EP0551238B1 - Device for stopping the drum - Google Patents

Device for stopping the drum Download PDF

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Publication number
EP0551238B1
EP0551238B1 EP93420003A EP93420003A EP0551238B1 EP 0551238 B1 EP0551238 B1 EP 0551238B1 EP 93420003 A EP93420003 A EP 93420003A EP 93420003 A EP93420003 A EP 93420003A EP 0551238 B1 EP0551238 B1 EP 0551238B1
Authority
EP
European Patent Office
Prior art keywords
drum
lever
cam
arm
shoe
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
EP93420003A
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German (de)
French (fr)
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EP0551238A1 (en
Inventor
Georges Astic
Denis Girardin
Jean Vollot
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.)
Noalia Solutions SA
Original Assignee
Crouzet Appliance Controls SA
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Publication date
Application filed by Crouzet Appliance Controls SA filed Critical Crouzet Appliance Controls SA
Publication of EP0551238A1 publication Critical patent/EP0551238A1/en
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Publication of EP0551238B1 publication Critical patent/EP0551238B1/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 present invention relates to washing machines and especially those with top loading.
  • German patent application 3,310,279 describes a device for stopping and maintaining a drum washing machine in the top hatch position at the end or when an interruption of a washing cycle.
  • a spring pulls on a brake and a lever up a position where the lever abuts on the drum preventing the brake acting on the drum.
  • the drum is then driven in rotation until the lever plunges into a recess in the drum allowing the brake to act on the drum under spring action while the drum motor is stopped.
  • the brake is brought to act abruptly on the drum while the latter still rotates by inertia, which causes an unwanted brutal shock. To limit this shock, it a specific slow rotation speed is provided, which makes the more complex system.
  • An object of the present invention is to provide a device for stopping a washing machine drum by hatch position at the top at the end or during an interruption of a wash cycle.
  • Another object of the present invention is to provide such a device for holding the drum in position hatch at the top during unloading.
  • a stop device comprising a shoe which is normally in a rest position high allowing a washing machine drum to perform freely from rotations.
  • the shoe is lowered and pressed against the drum to rub against it at the same time as the drive motor of the drum is restarted.
  • the drive motor is sufficiently powerful to rotate the drum despite hoof braking forces.
  • the present invention relates more particularly to a stop device in a predetermined position of a drum driven by a motor to perform rotation cycles around an axis integral with a frame.
  • This device includes: a brake movable relative to the frame; an articulated detector lever on the frame; means likely to bring the brake and the sensor lever in a rest position or in a position active where the brake acts on the drum or an integral part of the drum; a finger secured to the drum capable of actuating the detector lever in the active position; and cooperating means with the sensor lever to start the engine in the active position and stop it when said lever is actuated by said finger.
  • the brake is a shoe brake mounted on a lever articulated to a end on the frame and whose free end is actuated by a connecting rod and crank system.
  • said crank comprises a cam against which is biased an arm of the detector lever, the cam being such that, at the position rest, one arm of the lever is outside the trajectory of said finger, and that, in the active position, the arm is in the path of the finger.
  • the detector lever cooperates with a setting switch operation of said motor, the detector lever actuating the switch in said active position.
  • the cam includes an indentation into which a heel fits of the sensor lever in the active position.
  • the cam includes a notch cooperating with a second switch detection of the cam position.
  • the shoe is articulated on the lever eccentrically and a spring is arranged between the lever and the shoe.
  • a stop device shown very schematically in Figures 1A to 1C includes a brake consisting of a shoe 1 secured to a lever 3 substantially horizontal.
  • the left end of lever 3 is articulated by compared to frame 5 of the washing machine.
  • a rod system 7 and crank 8 acts on the right end of lever 3 to whether or not to press the shoe 1 on a washing machine drum 10.
  • the crank 8 is in fact a circular cam pressing on one, 12-1, of the arms of a lever 12 articulated on the built near the lower part of the cam 8.
  • the arm 12-1 extends up and left and the lever 12 includes another arm 12-2 extending down and to the right up to vicinity of the drum 10.
  • the arm 12-1 is biased in the direction clockwise to cam 8 by spring 14 disposed between the free end of the arm 12-1 and the frame.
  • the position of figure lA corresponds to the position rest of the stop device according to the invention.
  • Leverage 3 is in a high position and shoe 1 does not press on the drum 10.
  • the arm 12-1 presses on a circular part of the cam 8 and arm 12-2 is in a raised position where its end free is outside the trajectory of an integral finger 16 of the drum 10. In this position, the drum 10 performs freely from rotations.
  • the cam 8 When stopping a rotation cycle, whether at at the end of a cycle or during a voluntary interruption, the cam 8 is rotated clockwise. By turning, this cam 8 lowers the lever 3 and presses the shoe 1 against the drum 10.
