Classifications

• • 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
  • D06F37/26—Casings; Tubs
  • D06F37/266—Gaskets mounted between tub and casing around the loading opening

Definitions

• the invention relates to a domestic appliance for the care of laundry items, with a drum for receiving the laundry items, which is rotatably mounted about a substantially horizontal axis of rotation.
• the domestic appliance further comprises a tub, which is arranged at a front end edge web of the drum delimiting a feed opening of the drum by a gap spaced from the drum.
• the domestic appliance comprises a sleeve, which is arranged in the region between the drum and a housing of the household appliance.
• Domestic appliances for the care of laundry items such as a washing machine, for example, can be designed as a front loader washing machines.
• the cuff mentioned in such washing machines has the function to ensure a seal of the tub together with the sight glass of the window of the door to close the feed opening.
• the cuff should ensure the function of bridging the distance between the tub and the housing of the washing machine. Last but not least, it should also be prevented that items of laundry or small parts from the drum get into the tub.
• the sleeve In known washing machines, the sleeve is usually attached to the front wall of the washing machine and the tub. In the area of attachment to the tub, the cuff has a circumferential ridge, which is spaced from the drum, so that the rotating drum does not touch the cuff and damaged.
• the web can be formed so that it forms only an axial gap to the drum. But it can also be designed so that it surrounds the front edge of the drum spaced and then in addition a radial gap is formed to the drum. The distance is determined by the shape and position tolerances of the components involved and by the deformation of the components under load.
• the sleeve usually has wrinkles, so that the tub can oscillate.
• a tub formed rigidly on the housing of the washing machine is provided.
• the drum is mounted elastically outside of the tub.
• the sleeve seals the opening of the tub in the region of the housing opening together with the sight glass of the window similar to the above-mentioned embodiment.
• the sleeve in the lower region is arranged at a distance around the front edge of the drum, so that gaps are present.
• An inventive household appliance for the care of laundry comprises a drum for receiving the laundry items.
• the drum is in particular cylindrically shaped and has a feed opening on the front side.
• the drum is rotatably mounted in the household appliance about a substantially horizontal axis of rotation. Embodiments both the axis of rotation is slightly inclined relative to the horizontal, in particular less than 25 ° inclined, are also regarded as a substantially horizontal axis of rotation.
• the domestic appliance further comprises a tub, which is arranged at a front end edge web of the drum delimiting a feed opening of the drum by a gap spaced from the drum.
• the domestic appliance comprises a sleeve, which is arranged in the region between the drum and a housing of the household appliance.
• the collar is connected to a sliding device, which has at least one sliding element.
• the sliding device is mounted on the edge web of the drum.
• connect can be understood to mean a rigid and therefore fixed arrangement of the components, in which relative movement is no longer possible.)
• the term “connect” also includes only abutting one another and a relative movement between the components considered is possible. It is essential that in all alternatives relating to the term “connect” between the components sleeve, slider and edge web of the drum always a relative movement between the sleeve and the edge web of the drum is guaranteed, so that the slider fixed to the sleeve or fixed to the edge web
• the sliding device may or may not be integral with the sleeve, but it is within the scope of the invention to provide the slider as a component separate from the sleeve and, in particular, to attach it separately to the tub.
• this embodiment of the components sleeve, sliding device and drum also ensures that even with moving drum in the radial direction, for example when loading the drum or even during spin, no such undesirable gaps between the sleeve and the drum occur. Also, thus not only in the unloaded idle state of the drum, the occurrence of such unwanted gaps can be prevented by the invention, but also be ensured during operation of the domestic appliance.
• the at least one sliding element of the sliding device is mounted at least on an outer side of the edge web of the drum. This is a particularly advantageous storage location, since thereby the area of the feed opening not is unnecessarily limited and on the other hand, this positional arrangement of the components can be guaranteed each other especially for radial movements.
• the at least one sliding element of the sliding device extends forwards over the edge web.
• the design and arrangement of the sliding element is such that the front side of the edge web of the drum is at least partially covered by the sliding element. This is also particularly advantageous with regard to the positional stability of the components relative to one another and the particularly secure avoidance of undesired gap formation during relative movement of the components relative to one another.
