EP1842950B1 - Bearing for a laundry washing and/or drying machine - Google Patents

Bearing for a laundry washing and/or drying machine Download PDF

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Publication number
EP1842950B1
EP1842950B1 EP07104733A EP07104733A EP1842950B1 EP 1842950 B1 EP1842950 B1 EP 1842950B1 EP 07104733 A EP07104733 A EP 07104733A EP 07104733 A EP07104733 A EP 07104733A EP 1842950 B1 EP1842950 B1 EP 1842950B1
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EP
European Patent Office
Prior art keywords
bearing
friction ring
bearing device
drum
drying machine
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EP07104733A
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German (de)
French (fr)
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EP1842950A1 (en
Inventor
Hervé Pont
Sébastien Delvalac
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FagorBrandt SAS
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FagorBrandt SAS
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Priority to PL07104733T priority Critical patent/PL1842950T3/en
Publication of EP1842950A1 publication Critical patent/EP1842950A1/en
Application granted granted Critical
Publication of EP1842950B1 publication Critical patent/EP1842950B1/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

Definitions

  • the present invention relates to a bearing device.
  • the present invention generally relates to a washing machine and / or drying laundry equipped with such a bearing device.
  • This washing machine and / or drying the laundry comprises a tank in which is housed a drum for containing the laundry. This drum is rotated inside the wash tub by a drive device.
  • the present invention relates to a bearing device for driving in rotation of a washing machine drum and / or drying the laundry and aims to obtain a compact bearing device and directly exploitable for its mounting.
  • Said bearing device is designed to separate the friction track from a seal of the drive shaft in rotation of the drum.
  • the object of the present invention is to protect the grease of the seal as soon as the seal is deconditioned and mounted on the bearing device as well as during the life of said bearing device.
  • disassembly and reassembly of the assembly comprising a seal and a friction ring is easy from the outside of the washing machine and / or drying the laundry and without dewatering of said machine.
  • the bearing device comprises a radial contact sealing gasket on an intermediate ring mounted in force on a rotational drive axis of the drum of the washing machine.
  • the friction rings are integral with said drive shaft in rotation of the drum and are not removable.
  • the rotational axis of rotation of the drum is included in a drive part of the drum which may be designated by the term spider.
  • the friction ring is mounted by means of a press on the drive axis in rotation of the drum.
  • washing machines have the disadvantage of having a friction ring integral with the drive axis in rotation of the drum and does not allow easy replacement of the torque seal and friction ring, especially in case of wear.
  • the grease of the seal is not protected against possible pollution from its deconditioning for mounting on the drum bearing device and until the washing of the washing machine and / or drying the laundry when of his assembly on a production line.
  • the friction ring must be mounted in force and requires equipment adapted to this type of operation during manufacture.
  • the present invention aims to solve the aforementioned drawbacks and propose a washing machine and / or dryer with a bearing device to ensure a simple and reliable assembly.
  • the friction ring is not integral with the rotational drive axis of the drum and can easily replace the seal and friction ring torque.
  • the seal grease is protected as soon as it is put in place and until the bearing device is assembled on the washing machine and / or the laundry is dried. Disassembly of the bearing device is easy during an intervention of the after-sales service of the manufacturer of said machine.
  • the friction ring of the bearing device is thin and stainless steel. In this way, the cost of obtaining the bearing device is minimized and allows quick and inexpensive after-sales service interventions.
  • Such a bearing device is made in the form of a set ready to mount on a washing machine and / or tumble dry and requiring a small footprint.
  • the present invention is directed to a bearing device for a washing machine and / or drying laundry comprising at least one bearing housing assembled with a bearing block, a seal slid on a friction ring, the friction ring assembly and seal being force-fitted into the bearing block, and said device being connected to a portion of a washing tub of the machine, said washing tub enclosing a drum, said drum comprising at least one driving means fixed on at least one flange of said drum, said at least one driving means comprising an axis inserted inside the bearing housing.
  • the bearing device for a washing machine and / or drying the laundry comprises the friction ring slidably mounted on a bearing of said at least one drive means of the drum.
  • the friction ring comprises at least one shoulder positioned between the bearing housing and the at least one drive means of the drum.
  • the sealing of said device is ensured by the pressurization of the bearing housing on said at least one shoulder of the friction ring.
  • the pressurization of the bearing housing on the at least one shoulder of the friction ring sealing said device is performed by screwing means
  • the friction ring comprises a stop limiting the translational movement of said friction ring between the bearing housing and a wall of the bearing block. Said stop facilitates the mounting of the bearing device and provides an assembly from which no part can escape before mounting it on the washing machine and / or tumble dry.
  • the friction track of the seal on the friction ring extends between said at least one shoulder and the abutment of said friction ring.
  • the friction ring is centered on the seal within a housing of the bearing block.
  • a functional clearance J is provided between an inner diameter of the friction ring and the bearing surface of the at least one drum drive means.
  • a pulley is centered on the axis of said at least one drive means of the drum and fixed by screwing means.
  • the seal may be of the radial contact type.
  • the seal comprises two radial contact lips for accommodating grease and rubbing against the friction ring.
  • the seal comprises at least one annular spring and an overmolded metal structure.
  • the seal may be of the V-ring type.
  • the use of such a seal makes it possible to create a frontal contact. In this configuration, the friction ring must be adapted to rub the seal on the shoulder of said friction ring and no longer on the cylindrical surface of said friction ring.
  • Said bearing device is overmoulded in the washing tub.
  • the bearing housing is fixed to the bearing block by screwing means.
  • the friction ring is made of a stainless steel material.
  • the friction ring is made of stamping and has a small thickness.
  • This washing machine 30 is of the top loading type. In this way, this machine 30 is adapted to wash the laundry and possibly to dry it.
  • This washing machine 30 comprises a bodywork 31 comprising an access opening inside the bodywork 31.
  • this access opening is made in an upper portion 32 of the bodywork 31, and in this example, in an upper plane of the bodywork 31.
  • An access door 33 is adapted to close this opening of the body 31 of the machine 30, in particular during operation thereof.
  • the access door 33 is pivotally mounted about an axis of rotation integral with the bodywork 31 of the machine 30.
  • the body 31 of the machine 30 is adapted to house a washing tub 8 which is adapted in particular to contain the different washing and rinsing baths.
  • the drum 11 is thus rotatably mounted about a horizontal axis 14.
  • FIG. 1 is schematic and that many organs necessary for the operation of the machine (and for example engine, pumps, filters, ...) have been omitted and do not need to be described in detail here.
  • a washing machine 30 comprises at least one bearing device 34 for rotating the drum 11 inside the washing tub 8.
  • the washing machine 30 illustrated in FIG. figure 1 comprises two bearing devices 34 so as to balance the stresses exerted on said bearing devices 34 during driving in rotation of the drum 11.
  • Each bearing device 34 is disposed opposite a drum flange 13 11.
  • the bearing device 34 for a washing machine and / or drying machine 30 comprises at least one bearing housing 5 assembled with a bearing block 4, a seal 2 slid on a friction ring 1, the ring assembly 1 and the seal 2 being force-fitted into the bearing block 4.
  • Said device 34 is connected to a portion of a washing tub 8 of the machine 30, said washing tub 8 enclosing a drum 11, said drum 11 comprising at least one driving means 3 fixed on at least one flange 13 of said drum 11, said at least one driving means 3 comprising an axle 14 fitting into the inside of the bearing housing 5.
  • the bearing block 4 of the bearing device 34 is the main structural element on which the components of this bearing device 34 are assembled.
  • the assembly of the seal 2 and the friction ring 1 can be assembled with the aid of FIG. a press in said bearing block 4 during assembly by the manufacturer.