  • FIG. 1B corresponds to an active position of the device stop.
  • Cam 8 has rotated 180 ° relative to the position of Figure 1A and resulted in the blocking of the drum 10 by shoe 1.
  • Arm 12-1 is in contact with a flat 8-1 of cam 8, which caused a rotation in the direction clockwise lever 12 relative to position of Figure 1A.
  • the arm 12-1 activates a switch 18 and the free end of the arm 12-2 is in the trajectory of finger 16.
  • the profile of the free end of the arm 12-2 is such, as shown in the figures, that the finger 16 can lift this end regardless of the direction of drum rotation.
  • Switch 18 causes the rotation of the cam 8 and starts the drive motor drum 10 clockwise or clockwise reverse.
  • Drum 10 is braked by shoe 1 but the coefficient friction of this shoe is chosen so that the motor can overcome friction forces.
  • the drum 10 starts to rotate slowly and at a given instant finger 16 meets the free end of the arm 12-2. Then, the lever 12 is driven by the finger in the direction counterclockwise.
  • the rotation speed of the drum is chosen slow so that the kinetic energy of the drum is low enough that after deactivating switch 18, the drum stops at an angle such that the finger 16 always keeps arm 12-2 up.
  • Figure 1C shows the stop device at a instant after finger 16 meets the end free arm 12-2.
  • the arm 12-1 of the lever 12 has away from switch 18 and deactivated it. So the drum drive motor 10 stops and the drum remains blocked by shoe 1 in this position. Of course, we do match this position the hatch position at the top of the drum 10.
  • the cam 8 When starting a new rotation cycle, the cam 8 is rotated clockwise shows so that it returns to its initial position of the figure 1A where the drum 10 is unlocked and the arm 12-2 is moved away from its finger interception position 16.
  • FIGS. 2A to 2C represent an embodiment stop device according to the present invention in the Respective positions corresponding to Figures 1A to 1C.
  • FIGS. 1A to 1C we find the same elements as FIGS. 1A to 1C, or elements having identical functions, designated by the same references. This device works as described in relation to the previous figures. In the following description, we will not be interested only to details of the shape of the parts, which do not appear in Figures 1A to 1C.
  • Lever 3 has a U-shaped section reversed in the illustration Figures 2A to 2C and it is articulated on a plate 5 secured to the washing machine frame.
  • Shoe 1 is articulated on the side walls of lever 3 offset to the left relative to the center of the hoof which corresponds substantially in the center of the lever 3.
  • the upper arm 12-1 of the lever 12 comprises at its free end, as shown, a 12-3 heel extending to the right and pressing on cam 8. This arm 12-1 also includes a 12-4 extension to the left which is intended to actuate the switch 18 located above.
  • the lower arm 12-2 of the lever 12 comprises, at the level from its free end, a downward protrusion serving as support zone for the finger 16 secured to the drum 10.
  • Cam 8 which actuates lever 3 via of the connecting rod 7, is of cylindrical shape.
  • An indentation located at the rear of the cam 8 cooperates with the heel 12-3 of the lever 12 and plays the role of the flat 8-1 of the preceding figures.
  • a notch 8-2 located at the front of the cam 8 cooperates with a switch 22 to detect the position of this cam.
  • FIG. 2A corresponds to the rest position of the Figure 1A.
  • the lever 3 is in the high position and the shoe 1 is not not resting on the drum 10.
  • the cam 8 is at a position such that the heel 12-3 rests on a circular part of the cam and the notch 8-2 deactivates the switch 22.
  • the notch 8-2 cooperates with switch 22 to detect this position rest to stop a motor, not shown, drive of cam 8.
  • FIG. 2B corresponds to the active position of the Figure 1B.
  • Cam 8 has rotated 180 ° and indentation 8-1 is located opposite the heel 12-3 of the lever 12.
  • the lever 12 being clockwise biased by a spring not shown (such as a spiral spring arranged around the axis lever 12), heel 12-3 enters indentation 8-1 and end 12-2 of the lever lowers towards a position where it is likely to intercept finger 16.
  • a spring not shown such as a spiral spring arranged around the axis lever 12
  • Extension 12-4 of lever 12 operates the switch 18 which stops the motor of cam 8 and starts the motor drum 10.
  • the pressing force of the shoe 1 on the drum 10 is obtained by the spring 20 which is compressed by the lever 3.
  • the braking force caused by shoe 1 is chosen to be able to be defeated by the couple of drum motor 10. The drum 10 therefore starts to rotate slowly.
  • Figure 2C corresponds to the position of Figure 1C where finger 16 meets the free end of arm 12-2.
  • the lever 12 has turned in the opposite direction clockwise and its extension 12-4 has disabled the switch 18.
  • the drum motor 10 is stopped and the drum remains blocked in this position by shoe 1.
  • cam 8 When the stop device returns to its rest, the cam 8 is rotated until the notch 8-2 of cam 8 deactivates switch 22.
  • this shoe is preferably designed to press on a part integral with the drum located outside the tank in which is generally arranged the drum, such as the pulley or the drum drive belt. Finger 16 is then secured to the pulley.
  • switches 18 and 22 can be used to control the drive motors of the drum and cam 8 by a suitable programmer achievable by the skilled person.
  • the shoe material 1 If the shoe presses on the aforementioned belt, it can be metallic. If he presses a part metallic, its friction surface may be coated with a material commonly used in brakes, such as ferodo.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Braking Arrangements (AREA)

