EP2917396B1 - Amortisseur d'oscillation pour application domestique ayant un tambour tournant et appareil électroménager comprenant l'amortisseur - Google Patents

Amortisseur d'oscillation pour application domestique ayant un tambour tournant et appareil électroménager comprenant l'amortisseur Download PDF

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Publication number
EP2917396B1
EP2917396B1 EP13821971.2A EP13821971A EP2917396B1 EP 2917396 B1 EP2917396 B1 EP 2917396B1 EP 13821971 A EP13821971 A EP 13821971A EP 2917396 B1 EP2917396 B1 EP 2917396B1
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EP
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Prior art keywords
swiveling lever
oscillation
bushing
pivot shaft
helical spring
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EP13821971.2A
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German (de)
English (en)
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EP2917396A2 (fr
Inventor
Ismael Gracia Bobed
Roberto Latre Abadia
Gerardo Martinez Perez
Eduardo Recio Ferrer
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis

Definitions

  • the present invention relates to an oscillation damper for a household appliance, with a fixed support fixedly mountable on a lower part of the housing of the household appliance in which is housed an oscillating group comprising a tub in which a drum rotates around a rotation shaft, a pivot shaft mounted on the support, a radial friction element mounted on the pivot shaft, and a swiveling lever associated with the radial friction element, with a free end articulable to a support element simultaneously articulated to a lower part of the tub receiving a load from the oscillating group.
  • the invention also relates to a household appliance, comprising a housing that houses an oscillating group comprising a tub in which a drum rotates, driven by a motor, the tub being connected at the top with the housing by means of at least a pair of sustaining springs and at the bottom by means of at least two support elements connected to an oscillation damping system, the support element being articulated to the housing with the intercalation of at least one articulation comprising a radial friction element.
  • the invention has particular utility in household electrical appliances such as washing machines and dryers.
  • Washing machines and dryers with a wash drum rotatably accommodated in a wash tub usually have a vibration damping device that joins the wash tub to the housing.
  • the vibrations and noise produced by the rotational movement of the drum are damped by means of a vibration damping device.
  • Vibrations are transmitted through damping elements to avoid having the movements of the oscillating group (assembly: wash tub, drum, and motor) directly transmitted to the frame of washing machines to produce vibrations and noise therein.
  • the oscillating group assembly: wash tub, drum, and motor
  • Linear damper systems for absorbing these vibrations are known that include piston type dampers such as, for example, the free-travel damper described in EP 1 754 908 A1 , which has a short path (from 5 mm to 8 mm) with little or no frictional force.
  • piston type dampers such as, for example, the free-travel damper described in EP 1 754 908 A1 , which has a short path (from 5 mm to 8 mm) with little or no frictional force.
  • Such damper essentially functions during the periods when the machine motor is accelerating or decelerating the rotational speed of the drum, that is, when oscillating movements are longer due to greater inertia and exceed the amplitude of the frictionless free travel path of the damper, which then exerts a damping action.
  • the oscillating movements are of lower amplitude and piston movement is reduced so as to move within the range of free travel without exerting frictional force.
  • a radial damper and its application to a washing machine are known, for example, from document WO 2011/070092 A1 .
  • the necessary frictional force is achieved radially by means of friction applied by rotation of a shaft driven by a rigid arm attached to the tub. It is an example of a connecting rod-crankshaft unit, and friction is applied to the shaft radially so that the crossbar supporting the mounts is not directly affected and bending is not transmitted.
  • An object of the present invention is to overcome the inconveniences of the state of the art described above by means of an oscillation damper for a household appliance, particularly for a washing machine or dryer, and a household appliance comprising at least one oscillation damper of this type.
  • the oscillation damper comprises a support suitable to be fixedly mounted on a lower part of the housing of the household appliance in which is housed an oscillating group comprising a tub in which a drum rotates around a rotation shaft, a pivot shaft mounted on a first end socket and a second end socket of the support, a radial friction element mounted on an intermediate part of the pivot shaft, a swiveling lever associated with the radial damper, with a free end articulable to a support element which is articulable to a lower part of the tub receiving a load from the oscillating group.