  • the bearing block 4 comprises at least three housings 27 allowing the positioning of at least three lugs 28 formed on the bearing housing 5. In this way, the bearing housing 5 is centered and locked in rotation inside the block bearing 4.
  • the bearing block 4 comprises at least one crenellated rib 35 on its outer periphery for assembling said bearing block 4 in the washing tub 8, assembling the bearing block 4 with the washing tub 8 can be made by overmolding.
  • the bearing housing 5 consists of a housing made of sheet metal and at least one bearing ensuring the kinematic connection pivot between the drum 11 and the washing tub 8.
  • the bearing housing 5 transmits the forces generated by the rotation of the drum 11 and the unbalance of the drum 11 to the bearing block 4.
  • Said housing comprises two half-shells 36. Said two half-shells 36 enclose said at least one bearing 37 so as to form a groove-shaped housing.
  • the seal 2 contributes to the sealing of the bearing device 34.
  • the friction ring 1 is slidably mounted on a bearing surface 16 of the at least one driving means 3 of the drum 11.
  • the friction ring 1 comprises a stop 17 limiting the displacement in translation of said friction ring 1 between the bearing housing 5 and a wall 10 of the bearing block 4. In this way, the stop 17 of the friction ring 1 prevents it to escape in translation from the bearing device 34.
  • the bearing housing 5 is supported on a surface 22 of a housing 23 of the bearing block 4. Then, the bearing housing 5 is fixed to the bearing block 4 by screwing means 18. The bearing housing 5 is blocked by at least three screws passing through at least three smooth holes in said bearing housing 5 and said at least three self-tapping type screws creating the screw threads by deformation in at least three smooth holes made in the bearing block 4 .
  • Said at least three smooth holes of the bearing housing 5 are formed in said at least three lugs 28 of said bearing housing 5.
  • Said at least three threaded holes of the bearing block 4 are made in said at least three housings 27 of said bearing block 4.
  • Said bearing device 34 is overmoulded in the washing tub 8.
  • a first bearing device 34 is overmolded directly into a sidewall of the washing tub 8 and a second bearing device 34 is overmolded in a lid of the washing tub 8.
  • Two drive means 3 of the drum are fixed in the flanges 13 of the drum 11.
  • the axis 14 of the drive means 3 of the drum 11 is centered in the bearing housing 5 of the bearing device 34.
  • a functional clearance J is designed between an inside diameter of the friction ring 1 and the bearing surface 16 of the at least one driving means 3 of the drum 11.
  • the drum 11 is in position when the friction ring 1 is stacked axially between the drive means 3 of said drum 11 and the inner ring of the bearing housing 5.
  • a pulley 7 is centered on the axis 14 of the at least one driving means 3 of the drum 11 and fixed by screwing means 6.
  • the pulley 7 is in position when the latter bears an inner ring of the housing of
  • the screwing means 6 connect the pulley 7 to the axis 14 of the drive means 3 of the drum 11.
  • the screwing means 6 comprise a bearing surface 9 coming into contact with an outer surface of the pulley 7. .
  • the second bearing device 34 mounted on the lid of the washing tub 8 also comprises screwing means 6 installed on the drive means 3 of the drum 11 and bearing directly on the inner ring of the bearing housing 5.
  • the second bearing device 34 is not connected to a pulley 7 driving the drum 11 in rotation.
  • the seal 2 is of the radial contact type.
  • the seal 2 comprises two radial contact lips 20 for accommodating grease and rubbing on the friction ring 1. This seal 2 serves to remove the passage of liquid and dust.
  • the seal 2 comprises at least one annular spring and an overmolded metal structure.
  • the friction ring 1 comprises a friction track for the lips of the seal 2 and also contributes to the sealing of the bearing device 34. Said friction ring 1 protects the grease of the seal 2 as soon as the deconditioning of the the assembly constituted by these two elements for mounting the latter in the bearing device 34.
  • the friction ring 1 comprises at least one shoulder 15 positioned between the bearing housing 5 and the at least one drive means 5 of the drum 11.
  • the shoulder 15 of the friction ring 1 comprises an opening 26 at its center to allow the passage of the axis 14 of the drive means 3 of the drum 11 through said opening 26.
  • This shoulder 15 contributes to the sealing of the bearing device 34.
  • the seal is achieved by the metal-on-metal contact of the bearing housing 5 on the shoulder 15 of the friction ring 1 and the shoulder 15 of the ring 1 on the bearing surface 16 of the drive means 3 of the drum 11.
  • the sealing is ensured by the pressure exerted by the face means 6 on the bearing housing 5, the shoulder 15 of the friction ring 1 and the bearing 16 of the driving means 3 of the drum 11.
  • the bearing device 34 makes it possible to seal the water in liquid or vapor form from the inside of the washing tub 8 to the housing of the washing machine and / or to dry the laundry.
  • the sealing of said bearing device 34 is ensured by putting the bearing housing 5 under pressure on said at least one shoulder 15 of the friction ring 1.
  • the pressurization of the bearing housing 5 on said at least one shoulder 15 of the friction ring 1 sealing said device is performed by screwing means 6.
  • the friction ring 1 is centered on the seal 2 inside a housing 21 of the bearing block 4.
  • the sealing of the bearing device 34 is provided between two independent sets of which a first set is fixed and a second set is movable.
  • the fixed assembly comprises the washing tub 8 and its cover, the bearing block 4, the bearing housing 5 and the seal 2.
  • the moving assembly comprises the drum 11, the driving means 3 of the drum 11, the friction ring 1 and the pulley 7 with the screwing means 6.
  • the bearing device 34 fills a first static seal between the bearing block 4 and the seal 2.
  • the seal 2 is force-fitted into the bearing block 4 to eliminate any leakage of water between the outer periphery of the bearing block seal 2 and the housing 21 of the bearing block 4 adapted to receive said seal 2.
  • the bearing device 34 fills a second static seal between the friction ring 1 and the drive means 3 of the drum 11.
  • a functional clearance J is required between the inner diameter of the friction ring 1 and the bearing surface 16 of the friction ring 1.
  • drive means 3 of the drum 11 and the water can seep into this space. This quantity of water can not infiltrate further into the bearing device 34 by axial clamping of the shoulder 15 of the friction ring 1 between the bearing surface 16 of the drive means 3 of the drum 11 and the inner ring of the bearing housing 5 by the screwing means 6.
  • the axial clamping is ensured in particular by the clean surface conditions of the faces in abutment with the bearing surface 16 of the drive means 3 of the drum 11, the shoulder 15 of the bushing 1 and the inner ring of the bearing housing 5 involved in the stack of the bearing device 34.
  • the roughness of said bearing faces is of medium quality and does not require grinding operations or other processing operations for guarantee the tightness. Sealing is ensured by the metal-to-metal contact and under mechanical stress of said elements mentioned above.
  • the material of the bearing surface 16 is preferably aluminum.
  • the contact pressure is sufficiently high to guard the soft material of the bearing surface 16 which is aluminum and thus to form a seal of the bearing device 34.
  • the bearing device 34 also performs a dynamic seal between the seal 2 and the friction ring 1.
  • the seal 2 comprising two lips 20 rubs on the friction track located on the outer cylindrical portion of the seal ring. friction 1. In this way, the passage of water is blocked.
  • the friction track 19 of the seal 2 on the friction ring 1 extends between said at least one shoulder 15 and the abutment 17 of said friction ring 1.
  • the friction ring 1 is made of a stainless steel material.
  • the friction ring 1 can be made either by stamping or burnishing and in this way the cost of obtaining the latter can be reduced.
  • the bearing device 34 makes it possible to produce a friction ring 1 of less precision than the friction rings known in the state of the art. Said friction ring 1 does not need to be machined then to be ground or treated to obtain a surface condition of low roughness.
  • the disassembly of this bearing device 34 during a service intervention is made easy by the friction ring 1 slidably mounted on the bearing surface 16 of the at least one drive means 3 of the drum 11.
  • the disassembly of the bearing 34 can replace the bearing housing 5 and / or the friction ring 1 and / or the seal 2.
  • the seal 2 is of the V-ring type.
  • the friction ring 1 is not centered by the seal 2 since the contact for sealing is of the frontal type.
  • the bearing block 4 and the friction ring 1 are adapted to this type of seal 2.
  • the seal 2 rubs on a friction track made by a disc 24 placed around the cylindrical portion of the friction ring 1. Said disc 24 is supported on the bearing housing 5 and a shoulder 25 formed in the housing 21 of the bearing block 4.
  • the inner diameter of the disc 24 is greater than the outer diameter of the friction ring 1 so not to create friction.

