.

Le dispositif est en position de repos lorsqu'un cycle de lavage est en cours. La figure 3 représente le dispositif dans cette configuration. La porte d'accès 2 de la carrosserie est alors maintenue fermée par le verrou manuel 13 et le pène 34, et la cale 22 et son crochet 23 sont dans une position telle qu'ils ne gênent pas la rotation de la poulie 6. Le sens et la vitesse de rotation du tambour 7 peuvent être quelconques. On définit un sens préférentiel de rotation du tambour 7 et un sens contraire, le sens préférentiel étant le sens contraire aux aiguilles d'une montre par rapport aux figures 1 et 3 à 5 (sens S1).The device is in the rest position when a washing cycle is in progress. Figure 3 shows the device in this configuration. The access door 2 of the bodywork is then kept closed by the manual lock 13 and the bolt 34, and the wedge 22 and its hook 23 are in a position such that they do not hinder the rotation of the pulley 6. The direction and the speed of rotation of the drum 7 can be arbitrary. We define a preferential direction of rotation of the drum 7 and an opposite direction, the preferential direction being the anti-clockwise direction with respect to FIGS. 1 and 3 to 5 (direction S1).

Un arrêt en position est commandé sous deux circonstances: soit lorsque l'utilisateur envoie une impulsion correspondante en pressant le bouton de déverrouillage manuel 13 ou un bouton d'arrêt sur le tableau de commande 11, soit lorsque le lavage du linge est terminé. Dans ce dernier cas, la commande nécéssaire peut par exemple être donnée par l'intermédiaire d'un contact du programmateur électromécanique.A stop in position is controlled under two circumstances: either when the user sends a corresponding pulse by pressing the manual unlocking button 13 or a stop button on the control panel 11, or when the washing of the laundry is finished. In the latter case, the necessary command can for example be given via a contact of the electromechanical programmer.

Dans un premier temps, le module numérique 16 commande l'arrêt non positionné de la machine. Ceci peut être réalisé en coupant l'alimentation du moteur 4. Lorsque la vitesse du moteur 4 est nulle, le module numérique 16 commande une rotation du moteur 4 à faible vitesse, correspondant par exemple à une rotation du tambour à 30 tours par minute, dans le sens préférentiel S1. En même temps, le module numérique 16 commande la mise sous tension de la bobine 26. La translation du noyau 27 et donc de la tige de guidage 25 pousse la cale 22 et son crochet 23 en position dite d'approche, cette position étant telle que l'ergot 24 solidaire de la poulie 6 s'engage dans le crochet 23, entraînant celui-ci dans son mouvement. Le moyen de manoeuvre du moyen de blocage comprend donc, dans le présent exemple de réalisation, la bobine 26, le noyau 27 et la tige de guidage 25. La position dite d'approche est représentée à la figure 4. La cale 22 vient alors se coincer progressivement entre la poulie 6 et la courroie 5, la vitesse et l'inertie du tambour 7 et de la poulie 6 étant telles que l'engagement de la cale 22 est suffisant pour d'une part bloquer la poulie 6 et donc le tambour 7 en rotation dans le sens préférentiel S1, et d'autre part pour empêcher une rotation du tambour 7 dans le sens contraire à cause d'un éventuel balourd de linge, une fois l'alimentation du moteur 4 coupée. La position de l'ergot 24 sur la poulie 6 est telle que lorsque cette dernière et la courroie 5 sont bloquées, la trappe d'accès 12 du tambour 7 soit en face du portillon 9 de la cuve. L'ergot 24 est avantageusement placé sur une des faces de la poulie 6.Firstly, the digital module 16 controls the unpositioned stop of the machine. This can be achieved by cutting off the power to the motor 4. When the speed of the motor 4 is zero, the digital module 16 controls a rotation of the motor 4 at low speed, corresponding for example to a rotation of the drum at 30 revolutions per minute, in the preferential direction S1. At the same time, the digital module 16 controls the tensioning of the coil 26. The translation of the core 27 and therefore of the guide rod 25 pushes the wedge 22 and its hook 23 into the so-called approach position, this position being such that the lug 24 integral with the pulley 6 engages in the hook 23, causing the latter in its movement. The operating means of the locking means therefore comprises, in the present embodiment, the coil 26, the core 27 and the guide rod 25. The so-called approach position is shown in FIG. 4. The wedge 22 then comes gradually get stuck between the pulley 6 and the belt 5, the speed and inertia of the drum 7 and the pulley 6 being such that the engagement of the shim 22 is sufficient to on the one hand block the pulley 6 and therefore the drum 7 rotating in the preferential direction S1, and on the other hand to prevent rotation of the drum 7 in the opposite direction because of a possible unbalance of linen, once the power to the motor 4 is cut. The position of the pin 24 on the pulley 6 is such that when the latter and the belt 5 are blocked, the hatch access 12 of the drum 7 is opposite the door 9 of the tank. The lug 24 is advantageously placed on one of the faces of the pulley 6.

