EP2093319A2 - Support assembly for a domestic appliance - Google Patents

Abstract

The domestic appliance support arrangement has a damper (12), which is located in a housing (2), for a component. A bracket and the damper are firmly connected with bracket projects in an interior of the housing through an opening in a housing bottom (10). The housing bottom lies loosely on a base part. Two brackets are connected with the base part.

Description

The invention relates to a support arrangement for a damper of a household appliance and a washing and / or drying machine with such a support arrangement.

In household appliances, especially in washing and / or drying machines, dampers are arranged to hold the tub laundry drum group and to some extent dampen the movements and vibrations generated by the movement of the laundry drum. The upper end of the damper is usually fixed to the tub laundry drum group. The lower end of the damper is conventionally mounted directly on a support or cross member of the housing. The connection part for the damper is in this case usually formed integrally with the cross member or screwed or welded. The legs of the washing and / or drying machine are also usually attached to the cross member and the housing bottom.

In the EP 0 933 463 A1 a vibration damping system is disclosed, which is arranged at a bearing connection of two housing parts of a washing machine. In this case, a cylindrical hollow upstanding pin, which is arranged on a projection of a lower housing part, engages in a hole which is arranged on a projection of an upper housing part. To dampen vibrations from one housing part to the other, a rubber ring is arranged between the two projections around the upstanding pin and is surrounded by a metal ring fixed to the housing.

The EP 1 496 147 A1 discloses a fastening device for fixing a damper of a washing machine, which allows the attachment of the tub drum group of a washing machine to the housing of this machine in a simple form. The disclosed unitary carrier has two segments, with the first segment secured to the housing of the washing machine and hingedly coupled to the second segment with intermediate positioning of a flexible member of one of the heads of the damper.

The revelation of EP 1 382 733 B1 relates to a washing machine with a support frame, which accommodates the oscillating group, in which a laundry drum is arranged, in the form of a vibrating unit supported by a spring-damper system. The washing machine has a housing, which surrounds the oscillating group, and a measuring system for detecting the weight of the drum load in the form of at least one force transducer. The support frame is formed with the oscillating group as a unit decoupled from the housing. The housing is equipped with a separate housing frame, wherein the support frame is arranged in the operating state of the washing machine on the housing frame with the interposition of at least one force transducer. Due to the decoupling, no forces applied to the housing act on the oscillating group and thus on the load cells. However, vice versa forces, and thus vibrations, the vibrating group transferred to the housing.

The object of the invention is to provide a support assembly for a damper of a household appliance, in particular for a washing and / or drying machine, which decouples the damper support dynamically from the housing so that the transmission of vibrations to the housing is minimized. In addition, a washing and / or drying machine is to be provided which dynamically decouples the damper assembly from the housing.

The object of the invention is achieved by a support arrangement and a washing and / or drying machine according to the appended independent claims.

In particular, the object is achieved by a household appliance Auflageranordnung with a damper located within a housing for a non-contact with the housing component, wherein the support assembly further comprises a base and at least one leg connected to the base, wherein the leg and / or fixed to the leg connectable damper protrudes through an opening in a housing bottom into the interior of the housing, wherein the housing bottom rests loosely on the base.

The vibrations that are caused in the non-contact component and reduced by the damper derived are not passed with the support arrangement according to the invention or only to a very small extent to the housing.

The invention is based on the idea that vibrations that are passed on during the washing process and in particular during the spinning process in the oscillating group, which has the laundry drum, and to a lesser extent on the damper holding the oscillating group, not or only in the very be passed to the housing slightly. For this purpose, the damper is mounted such that it is not firmly coupled to the housing or housing bottom on which the legs of the machine are provided. Rather, a separate storage for the damper assembly is provided, which is at most by contact with the housing bottom in contact. In particular, the trend of new washing and / or drying machines with increasing speed in the spinning process and concomitantly with increased vibration, a decoupling of damper support and housing is of great advantage, as it has the support arrangement according to the invention.

Advantageous embodiments of the support arrangement according to the invention are the subject of the dependent claims.

In a preferred embodiment of the support arrangement, two limbs connected to the base protrude through an opening in each case of the housing base into the interior space. Between the legs advantageously a conventional trained damper end (damper strut) can be recorded and secured. Thus, conventional dampers can be used together with the support assembly. Alternatively, it is possible to dispense with a second leg with a corresponding design of the damper end.