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

Description

La présente invention concerne un dispositif de palier.The present invention relates to a bearing device.

La présente invention concerne de manière générale une machine à laver et / ou sécher le linge équipée d'un tel dispositif de palier. Cette machine à laver et / ou sécher le linge comprend une cuve dans laquelle est logé un tambour destiné à contenir le linge. Ce tambour est entraîné en rotation à l'intérieur de la cuve de lavage par un dispositif d'entraînement.The present invention generally relates to a washing machine and / or drying laundry equipped with such a bearing device. This washing machine and / or drying the laundry comprises a tank in which is housed a drum for containing the laundry. This drum is rotated inside the wash tub by a drive device.

On connaît déjà le document FR 1 535 332 A qui décrit une machine à laver le linge comprenant un dispositif de palier, une cuve dans laquelle est logé un tambour destiné à contenir le linge, le tambour étant entraîné en rotation à l'intérieur de la cuve de lavage par un dispositif d'entraînement.We already know the document FR 1 535 332 A which discloses a washing machine comprising a bearing device, a vessel in which is housed a drum for containing the laundry, the drum being rotated inside the washing tub by a driving device.

La présente invention concerne un dispositif de palier pour l'entraînement en rotation d'un tambour de machine à laver et / ou sécher le linge et a pour but d'obtenir un dispositif de palier compact et directement exploitable pour son montage.The present invention relates to a bearing device for driving in rotation of a washing machine drum and / or drying the laundry and aims to obtain a compact bearing device and directly exploitable for its mounting.

Ledit dispositif de palier est conçu de manière à dissocier la piste de frottement d'un joint d'étanchéité de l'axe d'entraînement en rotation du tambour.Said bearing device is designed to separate the friction track from a seal of the drive shaft in rotation of the drum.

En outre, la présente invention a pour but de protéger la graisse du joint d'étanchéité dès le déconditionnement dudit joint d'étanchéité et son montage sur le dispositif de palier ainsi qu'au cours de la vie dudit dispositif de palier.In addition, the object of the present invention is to protect the grease of the seal as soon as the seal is deconditioned and mounted on the bearing device as well as during the life of said bearing device.

Par ailleurs, le démontage et le remontage de l'ensemble comportant un joint d'étanchéité et une bague de frottement est aisé depuis l'extérieur de la machine à laver et / ou sécher le linge et sans décuvage de ladite machine.Furthermore, disassembly and reassembly of the assembly comprising a seal and a friction ring is easy from the outside of the washing machine and / or drying the laundry and without dewatering of said machine.

Dans les machines à laver le linge connues, le dispositif de palier comprend un joint d'étanchéité à contact radial frottant sur une bague intermédiaire montée en force sur un axe d'entraînement en rotation du tambour de la machine à laver le linge. Les bagues de frottement sont solidaires dudit arbre d'entraînement en rotation du tambour et ne sont pas démontables. L'axe d'entraînement en rotation du tambour est compris dans une pièce d'entraînement du tambour pouvant être désignée par le terme croisillon. La bague de frottement est montée à l'aide d'une presse sur l'axe d'entraînement en rotation du tambour. Ces bagues de forte épaisseur sont usinées et rectifiées afin d'obtenir un état de surface peu rugueux et parfois traitées. En outre, ces bagues de frottement sont réalisées en laiton.In known laundry machines, the bearing device comprises a radial contact sealing gasket on an intermediate ring mounted in force on a rotational drive axis of the drum of the washing machine. The friction rings are integral with said drive shaft in rotation of the drum and are not removable. The rotational axis of rotation of the drum is included in a drive part of the drum which may be designated by the term spider. The friction ring is mounted by means of a press on the drive axis in rotation of the drum. These thick rings are machined and ground to obtain a rough surface and sometimes treated. In addition, these friction rings are made of brass.

Cependant, ces machines à laver le linge ont l'inconvénient d'avoir une bague de frottement solidaire de l'axe d'entraînement en rotation du tambour et n'autorisant pas un remplacement aisé du couple joint d'étanchéité et bague de frottement, notamment en cas d'usure. En outre, la graisse du joint d'étanchéité n'est pas protégée contre les Pollutions possibles dès son déconditionnement pour le montage sur dispositif de palier de tambour et jusqu'à l'encuvage de la machine à laver et / ou sécher le linge lors de son assemblage sur une ligne de fabrication. Par ailleurs, la bague de frottement doit être montée en force et nécessite du matériel adapté à ce type d'opération lors de la fabrication.However, these washing machines have the disadvantage of having a friction ring integral with the drive axis in rotation of the drum and does not allow easy replacement of the torque seal and friction ring, especially in case of wear. In addition, the grease of the seal is not protected against possible pollution from its deconditioning for mounting on the drum bearing device and until the washing of the washing machine and / or drying the laundry when of his assembly on a production line. Furthermore, the friction ring must be mounted in force and requires equipment adapted to this type of operation during manufacture.

La présente invention a pour but de résoudre les inconvénients précités et de proposer une machine à laver et / ou sécher le linge avec un dispositif de palier permettant de garantir un assemblage simple et fiable. La bague de frottement n'est pas solidaire de l'axe d'entraînement en rotation du tambour et permet de remplacer aisément le couple joint d'étanchéité et bague de frottement. La graisse du joint d'étanchéité est protégée dès sa mise en place et jusqu'à l'assemblage du dispositif de palier sur la machine à laver et / ou sécher le linge. Le démontage du dispositif de palier est aisé lors d'une intervention du service après vente du fabricant de ladite machine. Par ailleurs, la bague de frottement du dispositif de palier est de faible épaisseur et en inox. De cette manière, le coût d'obtention du dispositif de palier est minimisé et permet des interventions de service après vente rapides et peu coûteuses.The present invention aims to solve the aforementioned drawbacks and propose a washing machine and / or dryer with a bearing device to ensure a simple and reliable assembly. The friction ring is not integral with the rotational drive axis of the drum and can easily replace the seal and friction ring torque. The seal grease is protected as soon as it is put in place and until the bearing device is assembled on the washing machine and / or the laundry is dried. Disassembly of the bearing device is easy during an intervention of the after-sales service of the manufacturer of said machine. Furthermore, the friction ring of the bearing device is thin and stainless steel. In this way, the cost of obtaining the bearing device is minimized and allows quick and inexpensive after-sales service interventions.

Un tel dispositif de palier est réalisé sous la forme d'un ensemble prêt à monter sur une machine à laver et / ou sécher le linge et nécessitant un encombrement réduit.Such a bearing device is made in the form of a set ready to mount on a washing machine and / or tumble dry and requiring a small footprint.

A cet effet, la présente invention vise un dispositif de palier pour une machine à laver et / ou sécher le linge comprenant au moins un boîtier de roulement assemblé avec un bloc palier, un joint d'étanchéité glissé sur une bague de frottement, l'ensemble bague de frottement et joint d'étanchéité étant emmanché en force dans le bloc palier, et ledit dispositif étant relié à une partie d'une cuve de lavage de la machine, ladite cuve de lavage enfermant un tambour, ledit tambour comprenant au moins un moyen d'entraînement fixé sur au moins un flasque dudit tambour, ledit au moins un moyen d'entraînement comprenant un axe s'insérant à l'intérieur du boîtier de roulement.For this purpose, the present invention is directed to a bearing device for a washing machine and / or drying laundry comprising at least one bearing housing assembled with a bearing block, a seal slid on a friction ring, the friction ring assembly and seal being force-fitted into the bearing block, and said device being connected to a portion of a washing tub of the machine, said washing tub enclosing a drum, said drum comprising at least one driving means fixed on at least one flange of said drum, said at least one driving means comprising an axis inserted inside the bearing housing.

Selon l'invention, le dispositif de palier pour une machine à laver et / ou sécher le linge comprend la bague de frottement montée glissante sur une portée dudit au moins un moyen d'entraînement du tambour.According to the invention, the bearing device for a washing machine and / or drying the laundry comprises the friction ring slidably mounted on a bearing of said at least one drive means of the drum.