Lorsque la cale 22 commence à s'engager dans sa position de blocage, la tige 25 tire sur le câble 36 par l'intermédiaire du support 38, solidaire de la tige de guidage 25, qui vient se placer contre la butée 39. Le pène 34 libère alors le doigt 15. Le ressort de compression 14 repousse la porte d'accès 2 de la carrosserie, permettant à l'utilisateur d'accéder à l'intérieur de la machine. En même temps, le microcontact de sécurité 18 coupe l'alimentation générale de la machine, et plus particulièrement celle du moteur 4.When the wedge 22 begins to engage in its blocking position, the rod 25 pulls on the cable 36 via the support 38, integral with the guide rod 25, which comes to be placed against the stop 39. The bolt 34 then releases the finger 15. The compression spring 14 pushes back the access door 2 from the body, allowing the user to access the interior of the machine. At the same time, the safety microswitch 18 cuts off the general supply of the machine, and more particularly that of the motor 4.

Il est à noter qu'il faut que le crochet 32 du bouton de déverrouillage manuel 13 soit dégagé de la butée 33 pour que la porte d'accès 2 de la carrosserie s'ouvre. Ceci ne pose pas de problème lorsque le bouton 13 est un bouton bistable, car dans ce cas, le crochet 32 reste dégagé de la butée 33 même si l'utilisateur relâche le bouton.It should be noted that the hook 32 of the manual unlocking button 13 must be released from the stop 33 so that the access door 2 of the bodywork opens. This is not a problem when the button 13 is a bistable button, because in this case, the hook 32 remains released from the stop 33 even if the user releases the button.

S'il s'agit d'un bouton poussoir monostable (c'est à dire un bouton qui revient dans sa position initiale dès qu'on le relâche), il faut que l'utilisateur tienne celui-ci appuyé jusqu'à l'arrêt en position du tambour pour que la porte d'accès 2 de la carrosserie s'ouvre. Avantageusement, on prévoit dans ce dernier cas, selon un mode de réalisation particulier, un moyen de détection de la position du tambour. Ledit moyen est relié au module numérique 16, qui traîte les informations qui en émanent. Lorsque le tambour 7 est correctement positionné et que sa vitesse est nulle, l'utilisateur est informé de façon visuelle par l'intermédiaire d'un élément du tableau de commande 11. Un tel dispositif évite à l'utilisateur de maintenir le bouton 13 appuyé jusqu'à l'arrêt en position du tambour.If it is a monostable push button (i.e. a button which returns to its initial position as soon as it is released), the user must hold it pressed down until stop in position of the drum so that the access door 2 of the bodywork opens. Advantageously, provision is made in the latter case, according to a particular embodiment, for means for detecting the position of the drum. Said means is connected to the digital module 16, which processes the information which emanates therefrom. When the drum 7 is correctly positioned and its speed is zero, the user is visually informed by means of an element of the control panel 11. Such a device avoids the user having to keep the button 13 pressed until the drum stops.