Description

La présente invention concerne les machines à laver et en particulier celles à chargement par le haut.The present invention relates to washing machines and especially those with top loading.

Pour charger ou décharger le tambour d'une machine à laver à chargement par le haut, il faut généralement faire tourner le tambour d'une position initiale vers une position où l'on peut accéder à une trappe du tambour. Cette opération de rotation du tambour nécessite un certain effort pour vaincre le balourd du tambour qui est particulièrement important si du linge contenu dans le tambour n'est pas essoré. Pendant le déchargement du tambour, celui-ci tend à retrouver sa position initiale et il faut donc le tenir en même temps qu'on le décharge. Si on le lâche malencontreusement pendant ces opérations, le tambour pourrait tourner avec sa trappe ouverte et du linge tomber au fond de la cuve.To load or unload the drum of a top load wash, usually spin the drum from an initial position to a position where can access a drum door. This rotation operation of the drum requires some effort to defeat the imbalance of the drum which is particularly important if laundry in the drum is not spun. During the unloading the drum, it tends to regain its position initial and must therefore be held at the same time as it is discharged. If you accidentally let go of it during these operations, the drum could spin with its door open and laundry falling at the bottom of the tank.

La demande de brevet allemand 3 310 279 décrit un dispositif permettant d'arrêter et maintenir un tambour de machine à laver en position trappe en haut à la fin ou lors d'une interruption d'un cycle de lavage. Lorsque la trappe est ouverte, un ressort tire sur un frein et sur un levier jusqu'à une position où le levier bute sur le tambour en empêchant le frein d'agir sur le tambour. Le tambour est alors entraíné en rotation jusqu'à ce que le levier plonge dans un évidement du tambour en permettant au frein d'agir sur le tambour sous l'action du ressort, tandis que le moteur du tambour est arrêté. Ainsi, le frein est amené à agir brusquement sur le tambour tandis que ce dernier tourne encore par inertie, ce qui provoque un choc brutal indésirable. Pour limiter ce choc, il est prévu une vitesse de rotation lente spécifique, ce qui rend le système plus complexe.German patent application 3,310,279 describes a device for stopping and maintaining a drum washing machine in the top hatch position at the end or when an interruption of a washing cycle. When the hatch is open, a spring pulls on a brake and a lever up a position where the lever abuts on the drum preventing the brake acting on the drum. The drum is then driven in rotation until the lever plunges into a recess in the drum allowing the brake to act on the drum under spring action while the drum motor is stopped. Thus, the brake is brought to act abruptly on the drum while the latter still rotates by inertia, which causes an unwanted brutal shock. To limit this shock, it a specific slow rotation speed is provided, which makes the more complex system.

Un objet de la présente invention est de prévoir un dispositif permettant d'arrêter un tambour de machine à laver en position trappe en haut à la fin ou lors d'une interruption d'un cycle de lavage. An object of the present invention is to provide a device for stopping a washing machine drum by hatch position at the top at the end or during an interruption of a wash cycle.

Un autre objet de la présente invention est de prévoir un tel dispositif permettant de maintenir le tambour en position trappe en haut pendant son déchargement.Another object of the present invention is to provide such a device for holding the drum in position hatch at the top during unloading.

Cet objet est atteint grâce à un dispositif d'arrêt comprenant un sabot qui est normalement à une position de repos haute permettant à un tambour de machine à laver d'effectuer librement des rotations. A la fin d'un cycle de rotations, le sabot est abaissé et plaqué contre le tambour pour frotter contre celui-ci en même temps que le moteur d'entraínement du tambour est remis en marche. Le moteur d'entraínement est suffisamment puissant pour entraíner en rotation le tambour malgré les forces de freinage du sabot. Lorsque le tambour arrive en position trappe en haut, un doigt solidaire du tambour actionne un mécanisme qui arrête le moteur. Alors, le tambour se retrouve bloqué par le sabot en position trappe en haut.This object is reached thanks to a stop device comprising a shoe which is normally in a rest position high allowing a washing machine drum to perform freely from rotations. At the end of a rotation cycle, the shoe is lowered and pressed against the drum to rub against it at the same time as the drive motor of the drum is restarted. The drive motor is sufficiently powerful to rotate the drum despite hoof braking forces. When the drum comes in hatch position at the top, a finger secured to the drum activates a mechanism that stops the engine. So the drum finds itself blocked by the shoe in the hatch position at the top.

