DE102021205432A1 - Household appliance for the care of laundry items with a specific storage system for a shaft on a tub - Google Patents

Abstract

One aspect of the invention relates to a domestic appliance (1) for the care of items of laundry, having a housing (2) and having a tub (4) which is arranged in the housing (2), the tub (4) having a rear wall (15) in which a central opening (23) is arranged, and with a bearing system (12) with which a shaft (6) of the household appliance (1) is mounted, the bearing system (12) being arranged in the opening (23). , characterized in that the storage system (12) with a non-destructive detachable connection (22) is attached to the rear wall (15).

Description

One aspect of the invention relates to a household appliance for the care of items of laundry. The household appliance has a housing. The household appliance also has a tub that is arranged in the housing. The tub has a rear wall in which a central opening is formed. The household appliance also has a bearing system in which a shaft of the household appliance is mounted. The storage system is arranged in the opening.

Such an embodiment of a household appliance for the care of laundry is for example from GB 2 157 326 A known. It is provided that an insert is cast in a rear wall. The separate insert is therefore permanently connected to the rear panel. The handling of the bearing is disadvantageous as a result.

It is the object of the present invention to create a household appliance for the care of laundry items, in which the arrangement of a storage system on a rear wall of a tub is improved.

This object is achieved by a household appliance for the care of items of laundry according to claim 1.

One aspect of the invention relates to a household appliance for laundry items. The household appliance has a housing. The household appliance also has a tub that is arranged in the housing. The tub has a rear wall in which a central opening is formed. The household appliance also has a storage system or a storage module, in which a shaft of the household appliance is mounted. The storage system is arranged in the opening.

The storage system is attached to the rear wall with a non-destructively detachable connection. Such a configuration now also makes it possible to provide a modular structure in this respect between the rear wall of the tub and the storage system. This means that the storage system can be mounted and dismounted independently of the rear wall. In particular, a reversible removal and attachment of this storage system to the rear wall is thus also made possible. This allows for simpler assembly scenarios. In principle, therefore, it is also advantageous to simply disassemble such a bearing system, for example in order to service or replace a ball bearing of the bearing system.

In one embodiment, the storage system is arranged on the rear wall with a threaded connection, which is an embodiment of a detachable connection. This is a particularly simple detachable connection. On the one hand, such a threaded connection allows the bearing system to be assembled and disassembled easily. On the other hand, such a specific detachable connection is also mechanically stable and robust. This means that the storage system can also be held in a secure position on the rear wall. In particular, however, such a threaded connection also enables assembly and disassembly with very little effort. A multiple removal of individual components that define the detachable connection is then no longer necessary. A simple rotary movement, as specified by a threaded connection, then also enables a quick and easy, as well as ergonomic, assembly principle. In a threaded connection, in contrast to a screw connection, in which a screw separate from the bearing module is screwed into a screw channel, the bearing module itself, in particular as a whole, is rotated in order to reach the screwed-in position in the opening.

In one embodiment, the threaded connection has an external thread. This external thread is integrally formed on the outside of the casing wall of the bearing system. The threaded connection also has an internal thread. This internal thread is formed on a boundary wall that bounds the opening. This also supports the advantages mentioned above to a particular extent. In particular, this also enables the storage system to be fitted in the opening very easily and without jamming. It is precisely because of these locally specific positions of the external thread and the internal thread that they can also be positioned in a mechanically stable manner. The forces generated when screwing in can also be absorbed particularly advantageously as a result.

In one embodiment, the external thread is designed to be interrupted in the direction of rotation around the axis of rotation. In particular, a plurality of externally threaded sections which are spaced apart from one another are formed in this circumferential direction. The external thread can thus be designed to be minimized. This reduces the complexity of the external thread. Nevertheless, a stable attachment between the external thread and the internal thread is fully maintained. This configuration further improves the clamping-free and spreading-free attachment. In addition to or instead of this, one exemplary embodiment can provide for the internal thread to be designed to be interrupted in the circumferential direction. esp special can be formed in this direction of rotation more internal thread sections. In this regard, the corresponding advantages apply, as they are also specified for the exemplary embodiment with a plurality of externally threaded sections. Such a segmentation of the internal thread and/or the external thread, formed in the direction of rotation, also enables simple production of the respective components mentioned. Segments or individual blocks are thus formed by the respective threaded sections.