Tant que le tambour n'est pas dans la position désirée (à cause d'un trop important balourd de linge créant un moment suffisant pour débloquer la cale 22 par exemple), le cycle de blocage d'arrêt en position est relancé, précédé éventuellement d'une phase d'élimination du balourd, cette dernière ne faisant pas partie en soi de la présente invention. Avantageusement, si après un certain nombre d'essais, par exemple 5 essais, l'arrêt en position n'a toujours pas pu être réalisé, cette dernière information est également affichée, la porte d'accès 2 pouvant alors être débloquée par des moyens manuels dont la mise en oeuvre est evidente pour l'homme du métier. L'alimentation du moteur est également coupée dans ce cas.As long as the drum is not in the desired position (due to an excessive imbalance of laundry creating a sufficient moment to unlock the shim 22 for example), the stop blocking cycle in position is restarted, possibly preceded an imbalance elimination phase, the latter not being in itself part of the present invention. Advantageously, if after a certain number of tries, by example 5 tests, stopping in position still could not be achieved, this last information is also displayed, the access door 2 can then be unlocked by manual means whose implementation is obvious to humans of career. The motor power is also cut in this case.

Le moyen de détection de la position du tambour peut, par exemple, comprendre une étiquette réfléchissante placée sur la poulie 6 et une diode émettrice de lumière et un capteur placés en face de la poulie. D'autres moyens peuvent évidemment être utilisés, tels des capteurs Reed ou à effet Hall associés à un aimant permanent judicieusement placé sur la poulie 6.The means for detecting the position of the drum may, for example, comprise a reflective label placed on the pulley 6 and a light-emitting diode and a sensor placed opposite the pulley. Other means can obviously be used, such as Reed or Hall effect sensors associated with a permanent magnet judiciously placed on the pulley 6.

Selon un mode de réalisation particulier de l'invention, celle-ci comporte un dispositif de coupure du courant non représenté autre que celui commandé par le microcontact de sécurité 18 , caractérisé en ce qu'il coupe l'alimentation du moteur 4 et de la bobine 26 lorsqu'une élévation intempestive du courant dans le rotor ou le stator du moteur 4 est détectée alors que la vitesse de rotation dudit moteur est nulle. Ce dispositif de sécurité supplémentaire peut être nécéssaire dans le cas où le pène 34 reste bloqué dans l'ouverture 35 alors que la rotation du tambour 7 est bloquée mais que le moteur 4 est toujours alimenté, le microcontact de sécurité 19 ne se déclenchant que lors de l'ouverture de la porte d'accès 2 de la carrosserie. On évitera ainsi d'endommager la cale 22 ou la courroie 5. La réalisation d'un tel dispositif de sécurité est à la portée de l'homme du métier.According to a particular embodiment of the invention, the latter comprises a device for cutting the current, not shown, other than that controlled by the safety microswitch 18, characterized in that it cuts the supply to the motor 4 and to the coil 26 when an untimely rise in current in the rotor or stator of motor 4 is detected while the speed of rotation of said motor is zero. This additional safety device may be necessary in the case where the bolt 34 remains blocked in the opening 35 while the rotation of the drum 7 is blocked but the motor 4 is still supplied, the safety microswitch 19 only being triggered when the opening of the access door 2 of the bodywork. This will prevent damage to the shim 22 or the belt 5. The production of such a safety device is within the reach of the skilled person.

Le module numérique peut également servir à détecter un blocage du rotor. Si par exemple une rotation du moteur a été commandée par ledit module 16, il suffira de vérifier la bonne éxecution de cette commande en surveillant le tachymètre. Une telle surveillance peut facilement être programmée. Dans le cas où l'on désire savoir si le moteur est bloqué alors qu'aucune commande de rotation n'a été lancée, il suffira d'effectuer cette commande au préalable.The digital module can also be used to detect a rotor blockage. If, for example, a rotation of the motor has been controlled by said module 16, it will suffice to verify the correct execution of this command by monitoring the tachometer. Such monitoring can easily be programmed. If you want to know if the motor is blocked when no rotation command has been launched, it will suffice to perform this command beforehand.

La machine sera remise sous tension une fois le microcontact de sécurité 19 fermé, c'est à dire une fois la porte d'accès 2 de la carrosserie refermée.The machine will be turned on again once the safety microswitch 19 is closed, that is to say once the access door 2 of the bodywork is closed.

