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
  • D06F37/20—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
  • D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
• • 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
  • D06F37/02—Rotary receptacles, e.g. drums

Definitions

• the invention relates to a household appliance for the care of items of laundry, with a housing in which a laundry drum is rotatably mounted, and with at least one annular unbalance compensation device for compensating a due to asymmetrically distributed in the laundry drum laundry items unbalance of the rotating laundry drum, which on the laundry drum is arranged.
• an annular unbalance compensating device also known as a "ball balancer" - to the laundry drum an annular hollow housing in which a balancing mass is provided, for example in the form of a plurality of spherical compensating elements.
• This balancing mass is movably mounted in the interior of the housing and during operation of the washing machine tends to contact one of the unbalanced masses Diameter of the laundry drum - to move the opposite side, thus creating a counterweight for the imbalance mass and consequently overall balance.
• US 201 1/0203325 A1 describes a solution for fastening an imbalance compensation device, in which the housing of the Unbalance compensation device is molded onto an axial end wall of the laundry drum.
• a screw connection between an imbalance compensation device and a laundry drum is proposed, for example, in EP 2 154 285 A1.
• a hook is generally also called, which can be provided as a holding element for the imbalance compensation device, but given no further information on how the hook could be formed and where it is accurately fixed.
• the KR 10 2008 037 420 A describes an arrangement in which an imbalance compensation device is fixed via a latching connection to a laundry drum.
• locking elements are formed on a radial outer circumference of a housing of the unbalance compensation device, which are engaged in corresponding latching openings of the laundry drum.
• the latching elements lie axially against an edge delimiting the respective latch opening, so that a positive connection is formed in the axial direction.
• Such a latching connection has in particular the disadvantage that it may come to a release of the latching connection.
• An inventive household appliance for the care of laundry comprises a housing in which a laundry drum is rotatably mounted.
• the domestic appliance further comprises at least one annular unbalance compensating device for compensating an unbalance caused by laundry items distributed asymmetrically in the interchangeable drum when the laundry drum is rotating, and this annular unbalance compensating device is arranged on the laundry drum.
• the at least one retaining element is attached to the imbalance compensation device and has a relative to a longitudinal axis of the laundry drum radially outwardly oriented and ramped spring clip.
• This spring clip is snapped in the mounted end state of the support member and thus also the imbalance compensation device viewed in the radial direction to this longitudinal axis of the laundry drum in a recess in a wall of the laundry drum to the outside.
• the imbalance compensation device can be easily and thus also easy to install and yet is stably positioned.
• the unbalance compensation device is also mounted resiliently in the radial direction to some extent. This can be during operation of the household appliance and thus in turning Laundry drum even with remaining but very small imbalances unwanted local and large radial forces between the imbalance compensation device and the laundry drum are avoided or be well received by radial relative movement and dismantled.
• an imbalance compensation device in the present case a device which is designed to compensate and thus to prevent imbalances of the laundry drum.
• the unbalance compensation device can have a compensating mass arranged movably in the housing, for example in the form of a plurality of spherical elements.
• Such an imbalance compensation device can also be referred to as a "ball balancer”.
• the holding element is designed as a multiply bent, one-piece strip.
• the holding element is constructed very compact, in particular in the azimuthal direction about the longitudinal axis.
• the stability of the retaining element in itself is increased by the multiple bending, viewed in the direction of the longitudinal axis of the retaining element.
• the holding element has a Umgriffs Council.
• This Umgriffs Scheme surrounds a coupling bridge.
• the coupling web is integrated on a compensating elements receiving housing of the balancing device and thus integrally formed.
• This wraparound region of the retaining element engages around this coupling web on three sides in such a way that it is disposed adjacent to these three sides.
• a very stable attachment of the retaining element to the housing of the imbalance compensation device can be achieved.
• By integration of the coupling web this is thus also arranged very stable position and does not need to be additionally attached by mounting effort on the housing.
• the coupling bridge can therefore also absorb corresponding forces.
• the coupling web is arranged on a housing wall of the housing which is in particular a radially outer wall of the housing.
• This housing wall faces a wall region of the wall of the laundry drum lying radially further outward, the recess forming in the wall region.
• the coupling web extends from the housing wall in the direction of the wall region radially outward.
• the coupling web has an undercut, in which engages the Umgriffs Scheme with a trough-shaped or hump-like engagement nose.
• This undercut is formed in particular on a rear wall of the laundry drum facing the rear side of the housing of the imbalance compensation device.
• the holding element is improved by this advantageous embodiment, the mechanical attachment and the stable positioning of the retaining element on the housing.