La présente invention vise plus particulièrement un dispositif d'arrêt dans une position prédéterminée d'un tambour entraíné par un moteur pour effectuer des cycles de rotation autour d'un axe solidaire d'un bâti. Ce dispositif comprend : un frein mobile par rapport au bâti ; un levier détecteur articulé sur le bâti ; des moyens susceptibles d'amener le frein et le levier détecteur dans une position de repos ou dans une position active où le frein agit sur le tambour ou une pièce solidaire du tambour ; un doigt solidaire du tambour susceptible d'actionner le levier détecteur à la position active ; et des moyens coopérant avec le levier détecteur pour mettre en marche le moteur dans la position active et l'arrêter lorsque ledit levier est actionné par ledit doigt.The present invention relates more particularly to a stop device in a predetermined position of a drum driven by a motor to perform rotation cycles around an axis integral with a frame. This device includes: a brake movable relative to the frame; an articulated detector lever on the frame; means likely to bring the brake and the sensor lever in a rest position or in a position active where the brake acts on the drum or an integral part of the drum; a finger secured to the drum capable of actuating the detector lever in the active position; and cooperating means with the sensor lever to start the engine in the active position and stop it when said lever is actuated by said finger.

Selon un mode de réalisation de la présente invention, le frein est un frein à sabot monté sur un levier articulé à une extrémité sur le bâti et dont l'extrémité libre est actionnée par un système à bielle et manivelle.According to an embodiment of the present invention, the brake is a shoe brake mounted on a lever articulated to a end on the frame and whose free end is actuated by a connecting rod and crank system.

Selon un mode de réalisation de la présente invention, ladite manivelle comprend une came contre laquelle est sollicité un bras du levier détecteur, la came étant telle que, à la position de repos, un bras du levier se trouve en dehors de la trajectoire dudit doigt, et que, à la position active, le bras se trouve dans la trajectoire du doigt. According to an embodiment of the present invention, said crank comprises a cam against which is biased an arm of the detector lever, the cam being such that, at the position rest, one arm of the lever is outside the trajectory of said finger, and that, in the active position, the arm is in the path of the finger.

Selon un mode de réalisation de la présente invention, le levier détecteur coopère avec un interrupteur de mise en marche dudit moteur, le levier détecteur actionnant l'interrupteur dans ladite position active.According to an embodiment of the present invention, the detector lever cooperates with a setting switch operation of said motor, the detector lever actuating the switch in said active position.

Selon un mode de réalisation de la présente invention, la came comprend une indentation dans laquelle rentre un talon du levier détecteur dans la position active.According to an embodiment of the present invention, the cam includes an indentation into which a heel fits of the sensor lever in the active position.

Selon un mode de réalisation de la présente invention, la came comprend une encoche coopérant avec un deuxième interrupteur de détection de la position de la came.According to an embodiment of the present invention, the cam includes a notch cooperating with a second switch detection of the cam position.

Selon un mode de réalisation de la présente invention, le sabot est articulé sur le levier de façon excentrée et un ressort est disposé entre le levier et le sabot.According to an embodiment of the present invention, the shoe is articulated on the lever eccentrically and a spring is arranged between the lever and the shoe.

Ces objets, caractéristiques et avantages ainsi que d'autres de la présente invention seront exposés en détail dans la description suivante de modes de réalisation particuliers faite en relation avec les figures jointes parmi lesquelles :

  • les figures 1A à 1C représentent sous forme de schéma de principe trois positions d'un dispositif d'arrêt de tambour selon la présente invention ; et
  • les figures 2A à 2C représentent un mode de réalisation de dispositif d'arrêt selon la présente invention dans les positions respectives correspondant aux figures 1A à 1C.
    • These objects, characteristics and advantages as well as others of the present invention will be explained in detail in the following description of particular embodiments made in relation to the attached figures, among which:
  • Figures 1A to 1C show in block diagram three positions of a drum stop device according to the present invention; and
  • FIGS. 2A to 2C represent an embodiment of a stop device according to the present invention in the respective positions corresponding to FIGS. 1A to 1C.

    • Des termes tels que "supérieur", "inférieur", "gauche", "droite", ... sont utilisés par souci de clarté par rapport aux figures et ne doivent pas être considérés comme limitatifs, le dispositif selon l'invention pouvant être disposé selon toute autre orientation jugée convenable par l'homme du métier.Terms like "upper", "lower", "left", "straight", ... are used for clarity in relation to in the figures and should not be considered as limiting, the device according to the invention can be arranged according to any other orientation judged suitable by the skilled person.