La machine est constituée de façon à ce que lors de la remise en marche, le tambour 7 tourne d'abord dans le sens contraire au sens préférentiel S1. Le module numérique 16 est programmé en conséquence. Ceci a pour effet de débloquer la cale 22, de désengager l'ergot 24 du crochet 23, permettant ainsi à la cale 22 et au crochet 23 de reprendre leur position de repos, soit par simple gravité, soit à l'aide de ressorts de compression 31 et/ou 40.The machine is constructed so that when restarting, the drum 7 first turns in the opposite direction to the preferred direction S1. The digital module 16 is programmed accordingly. This has the effect of unlocking the wedge 22, of disengaging the lug 24 of the hook 23, thus allowing the wedge 22 and the hook 23 to return to their rest position, either by simple gravity, or by means of springs of compression 31 and / or 40.

Selon un mode de réalisation, des moyens sont prévus pour augmenter l'angle aigu entre le crochet 23 et la cale 22 lorsque le moyen de blocage est mis en position d'approche, de façon à faciliter l'accrochage du crochet 23 par l'ergot 24 à ce moment, tout en évitant un accrochage intempestif à d'autres moments. De plus, on prévoit un amortisseur d'une part pour amortir les chocs mécaniques subis lors d'une mise en postion d'approche, d'autre part pour replier le crochet 23 lorsque le dispositif revient dans sa position de repos. Ce mode de réalisation a l'avantage d'augmenter le déplacement relatif du crochet 23 pour une longueur de translation de la tige de guidage 25 identique à celle du premier exemple de réalisation.According to one embodiment, means are provided for increasing the acute angle between the hook 23 and the wedge 22 when the locking means is brought into the approach position, so as to facilitate the hooking of the hook 23 by the lug 24 at this time, while avoiding accidental snagging at other times. In addition, a shock absorber is provided on the one hand to absorb the mechanical shocks undergone during an approaching position, on the other hand to fold the hook 23 when the device returns to its rest position. This embodiment has the advantage of increasing the relative displacement of the hook 23 for a length of translation of the guide rod 25 identical to that of the first exemplary embodiment.

Lorsque le dispositif est au repos, le crochet 23 est replié contre la cale 22. Selon ce mode de réalisation, le crochet 23 est coudé et est muni au niveau du coude d'un axe venant se loger dans un emplacement correspondant non représenté de la cale 22, de façon à ce que le crochet 23 puisse pivoter autour de son axe tout en étant bloqué en translation parallèlement à cet axe. Le crochet 23 possède au delà de son coude un bras, dont le côté formant avec l'autre bras un angle aigu vient se plaquer contre une extrémité d'un amortisseur. Cet amortisseur est tel que l'amortissement se fait par compression sur sa longueur lorsque le crochet 23 pivote autour de son axe dans le sens des aiguilles d'une montre.When the device is at rest, the hook 23 is folded against the wedge 22. According to this embodiment, the hook 23 is bent and is provided at the elbow with an axis coming to be housed in a corresponding location, not shown, of the wedge 22, so that the hook 23 can pivot around its axis while being blocked in translation parallel to this axis. The hook 23 has an arm beyond its elbow, the side of which forms an acute angle with the other arm is pressed against one end of a damper. This damper is such that the damping is done by compression over its length when the hook 23 pivots about its axis in the clockwise direction.

L'amortisseur peut par exemple être une ressort ou une pièce en un matériau élastique compressible.The damper can for example be a spring or a part made of a compressible elastic material.

Le côté du bras opposé au côté venant s'appuyer contre l'amortisseur est arrondi, de manière à ce qu'une butée fasse pivoter le crochet 23 en venant glisser le long de ce côté arrondi lorsque la cale 22 est translatée vers sa position d'approche. La butée est fixe par rapport à la cuve 8.The side of the arm opposite the side coming to bear against the shock absorber is rounded, so that a stop rotates the hook 23 while sliding along this rounded side when the wedge 22 is translated to its position d 'approach. The stop is fixed relative to the tank 8.