Ainsi, le démontage du couple bague de frottement et joint d'étanchéité est facile lors d'une intervention du service après vente.Thus, the disassembly of the friction ring and seal ring is easy during a service intervention.

La bague de frottement comprend au moins un épaulement se positionnant entre le boîtier de roulement et ledit au moins un moyen d'entraînement du tambour.The friction ring comprises at least one shoulder positioned between the bearing housing and the at least one drive means of the drum.

L'étanchéité dudit dispositif est assurée par la mise en pression du boîtier de roulement sur ledit au moins un épaulement de la bague de frottement.The sealing of said device is ensured by the pressurization of the bearing housing on said at least one shoulder of the friction ring.

La mise en pression du boîtier de roulement sur ledit au moins un épaulement de la bague de frottement assurant l'étanchéité dudit dispositif est réalisée par des moyens de vissageThe pressurization of the bearing housing on the at least one shoulder of the friction ring sealing said device is performed by screwing means

La bague de frottement comprend une butée limitant le déplacement en translation de ladite bague de frottement entre le boîtier de roulement et une paroi du bloc palier. Ladite butée permet de faciliter le montage du dispositif de palier et permet d'obtenir un ensemble duquel aucune pièce ne peut s'échapper avant le montage de celui-ci sur la machine à laver et / ou sécher le linge.The friction ring comprises a stop limiting the translational movement of said friction ring between the bearing housing and a wall of the bearing block. Said stop facilitates the mounting of the bearing device and provides an assembly from which no part can escape before mounting it on the washing machine and / or tumble dry.

La piste de frottement du joint d'étanchéité sur la bague de frottement s'étend entre ledit au moins un épaulement et la butée de ladite bague de frottement.The friction track of the seal on the friction ring extends between said at least one shoulder and the abutment of said friction ring.

La bague de frottement est centrée sur le joint d'étanchéité à l'intérieur d'un logement du bloc palier.The friction ring is centered on the seal within a housing of the bearing block.

Un jeu fonctionnel J est conçu entre un diamètre intérieur de la bague de frottement et la portée dudit au moins un moyen d'entraînement du tambour.A functional clearance J is provided between an inner diameter of the friction ring and the bearing surface of the at least one drum drive means.

Une poulie est centrée sur l'axe dudit au moins un moyen d'entraînement du tambour et fixée par des moyens de vissage.A pulley is centered on the axis of said at least one drive means of the drum and fixed by screwing means.

Le joint d'étanchéité peut être du type à contact radial. Le joint d'étanchéité comprend deux lèvres à contact radial pour loger de la graisse et frottant sur la bague de frottement. Le joint d'étanchéité comprend au moins un ressort annulaire et une structure métallique surmoulée.The seal may be of the radial contact type. The seal comprises two radial contact lips for accommodating grease and rubbing against the friction ring. The seal comprises at least one annular spring and an overmolded metal structure.

Le joint d'étanchéité peut être du type V-Ring. L'utilisation d'un tel joint d'étanchéité permet de créer un contact frontal. Dans cette configuration, la bague de frottement doit être adaptée afin de faire frotter le joint d'étanchéité sur l'épaulement de ladite bague de frottement et non plus sur la portée cylindrique de ladite bague de frottement.The seal may be of the V-ring type. The use of such a seal makes it possible to create a frontal contact. In this configuration, the friction ring must be adapted to rub the seal on the shoulder of said friction ring and no longer on the cylindrical surface of said friction ring.

Ledit dispositif de palier est surmoulé dans la cuve de lavage.Said bearing device is overmoulded in the washing tub.

Le boîtier de roulement est fixé au bloc palier par des moyens de vissage.The bearing housing is fixed to the bearing block by screwing means.

La bague de frottement est réalisée dans un matériau en inox.The friction ring is made of a stainless steel material.

La bague de frottement est réalisée en emboutissage et a une faible épaisseur.The friction ring is made of stamping and has a small thickness.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will become apparent in the description below.

Aux dessins annexés, donnés à titre d'exemples non limitatifs :

  • la figure 1 représente une vue schématique en coupe d'une machine à laver et / ou sécher le linge ;
  • la figure 2 est une vue éclatée du dispositif de palier d'une machine à laver et / ou sécher le linge conforme à l'invention ;
  • la figure 3 est une vue schématique en perspective et écorchée de l'assemblage du dispositif de palier sur l'axe d'entraînement en rotation du tambour conforme à un premier mode de réalisation de l'invention ;
  • la figure 4 est une vue schématique de coupe de l'assemblage du dispositif de palier sur l'axe d'entraînement en rotation du tambour conforme à un premier mode de réalisation de l'invention ;
  • la figure 5 est une vue schématique de coupe de l'assemblage du dispositif de palier conforme à un premier mode de réalisation de l'invention ; et
  • la figure 6 est une vue schématique de coupe partielle de l'assemblage du dispositif de palier conforme à un second mode de réalisation de l'invention.
In the accompanying drawings, given as non-limiting examples:
  • the figure 1 is a schematic sectional view of a washing machine and / or drying the laundry;
  • the figure 2 is an exploded view of the bearing device of a washing machine and / or drying the laundry according to the invention;
  • the figure 3 is a schematic view in perspective and cut away of the assembly of the bearing device on the axis of rotation of the drum according to a first embodiment of the invention;
  • the figure 4 is a schematic sectional view of the assembly of the bearing device on the axis of rotation of the drum according to a first embodiment of the invention;
  • the figure 5 is a schematic sectional view of the assembly of the bearing device according to a first embodiment of the invention; and
  • the figure 6 is a schematic view of partial section of the assembly of bearing device according to a second embodiment of the invention.

On va décrire tout d'abord en référence à la figure 1 une machine à laver le linge conforme à l'invention.We will first describe with reference to the figure 1 a washing machine according to the invention.

Cette machine à laver le linge 30 est du type à chargement par le dessus. De cette manière, cette machine 30 est adaptée à laver le linge et éventuellement à le sécher.This washing machine 30 is of the top loading type. In this way, this machine 30 is adapted to wash the laundry and possibly to dry it.

Cette machine à laver 30 comporte une carrosserie 31 comprenant une ouverture d'accès à l'intérieur de la carrosserie 31. Dans les machines à chargement par le dessus, cette ouverture d'accès est réalisée dans une portion supérieure 32 de la carrosserie 31, et dans cet exemple, dans un plan supérieur de la carrosserie 31.This washing machine 30 comprises a bodywork 31 comprising an access opening inside the bodywork 31. In the machines for loading from above, this access opening is made in an upper portion 32 of the bodywork 31, and in this example, in an upper plane of the bodywork 31.

Une porte d'accès 33 est adaptée à obturer cette ouverture de la carrosserie 31 de la machine 30, notamment lors du fonctionnement de celle-ci.An access door 33 is adapted to close this opening of the body 31 of the machine 30, in particular during operation thereof.

Dans cet exemple de réalisation, et de manière nullement limitative, la porte d'accès 33 est montée pivotante autour d'un axe de rotation solidaire de la carrosserie 31 de la machine 30.In this embodiment, and in no way limiting, the access door 33 is pivotally mounted about an axis of rotation integral with the bodywork 31 of the machine 30.

La carrosserie 31 de la machine 30 est adaptée à loger une cuve de lavage 8 qui est adaptée notamment à contenir les différents bains de lavage et de rinçage.The body 31 of the machine 30 is adapted to house a washing tub 8 which is adapted in particular to contain the different washing and rinsing baths.

A l'intérieur de la cuve de lavage 8 est monté de manière connue un tambour 11, mobile en rotation autour d'un axe 14 lors des différents cycles de lavage, de rinçage et d'essorage de la machine 30.Inside the washing tub 8 is mounted in a known manner a drum 11, rotatable about an axis 14 during the various cycles of washing, rinsing and spinning of the machine 30.