    Un dispositif d'arrêt selon la présente invention représenté très schématiquement aux figures 1A à 1C comprend un frein constitué d'un sabot 1 solidaire d'un levier 3 sensiblement horizontal. L'extrémité gauche du levier 3 est articulé par rapport au bâti 5 de la machine à laver. Un système à bielle 7 et manivelle 8 agit sur l'extrémité droite du levier 3 pour plaquer ou non le sabot 1 sur un tambour 10 de machine à laver. A stop device according to the present invention shown very schematically in Figures 1A to 1C includes a brake consisting of a shoe 1 secured to a lever 3 substantially horizontal. The left end of lever 3 is articulated by compared to frame 5 of the washing machine. A rod system 7 and crank 8 acts on the right end of lever 3 to whether or not to press the shoe 1 on a washing machine drum 10.

    La manivelle 8 est en fait une came circulaire appuyant sur l'un, 12-1, des bras d'un levier 12 articulé sur le bâti à proximité de la partie inférieure de la came 8. Le bras 12-1 s'étend vers le haut et la gauche et le levier 12 comprend un autre bras 12-2 s'étendant vers le bas et la droite jusqu'au voisinage du tambour 10. Le bras 12-1 est sollicité dans le sens des aiguilles d'une montre vers la came 8 par un ressort 14 disposé entre l'extrémité libre du bras 12-1 et le bâti.The crank 8 is in fact a circular cam pressing on one, 12-1, of the arms of a lever 12 articulated on the built near the lower part of the cam 8. The arm 12-1 extends up and left and the lever 12 includes another arm 12-2 extending down and to the right up to vicinity of the drum 10. The arm 12-1 is biased in the direction clockwise to cam 8 by spring 14 disposed between the free end of the arm 12-1 and the frame.

    La position de la figure lA correspond à la position de repos du dispositif d'arrêt selon l'invention. Le levier 3 est dans une position haute et le sabot 1 n'appuie pas sur le tambour 10. Le bras 12-1 appuie sur une partie circulaire de la came 8 et le bras 12-2 est dans une position levée où son extrémité libre est en dehors de la trajectoire d'un doigt 16 solidaire du tambour 10. Dans cette position, le tambour 10 effectue librement des rotations.The position of figure lA corresponds to the position rest of the stop device according to the invention. Leverage 3 is in a high position and shoe 1 does not press on the drum 10. The arm 12-1 presses on a circular part of the cam 8 and arm 12-2 is in a raised position where its end free is outside the trajectory of an integral finger 16 of the drum 10. In this position, the drum 10 performs freely from rotations.

    Lors de l'arrêt d'un cycle de rotations, que ce soit à la fin d'un cycle ou lors d'une interruption volontaire, la came 8 est mise en rotation dans le sens des aiguilles d'une montre. En tournant, cette came 8 abaisse le levier 3 et plaque le sabot 1 contre le tambour 10.When stopping a rotation cycle, whether at at the end of a cycle or during a voluntary interruption, the cam 8 is rotated clockwise. By turning, this cam 8 lowers the lever 3 and presses the shoe 1 against the drum 10.

    La figure 1B correspond à une position active du dispositif d'arrêt. La came 8 a tourné de 180° par rapport à la position de la figure 1A et a entraíné le blocage du tambour 10 par le sabot 1. Le bras 12-1 se trouve en appui contre un méplat 8-1 de la came 8, ce qui a provoqué une rotation dans le sens des aiguilles d'une montre du levier 12 par rapport à la position de la figure 1A.FIG. 1B corresponds to an active position of the device stop. Cam 8 has rotated 180 ° relative to the position of Figure 1A and resulted in the blocking of the drum 10 by shoe 1. Arm 12-1 is in contact with a flat 8-1 of cam 8, which caused a rotation in the direction clockwise lever 12 relative to position of Figure 1A.

    Dans cette position, le bras 12-1 active un interrupteur 18 et l'extrémité libre du bras 12-2 se trouve dans la trajectoire du doigt 16. Le profil de l'extrémité libre du bras 12-2 est tel, comme cela est représenté dans les figures, que le doigt 16 puisse lever cette extrémité quel que soit le sens de rotation du tambour. L'interrupteur 18 provoque l'arrêt de la rotation de la came 8 et met en marche le moteur d'entraínement du tambour 10 dans le sens des aiguilles d'une montre ou en sens inverse. Le tambour 10 est freiné par le sabot 1 mais le coefficient de frottement de ce sabot est choisi de sorte que le moteur puisse vaincre les forces de frottement.In this position, the arm 12-1 activates a switch 18 and the free end of the arm 12-2 is in the trajectory of finger 16. The profile of the free end of the arm 12-2 is such, as shown in the figures, that the finger 16 can lift this end regardless of the direction of drum rotation. Switch 18 causes the rotation of the cam 8 and starts the drive motor drum 10 clockwise or clockwise reverse. Drum 10 is braked by shoe 1 but the coefficient friction of this shoe is chosen so that the motor can overcome friction forces.