• the position of the undercut further has the advantage that due to the three-sided encircling and extending away from the Umgriffs Scheme spring clip then corresponding occurring leverage forces can be improved recorded. If the spring clip is acted upon in the radial direction with force, this is also transmitted to the Umgriffs Symposium.
• the local position of the undercut and also of the engagement lug is formed on a side of the wrap-around region facing away from the transition between the wrap-around region and the spring clip.
• the transition between the Umgriffs Scheme and the spring clip is therefore on a side of the coupling web, which is opposite to the side on which the undercut is formed.
• the support produced by a lever action of the transition between the Umgriffs Scheme and the spring clip on another side of the coupling web, as the undercut is formed.
• the resulting forces that occur in the radial springs of the spring clip can be accommodated improved by this concept and the coupling of this specifically shaped Umgriffs Kunststoffs with the coupling web.
• the spring clip has a free-projecting end, which comprises a tongue, which in the mounted state of the holding element against an unbalance compensation device facing inside of a recess bounding wall portion of the wall in the radial direction with respect to a longitudinal axis of the laundry drum biased outwardly biased.
• a free-projecting end which comprises a tongue, which in the mounted state of the holding element against an unbalance compensation device facing inside of a recess bounding wall portion of the wall in the radial direction with respect to a longitudinal axis of the laundry drum biased outwardly biased.
• At least three such separate holding elements are formed, which are arranged in the direction of rotation about a longitudinal axis of the laundry drum equidistant from each other.
• an azimuthally symmetrical mounting of the imbalance compensation device can be achieved, which is generated at several points by a radially outwardly acting bias and allows by the spring clip in the radial direction and thus perpendicular to the longitudinal axis a certain freedom of movement.
• a very centered mounting of the imbalance compensation device is made possible by this plurality of holding elements, which then generate radially outward spring forces from the longitudinal axis.
• the wall of the laundry drum is a jacket wall, in which this recess is designed for a holding element.
• the invention also relates to a method for attaching an imbalance compensation device to a laundry drum of a household appliance for the care of laundry items.
• at least one retaining element is attached to the unbalance compensation device before the unbalance compensation device is mounted on the laundry drum.
• Such an intermediate assembly module which comprises the imbalance compensation device and the at least one retaining element attached thereto, is then fastened to the laundry drum.
• the ramp-shaped or ski-shaped spring clip is therefore inserted with its longer run-up slope of the ramp shape in the axial direction of the longitudinal axis in a recording of the laundry drum.
• the spring clip is pressed radially inwardly, as long as it is pushed along an inner side of the wall portion of the wall of the laundry drum in the axial direction.
• the assembled end position is then reached.
• the tongue which opens to the ramp wall, in particular opens at an opposite end of the transition between the ramp wall and the run-up slope of the ramp wall, then puts in this Eininschnappen the transition into the recess with its outside to the inside of the wall portion.
• an undesirable wide radially Nachau the spring clip is prevented and maintained the desired radial biasing force of this spring clip in the assembled final state.
• top, bottom, front, rear, horizontal, vertical, depth direction, “width direction”, “height direction” are the intended use and intended arrangement of the device and then one in front of the device given standing and in the direction of the device looking observer given positions and orientations.
• Fig. 1 is a schematic front view of an embodiment of a household appliance according to the invention for the care of laundry items
• FIG. 2 shows a schematic representation of a sectional view through a region of an arrangement with a laundry drum and imbalance compensation devices according to an embodiment of the invention
• FIG. 3 shows a sectional view through an exemplary embodiment of the household appliance in the region of the laundry drum and the imbalance compensation device attached thereto
• Fig. 4 is a perspective view of another embodiment of an imbalance compensation device with a holding element attached to a housing.
• identical or functionally identical elements are provided with the same reference numerals.
• FIG. 1 is a simplified front view of a household appliance 1 for the care of laundry, which may be for example a washing machine or a washer-dryer, shown.
• the household appliance 1 comprises a housing 2, in which a laundry drum 3 is rotatably mounted.
• a rotation axis A (FIG. 2) in this embodiment in the illustration in FIG. 1 is oriented perpendicular to the plane of the figure.
• the household appliance 1 further comprises a tub 4, which is also arranged in the housing 2 and surrounds the laundry drum 3.
• the laundry drum 3 comprises a hohizylinderformigen jacket and a rear end wall and is also front open, so that here a feed opening is provided, through which laundry items in an interior 5 of the laundry drum 3 can be introduced.
• the loading opening can be closed by a door 6, which is arranged movably on the housing 2.
• FIG. 2 shows a vertical sectional illustration and thus a representation in the sectional plane relating to the yz plane. It is shown the laundry drum 3 with the hohizylinderformigen coat 7. The charging port 8 is also shown.
• the laundry drum 3 has, adjacent to a rear wall or rear end wall 9, a carrier star 10 which is fixedly connected to the laundry drum 3.