  • the oscillation damper comprises an elastic element that comprises a first helical spring with windings arranged around the pivot shaft between the first end socket and the radial friction element and a second helical spring with windings arranged around the pivot shaft between the second end socket and the radial friction element; each helical spring having a first end connected to the swiveling lever and a second end connected to the support, such that it opposes a torsional force to the rotation of the swiveling lever, and the first end of each helical spring slide in a guiding slot of the swiveling lever allowing a limited rotation of the swiveling lever without opposing the torsional force.
  • the elastic element is designed so that the torsional force it opposes to the rotation of the swiveling lever corresponds to a proportional part of the load of the oscillating group transmitted by the support element to which the swiveling lever is articulable.
  • the tub is connected with the housing at the top by means of at least one pair of sustaining springs and at the bottom through at least two support elements connected to an oscillation damping system.
  • Each support element is articulated to the housing with the intercalation of at least one articulation comprising a radial friction element.
  • the oscillation damping system comprises a plurality of oscillation dampers according to the invention, each oscillation damper having a swiveling lever that is articulated to one of the support elements.
  • Each of these oscillation dampers features at least the previously described characteristics, although it can also feature one or more of the characteristics of preferred embodiments of oscillation dampers as described below.
  • the oscillation damper is designed to oppose a torsional force to the load of the oscillating group received by the support element articulated to the swiveling lever.
  • the load of the oscillating group is based on the weight of the assembly formed by the tub, the drum, and the motor that form the oscillating group plus the weight of the maximum volume of wash water present in the tub and the maximum possible weight of laundry present in the drum that, during the drum rotation during the washing and centrifuging processes, exerts forces that afford the mentioned oscillations, the transmission of which to the washing machine housing can be mitigated by means of employing the oscillation damper of the present invention.
  • this oscillating group In a washing machine with a capacity of 7 kg of laundry, this oscillating group usually has a weight of 42 kg to 48 kg and the maximum total weight of the water and laundry is usually about 15 kg.
  • the elastic element comprises a first helical spring with windings arranged around the pivot shaft between the first end socket and the radial damper and a second helical spring with windings arranged around the pivot shaft between the second end socket and the radial damper.
  • the swiveling lever can comprise two lugs articulable to the support element, in which case the first helical spring is connected by its first end to one of the lugs and by its second end to first end socket, and the second helical spring is connected by its first end to the other lug and by its second end to second end socket.
  • each helical spring is connected to the swiveling lever near to the pivot shaft.
  • This first end of each helical spring is connected to the swiveling lever permitting a limited rotation of the swiveling lever without opposing the torsional force, which prevents oscillations that are below a certain threshold value that do not result in substantial vibrations in the household appliance housing, thus activating the oscillation damper unnecessarily, which reduces wear on the oscillation damper.
  • the swiveling lever is provided with a guide slot in which the first ends of the helical spring slide during the limited rotation of the swiveling lever, and which extends perpendicularly to the pivot shaft.
  • This guide slot comprises an upper guide, a lower guide, and a supporting wall that is arranged between first ends of the upper guide and of the lower guide, an on which the first end of the helical spring is supported when the swiveling lever is subjected to the load of the oscillating group received by the support element to which the swiveling lever is articulable.
  • the guide slot can be provided with a retaining wall arranged between the second ends of the upper and lower guides opposite to the supporting wall.
  • the guide slot can be a recess that, instead of the retaining wall, comprises an access opening between the second ends of the upper and lower guides opposite to the supporting wall.
  • the swiveling lever comprises both lugs, each one of same comprises such a guide slot.
  • the radial friction element comprises outer bushing associated with the swiveling lever rotatably arranged with respect to the pivot shaft, and moreover comprising internal friction means that radially encircle the pivot shaft exerting a frictional force to damp rotational movement between the pivot shaft and the outer bushing.
  • the purpose of the radial friction element is to reduce a certain type of oscillation, namely the shortest and most frequent that is produced in a stabilized machine at a constant speed, such that it can reduce the friction and transmission of vibrations to the household appliance housing in phase with the greater number of revolutions and oscillations.