    Ainsi, le tambour 10 se met à tourner lentement et à un instant donné le doigt 16 rencontre l'extrémité libre du bras 12-2. Alors, le levier 12 est entraíné par le doigt dans le sens contraire des aiguilles d'une montre. La vitesse de rotation du tambour est choisie lente afin que l'énergie cinétique du tambour soit suffisamment faible pour que, après désactivation de l'interrupteur 18, le tambour s'arrête dans un angle tel que le doigt 16 maintienne toujours levé le bras 12-2.Thus, the drum 10 starts to rotate slowly and at a given instant finger 16 meets the free end of the arm 12-2. Then, the lever 12 is driven by the finger in the direction counterclockwise. The rotation speed of the drum is chosen slow so that the kinetic energy of the drum is low enough that after deactivating switch 18, the drum stops at an angle such that the finger 16 always keeps arm 12-2 up.

    La figure 1C représente le dispositif d'arrêt à un instant postérieur à la rencontre du doigt 16 avec l'extrémité libre du bras 12-2. En tournant, le bras 12-1 du levier 12 s'est éloigné de l'interrupteur 18 et a désactivé celui-ci. Ainsi, le moteur d'entraínement du tambour 10 s'arrête et le tambour reste bloqué par le sabot 1 dans cette position. Bien entendu, on fait correspondre à cette position la position trappe en haut du tambour 10.Figure 1C shows the stop device at a instant after finger 16 meets the end free arm 12-2. By turning, the arm 12-1 of the lever 12 has away from switch 18 and deactivated it. So the drum drive motor 10 stops and the drum remains blocked by shoe 1 in this position. Of course, we do match this position the hatch position at the top of the drum 10.

    Lorsqu'on commence un nouveau cycle de rotations, la came 8 est remise en rotation dans le sens des aiguilles d'une montre afin qu'elle rejoigne sa position initiale de la figure 1A où le tambour 10 est débloqué et le bras 12-2 est écarté de sa position d'interception du doigt 16.When starting a new rotation cycle, the cam 8 is rotated clockwise shows so that it returns to its initial position of the figure 1A where the drum 10 is unlocked and the arm 12-2 is moved away from its finger interception position 16.

    Les figures 2A à 2C représentent un mode de réalisation de dispositif d'arrêt selon la présente invention dans les positions respectives correspondant aux figures 1A à 1C. Dans les figures 2A à 2C, on retrouve des mêmes éléments qu'aux figures 1A à 1C, ou des éléments ayant des fonctions identiques, désignés par des mêmes références. Ce dispositif fonctionne comme cela a été décrit en relation avec les figures précédentes. Dans la suite de la description, on ne s'intéressera qu'à des détails de forme des pièces, n'apparaissant pas dans les figures 1A à 1C.FIGS. 2A to 2C represent an embodiment stop device according to the present invention in the Respective positions corresponding to Figures 1A to 1C. In Figures 2A to 2C, we find the same elements as FIGS. 1A to 1C, or elements having identical functions, designated by the same references. This device works as described in relation to the previous figures. In the following description, we will not be interested only to details of the shape of the parts, which do not appear in Figures 1A to 1C.

    Le levier 3 est à section en U renversé dans la représentation des figures 2A à 2C et il est articulé sur une plaque 5 solidaire du bâti de la machine à laver. Le sabot 1 est articulé sur les parois latérales du levier 3 en déport vers la gauche par rapport au centre du sabot qui correspond sensiblement au centre du levier 3. Un ressort 20 disposé entre le fond du levier 3 et la face supérieure du sabot 1 au niveau de la partie centrale du sabot, sollicite ce sabot dans le sens des aiguilles d'une montre.Lever 3 has a U-shaped section reversed in the illustration Figures 2A to 2C and it is articulated on a plate 5 secured to the washing machine frame. Shoe 1 is articulated on the side walls of lever 3 offset to the left relative to the center of the hoof which corresponds substantially in the center of the lever 3. A spring 20 disposed between the bottom lever 3 and the upper face of shoe 1 at the central part of the hoof, requests this hoof in the direction of Clockwise.