En position de repos, l'amortisseur possède un allongement maximal. L'angle aigu entre le bras du crochet 23 où viendra s'accrocher l'ergot 24 et le côté de la cale 22 venant se plaquer contre la poulie 1 a alors son ouverture minimum. Lorsque le dispositif se met en position d'approche, l'ouverture de l'angle s'agrandit, la butée appuyant sur le côté arrondi du bras, tandis que l'amortisseur commence à se comprimer. Une fois la position d'approche atteinte, le crochet 23 attend l'arrivée de l'ergot 24. Le choc dû au contact entre le crochet 23 et l'ergot 24 est au moins partiellement absorbé par l'amortisseur. Tout se passe alors comme dans le premier exemple de réalisation.In the rest position, the shock absorber has maximum elongation. The acute angle between the arm of the hook 23 where the lug 24 will hang and the side of the wedge 22 coming to press against the pulley 1 then has its minimum opening. When the device moves into the approach position, the opening of the angle widens, the stop pressing on the rounded side of the arm, while the shock absorber begins to compress. Once the approach position has been reached, the hook 23 waits for the lug 24 to arrive. The shock due to contact between the hook 23 and the lug 24 is at least partially absorbed by the shock absorber. Everything then happens as in the first example of embodiment.

Selon un mode de réalisation représenté aux figures 6 à 8, on prévoit des moyens pour améliorer le maintien du dispositif, et par conséquent du tambour, en position de blocage.According to an embodiment shown in Figures 6 to 8, means are provided to improve the maintenance of the device, and therefore of the drum, in the locked position.

Ces moyens d'amélioration de maintien comprennent un élément rétractable 47,48 exerçant, sur une lamelle 46 solidaire de l'ensemble tige-cale 25,22 et comportant au moins un creux, une force telle que, lorsque le dispositif est en position de blocage et que la tête 48 de l'élément rétractable est positionnée dans un creux de la lamelle 46, le dispositif soit maintenu en position malgré un éventuel balourd de linge à l'intérieur du tambour 7.These holding improvement means comprise a retractable element 47, 48 exerting, on a strip 46 integral with the rod-wedge assembly 25, 22 and comprising at least one recess, a force such that, when the device is in the position of blocking and that the head 48 of the retractable element is positioned in a hollow in the lamella 46, the device is held in position despite a possible unbalance of linen inside the drum 7.

Les figures 6, 7 et 8 représentent une partie du dispositif selon l'invention accompagné desdits moyens d'amélioration de maintien lorsque ledit dispositif est respectivement en position de repos ou de blocage. Selon ce mode de réalisation, on prévoit une lamelle 46 en forme de S dont l'axe vertical est parallèle à l'axe de translation de la cale 22 et de sa tige de guidage 25. La lamelle 46 est solidaire de l'ensemble cale-tige et peut par exemple consister en un prolongement du support 38, comme le montrent les figures 6 et 7. Lorsque la lamelle 46 se déplace en même temps que la tige de guidage 25, elle vient frotter contre une tige de verrouillage 47, dont l'axe est avantageusement perpendiculaire à l'axe de translation de ladite tige 47. Cette dernière est munie d'une tête 48 au bout arrondi et d'un anneau 49 sur lequel prend appui un ressort 50. L'ensemble est maintenu entre deux butées 51 et 52, fixées sur la platine de support 21, comme illustré par la figure 8, de façon à permettre à la tige 47 de se translater entre deux positions, l'une étant atteinte lorsque l'anneau est en appui contre la butée 52, l'autre étant atteinte lorsque le ressort 50 est comprimé. La première position est la position de repos.Figures 6, 7 and 8 show a part of the device according to the invention accompanied by said means for improving maintenance when said device is respectively in the rest or blocking position. According to this embodiment, a strip 46 is provided in S-shape whose vertical axis is parallel to the translation axis of the wedge 22 and its guide rod 25. The lamella 46 is integral with the wedge-rod assembly and may for example consist of an extension of the support 38, as shown in FIGS. 6 and 7. When the strip 46 moves at the same time as the guide rod 25, it comes to rub against a locking rod 47, the axis of which is advantageously perpendicular to the axis of translation of said rod 47. The latter is provided with a head 48 at the rounded end and with a ring 49 on which a spring 50 bears. The assembly is held between two stops 51 and 52, fixed on the support plate 21 , as illustrated in FIG. 8, so as to allow the rod 47 to translate between two positions, one being reached when the ring is in abutment against the stop 52, the other being reached when the spring 50 is compressed. The first position is the rest position.