  • This radial friction element can comprise an inner bushing rotatably enclosed in the outer bushing.
  • the inner bushing comprises an outer wall opposite to an inner wall of the outer bushing and an inner axial passage wherein the internal friction means is radially arranged to exert a frictional force at least against the inner bushing.
  • the rotation between the inner bushing and the outer bushing is limited by a rotation limiting system comprising at least an axial channel placed between the inner bushing and the outer bushing and at least a rotation limiting system situated in the axial channel, which has a cross section in the shape of a circular ring segment delimited by two radial end stop surfaces.
  • Each rotation limiting element is selected from among projections emerging from the inner wall of the outer bushing, protrusions emerging from the outer wall of the inner bushing, sliding locking elements, and combinations thereof.
  • Each protruding element is moveable in the corresponding axial channel such that for the inner bushing and the outer bushing to rotate with respect to one another each protruding element has a free path in the axial channel limited by said stop surfaces.
  • the free rotation path between the outer bushing and the inner bushing can, for example, correspond to a 1° to 4° arch.
  • the elastic element is designed so that the torsional force that opposes the rotation of the swiveling lever corresponds to 80% to 90% of the load of the oscillating group transmitted by the support element to which the swiveling lever is articulable.
  • each one of these is designed to oppose a portion of the torsional force proportional to the oscillating group load.
  • the present invention enables a reduction in the level of vibrations and noise induced by the oscillations of the oscillating group by means of a damper with a simple and robust configuration which is very easily assembled.
  • FIGS 1 and 2 show an embodiment of a household appliance 9 embodied as a washing machine 9 that, in the conventional manner, comprises a housing 10.
  • Housing 10 comprises a frontal wall 11 with a loading opening 12 that permits access to a drum 13, and which is closed by means of a loading door 14.
  • Inside housing 10 is enclosed an oscillating group comprising a tub 15 in which rotates a drum 13, and that has a front hatch 14 facing loading opening 12.
  • Drum 13 comprises a driven pulley 23 connected to a driving motor 21 by means of a belt 22.
  • Housing 10 moreover comprises a back wall (not shown in the figures), a cover wall 19, a lower base 20, as well as both side walls 25.
  • Tub 15 is connected to the top of housing 10 by means of two sustaining springs 17 that are engaged in respective hooks 18 in the sides of covering wall 19 of housing 10, and below through two support elements 24 connected to base 20 of housing 10 in both positions that are close to respective side walls 25 of housing 10.
  • each support element 24 is connected to base 20 of housing 10 through a respective oscillation damper 1 comprising a fixed support 2 anchored in base 20, a first joint 26 that comprises a pivot shaft 26 rotatably coupled in fixed support 2, and at least one swiveling lever 5 joined to pivot shaft 3 through a friction damper (not shown in Figures 1 and 2 ).
  • the inner end of support element 24 is joined to swiveling lever 5 by means of second joint 26, during which the upper end of each support element 24 is articulated to tub 15 by means of third joint 29.
  • the oscillation dampers 1 are designed to oppose torsional forces that collectively correspond to 80% to 90% of the load of the oscillating group transmitted by support elements 24 articulated to swiveling levers 5, during which the rest of the load is supported by sustaining springs 17.
  • the load of the oscillating group is based on the weight of the assembly formed by tub 15, drum 13, and motor 21 that form the oscillating group plus the weight of the maximum volume of wash water present in tub 15 and the maximum possible weight of laundry present in drum 13 that, during the rotation of drum 13 during the washing and centrifuging processes, exerts forces that afford the mentioned oscillations, the transmission of which to the washing machine housing can be mitigated by means of employing oscillation dampers 1.
  • this oscillating group In a washing machine with a capacity of 7 kg of laundry, this oscillating group usually has a weight of 42 kg to 48 kg and the maximum total weight of the water and laundry is usually about 15 kg.
  • oscillation damper 1 comprises a fixed support 2 fixably mounted to lower base 20 of housing 10, support 2 mounted to pivot shaft 3, radial friction element 4 mounted to an intermediate portion of pivot shaft 3, swiveling lever 5 associated with radial friction element 4 with lugs 5, 5b, 5c with free ends 5a articulable to support element 24, and elastic element 6, 6'.
  • the radial friction element 4 is designed so that the torsional force generated by friction that opposes the rotation of swiveling lever 5 corresponds to a proportional part of the load of the oscillating group received by support element 24 to which swiveling lever 5 is articulable.
  • pivot shaft 3 The ends of pivot shaft 3 are mounted respectively in first end socket 2a and second end socket 2b from fixed support 2.