• the region of the sliding element which extends forwards over the edge web projects over the front side of the edge web of the drum so that it is virtually completely covered.
• a flush transition is provided in this regard on the inside of the edge web of the drum and on the inside of the sliding element.
• the front side of the edge web of the drum is thus encompassed by the sliding element, which also applies to the outside of the edge web of the drum.
• the sliding device as seen at least in the radial direction to the axis of rotation of the drum, is coupled in a motion-coupled manner with the edge web in the radial direction. This is particularly advantageous because even if the drum does not remain in its unloaded resting state, but even if it is loaded or turns, almost any time the relative position between the slider and the edge web of the drum can be maintained. Thus, even in specific operating phases of the domestic appliance, an undesirable gap formation between the sleeve and the edge web of the drum can be prevented.
• the sliding device is also movement-coupled in the axial direction to the axis of rotation of the drum with the edge web of the drum in the axial direction.
• a particularly quasi-fixed positioning between the slider and the edge web of the drum is guaranteed, so that here also no undesirable gaps between the sleeve and the edge web of the drum occur in two different spatial directions.
• the outside of the edge web of the drum has a recess into which an engagement element of the sliding element is engaged.
• an engagement element of the sliding element is engaged.
• this configuration which can be formed, for example, as a groove in the outside, a particularly mechanically stable low-wear storage can be ensured.
• this also ensures the desired relative movement about the axis of rotation of the drum between the drum and the sliding device and thus also the sleeve particularly advantageous.
• a sliding element has a depression, in which an edge region of the sleeve, in particular a cross-sectionally U-shaped edge region, is fastened.
• a nondestructive permanent connection such as an injection molding may be provided.
• the sliding element is a plastic component to which the flexible sleeve is then molded.
• a non-destructively reversible separable and reassemblable connection can be provided.
• connections can be provided with a clip or locking elements or other components.
• the recess is formed on the outside of the sliding element. It is a particularly space-saving and the loading opening not affecting design.
• the depression on the outer side of the sliding element is arranged in front of the front side of the edge web of the drum.
• a particularly flat design can be designed in the radial direction, because then advantageously the sliding element extends over the front side of the edge web of the drum or inwardly and in this forward on the extending area then on the outside of the sliding element the recess for the cuff is formed.
• a sliding element is rigid, in particular in comparison to the sleeve rigid, formed.
• a sliding element is mechanically very stable and low-wear and takes into account the mechanical stability in the relative movement between the drum and the cuff.
• the sliding device has a single sliding element, which is designed as a one-piece component as a ring.
• the sliding device has at least two sliding elements, which are formed as circular sections and which are arranged spaced apart in the circumferential direction.
• the sleeve is arranged with the slider to the edge web of the drum at those points where a slider is arranged, viewed in the radial and axial direction without a gap.
• a gap-free arrangement is understood to mean an embodiment in which at most only a minimal amount of air space in the radial direction occurs between these components at said location.
• a direct contact is also provided, wherein the material design of the components is selected such that a relative movement between the components can be carried out without problems.
• the cuff is directly connected to the housing of the household appliance with a front edge and attached thereto.
• the tub is movably mounted in the household appliance. It is also arranged in particular relatively movable to the housing and the sleeve has, viewed in the radial direction, further outwardly than the connection in the sliding device, a connection tab for connection to the tub.
• a connection of the sleeve to the tub which can move in this embodiment relative to the housing of the domestic appliance, arranged at a very specific and particularly suitable location.
• this connecting plate is arranged so that it surrounds a cross-sectionally in the radial direction outwardly bent edge web of the tub.
• this connection tab of the sleeve is arranged in a recess on the outside of the edge web of the tub U-shaped.
• the tub in a further alternative embodiment, in particular front side, fixedly connected to the housing. It can be provided that it is connected only in the region of the connection of the housing with the sleeve to the housing.
• the sliding device in particular a sliding element, is mounted on the outside of the edge web of the drum by a sliding surface, in particular a segmented sliding surface, or by a roller or a ball bearing.
• a sliding surface in particular a segmented sliding surface, or by a roller or a ball bearing.