    Le bras supérieur 12-1 du levier 12 comprend à son extrémité libre, comme cela est représenté, un talon 12-3 s'étendant vers la droite et appuyant sur la came 8. Ce bras 12-1 comprend également une extension 12-4 vers la gauche qui est destinée à actionner l'interrupteur 18 se trouvant au-dessus. Le bras inférieur 12-2 du levier 12 comprend, au niveau de son extrémité libre, une protubérance vers le bas servant de zone d'appui pour le doigt 16 solidaire du tambour 10.The upper arm 12-1 of the lever 12 comprises at its free end, as shown, a 12-3 heel extending to the right and pressing on cam 8. This arm 12-1 also includes a 12-4 extension to the left which is intended to actuate the switch 18 located above. The lower arm 12-2 of the lever 12 comprises, at the level from its free end, a downward protrusion serving as support zone for the finger 16 secured to the drum 10.

    La came 8, qui actionne le levier 3 par l'intermédiaire de la bielle 7, est de forme cylindrique. Une indentation située à l'arrière de la came 8 coopère avec le talon 12-3 du levier 12 et joue le rôle du méplat 8-1 des figures précédentes. Une encoche 8-2 située à l'avant de la came 8 coopère avec un interrupteur 22 pour détecter la position de cette came.Cam 8, which actuates lever 3 via of the connecting rod 7, is of cylindrical shape. An indentation located at the rear of the cam 8 cooperates with the heel 12-3 of the lever 12 and plays the role of the flat 8-1 of the preceding figures. A notch 8-2 located at the front of the cam 8 cooperates with a switch 22 to detect the position of this cam.

    La figure 2A correspond à la position de repos de la figure 1A. Le levier 3 est en position haute et le sabot 1 n'est pas en appui sur le tambour 10. La came 8 est à une position telle que le talon 12-3 appuie sur une partie circulaire de la came et que l'encoche 8-2 désactive l'interrupteur 22. L'encoche 8-2 coopère avec l'interrupteur 22 pour détecter cette position de repos afin d'arrêter un moteur, non représenté, d'entraínement de la came 8. FIG. 2A corresponds to the rest position of the Figure 1A. The lever 3 is in the high position and the shoe 1 is not not resting on the drum 10. The cam 8 is at a position such that the heel 12-3 rests on a circular part of the cam and the notch 8-2 deactivates the switch 22. The notch 8-2 cooperates with switch 22 to detect this position rest to stop a motor, not shown, drive of cam 8.

    La figure 2B correspond à la position active de la figure 1B. La came 8 a tourné de 180° et l'indentation 8-1 se trouve en face du talon 12-3 du levier 12. Le levier 12 étant sollicité dans le sens des aiguilles d'une montre par un ressort non représenté (tel qu'un ressort spiral disposé autour de l'axe d'articulation du levier 12 ), le talon 12-3 pénètre dans l'indentation 8-1 et l'extrémité 12-2 du levier s'abaisse vers une position où elle est susceptible d'intercepter le doigt 16.FIG. 2B corresponds to the active position of the Figure 1B. Cam 8 has rotated 180 ° and indentation 8-1 is located opposite the heel 12-3 of the lever 12. The lever 12 being clockwise biased by a spring not shown (such as a spiral spring arranged around the axis lever 12), heel 12-3 enters indentation 8-1 and end 12-2 of the lever lowers towards a position where it is likely to intercept finger 16.

    L'extension 12-4 du levier 12 actionne l'interrupteur 18 qui arrête le moteur de la came 8 et met en marche le moteur du tambour 10.Extension 12-4 of lever 12 operates the switch 18 which stops the motor of cam 8 and starts the motor drum 10.

    L'effort de plaquage du sabot 1 sur le tambour 10 est obtenu par le ressort 20 qui est comprimé par le levier 3. Comme on l'a précédemment mentionné, l'effort de freinage provoqué par le sabot 1 est choisi pour pouvoir être vaincu par le couple du moteur du tambour 10. Le tambour 10 se met donc à tourner lentement.The pressing force of the shoe 1 on the drum 10 is obtained by the spring 20 which is compressed by the lever 3. As as previously mentioned, the braking force caused by shoe 1 is chosen to be able to be defeated by the couple of drum motor 10. The drum 10 therefore starts to rotate slowly.

    La figure 2C correspond à la position de la figure 1C où le doigt 16 rencontre l'extrémité libre du bras 12-2. Dans cette position, le levier 12 a tourné dans le sens contraire des aiguilles d'une montre et son extension 12-4 a désactivé l'interrupteur 18. Le moteur du tambour 10 est arrêté et le tambour reste bloqué dans cette position par le sabot 1.Figure 2C corresponds to the position of Figure 1C where finger 16 meets the free end of arm 12-2. In this position, the lever 12 has turned in the opposite direction clockwise and its extension 12-4 has disabled the switch 18. The drum motor 10 is stopped and the drum remains blocked in this position by shoe 1.