Preferably, the legs are made of stainless steel, so that in the relatively humid climate of a washing and / or drying machine can not develop rust on the supporting components.

In a preferred embodiment, the base part of the support assembly is made of elastic, especially rubbery material. Alternatively, the base can also be made of plastic-like material to take advantage of the beneficial cushioning effect of the materials and minimize the transmission of vibration to the case back and thus the legs of the machine.

Preferably, the base may also include a core of metallic material on which preferably the legs are arranged. Thus, the stability of the base or the actual support of the damper is improved. In addition, a relative movement between the base and the housing bottom is reduced due to the higher weight of the base.

Preferably, an anti-rotation element for engaging in the housing bottom is arranged on the base, so that slipping and twisting of the housing relative to the assembly supported by the damper is prevented.

Advantageously, the anti-rotation element, for example a plurality of bolts, on the housing bottom side facing the base, i. So opposite the case back, arranged. These bolts engage in arranged in the housing bottom holes with little play.

In a preferred embodiment, two cuts are placed in the base. The incisions extend continuously over the entire depth and, starting from the side adjacent to the housing bottom, between one third and two thirds of the total height. The legs with the connected or to be connected damper are preferably arranged in this embodiment on the base between the two incisions. By means of this arrangement, it is advantageously achieved that the base portion region lying between the cuts can move and deform independently of the remaining regions as a result of the forces or vibrations acting on the damper. Furthermore, since the anti-rotation elements are not arranged in this area, the aforementioned forces and vibrations are only minimally transmitted via the anti-rotation elements to the housing bottom.

In a further embodiment, the base part is formed by at least two sections. The portions include a middle portion where the damper joins the base and at least one outer portion formed in contact with the outside of the case bottom. The base has the shape of a disc with the middle section in its interior. The at least two sections are separated by an incision in the depth of the base starting from the side adjacent to the outside of the housing bottom. The surface of the middle section, where the thighs are located, begins where the cuts end, though not mandatory must be the case, and lies below the outside of the housing bottom with this contactless. Therefore, the housing bottom is supported on the outer sections. The anti-rotation element is arranged on the outer portion.

• Fig. 1 eine schematische Darstellung einer Waschmaschine mit einem Gehäuse und einer in dessen Innenraum angeordneten durch Federn und Dämpfer gehaltenen schwingenden Gruppe.
• Fig. 2 eine seitliche Ansicht einer bevorzugten Ausführungsform der erfindungsgemäßen Auflageranordnung;
• Fig. 3 eine perspektivische schematische Ansicht eines Auflagers für einen Dämpfer;
• Fig. 4 eine Darstellung einer schematischen Anordnung der Auflageranordnung und Beine am Gehäuseboden einer Wasch- und/oder Trockenmaschine; und
  • Fig. 1 zeigt eine Wasch- und/oder Trockenmaschine 1 mit einem Gehäuse 2 der Maschine mit einem Gehäuseboden 10. Die schwingende Gruppe 3 mit Laugenbehälter 4 und Waschtrommel 5 wird am oberen Teil durch beispielsweise zwei Federn 6 und an ihrem unteren Teil durch zwei Dämpfer 12 gehalten, welche symmetrisch angeordnet sind. Ein Ende des Dämpfers 12 ist mit der schwingenden Gruppe 3 verbunden und das nicht mit der schwingenden Gruppe 3 verbundene Ende des Dämpfers 12, auch Dämpferbein 12 genannt, ist an einem Auflager 14 fest angebunden.
  • Fig. 2 zeigt die Auflageranordnung eines Dämpfers einer Wasch- und/oder Trockenmaschine. Das Auflager 14, wie Fig. 3 zeigt, weist ein Grundteil 16 und zwei integral miteinander verbundene Schenkel 18 auf. Die Schenkel 18 sind fest auf dem Grundteil 16 angeordnet. Das Grundteil 16 ist aus gummiartigem oder kunststoffartigem Material hergestellt. Zur Verstärkung und Anbringung der Schenkel 18 kann das Grundteil 16 alternativ teilweise mit einem metallischen Material hergestellt sein. Das Grundteil 16 wird durch zwei Einschnitte 20 in drei Abschnitte 22, 24, 26 unterteilt. Die Einschnitte 20 sind über die Tiefe des Grundteils 16 durchgängig und weisen eine Höhe, gesehen von der dem Gehäuseboden 10 zugewandeten oberen Seite aus, von ca. 1/3 bis 2/3 der gesamten Höhe des Grundteils 16 auf.