• the sleeve is mounted in the region of the drum opening on the neck of the drum, so that there is virtually no gap between the fixed sleeve and the drum.
• the sleeve is firmly connected to the sliding ring and the drum is rotatable relative to the sliding element and thus also to the sleeve
• a particular annular sliding element is attached to the edge web of the drum and thus on the drum neck and the sleeve is mounted on this slider.
• Axial movements of the drum with respect to the fixed sleeve are made possible by displacements of the sliding element on the sliding surface of the edge web of the drum.
• the cuff also has a fold or a plurality of folds to compensate for radial movements of the drum.
• the sleeve in the radial direction only a low rigidity, so that only small forces are exerted on the bearing surfaces.
• a closed bearing device is provided on the edge web of the drum, which is formed from a comparable sliding device, as explained above.
• the bearing unit is also at least partially filled with a medium for reducing the friction between the edge web of the drum and the sliding element.
• This medium can be liquid, oily or gel-like.
• Preferred embodiments are to be seen in the fact that in a relative to the housing of the household appliance movably mounted tub, the slider with the rigidly attached sleeve relative to the edge web of the drum in the direction of rotation of the drum about its axis of rotation movable and the slider is positioned fixed axially and radially to the edge web ,
• it may be provided in a fixed relative to the housing of the domestic appliance tub that the cuff fixed to the sliding device in the axial direction of the drum to the drum displaceable, but in the radial direction is fixed thereto positionally fixed, and a further relative movement between the slider and the drum is guaranteed about its axis of rotation.
• a preferred third variant is to be seen to the effect that in a relative to the housing of the household appliance fixed tub the cuff with the sliding device is firmly connected and the sliding device and thus the sleeve is arranged fixed in position both in the axial and in the radial direction to the drum with the drum, but a relative movement between the slider and the drum is ensured in the direction of rotation of the drum.
• FIG. 1 is a schematic perspective view of an embodiment of a domestic appliance for the care of laundry items
• FIG. 2 is a sectional view of a first embodiment of the domestic appliance
• FIG. 3 is a sectional view of a partial section of a further embodiment of a domestic appliance
• Fig. 4 is a further sectional view of a partial section of another embodiment of a domestic appliance.
• FIG. 1 a household appliance for the care of laundry is shown in a schematic perspective view, which is a washing machine 1.
• the washing machine 1 has an outer housing 2.
• it comprises a drum 3, which is cylindrical and is provided for receiving laundry.
• the washing machine 1 is designed as a front loading washing machine, which means that they on the front side comprises a feed opening 4 which can be closed by a door 5.
• the door 5 has a viewing window.
• the drum 3 is rotatably mounted about a substantially horizontal axis of rotation A.
• the washing machine 1 comprises a tub 6, which surrounds the drum 3 circumferentially.
• FIGS. 2 to 4 each show sectional views along the section line II in FIG. 1. They therefore represent intersections in the yz plane, looking in the direction of the positive x-direction.
• a partial section of the washing machine 1 is shown.
• the housing part 2a is shown.
• the drum 3 is shown.
• the edge web has an outer side 8 and a front side 9.
• the tub 6 is arranged at a distance from the drum 3.
• the tub 6 is relatively movable to the housing 2 and thus also mounted to the housing part 2a.
• a sleeve 10 is arranged made of an elastic material.
• Cuff 10 is firmly connected at its front end 1 1 with the housing part 2a.
• a hook-shaped in cross-section region of the housing part 2 a of the front end 1 1 of the sleeve 10 is encompassed.
• the sleeve 10 is formed in the y-direction and thus in the radial direction to the axis of rotation A of the drum 3 with one or more folds.
• the sleeve 10 is also formed with a connecting plate 12 which is fixedly connected to a front edge web 13 of the tub 6.
• this front edge web 13 viewed in the radial direction, has an outwardly curved curvature, so that, as it were, a depression forms in the cross-section into which the connecting plate 12 is introduced in a U-shape.
• the connecting strap 12 thus lies substantially on the outside of this edge web 13 of the tub 6.
• this connecting plate 12 is formed thicker in cross-section than the other portion of the sleeve 10 between the connecting plate 12 and the front end 1 first
• the sleeve 10 is connected to a sliding element 14 of a sliding device 15.