  • an elastic element 6, 6' comprising first helical spring 6 with windings arranged around pivot shaft 3 between first end socket 2a and radial friction element 4 and second helical spring 6' with windings arranged around pivot shaft 3 between second end socket 2b and radial friction element 4 is provided, to generate a torsional elastic force in addition to the said torsional frictional force.
  • First end 6a of first helical spring 6 is connected to first lug 5b while its second end 6b is connected to second end socket 2b.
  • second helical spring 6' is connected through its first end 6a' to second lug 5c and through its second end 6b' to second end socket 2b.
  • Figure 4 shows that first end 6a, 6a' of each helical spring 6, 6' is joined together forming an integrated elastic element to give better stability to the oscillation damper 1.
  • first end 6a, 6a' of each helical spring 6, 6' is connected to lugs 5b, 5c near to pivot shaft 3.
  • helical springs 6, 6' are capable of opposing a torsional force to the rotation swiveling lever 5 induced by the oscillations transmitted by support element 24.
  • Free ends 6a of lugs 6b, 6c comprise both through holes 8 through which pivot shaft 28 ( Figure 2 ) extends by means of second rotational joint 27 by which support element 24 is articulated to lugs 5b, 5c to form swiveling lever 5.
  • First end 6a, 6a' of each helical spring 6, 6' is connected to swiveling lever 5 permitting a limited rotation of swiveling lever 5 without opposing the torsional force. According to what is illustrated in Figures 4 through 9 , this is achieved due to first end 6a, 6a' of each helical spring 6, 6' slides in a guide slot in 8, 8' in swiveling lever 5, that is, the first end of first helical spring 6 slides in first guide slot 7 in first lug 5b during the limited rotation of swiveling lever 5, and the first end of second helical spring 6' slides in second guide slot 7' in the second lug during the limited rotation of swiveling lever 5. Guide slots 7, 7' extend perpendicularly with respect to pivot shaft 3.
  • Each guide slot 7, 7' comprises upper guide 7a, 7a', lower guide 7b, 7b' and supporting wall 7c, 7c' that is arranged between first ends of upper guide 7a, 7a) and of lower guide 7b, 7b', an on which first end 6a, 6a' of helical spring 6, 6' is supported when swiveling lever 5 is subjected to the load of the oscillating group received by support element 24 to which swiveling lever 5 is articulable.
  • guide slot 7, 7' is a recess comprising an access opening 7e, 7e' between the second ends of upper and lower guides 7a, 7a'; 7b, 7b' opposite to supporting wall 7c, 7c'.
  • guide slot 7, 7' is a notch comprising retaining wall 7b, 7b' arranged between the second ends of upper and lower guides 7a, 7a'; 7b, 7b' opposite to supporting wall 7c, 7c'.
  • Radial friction element 4 comprises outer bushing 30 with inner passage 4a and associated with swiveling lever 5, and inner bushing 31 rotatably enclosed in outer bushing 30.
  • Inner bushing 31 comprises outer wall 31a facing inner wall 30a of outer bushing 30 and inner axial passage 31 b in which is radially arranged internal friction means 32 that radially encircle pivot shaft 3 exerting a frictional force to damp the rotational movement between pivot shaft 3 and inner bushing 31, and therefore between pivot shaft 3 and outer bushing 30.
  • Internal friction means 32 is four pads of an elastic material with a cross-section in the shape of a circular ring segment, each of which is inserted under pressure between four equidistant internal radial projections 31c that emerge toward the interior of inner passage 4b and pivot shaft 3.
  • a rotation limiting system comprising four axial channels 34 with a cross-section in the shape of a limited circular ring segment, each of which is between two radial end stop surfaces 35 placed between inner bushing 31 and outer bushing 30.
  • axial channels 34 In axial channels 34 is enclosed two rotation limiting elements 30b, 31b, 33 in the form of two internal axial protrusions 30b that emerge from opposite sides of inner wall 30a of outer bushing 30, two external axial protrusions 31b that emerge from opposite sides of outer wall 31a of inner bushing 31, and four sliding locking elements 33, each one of which is arranged between one of the internal protrusions 30b and one of the external protrusions 31b.
  • Sliding locking elements 33 are also pads of an elastic material with a cross-section in the shape of a circular ring segment inserted under pressure into corresponding axial channel 34. Stop surfaces 35 are formed by the axial sides opposite to the internal and external protrusions 30b and 31b. Sliding locking elements 33 have a radial extension less than axial channels 34 so as to be moveable in axial channel 34 along the length of a free path limited by said stop surfaces 35, corresponding to a 1° to 4° arch, that is outer bushing 30 and inner bushing 31 can themselves rotate between 1° to 4° before internal friction elements 32 oppose a frictional force to rotation between pivot shaft 3 and outer bushing 30.
  • damper 1 provides for a limitation that is not only provided by hard stops as defined by the system detailed above but that also includes some soft limitation due to the action of the elastic element 6, 6'.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Vibration Prevention Devices (AREA)
  • Vibration Dampers (AREA)
  • Springs (AREA)