The invention will be further described by way of example with reference to the accompanying drawings. Show

• Fig. 1 a schematic representation of a washing machine with a housing and arranged in its interior by springs and dampers held oscillating group.
• Fig. 2 a side view of a preferred embodiment of the support arrangement according to the invention;
• Fig. 3 a perspective schematic view of a support for a damper;
• Fig. 4 a representation of a schematic arrangement of the support assembly and legs on the housing bottom of a washing and / or drying machine; and
  • Fig. 1 shows a washing and / or drying machine 1 with a housing 2 of the machine with a housing bottom 10. The oscillating group 3 with tub 4 and washing drum 5 is held at the top by, for example, two springs 6 and at its lower part by two dampers 12, which are arranged symmetrically. One end of the damper 12 is connected to the oscillating group 3, and the end of the damper 12 not connected to the vibrating group 3, also called damper leg 12, is fixedly connected to a support 14.
  • Fig. 2 shows the support arrangement of a damper of a washing and / or drying machine. The support 14, like Fig. 3 shows, has a base 16 and two legs 18 integrally connected to each other. The legs 18 are fixedly arranged on the base part 16. The base 16 is made of rubbery or plastic-like material. For reinforcement and attachment of the legs 18, the base 16 may alternatively be made partially with a metallic material. The base 16 is divided by two incisions 20 into three sections 22, 24, 26. The incisions 20 are continuous over the depth of the base part 16 and have a height, seen from the housing bottom 10 facing upper side, from about 1/3 to 2/3 of the total height of the base 16.

At the central portion 22 of the formed by the incisions 20 three regions 22, 24, 26, the legs 18 are arranged. At the two outer portions 24, 26 are each two anti-rotation elements 29, for example, bolts 28, preferably made of stainless steel, respectively. Complementarily, the housing bottom 10 each have holes which are slightly larger in diameter than the bolts 28, so that the bolt 28 (not shown) can engage with some movement in the holes.

In the illustrated embodiment, the legs 18 protrude through openings or slots 30 in the housing base 10 into the interior of the housing of the washing and / or drying machine. Either a separate slot 30 may be provided for each leg 18, or alternatively a correspondingly sized slot 30 may be provided together for both legs 18. In this case, the housing bottom 10 is loose and thus decoupled on the base 16. In addition, the base 16 is held against rotation in its horizontal position by the bolt 28. The play of movement of the pin 28 of the rotation is set so that at the maximum possible rotation of the base 16, the legs 18 do not come into contact with the edges of the slots 30 and thus with the housing bottom 10.

As in the schematic representation in Fig. 4 As shown, the housing is supported by casings 32 mounted on the caseback.

After the legs 18 are inserted through the housing bottom 10, the damper leg 12 can be attached to the legs 18, for example by means of a locked pin 34 or by means of a screw each made of stainless steel.

In an alternative embodiment, the anti-rotation element 29 may be formed on the underside of the housing bottom 10. For this purpose, bolts that are either screwed, welded or integrally formed with the housing bottom, engage in complementary holes in the outer portions 24, 26 of the base 16. Alternatively, projections may also be formed on the underside of the housing bottom 10. For example, the projections may be welded complementarily to the corners of the base 16 on the housing bottom 10 and thereby the lateral movement of the housing bottom 10 relative to the support 14 in each of the four directions limit. The resulting motion play also allows no contact in each case between the leg 18 and the slot 30 in the housing bottom 10th

In one embodiment, instead of the two legs 18, only one leg may be formed. Accordingly, the housing bottom has only one slot 30 through which the single leg protrudes. The shock absorber leg must then be designed accordingly for a non-positive connection.

Furthermore, the connection arrangement of the leg (s) 18 with the damper 12 may also be provided below the housing bottom 10. For the necessary space requirement of the connection arrangement of the central portion 22 of the base 16 must be made lower than the two outer portions 24, 26 so that when resting the housing bottom 10 on the base 16, the connection assembly can be arranged without contact with the housing 2.