• a position-stable fixed connection is provided in this regard.
• the sleeve 10 is permanently connected to the sliding element 14.
• the material of the sleeve 10 may be molded onto the sliding element 14.
• the sliding member 14 may be a one-piece ring.
• the sliding device 15 comprises a plurality of separate sliding elements 14, which are each formed as ring sections and spaced apart in the circumferential direction about the rotation axis A to each other.
• a rear end 16 of the sleeve 10 is U-shaped in cross-section and embedded in a recess 17 of the sliding member 14.
• the recess 17 is formed on an outer side 18 of the sliding member 14.
• an outer side 19 of the edge web 7 of the drum 3 has a recess 20 into which an engagement element 21 of the sliding element 14 is introduced.
• the sliding element 14 is formed on the side facing the edge web 7 such that virtually the outside 8 and the front side 9 are quasi covered by this sliding element 14.
• the sliding member 14 thus extends in the axial direction and thus in the direction of the axis of rotation A also forward over the front side 9 of the edge web 7 over.
• this is Cover the front 9 maximally flush, so that the sliding member 14 does not extend further inward into the feed opening 4 as the edge web. 7
• the tub 6 is relatively movable to the housing 2 and thus also arranged to the housing part 2a.
• a lubricity supporting medium which may be, for example, liquid or oily or gel-like, introduced.
• Fig. 3 a partial section of a further embodiment is shown in a sectional view.
• the sliding element 14 has no engagement element 21 and the edge web 7 has no depression 20.
• the sleeve 10 is fixedly connected to sliding member 14 and the drum 3 can rotate about the axis A relative to the sliding member 14 and thus also to the sleeve 10.
• tub 6 is firmly connected to the housing part 2a.
• a mechanically fixed connection to the hook-shaped end region is provided. This can also be provided locally equal to the connection of the front end 1 1 of the sleeve 10.
• Fig. 4 is a sectional view of a partial section of another embodiment of a washing machine 1 is shown.
• This is analogous to the embodiment in Fig. 3 designed, the difference from the embodiment in Fig. 3 is that here again a recess 20 in the edge web 7 of the drum 3 and complementary to an engagement member 21 is formed on the sliding member 14.
• Fig. 4 thus an embodiment is shown in which the tub 6 fixed to the housing part 2a is connected and on the other hand, the sleeve 10 is coupled in motion both in the radial and in the axial direction via the sliding member 14 with the edge web 7 of the drum 3.
• This means that axial and / or radial movements of the edge web 7 are also carried out analogously to the sliding element 14 and thus the sleeve 10.
• an axial and / or radial movement coupling and position fixation means a configuration in which the movement of the drum 3 and thus of the edge web 7 causes a quasi-analogous movement of the sliding element 14.
• the distance between the sliding element 14 and the edge web 7 thus remains the same depending on the embodiment in the axial and / or radial direction, when the drum 3 moves in corresponding directions.
• the relative movement in the direction of rotation about the axis of rotation A is not formed between the drum 3 and the sliding element 14, but that the sliding element 14 is fixed rigidly and firmly to the drum 3, in particular the edge web 7, and the sleeve 10 is mounted relatively movably in the sliding member 14.
• the sliding element 14 would then also move with a movement of the drum 3 and a relative movement, in particular rotation, between the sliding element 14 and the sleeve 10 would occur.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
• Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
• Treatment Of Fiber Materials (AREA)
• Detail Structures Of Washing Machines And Dryers (AREA)
• Centrifugal Separators (AREA)

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• 2010
  • 2010-05-03 DE DE102010028492A patent/DE102010028492A1/de not_active Withdrawn
• 2011
  • 2011-04-08 PL PL11712866T patent/PL2567013T3/pl unknown
  • 2011-04-08 WO PCT/EP2011/055466 patent/WO2011138121A1/de active Application Filing
  • 2011-04-08 EA EA201291128A patent/EA021197B1/ru not_active IP Right Cessation
  • 2011-04-08 EP EP11712866.0A patent/EP2567013B1/de active Active
  • 2011-04-08 CN CN201180022332.4A patent/CN102884241B/zh active Active

Patent Citations (6)

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