Claims (14)

  1. Amortisseur d'oscillation (1) pour un appareil électroménager (9), avec : un support (2) adapté afin d'être monté de manière fixe sur une partie inférieure de la carcasse (10) de l'appareil électroménager (9) dans laquelle est logé un groupe d'oscillation comprenant une cuve (15) dans laquelle un tambour (13) tourne autour d'un arbre de rotation (16) ; un arbre de pivotement (3) monté sur un premier emboitement terminal (2a) et un deuxième emboitement terminal (2b) du support (2) ; un élément de friction radial (4) monté sur une partie intermédiaire de l'arbre de pivotement (3) ; un levier oscillant (5) associé à l'élément de friction radial (4), avec une extrémité libre (5a) articulable sur un élément de support (24) articulable sur une partie inférieure de la cuve (15) recevant une charge du groupe d'oscillation ; caractérisé en ce qu'il comprend un élément élastique (6, 6') possédant un premier ressort hélicoïdal (6) dont les enroulements sont disposés autour de l'arbre de pivotement (3) entre le premier emboitement terminal (2a) et l'élément de friction radial (4) et un deuxième ressort hélicoïdal (6') dont les enroulements sont disposés autour de l'arbre de pivotement (3) entre le deuxième emboitement terminal (2b) et l'élément de friction radial (4) ; chaque ressort hélicoïdal ayant une première extrémité (6a, 6a') reliée au levier oscillant (5) et une deuxième extrémité (6b, 6b') reliée audit support (2) de manière à opposer une force de torsion à la rotation du levier oscillant (5) et en ce que la première extrémité (6a, 6a') de chaque ressort hélicoïdal (6, 6') glisse dans une fente de guidage (7, 7') du levier oscillant (5), ce qui permet une rotation restreinte du levier oscillant (5) sans s'opposer à la force de torsion.
  2. Amortisseur d'oscillation (1) selon la revendication 1, caractérisé en ce que : le levier oscillant (5) comprend deux oreilles (5b, 5c) articulables sur l'élément de support (24) ; le premier ressort hélicoïdal (6) est relié en sa première extrémité (6a) à l'une (5b) des oreilles et en sa deuxième extrémité (6b) au premier emboitement terminal (2a) ; et le deuxième ressort hélicoïdal (6') est relié en sa première extrémité (6a') à l'autre oreille (5c) et en sa deuxième extrémité (6b') au deuxième emboitement terminal (2b).
  3. Amortisseur d'oscillation (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que la première extrémité (6a, 6a') de chaque ressort hélicoïdal (6, 6') est reliée au levier oscillant (5) à proximité de l'arbre de pivotement (3).
  4. Amortisseur d'oscillation (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les premières extrémités (6a, 6a') de chaque ressort hélicoïdal (6, 6') sont reliées l'une à l'autre et constituent un élément élastique intégré.
  5. Amortisseur d'oscillation (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que les premières extrémités (6a, 6a') des ressorts hélicoïdaux (6, 6') glissent dans la fente de guidage (7, 7') durant la rotation restreinte du levier oscillant (5), et qui s'étend perpendiculairement à l'arbre de pivotement (3) ; et la fente de guidage (7,7') comprend un guide supérieur (7a, 7a'), un guide inférieur (7b, 7b') et une paroi de support (7c, 7c') disposée entre les premières extrémités du guide supérieur (7a, 7a') et du guide inférieur (7b, 7b'), et sur laquelle la première extrémité (6a, 6a') du ressort hélicoïdal (6,6') est soutenue lorsque le levier oscillant (5) est soumis à la charge du groupe oscillant reçue par l'élément de support (24) sur lequel le levier oscillant (5) est articulable.
  6. Amortisseur d'oscillation (1) selon la revendication 5, caractérisé en ce que la fente de guidage (7, 7') comprend une paroi de retenue (7d, 7d') disposée entre les deuxièmes extrémités des guides supérieur et inférieur (7a, 7a' ; 7b, 7b') en vis-à-vis de la paroi de support (7c, 7c').
  7. Amortisseur d'oscillation (1) selon la revendication 5, caractérisé en ce que la fente de guidage (7, 7') est un retrait comprenant un orifice d'accès (7e, 7e') entre les deuxièmes extrémités des guides supérieur ou inférieur (7a, 7a' ; 7b, 7b') en vis-à-vis de la paroi de support (7c, 7c').
  8. Amortisseur d'oscillation (1) selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'élément élastique est conçu de manière à ce que la force de torsion qu'il oppose à la rotation du levier oscillant (5) représente 80-90% de la charge du groupe oscillant transmise par l'élément de support (24) sur lequel le levier oscillant (5) est articulable.