Lorsque la cale 22 et sa tige de guidage 25 sont entraînées vers la position de blocage, la lamelle 46 entre en contact avec la tête 48, qui se rétracte sous l'effet de la force exercée. La tête 48 suit alors les courbes de la lamelle 46. La longueur de cette lamelle 46 est calculée de façon à ce que la tête 48 vienne se placer dans le creux formé par la boucle inférieure du S au moment même où la cale 22 est en position de blocage. La raideur du ressort 50 est calculée de façon à s'opposer efficacement à une retombée éventuelle de la cale due à un balourd de linge exceptionellement important tout en permettant un déverrouillage de la tête 48 sous l'effet du couple moteur lors de la remise en marche de l'ensemble après qu'un arrêt en position ait eu lieu.When the wedge 22 and its guide rod 25 are driven towards the locking position, the strip 46 comes into contact with the head 48, which retracts under the effect of the force exerted. The head 48 then follows the curves of the strip 46. The length of this strip 46 is calculated so that the head 48 comes to be placed in the hollow formed by the lower loop of the S at the very moment when the wedge 22 is in blocking position. The stiffness of the spring 50 is calculated so as to effectively oppose any fallout of the wedge due to an exceptionally large unbalance of laundry while allowing the head 48 to be unlocked under the effect of the engine torque during the refitting. running of the assembly after a stop in position has taken place.

Selon une variante du précédent exemple, la tête 48 est immobile tandis que la lamelle 46 est flexible.According to a variant of the previous example, the head 48 is stationary while the strip 46 is flexible.

Selon un mode de réalisation non représenté, le moyen de manoeuvre qui place la cale 22 en position d'approche n'effectue pas une translation, mais une rotation ou la combinaison d'une rotation et d'une translation.According to an embodiment not shown, the operating means which places the wedge 22 in the approach position does not perform a translation, but a rotation or the combination of a rotation and a translation.

Selon un autre mode de réalisation, le dispositif d'arrêt en position est utilisé sans le déverrouillage rapide de la porte d'accès.According to another embodiment, the stop device in position is used without the rapid unlocking of the access door.

Selon un autre mode de réalisation non représenté, le moyen d'accrochage solidaire du tambour 7 ou d'une pièce du dispositif d'entraînement du tambour, telle que la poulie 6, est un crochet.According to another embodiment not shown, the hooking means integral with the drum 7 or with a part of the drum drive device, such as the pulley 6, is a hook.

Selon un mode de réalisation non représenté, le dispositif d'arrêt en position et de déverrouillage rapide de la porte d'accès est utilisé avec un appareil à tambour horizontal sans cuve étanche. Dans ce cas, la courroie est posée à même le tambour. Le moyen d'accrochage est alors avantageusement fixé sur la partie cylindrique du tambour.According to an embodiment not shown, the device for stopping in position and for rapidly unlocking the access door is used with a horizontal drum device without a sealed tank. In this case, the belt is placed directly on the drum. The attachment means is then advantageously fixed to the cylindrical part of the drum.