• the support star 10 is rotatably connected to a shaft 1 1, wherein the shaft 1 1 is driven by a drive motor, not shown, so that the rotation of the laundry drum 3 is effected about the axis of rotation A.
• the domestic appliance 1 in the embodiment shown comprises two Unbalance compensation devices 13 and 14.
• a plurality of carriers is arranged on the inner side 12, wherein in FIG. 2, only one driver 15 can be seen.
• the front unbalance compensation device 13 is viewed in the direction of the axis A in a front region 16 of the laundry drum 3 and in particular of the jacket 7, whereas the second unbalance compensation device 14 is arranged in a rear region 17.
• the first unbalance compensation device 13 is formed as a circumferential closed ring, which is rotationally symmetrical about the axis A oriented.
• the first unbalance compensation device 13 comprises a ring-shaped housing 18 in this respect, which in the sectional view in FIG. 2 has a recognizable quadrangular cross-section.
• This housing 18 has a cavity 19 in which one or more compensation elements 20 are arranged to be movable relative to the housing 18.
• a compensation element 20 may be a ball. It may also be arranged in addition to or instead of a liquid medium in the cavity 19.
• the second unbalance compensation device 14 is also formed, which also has a correspondingly formed housing 21, a cavity 22 inwardly therefrom and, in particular, preferably a plurality of compensating elements 23 movable in the cavity 22 relative to the housing 21.
• FIG. 3 is shown in a more detailed representation of the dashed lines in Fig. 2 area I shown. However, in contrast to FIG. 2, FIG. 3 does not show a representation in the negative x-direction but in the positive x-direction.
• the laundry drum 3 has a receiving region 24 into which the housing 18 is inserted.
• An outer wall of the laundry drum 3, which constitutes the jacket, has a fold 26 at a front region. As a result, the front region of the laundry drum 3 and thus also this jacket 7 is stabilized.
• a wall portion 25 is formed, in which a recess 27 is formed as a continuous hole.
• the housing 18 has a housing wall 18a which, viewed in the radial direction, faces this wall region 25.
• a coupling web 28 is integrated and thus formed in one piece.
• the coupling web 28 is formed in a rear region of the housing wall 18a viewed in the axial direction and thus in the direction of the longitudinal axis A and extends radially in the direction of the wall region 25.
• the unbalance compensation device 13 is connected to a holding element 29 and attached to the laundry drum 3, in particular in FIG Wall area 25, fixed.
• a plurality of such separate holding elements 29 are provided, which are arranged in the direction of rotation about the axis A equidistantly from each other.
• at least three such retaining elements 29 are provided.
• the holding element 29 is integrally formed and formed as a multi-curved strip.
• the holding element 29 is formed of metal.
• the Umgriffs Club 30 is thus formed as a U-shape and lies in particular on the entire surface of these pages 28a to 28c.
• the wrap-around region 30 comprises a hump-like engagement nose 31, which engages in a depression or notch as an example of an undercut 32.
• This undercut 32 is formed in a coupling web side 28b of the coupling web 28 formed as a rear side. This rear side is thus facing the rear wall 9.
• the retaining element 29 comprises not only the wraparound region 30 but also a spring clip 33 connected directly to the wraparound region 30 and touching it.
• the spring clip 33 extends obliquely radially outwardly starting from a transition or an attachment 34 to the surrounding region 30 and is free-standing.
• this spring clip 33 comprises a ramp wall 36, which is oriented at an angle of less than 90 ° to the run-on slope 35 and terminates thereon.
• a transition 37 between the run-up slope 35 and the ramp wall 36 is arranged in the mounted end state, as shown in Fig. 3, extending through the recess 27 therethrough.
• the spring clip 33 comprises at its free-projecting end, which faces away from the transition 37, a tongue 38.
• the tongue 38 opens onto the ramp wall 36 at an end of the ramp wall 36 facing away from the transition 37.
• this tongue 38 lies in the final assembled state, this tongue 38 on an inner side 39 of the wall portion 25 at.
• the element movable in the radial direction and resilient with respect to the spring clip 33 is held biased outwards in the radial direction.
• a radial bearing force is generated which holds the housing 18 of the laundry drum 3 and, in particular, holds the housing 18 also centered on the axis A.
• FIG. 4 shows a perspective view of an embodiment in which, in contrast to the design in FIG. 3, in particular the wrap-around region 30 of the spring clip 29 is designed differently from the embodiment in FIG. 3.
• the Umgriffs Scheme 30 surrounds the coupling web 28 even on four sides. There is also no beak-shaped and thus trough-like engagement nose 31 formed, but a strip-shaped end tab of the Umgriffs Suites 30 extends into a recess 40, so that the concern is also possible on the fourth side of the coupling web 28.
• the retaining elements 29 are fastened to the housing 18.
• the holding elements 29 are, as already stated, to the housing 18 separate parts, which are attached thereto accordingly.

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

Priority Applications (4)

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Publications (1)

Family

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Citations (7)

Family Cites Families (4)

• 2015
  • 2015-11-11 DE DE102015222222.5A patent/DE102015222222A1/de active Pending
• 2016
  • 2016-09-19 EP EP16766573.6A patent/EP3374562B1/de active Active
  • 2016-09-19 RU RU2018114972A patent/RU2684390C1/ru active
  • 2016-09-19 CN CN201680065472.2A patent/CN108291351B/zh active Active
  • 2016-09-19 PL PL16766573T patent/PL3374562T3/pl unknown
  • 2016-09-19 WO PCT/EP2016/072119 patent/WO2017080703A1/de active Application Filing

Patent Citations (7)

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