  9. Amortisseur d'oscillation (1) selon l'une quelconque des revendications précédentes, caractérisé en ce que : l'élément de friction radial (4) comprend une bague de palier extérieure (30) associée au levier oscillant (5) ; la bague de palier extérieure (30) est en mesure de décrire un mouvement de rotation par rapport à l'arbre de pivotement (3) et ; l'élément de friction radial (4) comprend également un moyen de friction interne (32) qui encercle radialement l'arbre de pivotement (3) en exerçant une force de friction afin d'atténuer le mouvement de rotation entre l'arbre de pivotement (3) et la bague de palier extérieure (30).
  10. Amortisseur d'oscillation (1) selon la revendication 9, caractérisé en ce que l'élément de friction radial (4) comprend une bague de palier intérieure (31) logée dans la bague de palier extérieure (30) et en mesure de décrire une rotation, la bague de palier intérieure (31) comprenant une paroi extérieure (31a) en vis-à-vis d'une paroi intérieure (30a) de la bague de palier extérieure (30) et un passage axial interne (31 b) dans lequel le moyen de friction interne (32) est disposé radialement et exerce une force de friction au moins sur la bague de palier interne (31) ; la rotation entre la bague de palier interne (31) et la bague de palier externe (30) est limitée par un système de limitation de la rotation comprenant au moins un canal axial (34) placé entre la bague de palier intérieure (31) et la bague de palier extérieure (30) et au moins un élément de limitation de la rotation (30b, 31 b, 33) disposé dans le canal axial (34) ; le canal axial (34) possède une section sous forme de segment d'anneau circulaire délimité entre deux surfaces d'arrêt radiales terminales (35) ; chaque élément de limitation de la rotation (30b, 31 b, 33) est sélectionné parmi des projections (30b) émergeant de la paroi intérieure de la bague de palier extérieure, des protrusions (31 b) émergeant de la paroi extérieure de la bague de palier intérieure, des éléments de blocage du glissement (33) et des combinaisons de ceux-ci ; et chaque élément saillant (30b, 31 b) est déplaçable à l'intérieur du canal correspondant (34) de telle manière que, lorsque la bague de palier extérieure (30) et la bague de palier intérieure (31) décrivent une rotation l'une par rapport à l'autre, chaque élément saillant (30, 31 b) évolue librement dans le canal axial (34) limité par lesdites surfaces d'arrêt (35).
  11. Amortisseur d'oscillation (1) selon la revendication 10, caractérisé en ce que la libre évolution de rotation entre la bague de palier extérieure (30) et la bague de palier intérieure (31) correspond à un arc de 1° à 4°.
  12. Appareil électroménager (9), comprenant une carcasse (10) qui loge un groupe d'oscillation comprenant une cuve (15) dans laquelle un tambour (13) tourne, actionné par un moteur (21), la cuve (15) étant reliée sur le dessus à la carcasse (10) par au moins une paire de ressorts de soutien (17) et sur le dessous par au moins deux éléments de support (24) reliés à un système d'amortissement d'oscillation, chaque élément de support (24) étant articulé sur la carcasse (10) par l'insertion d'au moins une articulation (26, 27, 29) comprenant un élément de friction radial (4), caractérisé en ce que le système d'amortissement d'oscillation comprend une pluralité d'amortisseurs d'oscillation (1) tels que définis dans l'une des revendications 1 à 11, chaque amortisseur d'oscillation (1) possédant un levier oscillant (5) articulé sur l'un des éléments de support (24).
  13. Appareil électroménager (9) selon la revendication 12, caractérisé en ce que les amortisseurs d'oscillation (1) sont montés sur des faces opposées de la carcasse (10) et en ce que les amortisseurs d'oscillation (1) sont conçus afin d'opposer des forces de torsion qui représentent conjointement 80-90% de la charge du groupe oscillant reçue par les éléments de support (24) articulés aux leviers oscillants (5).
  14. Appareil ménager (9) selon l'une des revendications 12 et 13, prenant la forme d'un lave-linge (9) ou d'un sèche-linge (9).
EP13821971.2A 2012-11-09 2013-10-24 Amortisseur d'oscillation pour application domestique ayant un tambour tournant et appareil électroménager comprenant l'amortisseur Active EP2917396B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201231712A ES2460393B1 (es) 2012-11-09 2012-11-09 Amortiguador de oscilaciones para un aparato doméstico con tambor giratorio, y aparato doméstico que comprende el amortiguador
PCT/IB2013/059598 WO2014072860A2 (fr) 2012-11-09 2013-10-24 Amortisseur d'oscillation pour application domestique ayant un tambour tournant et appareil électroménager comprenant l'amortisseur