Claims (24)

  1. Device for stopping a horizontal-drum machine in position, including a means of locking the drive device of the drum, characterized in that the locking means is a wedge-shaped shoe (22) which, by wedging, locks the drum (7) in a given position, the shoe becoming wedged between the drive belt (5) of the drum (7) or a component (6) of the drive device itself integral with the drum, according to whether the belt is placed directly on the drum or the said component, the shoe having a hook (23) driven by a catching means (24) integral with the drum (7) or with the component (6).
  2. Device according to Claim 1, characterized in that the shoe (22) becomes wedged when an operating means (25, 26, 27) drives it from a rest position to a position where catching is possible, the catching means (24) being placed in such a way that, when locking is carried out, the hatch of the drum (7) is opposite the access aperture of the machine.
  3. Device according to either of the preceding claims, characterized in that the hook (23) is positioned in such a way as to be able to be driven by the catching means (24) integral with the drum (7) or with the component (6), when the locking means is put into approach position by an operating means (25, 26, 27).
  4. Device according to any one of the preceding claims, characterized in that the catching means integral either with the drum (7), or with the component (6) is a stud (24) or a hook.
  5. Device according to any one of the preceding claims, characterized in that when the drum (7) is enclosed within a sealed tub (8) and is integral via its axis with a pulley (6) driven by a belt (5), the catching means is placed on one side of the pulley (6).
  6. Device according to one of Claims 1 to 4, characterized in that, in washing machines and/or dryers in which the belt (5) drives the drum (7) directly, the catching means is placed on the cylindrical part of the drum (7).
  7. Device according to one of the preceding claims, characterized in that the operating means is a device for translating a guide rod (25) integral with the wedge (22) and with its hook (23).
  8. Device according to Claim 7, characterized in that the translation device comprises a magnetic core (27) fixed to the guide rod (25) and a magnetic coil (26) which, when power is applied to it, performs the desired translation and through the axis of which the guide rod (25) and the core (27) pass.
  9. Device according to one of the preceding claims, characterized in that the guidance and translation functions are not performed by the same element.
  10. Device according to one of the preceding claims, characterized in that a device for stopping in position is combined with a device for rapid unlocking of the access door (2) of the cabinet which unlocks the automatic safety lock of the appliance when or at the same time as the positioned stopping is carried out.
  11. Device according to Claim 10, characterized in that the automatic safety lock of the appliance has a bolt (34) linked by a cable (36) to the guide rod (25) of the wedge (22), the travel of the said cable (36) being set in such a way that the cable (36) pulls on the bolt (34) at the earliest when the stud (24) is engaged in the hook (23), and in such a way that the lock is completely unlocked when the wedge (22) is in its locking position.
  12. Device according to one of the preceding claims, characterized in that the stopping in position is controlled by means of a push button (13) linked to a microcontact (19) the state of which is picked up by the digital control module (16).
  13. Device according to one of the preceding claims, characterized in that the stopping in position is controlled by the digital module (16) or directly by the programmer at the end of the clothes washing and/or drying.
  14. Device according to one of the preceding claims, characterized in that before putting the wedge-hook assembly (22, 23) into approach position, the motor (4) causes the drum (7) to turn at low speed in the preferred direction (S1).
  15. Device according to one of the preceding claims, characterized in that the access door (2) of the cabinet of the horizontal-drum machine is linked to a safety microcontact (19) which cuts off the power supply to the appliance when the access door (2) is opened.
  16. Device according to Claim 15, characterized in that the horizontal-drum machine comprises a drum-locking detector, and in that the appliance comprises means for cutting off the power supply to the motor (4) in the event that that has not been done by the safety microcontact (19).
  17. Device according to Claim 16, characterized in that this detection is carried out when an abnormal rise appears in the current in the rotor or the stator of the motor or when the digital module (16), by means of the tachometer (17), detects zero or insufficient rotation although rotation of the motor has been ordered.
  18. Device according to one of the preceding claims, characterized in that, when the machine is restarted, the drum first of all turns in the direction opposite (S2) to the preferred direction, so that the stud (24) is disengaged from the hook (23).
  19. Device according to one of the preceding claims, characterized in that, when the machine is restarted, the wedge (22) and its hook (23) are brought back into their rest position by gravity or by at least one spring (31, 40).
  20. Device according to one of the preceding claims, characterized in that means are provided for causing the hook (23) to pivot so as to increase the aperture of the angle for receiving the stud (24) when the device is put into approach position.
  21. Device according to Claim 20, characterized in that the said pivoting means comprise a damper acting as both a shock absorber and a return spring folding the hook (23) when the device comes back into rest position.
  22. Device according to one of the preceding claims, characterized in that means are provided for enhancing the hold of the device and thus of the drum when they are in locking position.
  23. Device according to Claim 22, characterized in that the said hold-enhancing means comprise the retractable element (47, 48) exerting, on a strip (46) integral with the rod-wedge assembly (25, 22) and including at least one recess, a force such that, when the retractable device is positioned in a recess of the strip (46), the device is held in position despite any imbalance of clothes within the drum.
  24. Device according to either of Claims 22 and 23, characterized in that the hold force exerted by the retractable element (47, 48) is calculated so as to allow the motor torque to disengage the head (48) from the recess of the strip (46) when the machine is put back into operation.
EP93402957A 1992-12-22 1993-12-07 Device for stopping the drum in a position and for quickly unlocking the access door of a machine with a horizontal drum Expired - Lifetime EP0604261B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9215484 1992-12-22
FR9215484A FR2699563B1 (en) 1992-12-22 1992-12-22 Device for stopping the drum in position and quickly unlocking the access door of a horizontal drum machine.