    Lorsque le dispositif d'arrêt reprend sa position de repos, la came 8 est mise en rotation jusqu'à ce que l'encoche 8-2 de la came 8 désactive l'interrupteur 22.When the stop device returns to its rest, the cam 8 is rotated until the notch 8-2 of cam 8 deactivates switch 22.

    On a supposé pour simplifier dans ce qui précède que le sabot appuyait sur le tambour de la machine à laver. Bien entendu, ce sabot est de préférence prévu pour appuyer sur une partie solidaire du tambour se trouvant hors de la cuve dans laquelle est généralement disposé le tambour, telle que la poulie ou la courroie d'entraínement du tambour. Le doigt 16 est alors solidaire de la poulie. It has been assumed for simplicity in the above that the hoof was pressing on the drum of the washing machine. Good heard, this shoe is preferably designed to press on a part integral with the drum located outside the tank in which is generally arranged the drum, such as the pulley or the drum drive belt. Finger 16 is then secured to the pulley.

    Les informations des interrupteurs 18 et 22 peuvent être exploitées pour commander les moteurs d'entraínement du tambour et de la came 8 par un programmateur adéquat réalisable par l'homme du métier.The information of switches 18 and 22 can be used to control the drive motors of the drum and cam 8 by a suitable programmer achievable by the skilled person.

    L'homme du métier pourra choisir convenablement le matériau du sabot 1. Si le sabot appuie sur la courroie susmentionnée, il pourra être métallique. S'il appuie sur une partie métallique, sa surface en frottement pourra être revêtue d'un matériau couramment utilisé dans les freins, tel que du ferodo.Those skilled in the art will be able to choose the shoe material 1. If the shoe presses on the aforementioned belt, it can be metallic. If he presses a part metallic, its friction surface may be coated with a material commonly used in brakes, such as ferodo.

    De nombreuses solutions techniques différentes apparaítront à l'homme du métier pour réaliser les fonctions décrites.Many different technical solutions will appear to those skilled in the art to perform the functions described.

    Claims (4)

    1. A device for stopping a drum (10) driven by a motor in a predetermined position, including means (8, 18) for, at the end of a cycle, bringing a brake (1, 3) to a braking position and a detector lever (12) to an interception position of a pin (16) integral with the drum while the motor is started, the motor being stopped when the lever is engaged by the pin.
    2. The device of claim 1, characterized in that the brake (1, 3) is a brake with a shoe (1) assembled on a lever (3) articulated by one end to the frame and the free end of which is operated by a crank (8) and lever (7) system.
    3. The device of claim 2, characterized in that the crank (8) includes a cam against which an arm (12-1) of the detector lever (12) is urged, the cam being such that, in the idle position, an arm (12-2) of the lever is located outside the trajectory of the pin (16) and that, in the active position, the arm is located on the trajectory of the pin.
    4. The device of claim 1, characterized in that the detector lever (12) cooperates with a switch (18) for starting the motor, the detector lever operating the switch in the braking position.
    EP93420003A 1992-01-07 1993-01-05 Device for stopping the drum Expired - Lifetime EP0551238B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9200226 1992-01-07
    FR9200226A FR2685927B1 (en) 1992-01-07 1992-01-07 DRUM STOPPING DEVICE.

    Publications (2)

    Publication Number Publication Date
    EP0551238A1 EP0551238A1 (en) 1993-07-14
    EP0551238B1 true EP0551238B1 (en) 1998-07-29

    Family

    ID=9425537

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP93420003A Expired - Lifetime EP0551238B1 (en) 1992-01-07 1993-01-05 Device for stopping the drum

    Country Status (3)

    Country Link
    EP (1) EP0551238B1 (en)
    DE (1) DE69319934T2 (en)
    FR (1) FR2685927B1 (en)

    Family Cites Families (4)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    NL7515001A (en) * 1975-01-17 1976-07-20 Bosch Siemens Hausgeraete DEVICE FOR OBTAINING AN ACCURATELY REPEATING PARKING POSITION OF A WASHING TREATMENT MACHINE DRUM.
    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
    IT1218255B (en) * 1988-06-17 1990-04-12 Smeg Spa AUTOMATIC LOCKING DEVICE IN A PREFIXED POSITION OF THE WASHING MACHINE WASHING BASKET
    FR2649730B1 (en) * 1989-07-11 1991-10-11 Ire Ind Reunies Electromenager WASHING MACHINE WITH DRUM POSITIONING

    Also Published As

    Publication number Publication date
    FR2685927B1 (en) 1995-05-05
    DE69319934D1 (en) 1998-09-03
    EP0551238A1 (en) 1993-07-14
    DE69319934T2 (en) 1999-04-22
    FR2685927A1 (en) 1993-07-09

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