Le tambour 11 est ainsi monté en rotation autour d'un axe horizontal 14.The drum 11 is thus rotatably mounted about a horizontal axis 14.

On notera que la figure 1 est schématique et que de nombreux organes nécessaires au fonctionnement de la machine (et par exemple moteur, pompes, filtres, ...) ont été omis et n'ont pas besoin d'être décrits en détail ici.It will be noted that the figure 1 is schematic and that many organs necessary for the operation of the machine (and for example engine, pumps, filters, ...) have been omitted and do not need to be described in detail here.

Une machine à laver le linge 30 comprend au moins un dispositif de palier 34 permettant l'entraînement en rotation du tambour 11 à l'intérieur de la cuve de lavage 8. La machine à laver le linge 30 illustrée à la figure 1 comprend deux dispositifs de palier 34 de manière à équilibrer les contraintes exercées sur lesdits dispositifs de palier 34 lors de l'entraînement en rotation du tambour 11. Chaque dispositif de palier 34 est disposé en vis-à-vis d'un flasque 13 de tambour 11.A washing machine 30 comprises at least one bearing device 34 for rotating the drum 11 inside the washing tub 8. The washing machine 30 illustrated in FIG. figure 1 comprises two bearing devices 34 so as to balance the stresses exerted on said bearing devices 34 during driving in rotation of the drum 11. Each bearing device 34 is disposed opposite a drum flange 13 11.

On va décrire à présent un premier mode de réalisation du dispositif de palier d'une machine à laver et / ou sécher le linge, en référence aux figures 2 et 5.We will now describe a first embodiment of the bearing device of a washing machine and / or drying the laundry, with reference to figures 2 and 5 .

Le dispositif de palier 34 pour une machine à laver et / ou sécher le linge 30 comprend au moins un boîtier de roulement 5 assemblé avec un bloc palier 4, un joint d'étanchéité 2 glissé sur une bague de frottement 1, l'ensemble bague de frottement 1 et joint d'étanchéité 2 étant emmanché en force dans le bloc palier 4.The bearing device 34 for a washing machine and / or drying machine 30 comprises at least one bearing housing 5 assembled with a bearing block 4, a seal 2 slid on a friction ring 1, the ring assembly 1 and the seal 2 being force-fitted into the bearing block 4.

Ledit dispositif 34 est relié à une partie d'une cuve de lavage 8 de la machine 30, ladite cuve de lavage 8 enfermant un tambour 11, ledit tambour 11 comprenant au moins un moyen d'entraînement 3 fixé sur au moins un flasque 13 dudit tambour 11, ledit au moins un moyen d'entraînement 3 comprenant un axe 14 s'insérant à l'intérieur du boîtier de roulement 5.Said device 34 is connected to a portion of a washing tub 8 of the machine 30, said washing tub 8 enclosing a drum 11, said drum 11 comprising at least one driving means 3 fixed on at least one flange 13 of said drum 11, said at least one driving means 3 comprising an axle 14 fitting into the inside of the bearing housing 5.

Le bloc palier 4 du dispositif de palier 34 est l'élément de structure principal sur lequel sont assemblés les constituants de ce dispositif de palier 34. L'ensemble joint d'étanchéité 2 et bague de frottement 1 peut être monté à l'aide d'une presse dans ledit bloc palier 4 lors de l'assemblage par le fabricant.The bearing block 4 of the bearing device 34 is the main structural element on which the components of this bearing device 34 are assembled. The assembly of the seal 2 and the friction ring 1 can be assembled with the aid of FIG. a press in said bearing block 4 during assembly by the manufacturer.

Le bloc de palier 4 comprend au moins trois logements 27 permettant le positionnement d'au moins trois oreilles 28 ménagées sur le boîtier de roulement 5. De cette manière, le boîtier de roulement 5 est centré et bloqué en rotation à l'intérieur du bloc palier 4.The bearing block 4 comprises at least three housings 27 allowing the positioning of at least three lugs 28 formed on the bearing housing 5. In this way, the bearing housing 5 is centered and locked in rotation inside the block bearing 4.

Le bloc de palier 4 comprend au moins une nervure 35 en forme de créneaux sur sa périphérie extérieure pour réaliser l'assemblage dudit bloc de palier 4 dans la cuve de lavage 8, l'assemblage du bloc de palier 4 avec la cuve de lavage 8 pouvant être réalisé par surmoulage.The bearing block 4 comprises at least one crenellated rib 35 on its outer periphery for assembling said bearing block 4 in the washing tub 8, assembling the bearing block 4 with the washing tub 8 can be made by overmolding.

Le boîtier de roulement 5 est constitué d'un boîtier réalisé en tôle et d'au moins un roulement assurant la liaison cinématique de pivot entre le tambour 11 et la cuve de lavage 8. Le boîtier de roulement 5 transmet les efforts engendrés par la rotation du tambour 11 et le balourd du tambour 11 au bloc palier 4. Ledit boîtier comprend deux demies coquilles 36. Lesdites deux demies coquilles 36 enferment ledit au moins un roulement 37 de manière à former un logement en forme de gorge.The bearing housing 5 consists of a housing made of sheet metal and at least one bearing ensuring the kinematic connection pivot between the drum 11 and the washing tub 8. The bearing housing 5 transmits the forces generated by the rotation of the drum 11 and the unbalance of the drum 11 to the bearing block 4. Said housing comprises two half-shells 36. Said two half-shells 36 enclose said at least one bearing 37 so as to form a groove-shaped housing.

Le joint d'étanchéité 2 contribue à l'étanchéité du dispositif de palier 34.The seal 2 contributes to the sealing of the bearing device 34.

La bague de frottement 1 est montée glissante sur une portée 16 dudit au moins un moyen d'entraînement 3 du tambour 11.The friction ring 1 is slidably mounted on a bearing surface 16 of the at least one driving means 3 of the drum 11.

De cette manière, le joint d'étanchéité 2 est immobilisé en rotation et en translation à l'intérieur du bloc palier 4 mais la bague de frottement 1 est libre en rotation.In this way, the seal 2 is immobilized in rotation and in translation inside the bearing block 4 but the friction ring 1 is free to rotate.

La bague de frottement 1 comprend une butée 17 limitant le déplacement en translation de ladite bague de frottement 1 entre le boîtier de roulement 5 et une paroi 10 du bloc palier 4. De cette manière, la butée 17 de la bague de frottement 1 lui interdit de s'échapper en translation du dispositif de palier 34.The friction ring 1 comprises a stop 17 limiting the displacement in translation of said friction ring 1 between the bearing housing 5 and a wall 10 of the bearing block 4. In this way, the stop 17 of the friction ring 1 prevents it to escape in translation from the bearing device 34.

Le boîtier de roulement 5 est en appui sur une surface 22 d'un logement 23 du bloc palier 4. Puis, le boîtier de roulement 5 est fixé au bloc palier 4 par des moyens de vissage 18. Le boîtier de roulement 5 est bloqué par au moins trois vis passant au travers d'au moins trois trous lisses ménagés dans ledit boîtier de roulement 5 et lesdites au moins trois vis de type auto taraudeuses créant les filets de vissage par déformation dans au moins trois trous lisses réalisés dans le bloc palier 4.The bearing housing 5 is supported on a surface 22 of a housing 23 of the bearing block 4. Then, the bearing housing 5 is fixed to the bearing block 4 by screwing means 18. The bearing housing 5 is blocked by at least three screws passing through at least three smooth holes in said bearing housing 5 and said at least three self-tapping type screws creating the screw threads by deformation in at least three smooth holes made in the bearing block 4 .

Lesdits au moins trois trous lisses du boîtier de roulement 5 sont ménagés dans lesdites au moins trois oreilles 28 dudit boîtier de roulement 5.Said at least three smooth holes of the bearing housing 5 are formed in said at least three lugs 28 of said bearing housing 5.

Lesdits au moins trois trous filetés du bloc de palier 4 sont réalisés dans lesdits au moins trois logements 27 dudit bloc de palier 4.Said at least three threaded holes of the bearing block 4 are made in said at least three housings 27 of said bearing block 4.