Publications (2)

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EP2917396A2 EP2917396A2 (fr) 2015-09-16
EP2917396B1 true EP2917396B1 (fr) 2016-08-24

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EP (1) EP2917396B1 (fr)
CN (1) CN104769177B (fr)
ES (1) ES2460393B1 (fr)
PL (1) PL2917396T3 (fr)
RU (1) RU2613779C2 (fr)
WO (1) WO2014072860A2 (fr)

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Publication number Priority date Publication date Assignee Title
ES2592570B1 (es) * 2015-05-29 2017-09-08 Bsh Electrodomésticos España, S.A. Dispositivo de amortiguación
ES2592572B1 (es) * 2015-05-29 2017-09-08 Bsh Electrodomésticos España, S.A. Dispositivo de amortiguación de vibraciones, aparato electrodoméstico y procedimiento de fabricación de dicho dispositivo
ES2592571B1 (es) * 2015-05-29 2017-09-08 Bsh Electrodomésticos España, S.A. Dispositivo de amortiguación
CN106162409A (zh) * 2016-08-16 2016-11-23 深圳市冠旭电子股份有限公司 头戴式耳机及其转动机构
ES2672637B1 (es) * 2016-12-15 2019-03-26 Bsh Electrodomesticos Espana Sa Dispositivo de amortiguación de vibraciones y aparato doméstico que comprende el dispositivo de amortiguación de vibraciones
CN107675391A (zh) * 2017-11-04 2018-02-09 繁昌县清新水洗有限责任公司 一种布料脱水机用支撑底座
JP7283964B2 (ja) * 2019-04-22 2023-05-30 株式会社ディスコ 加工装置

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Publication number Priority date Publication date Assignee Title
US1015015A (en) * 1910-08-25 1912-01-16 Maximilian K Golden Shock-absorbing device.
AT218995B (de) * 1959-05-08 1962-01-10 Bosch Gmbh Robert Trommelwaschmaschine
FR1408825A (fr) * 1964-07-01 1965-08-20 Hotchkiss Brandt Perfectionnement aux amortisseurs à friction pour machines à laver le linge à tambour
DE102005038953A1 (de) 2005-08-16 2007-02-22 Suspa Holding Gmbh Dämpfer
ES2387205B1 (es) * 2010-11-26 2013-09-16 BSH Electrodomésticos España S.A. Aparato doméstico, en especial, máquina lavadora o secadora
CN102652193B (zh) * 2009-12-10 2016-02-10 Bsh家用电器有限公司 家用电器，尤其是洗衣机或者干燥机

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Publication number Publication date
EP2917396A2 (fr) 2015-09-16
ES2460393A2 (es) 2014-05-13
PL2917396T3 (pl) 2017-02-28
ES2460393R1 (es) 2014-06-13
CN104769177B (zh) 2017-03-01
CN104769177A (zh) 2015-07-08
RU2613779C2 (ru) 2017-03-21
RU2015118325A (ru) 2016-12-27
WO2014072860A2 (fr) 2014-05-15
ES2460393B1 (es) 2015-06-02
WO2014072860A3 (fr) 2014-07-03

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