Publications (2)

Publication Number Publication Date
EP0604261A1 EP0604261A1 (en) 1994-06-29
EP0604261B1 true EP0604261B1 (en) 1997-01-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP93402957A Expired - Lifetime EP0604261B1 (en) 1992-12-22 1993-12-07 Device for stopping the drum in a position and for quickly unlocking the access door of a machine with a horizontal drum

Country Status (4)

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EP (1) EP0604261B1 (en)
DE (1) DE69307675T2 (en)
ES (1) ES2096892T3 (en)
FR (1) FR2699563B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220282419A1 (en) * 2019-08-20 2022-09-08 Qingdao Haier Drum Washing Machine Co., Ltd Washing appliance and determination method for locking a drum of washing appliance

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Publication number Priority date Publication date Assignee Title
DE19714843C1 (en) * 1997-04-10 1998-08-13 Hella Kg Hueck & Co Operating device for washing machine with drum
FR2778678B1 (en) * 1998-05-15 2000-08-04 Ciapem DEVICE FOR AUTOMATICALLY OPENING THE GATE OF A WASHING OR DRYING MACHINE
ITTO20040691A1 (en) * 2004-10-08 2005-01-08 Elbi Int Spa LOCKING DEVICE FOR A MOBILE ELEMENT, IN PARTICULAR FOR A UPHOLSTER WASHING MACHINE BASKET
CN109518402B (en) * 2017-09-18 2024-03-26 佛山市顺德海尔电器有限公司 Clothes treatment equipment and positioning device thereof
CN112481926B (en) * 2019-08-20 2022-06-21 青岛海尔洗衣机有限公司 Washing equipment and method for judging drum unlocking of washing equipment

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DE2311956A1 (en) * 1973-03-08 1974-09-12 Siemens Elektrogeraete Gmbh DEVICE FOR ACHIEVING THE DRUM STANDSTILL OF A CASE LOADABLE DRUM WASHING MACHINE IN THE OPERATING POSITION
CH624722A5 (en) * 1978-01-27 1981-08-14 Zug Verzinkerei Ag Laundry-treatment machine.
DE3310279A1 (en) * 1983-03-22 1984-09-27 Miele & Cie GmbH & Co, 4830 Gütersloh Positioning device for the drum of a casing-loadable drum-type washing machine
FR2649730B1 (en) * 1989-07-11 1991-10-11 Ire Ind Reunies Electromenager WASHING MACHINE WITH DRUM POSITIONING

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220282419A1 (en) * 2019-08-20 2022-09-08 Qingdao Haier Drum Washing Machine Co., Ltd Washing appliance and determination method for locking a drum of washing appliance

Also Published As

Publication number Publication date
DE69307675D1 (en) 1997-03-06
FR2699563A1 (en) 1994-06-24
FR2699563B1 (en) 1995-01-20
DE69307675T2 (en) 1997-05-15
EP0604261A1 (en) 1994-06-29
ES2096892T3 (en) 1997-03-16

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