Ledit dispositif de palier 34 est surmoulé dans la cuve de lavage 8. Un premier dispositif de palier 34 est surmoulé directement dans un flanc la cuve de lavage 8 et un second dispositif de palier 34 est surmoulé dans un couvercle de la cuve de lavage 8.Said bearing device 34 is overmoulded in the washing tub 8. A first bearing device 34 is overmolded directly into a sidewall of the washing tub 8 and a second bearing device 34 is overmolded in a lid of the washing tub 8.

Deux moyens d'entraînement 3 du tambour sont fixés dans les flasques 13 du tambour 11. Lors de l'assemblage du tambour 11 dans la cuve de lavage 8 comprenant une ouverture fermée par un couvercle, l'axe 14 du moyen d'entraînement 3 du tambour 11 est centré dans le boîtier de roulement 5 du dispositif de palier 34.Two drive means 3 of the drum are fixed in the flanges 13 of the drum 11. When assembling the drum 11 in the wash tank 8 comprising an opening closed by a cover, the axis 14 of the drive means 3 of the drum 11 is centered in the bearing housing 5 of the bearing device 34.

Un jeu fonctionnel J est conçu entre un diamètre intérieur de la bague de frottement 1 et la portée 16 dudit au moins un moyen d'entraînement 3 du tambour 11.A functional clearance J is designed between an inside diameter of the friction ring 1 and the bearing surface 16 of the at least one driving means 3 of the drum 11.

Le tambour 11 est en position lorsque la bague de frottement 1 est empilée axialement entre le moyen d'entraînement 3 dudit tambour 11 et la une bague intérieure du boîtier de roulement 5.The drum 11 is in position when the friction ring 1 is stacked axially between the drive means 3 of said drum 11 and the inner ring of the bearing housing 5.

Une poulie 7 est centrée sur l'axe 14 dudit au moins un moyen d'entraînement 3 du tambour 11 et fixée par des moyens de vissage 6. La poulie 7 est en position lorsque celle-ci est en appui une bague intérieure du boîtier de roulement 5. Les moyens de vissage 6 relient la poulie 7 à l'axe 14 du moyen d'entraînement 3 du tambour 11. Les moyens de vissage 6 comprennent une surface d'appui 9 venant en contact avec une surface extérieure de la poulie 7.A pulley 7 is centered on the axis 14 of the at least one driving means 3 of the drum 11 and fixed by screwing means 6. The pulley 7 is in position when the latter bears an inner ring of the housing of The screwing means 6 connect the pulley 7 to the axis 14 of the drive means 3 of the drum 11. The screwing means 6 comprise a bearing surface 9 coming into contact with an outer surface of the pulley 7. .

Le second dispositif de palier 34 monté sur le couvercle de la cuve de lavage 8 comprend également des moyens de vissage 6 installés sur le moyen d'entraînement 3 du tambour 11 et venant en appui directement sur la bague intérieure du boîtier de roulement 5. Le second dispositif de palier 34 n'est pas relié à une poulie 7 entraînant le tambour 11 en rotation.The second bearing device 34 mounted on the lid of the washing tub 8 also comprises screwing means 6 installed on the drive means 3 of the drum 11 and bearing directly on the inner ring of the bearing housing 5. The second bearing device 34 is not connected to a pulley 7 driving the drum 11 in rotation.

Dans ce mode de réalisation, le joint d'étanchéité 2 est du type à contact radial. Le joint d'étanchéité 2 comprend deux lèvres à contact radial 20 pour loger de la graisse et frottant sur la bague de frottement 1. Ce joint d'étanchéité 2 a pour fonction de supprimer le passage de liquide et de poussière. Le joint d'étanchéité 2 comprend au moins un ressort annulaire et une structure métallique surmoulée.In this embodiment, the seal 2 is of the radial contact type. The seal 2 comprises two radial contact lips 20 for accommodating grease and rubbing on the friction ring 1. This seal 2 serves to remove the passage of liquid and dust. The seal 2 comprises at least one annular spring and an overmolded metal structure.

La bague de frottement 1 comprend une piste de frottement pour les lèvres du joint d'étanchéité 2 et participe également à l'étanchéité du dispositif de palier 34. Ladite bague de frottement 1 protège la graisse du joint d'étanchéité 2 dès le déconditionnement de l'ensemble constitué par ces deux éléments pour le montage de ce dernier dans le dispositif de palier 34.The friction ring 1 comprises a friction track for the lips of the seal 2 and also contributes to the sealing of the bearing device 34. Said friction ring 1 protects the grease of the seal 2 as soon as the deconditioning of the the assembly constituted by these two elements for mounting the latter in the bearing device 34.

La bague de frottement 1 comprend au moins un épaulement 15 se positionnant entre le boîtier de roulement 5 et ledit au moins un moyen d'entraînement 5 du tambour 11.The friction ring 1 comprises at least one shoulder 15 positioned between the bearing housing 5 and the at least one drive means 5 of the drum 11.

L'épaulement 15 de la bague de frottement 1 comprend une ouverture 26 en son centre pour permettre le passage de l'axe 14 du moyen d'entraînement 3 du tambour 11 au travers de ladite ouverture 26.The shoulder 15 of the friction ring 1 comprises an opening 26 at its center to allow the passage of the axis 14 of the drive means 3 of the drum 11 through said opening 26.

Cet épaulement 15 participe à l'étanchéité du dispositif de palier 34. L'étanchéité est réalisée par le contact métal sur métal du boîtier de roulement 5 sur l'épaulement 15 de la bague de frottement 1 et de l'épaulement 15 de la bague de frottement 1 sur la portée 16 du moyen d'entraînement 3 du tambour 11. L'étanchéité est assurée par la pression exercée par les moyens de visage 6 sur le boîtier de roulement 5, l'épaulement 15 de la bague de frottement 1 et la portée 16 du moyen d'entraînement 3 du tambour 11.This shoulder 15 contributes to the sealing of the bearing device 34. The seal is achieved by the metal-on-metal contact of the bearing housing 5 on the shoulder 15 of the friction ring 1 and the shoulder 15 of the ring 1 on the bearing surface 16 of the drive means 3 of the drum 11. The sealing is ensured by the pressure exerted by the face means 6 on the bearing housing 5, the shoulder 15 of the friction ring 1 and the bearing 16 of the driving means 3 of the drum 11.

Le dispositif de palier 34 permet de réaliser l'étanchéité à l'eau sous forme liquide ou vapeur de l'intérieur de la cuve de lavage 8 vers le boîtier de la machine à laver et / ou sécher le linge.The bearing device 34 makes it possible to seal the water in liquid or vapor form from the inside of the washing tub 8 to the housing of the washing machine and / or to dry the laundry.

L'étanchéité dudit dispositif de palier 34 est assurée par la mise en pression du boîtier de roulement 5 sur ledit au moins un épaulement 15 de la bague de frottement 1.The sealing of said bearing device 34 is ensured by putting the bearing housing 5 under pressure on said at least one shoulder 15 of the friction ring 1.

La mise en pression du boîtier de roulement 5 sur ledit au moins un épaulement 15 de la bague de frottement 1 assurant l'étanchéité dudit dispositif est réalisée par des moyens de vissage 6.The pressurization of the bearing housing 5 on said at least one shoulder 15 of the friction ring 1 sealing said device is performed by screwing means 6.

La bague de frottement 1 est centrée sur le joint d'étanchéité 2 à l'intérieur d'un logement 21 du bloc palier 4.The friction ring 1 is centered on the seal 2 inside a housing 21 of the bearing block 4.

L'étanchéité du dispositif de palier 34 est assurée entre deux ensembles indépendants dont un premier ensemble est fixe et un second ensemble est mobile.The sealing of the bearing device 34 is provided between two independent sets of which a first set is fixed and a second set is movable.

L'ensemble fixe comprend la cuve de lavage 8 et son couvercle, le bloc palier 4, le boîtier de roulement 5 et le joint d'étanchéité 2.The fixed assembly comprises the washing tub 8 and its cover, the bearing block 4, the bearing housing 5 and the seal 2.

