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

Definitions

• the invention relates to a household appliance with a vibration damping device according to the preamble of claim 1.
• washing machines and dryers with a laundry drum rotatably mounted in a tub usually have a vibration damping device which connects the tub with the housing.
• vibration damping device By means of the vibration damping device, vibrations and noises caused by the rotational movement of the drum are damped.
• the vibrations of the tub by means of a cylinder-piston device of
• JP 1 1 1 1 4280 A describes a washing machine with a damper, which is mounted in a direction perpendicular to the axis of rotation slidably mounted on the housing of the washing machine.
• a generic household appliance with a cylinder piston device is known as a vibration damping device which connects a tub to the housing bottom of the household appliance.
• the cylinder-piston device is slidably mounted on the housing bottom, whereby a limited sliding movement of the cylinder-piston device along the housing bottom is made possible. In this way, at least a part of the operational vibrations of the tub can be converted into a linear sliding movement of the cylinder-piston device.
• a disadvantage of such a vibration damping device is relatively complex.
• the object of the invention is to provide a household appliance with a simple assembly and component technically simple solution for a vibration damping device.
• the object is solved by the features of claim 1.
• Preferred embodiments of the invention are disclosed in the subclaims.
• the support element is articulated with the interposition of a pivot lever on the housing.
• operational vibrations of the tub in the direction of extension of the support element can be transferred to the pivot lever.
• the oscillations or vibrations introduced into the support element are at least partially converted into rotational movements by means of the pivoting lever, so that the oscillations can be at least partially damped by a pivoting of the pivoting lever.
• a vibration damping device is easy to implement component technology.
• the pivot lever can be articulated to the housing via a first rotary joint about a first housing side wall fixed pivot axis.
• the assembly process can be simplified because certain components of the first pivot can be pre-assembled on the housing.
• the connection of the tub with the housing on the vibration damping device can thus be easily configured montagetechnisch.
• the first pivot axis is at a high height away from a home appliance floor. In this way, a cavity is released under the tub, in which one can have sufficient space for other equipment components, such as a drawer, in which the user can insert the articles he desires, or to reduce the overall height of the device.
• the first pivot axis connects by means of a carrier to the housing in order to give the housing structure rigidity.
• the carrier may be a crossbar which is attached to the corners of the side wall so as not to contact them and not transmit the vibrations to them. In this way, vibrations are better absorbed.
• the carrier may even be a journal which extends in the direction of the first pivot axis to the device ends and where the pivot lever is connected. This also achieves a more flexible carrier.
• the pivot lever can be articulated about a second pivot about a pivotable relative to the housing pivot axis on the support element.
• the support element can be articulated with a container-fixed third pivot on the tub.
• the pivot lever and / or the support element can be pivoted by overcoming a predetermined friction force.
• at least one of the swivel joints can have an increased frictional resistance.
• at least a part of the vibration-caused translational energy can be converted into frictional energy.
• a cylinder-piston device as a damper can be completely dispensed with.
• the first, second and / or third rotary joint have a bearing bush in which at least one bearing journal, in particular with a press fit, is rotatably mounted. In this way, a reliable and maintenance-free configuration of one or more swivel joints can be realized.
• the bearing journal of the first rotary joint can be secured against rotation on the pivot lever.
• the journal may be tubular, and is made of thermally conductive, especially metallic, material, so that the temperature is dissipated quickly to extend the life of the friction layers.
• the support element and / or the pivot lever can be rigid components.
• the complexity of the vibration damping device can thereby be further reduced.
• manufacturing technology simple components can be used. They can also be made of a rigid material, but which has sufficient elasticity to withstand the friction caused by the rotation.
• the length of the support member may be equal to or greater than a length of the pivot lever.
• the tub may have projections having a distance from the axis of rotation of the drum connection with the support member allow it to be shorter. Thus, a torque acting on the first rotary joint by the pivoting lever can be reduced.
• the support element or a force action line of the support element can be spaced by an effective lever arm length from the first pivot joint.
• the effective lever arm length is perpendicular to the force of action line and may vary due to the operational vibrations in the tub.
• At least two support elements arranged on both sides of the container can support the tub.
• the support elements can be implemented a reliable damping of the vibrations of the tub.
• Figure 1 is a perspective view of a washing machine with an open door.