If the washing and / or drying machine of the preferred embodiment is operated, vibrations are conducted into the damper due to the movement of the laundry drum. In the damper, the vibrations are reduced, and the remaining vibrations are passed through the support assembly on the strut 12 via legs 18 in a base 16. The base 16 made of at least partially elastic material further dampens the vibrations and releases them into the ground. The fact that the assembly containing the laundry drum is arranged without contact in the housing, no vibrations are transmitted to the housing, i. The module is dynamically decoupled from the housing. In the area of the support arrangement, the housing bottom 10 loosely rests on the base part 16. The prevailing in the base vibration is therefore not or only slightly delivered to the housing bottom 10 and due to the cuts 20 in the base 16. The movement of the security against rotation is designed such that a contact between the damper 12 / leg 18 and the edge of the slot 30 in the housing bottom 10 is excluded. The fact that no or almost no vibrations act on the housing 2, a movement, so-called hiking, the washing machine, especially in the spin cycle, prevented and increased noise can be avoided.

In a further embodiment, the base part 16 is formed by at least two sections 22, 24, 26, a middle section 22, where the damper 12 is attached to the base 16 connects, and at least one outer portion 24, 26 formed in contact with the outside of the housing bottom 10. The base 16 has the shape of a disc with the central portion 22 in its interior. The at least two sections are separated by a recess 20 in the depth of the base part 16, starting from the voltage applied to the outside of the housing bottom 10 side. The surface of the central portion 22, where the legs 18 are located, begins where the sipes end, though not necessarily, and is located below the outside of the housing bottom 10 with this contactless. Therefore, the housing bottom 10 is supported on the outer portions 24, 26 from. The anti-rotation element 29 is arranged on the outer portion 24, 26.

LIST OF REFERENCE NUMBERS

1

Washing machine

2

casing

3

Swinging group

4

container

5

drum

6

feathers

10

caseback

12

damper

14

In stock

16

base

18

leg

20

incision

22

Middle section

24

Outer section

26

Outer section

28

bolt

29

anti-rotation

30

slots

32

legs

34

pen

Claims (15)

A household appliance support assembly having a damper (12) within a housing for a non-contact member to the housing (2), the support assembly further comprising: a base (16) and at least one leg (18) connected to the base (16), the leg (18) and / or the damper (12) connectable to the leg (18) passing through an aperture (30) in one Housing bottom (10) projects into the interior of the housing, wherein the housing bottom (10) loosely rests on the base part (16). Household appliance support arrangement according to claim 1, characterized in that two legs (18) connected to the base part (16) and projecting through a respective slot (30) of the housing bottom (10) into the interior of the housing (2) are arranged. Domestic appliance support assembly according to claim 1 or 2, characterized in that the legs (18) are made of stainless steel. Domestic appliance support arrangement according to one of claims 1 to 3, characterized in that the base part (16) made of elastic, in particular rubber-like material. Domestic appliance support arrangement according to one of claims 1 to 3, characterized in that the base part (16) is made of plastic-like material. Domestic appliance support arrangement according to one of claims 4 to 5, characterized in that the base part (16) has at least one metallic core. Domestic appliance support arrangement according to one of claims 1 to 6, characterized in that on the base part (16) at least one anti-rotation element (29) for engagement in the housing bottom (10) is arranged. Domestic appliance support arrangement according to claim 7, characterized in that the anti-rotation element (29) of the base part (16) relative to the housing bottom (10) is arranged. Domestic appliance support arrangement according to one of claims 1 to 8,
characterized in that the base part (16) is connected at least by two sections (22, 24, 26), a central section (22), where the damper (12) adjoins the base part (16), and at least one outer section (16). 24, 26) is formed in contact with the outside of the housing bottom (10); wherein the at least two sections (22, 24, 26) are separated by an incision (20) in the depth of the base part (16) starting from the on the outside of the housing bottom (10) adjacent side. Domestic appliance support arrangement according to claim 9, characterized in that the central portion (22) below the outside of the housing bottom (10) is non-contact with this. Domestic appliance support arrangement according to one of claims 9 to 10,
characterized in that the anti-rotation element (29) on the outer portion (24, 26) is arranged. Domestic appliance support arrangement according to one of claims 1 to 8,
characterized in that the base part (16) has at least two notches (20) which extend from the side adjacent to the outside of the housing bottom (10) in the depth, and that the legs (18), with which the damper ( 12) is connectable to the base part (16) between the two incisions (20) are arranged. Domestic appliance support arrangement according to one of claims 9 to 12,
characterized in that the base (16) has the shape of a disc with the central portion (22) in its interior. Domestic appliance support arrangement according to one of claims 9 to 13,
characterized in that the cuts (20) extend between one third to two thirds of the total depth of the base (16). Washing and / or drying machine with at least two household appliance support arrangements according to one of the preceding claims for holding the damper (12).

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