L'ensemble mobile comprend le tambour 11, le moyen d'entraînement 3 dudit tambour 11, la bague de frottement 1 et la poulie 7 avec les moyens de vissage 6.The moving assembly comprises the drum 11, the driving means 3 of the drum 11, the friction ring 1 and the pulley 7 with the screwing means 6.

Le dispositif de palier 34 remplit une première étanchéité statique entre le bloc palier 4 et le joint d'étanchéité 2. Le joint d'étanchéité 2 est emmanché en force dans le bloc palier 4 pour supprimer toute fuite d'eau entre la périphérie extérieure du joint d'étanchéité 2 et le logement 21 du bloc palier 4 adapté à recevoir ledit joint d'étanchéité 2.The bearing device 34 fills a first static seal between the bearing block 4 and the seal 2. The seal 2 is force-fitted into the bearing block 4 to eliminate any leakage of water between the outer periphery of the bearing block seal 2 and the housing 21 of the bearing block 4 adapted to receive said seal 2.

Le dispositif de palier 34 remplit une seconde étanchéité statique entre la bague de frottement 1 et le moyen d'entraînement 3 du tambour 11. Un jeu fonctionnel J de montage est nécessaire entre le diamètre intérieur de la bague de frottement 1 et la portée 16 du moyen d'entraînement 3 du tambour 11 et l'eau peut s'infiltrer dans cet espace. Cette quantité d'eau ne peut s'infiltrer plus loin dans le dispositif de palier 34 grâce au serrage axial de l'épaulement 15 de la bague de frottement 1 entre la portée 16 du moyen d'entraînement 3 du tambour 11 et la bague intérieure du boîtier de roulement 5 par les moyens de vissage 6. Le serrage axial est assuré notamment par des états de surface propres des faces en appui de la portée 16 du moyen d'entraînement 3 du tambour 11, de l'épaulement 15 de la bague de frottement 1 et de la bague intérieure du boîtier de roulement 5 impliquées dans l'empilage du dispositif de palier 34. La rugosité desdites faces en appui est d'une qualité moyenne et nécessitant pas d'opérations de rectification ou autres opérations de traitement pour garantir l'étanchéité. L'étanchéité est assurée par le contact métal sur métal et sous contrainte mécanique desdits éléments cités précédemment.The bearing device 34 fills a second static seal between the friction ring 1 and the drive means 3 of the drum 11. A functional clearance J is required between the inner diameter of the friction ring 1 and the bearing surface 16 of the friction ring 1. drive means 3 of the drum 11 and the water can seep into this space. This quantity of water can not infiltrate further into the bearing device 34 by axial clamping of the shoulder 15 of the friction ring 1 between the bearing surface 16 of the drive means 3 of the drum 11 and the inner ring of the bearing housing 5 by the screwing means 6. The axial clamping is ensured in particular by the clean surface conditions of the faces in abutment with the bearing surface 16 of the drive means 3 of the drum 11, the shoulder 15 of the bushing 1 and the inner ring of the bearing housing 5 involved in the stack of the bearing device 34. The roughness of said bearing faces is of medium quality and does not require grinding operations or other processing operations for guarantee the tightness. Sealing is ensured by the metal-to-metal contact and under mechanical stress of said elements mentioned above.

L'étanchéité est assurée par le matage de la matière de la portée 16 du moyen d'entraînement 3 du tambour 11. La matière de la portée 16 est préférentiellement de l'aluminium.Sealing is ensured by the matting of the material of the bearing surface 16 of the drive means 3 of the drum 11. The material of the bearing surface 16 is preferably aluminum.

En raison de la force exercée par les moyens de vissage 6 via la poulie 7 et la bague intérieure du roulement 37 et de la surface de contact entre la bague de frottement 1 et la portée 16 du moyen d'entraînement 3 du tambour 11, la pression de contact est suffisamment élevée pour mater la matière tendre de la portée 16 qui est de l'aluminium et former ainsi une étanchéité du dispositif de palier 34.Due to the force exerted by the screwing means 6 via the pulley 7 and the inner ring of the bearing 37 and the contact surface between the friction ring 1 and the bearing surface 16 of the drive means 3 of the drum 11, the contact pressure is sufficiently high to guard the soft material of the bearing surface 16 which is aluminum and thus to form a seal of the bearing device 34.

Le dispositif de palier 34 remplit également une étanchéité dynamique entre le joint d'étanchéité 2 et la bague de frottement 1. Le joint d'étanchéité 2 comprenant deux lèvres 20 frotte sur la piste de frottement située sur la partie cylindrique extérieure de la bague de frottement 1. De cette manière, le passage de l'eau est bloqué.The bearing device 34 also performs a dynamic seal between the seal 2 and the friction ring 1. The seal 2 comprising two lips 20 rubs on the friction track located on the outer cylindrical portion of the seal ring. friction 1. In this way, the passage of water is blocked.

La piste de frottement 19 du joint d'étanchéité 2 sur la bague de frottement 1 s'étend entre ledit au moins un épaulement 15 et la butée 17 de ladite bague de frottement 1.The friction track 19 of the seal 2 on the friction ring 1 extends between said at least one shoulder 15 and the abutment 17 of said friction ring 1.

La bague de frottement 1 est réalisée dans un matériau en inox. La bague de frottement 1 peut être réalisée soit en emboutissage soit en galetage et de cette manière le coût d'obtention de cette dernière peut être réduit.The friction ring 1 is made of a stainless steel material. The friction ring 1 can be made either by stamping or burnishing and in this way the cost of obtaining the latter can be reduced.

Le dispositif de palier 34 conforme à l'invention permet de réaliser une bague de frottement 1 de moins grande précision que les bagues de frottement connues dans l'état de la technique. Ladite bague de frottement 1 n'a pas besoin d'être réalisée en usinage puis d'être rectifiée voire traitée pour obtenir un état de surface de faible rugosité.The bearing device 34 according to the invention makes it possible to produce a friction ring 1 of less precision than the friction rings known in the state of the art. Said friction ring 1 does not need to be machined then to be ground or treated to obtain a surface condition of low roughness.

Le démontage de ce dispositif de palier 34 lors d'une intervention de service après vente est rendue aisée par la bague de frottement 1 montée glissante sur la portée 16 du au moins un moyen d'entraînement 3 du tambour 11. Le démontage du dispositif de palier 34 permet de remplacer le boîtier de roulement 5 et / ou la bague de frottement 1 et / ou le joint d'étanchéité 2.The disassembly of this bearing device 34 during a service intervention is made easy by the friction ring 1 slidably mounted on the bearing surface 16 of the at least one drive means 3 of the drum 11. The disassembly of the bearing 34 can replace the bearing housing 5 and / or the friction ring 1 and / or the seal 2.

Le démontage du dispositif de palier 34 s'effectue en suivant les opérations suivantes :

  • dévissage d'au moins un moyen de vissage 6 prenant appui sur la poulie 7 d'entraînement en rotation du tambour 11 ;
  • retrait de la poulie 7 de l'axe 14 du moyen d'entraînement 3 du tambour 11 ;
  • dévissage des moyens de vissage 18 fixant le boîtier de roulement 5 dans le bloc palier 4 ;
  • retrait du boîtier de roulement 5 du bloc palier 4 ;
  • retrait de l'ensemble joint d'étanchéité 2 avec la bague de frottement 1.
Disassembly of the bearing device 34 is carried out by following the following operations:
  • unscrewing at least one screwing means 6 bearing on the pulley 7 for rotating the drum 11;
  • removing the pulley 7 from the axis 14 of the drive means 3 of the drum 11;
  • unscrewing the screwing means 18 fixing the bearing housing 5 in the bearing block 4;
  • removal of the bearing housing 5 of the bearing block 4;
  • removing the seal assembly 2 with the friction ring 1.

On va décrire à présent un second mode de réalisation d'un dispositif de palier d'une machine à laver et / ou sécher le linge, en référence à la figure 6.We will now describe a second embodiment of a bearing device of a washing machine and / or drying the laundry, with reference to the figure 6 .