• FIG. 2 shows a sectional view of the washing machine in the sectional plane A-A from FIG. 1 with a vibration damping device according to the invention
• FIG. 3 shows a sectional view of a support element and a pivot lever of the vibration damping device from FIG. 2;
• FIG. 4 shows a basic illustration of a support element and a pivoting lever of the vibration damping device from FIG. 2;
• Fig. 5 is a perspective view of a support member and a pivot lever of the vibration damping device of Fig. 2; and
• 6 is a perspective view of a support member and a pivot lever of the vibration damping device of FIG .. 2
• FIG. 1 shows a washing machine 1 with a housing 3.
• a door 7 for closing a feed opening 9 is provided on a front housing wall 5 of the housing 3.
• the appliance door 7 is shown in an open position, so that through the feed opening 9 of the housing wall 5 through a laundry drum 1 1 is visible for moving laundry not shown here.
• FIG. 2 shows a tub 13 of the washing machine 1 from FIG. 1 along the sectional plane A-A.
• the washing drum 1 1 in the tub 13 is rotatably mounted about a rotation axis 15 and driven by a drive motor 25.
• the power transmission takes place by means of a belt 27, which is connected to a with the rear wall of the laundry drum 1 1 rotatably connected to the output disk 29 in engagement.
• the tub 13 is suspended by two springs 17 on a ceiling wall 19 of the housing 3.
• In the lower region of the tub 13 is connected via two rod-shaped support members 31 with the interposition of pivot levers 33 with the housing side walls 35.
• the support members 31 are arranged symmetrically with respect to a vertical center plane of the tub 13. More than one support element can be arranged on one of the sides.
• the springs 17, the support members 31 and the pivot lever 33 form a vibration damping device of the washing machine 1.
• With the vibration damping device 1 1 conditional vibrations of the tub 13 are absorbed and damped by the operation of the laundry drum.
• the pivoting lever 33 is articulated to the housing sidewalls 35 via a first pivot 37 about a first housing-fixed pivot axis 39.
• the pivot lever 33 is articulated to the support element 31 via a second pivot 47 about a second pivot axis 49 movable relative to the housing 3.
• the support member 31 is in turn its opposite the pivot 47 side hinged on a container-fixed third pivot 51 on the tub 13.
• the length a of the support member 31 may be smaller, equal to or greater than the length b of the pivot lever 33.
• FIG. 3 shows one of the support elements 31 of FIG. 2 together with the pivot lever 33 in a sectional view.
• the first rotary joint 37 has on the pivot lever 33 on one of the housing side wall 35 associated carrier 45 fixed bearing pin 43 which is fixedly connected to a formed as a sheet metal blank of the carrier 45 bearing bush 41.
• the articulation of the pivoting lever 33 on the side wall 35 of the housing is designed as a crankshaft.
• the operational vibrations or vibrations of the tub 13 are introduced into the support member 31 and transmitted through this along a force line of action f on the pivot lever 33.
• the vibrations are converted into rotational movements.
• the force of action line f of the support member 31 is spaced from the first pivot 37 by an effective lever arm length I.
• the effective Hebelarmin I is aligned perpendicular to the line of action f.
• the length a of the support element 31 is greater by a multiple than the length b of the pivot lever 33, whereby a torque acting on the pivot 37 is reduced.
• the effective lever arm length I varies between the support member 31 and the pivot 37. Due to the increased frictional resistance in the pivot 37, a translational energy of the tub 13 is at least partially converted into frictional energy. To this Way, the vibrations and noise occurring during operation of the laundry drum 1 1 are further reduced.
• FIG. 5 shows the right-hand support element 31 from FIG. 4 together with the pivoting lever 33 in a perspective view.
• the bearing bush 41 of the rotary joint 37 via a support 45 and the housing side wall 35 is attached.
• the pivot lever 33 is fixed to a continuous, tubular, fixed, the lever 33 against rotation bearing pin 43 which is rotatably mounted in the bearing bush 41, where the aforementioned friction layers are arranged and the temperature is dissipated.
• Fig. 6 shows the right support member 31 of FIG. 5 together with the pivot lever 33 in a perspective view.
• the bearing bush 41 of the rotary joint 37 via a longitudinal crossbar-shaped support 45 which is fixed to both sides, attached to the housing side wall 35. From the crossbar 45 wings are folded and folded, which form the bearing bush 41, in which the pivot lever 33 is connected by a in this case the bearing bush 41 against rotationally fixed through bearing pin 43, and the aforementioned friction layers are arranged in the lever.

Landscapes

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

Priority Applications (4)

Applications Claiming Priority (4)

Publications (1)

Family

ID=43896846

Family Applications (1)

Country Status (5)

Cited By (13)

Families Citing this family (1)

Citations (6)

• 2010
  • 2010-12-09 WO PCT/EP2010/069228 patent/WO2011070092A1/de active Application Filing
  • 2010-12-09 EA EA201290462A patent/EA023587B1/ru not_active IP Right Cessation
  • 2010-12-09 CN CN201080055493.9A patent/CN102652193B/zh active Active
  • 2010-12-09 EP EP10787481.0A patent/EP2510143B1/de active Active
  • 2010-12-09 PL PL10787481T patent/PL2510143T3/pl unknown

Patent Citations (6)

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