Comme précédemment, la figure 6 illustre de manière schématique les différents moyens nécessaires à la mise en oeuvre de l'invention.As before, the figure 6 schematically illustrates the various means necessary for the implementation of the invention.

Les éléments identiques au mode de réalisation précédent, et portant les mêmes références numériques, ne seront pas redécrits ci-après.The elements identical to the previous embodiment, and bearing the same reference numerals, will not be described below.

Dans ce mode de réalisation, le joint d'étanchéité 2 est du type V-Ring. La bague de frottement 1 n'est pas centrée par le joint d'étanchéité 2 puisque le contact pour l'étanchéité est du type frontal. Pour cela, le bloc palier 4 et la bague de frottement 1 sont adaptés à ce type de joint d'étanchéité 2. Le joint d'étanchéité 2 frotte sur une piste de frottement réalisée par un disque 24 placé autour de la partie cylindrique de la bague de frottement 1. Ledit disque 24 est en appui sur le boîtier de roulement 5 et un épaulement 25 ménagé dans le logement 21 du bloc palier 4. Le diamètre intérieur du disque 24 est supérieur au diamètre extérieur de la bague de frottement 1 de manière à ne pas créer de frottement.In this embodiment, the seal 2 is of the V-ring type. The friction ring 1 is not centered by the seal 2 since the contact for sealing is of the frontal type. For this, the bearing block 4 and the friction ring 1 are adapted to this type of seal 2. The seal 2 rubs on a friction track made by a disc 24 placed around the cylindrical portion of the friction ring 1. Said disc 24 is supported on the bearing housing 5 and a shoulder 25 formed in the housing 21 of the bearing block 4. The inner diameter of the disc 24 is greater than the outer diameter of the friction ring 1 so not to create friction.

Bien entendu, la présente invention n'est nullement limitée aux modes de réalisation décrits et représentés, mais englobe, bien au contraire, toute variante à portée de l'homme du métier et entre autre, l'utilisation d'un tel dispositif dans tout appareil de lavage.Of course, the present invention is not limited to the embodiments described and shown, but encompasses, on the contrary, any variant within the reach of the skilled person and among others, the use of such a device in any washing apparatus.

Claims (16)

  1. A bearing device for a laundry washing and/or drying machine comprising at least one bearing housing (5) assembled with a bearing block (4), a seal (2) slid onto an friction ring (1), the friction ring (1) and seal (2) assembly being press-fitted into the bearing block (4), and said device (34) being connected to part of a wash tub (8) of the machine (30), said wash tub (8) enclosing a drum (11), said drum (11) comprising at least one means of driving (3) fastened onto at least one flange (13) of said drum (11), said at least one means of driving (3) comprising an axle (14) that fits into the bearing housing (5), characterized in that the friction ring (1) is mounted slidably onto a seat (16) of said at least one means of driving (3) the drum (11).
  2. A bearing device for a laundry washing and/or drying machine according to claim 1, characterized in that the friction ring (1) comprises at least one shoulder (15) positioned between the bearing housing (5) and said at least one means of driving (3) the drum (11).
  3. A bearing device for a laundry washing and/or drying machine according to claim 2, characterized in that said device (34) is made leakproof by the pressure applied from the bearing housing (5) to said at least one shoulder (15) of the friction ring (1).
  4. A bearing device for a laundry washing and/or drying machine according to claim 3, characterized in that the pressure applied to the bearing housing (5) on the said at least one shoulder (15) of the friction ring (1), ensuring that said device (34) is leakproof, is applied by means of screwing (6).
  5. A bearing device for a laundry washing and/or drying machine according to any one of the claims 1 to 4, characterized in that the friction ring (1) is centred on the seal (2) inside a housing (21) of the bearing block (4).
  6. A bearing device for a laundry washing and/or drying machine according to any one of the claims 1 to 5, characterized in that a functional space J is designed between an inner diameter of the friction ring (1) and the seat (16) of said at least one means of driving (3) the drum (11).
  7. A bearing device for a laundry washing and/or drying machine according to any one of the claims 1 to 6, characterized in that the friction ring (1) comprises a stop (17) limiting the translational movement of said friction ring (1) between the bearing housing (5) and a wall (10) of the bearing block (4).
  8. A bearing device for a laundry washing and/or drying machine according to claim 7, characterized in that the friction surface (19) of the seal (2) on the friction ring (1) extends between said at least one shoulder (15) and the stop (17) of said friction ring (1).
  9. A bearing device for a laundry washing and/or drying machine according to any one of the claims 1 to 8, characterized in that a pulley (7) is centred on the axis (14) of said at least one means of driving (3) the drum (11) and fastened by means of screwing (6).
  10. A bearing device for a laundry washing and/or drying machine according to any one of the claims 1 to 9, characterized in that the seal (2) is of the radial-contact type.
  11. A bearing device for a laundry washing and/or drying machine according to claim 10, characterized in that the seal (2) comprises two radial contact lips (20) to house the lubricant and which rub against the friction ring (1).
  12. A bearing device for a laundry washing and/or drying machine according to claim 11, characterized in that the seal (2) comprises at least one ring spring and one moulded metallic structure.
  13. A bearing device for a laundry washing and/or drying machine according to any one of the claims 1, 2, 7, 8 or 9, characterized in that the seal (2) is of the V-Ring type.
  14. A bearing device for a laundry washing and/or drying machine according to any one of the preceding claims, characterized in that said bearing device (34) is moulded within the wash tub (8).
  15. A bearing device for a laundry washing and/or drying machine according to any one of the preceding claims, characterized in that the bearing housing (5) is fastened onto the bearing block (4) by means of screwing (18).
  16. A bearing device for a laundry washing and/or drying machine according to any one of the preceding claims, characterized in that the friction ring (1) is constructed from a stainless-steel material.
EP07104733A 2006-03-23 2007-03-23 Bearing for a laundry washing and/or drying machine Active EP1842950B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07104733T PL1842950T3 (en) 2006-03-23 2007-03-23 Bearing for a laundry washing and/or drying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0602859A FR2898911B1 (en) 2006-03-23 2006-03-23 BEARING DEVICE FOR A WASHING AND / OR DRYING MACHINE

Publications (2)

Publication Number Publication Date
EP1842950A1 EP1842950A1 (en) 2007-10-10
EP1842950B1 true EP1842950B1 (en) 2013-01-23

Family

ID=37198874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07104733A Active EP1842950B1 (en) 2006-03-23 2007-03-23 Bearing for a laundry washing and/or drying machine

Country Status (4)

Country Link
EP (1) EP1842950B1 (en)
ES (1) ES2400229T3 (en)
FR (1) FR2898911B1 (en)
PL (1) PL1842950T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021008625A1 (en) * 2019-07-18 2021-01-21 Qingdao Haier Drum Washing Machine Co., Ltd. Dryer appliance with slide bearing assemblies including wear detection features

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109440383A (en) * 2018-12-06 2019-03-08 无锡小天鹅股份有限公司 Device for clothing processing
CN114197373A (en) * 2021-12-14 2022-03-18 中国重汽集团柳州运力科迪亚克机械有限责任公司 Snow throwing cylinder friction ring device
CN114703627B (en) * 2022-03-29 2022-12-20 南通盈赛纺织品有限公司 Textile finished product cleaning and drying equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1305328A (en) * 1960-01-20 1962-10-05 Esswein & Cie Soc Bearings, more particularly applicable to washing machines
FR1535332A (en) * 1966-08-31 1968-08-02 Philips Nv Washing machine for household use
DE19734525A1 (en) * 1997-02-14 1998-08-20 Bosch Siemens Hausgeraete Bearing device for household washing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021008625A1 (en) * 2019-07-18 2021-01-21 Qingdao Haier Drum Washing Machine Co., Ltd. Dryer appliance with slide bearing assemblies including wear detection features

Also Published As

Publication number Publication date
FR2898911B1 (en) 2008-05-02
FR2898911A1 (en) 2007-09-28
EP1842950A1 (en) 2007-10-10
PL1842950T3 (en) 2013-06-28
ES2400229T3 (en) 2013-04-08

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