Such an interrupted thread is also particularly advantageous in that the bearing module or the bearing system can be introduced axially and thus purely linearly in some areas into the opening in a first assembly step. The internal thread sections and the external thread sections can then already be arranged overlapping axially. Once this intermediate assembly position has been reached, a rotary movement about the thread axis can then be used to couple one or more internally threaded sections to externally threaded sections. As a result, a bayonet-like detachable connection is formed.

In one embodiment, the bearing system is screwed into the opening with the threaded connection. An axial position of the bearing system in the opening and thus relative to the rear wall can also be set very precisely in this way. In particular, a continuous axial position adjustment is also made possible here. In one embodiment, the household appliance has an axial and/or azimuthal position fixing device. An axial position of the bearing system and/or an azimuthal position of the bearing system can be fixed in the opening with this axial and/or azimuthal position fixing device. This means that the axial position and/or azimuthal position generated during coupling is also fixed in position. An unwanted adjustment of the position of this separate storage system can thus be avoided. In one exemplary embodiment, the axial position and/or azimuthal position set in this regard during assembly is then also retained permanently. In particular, it is provided that the axial and/or azimuthal position fixing device has a reverse rotation lock. This means that with such a configuration of a threaded connection, the bearing system can no longer be rotated independently in its end position, or at most by a predetermined tolerance value counterclockwise. An undesired adjustment of the set position of the storage system can thus be avoided.

It can be provided that an axial position and/or an azimuthal position is additionally held, in particular fixed, by a screw connection that is separate from the threaded connection. This can be done, for example, by screwing a screw into a screw channel.

In one embodiment, the axial and/or azimuthal position fixation device has radial projections. These are spaced apart from one another on the bearing system in the direction of rotation and thus in the direction of rotation of the threaded connection, in particular equidistant from one another. In one embodiment, the axial and/or azimuthal position fixation device includes a plurality of positioning ribs. These are arranged spaced apart from one another on the rear wall in the stated direction of rotation, in particular equidistant from one another. When screwing the bearing system or the bearing module into the opening, the coupling steps are formed discretely by coupling a radial projection with a positioning rib, by means of which the axial and/or azimuthal position fixations of the bearing system are set. In particular, such discrete coupling stages are thus provided in one exemplary embodiment. In this way, security against torsion can be achieved at least within the framework of a plurality of coupling stages that follow one another in the direction of rotation. In particular, such an independent rotation about an azimuthal angle that is formed between two adjacent coupling stages in this direction of rotation is thus at most possible. It is also possible that such an azimuthal position of the bearing system is set in such a way that such a coupling stage is just reached and maintained. This prevents in particular a reverse rotation counter to the screwing-in direction. A reverse rotation lock is then formed by this coupling stage. In addition, this axial position and/or the azimuthal position can be secured by a screw connection.

In one exemplary embodiment, a full rotation and thus a rotation of 360° results in an axial change in the position of the bearing system of between 4 mm and 6 mm, in particular by 5 mm. This enables a very finely adjusted position adjustment of the storage system or a correspondingly very finely adjusted position adjustment of the storage system relative to the rear wall.

In one embodiment, more than three discrete coupling stages, in particular more than five discrete coupling stages, of the axial and/or azimuthal position fixing device are provided. In particular, eight discrete coupling stages can be provided in one embodiment. In one exemplary embodiment, an axial change in position of the bearing system relative to the rear wall of between 0.6 mm and 0.7 mm, in particular between 0.62 mm and 0.63 mm, is set for each coupling stage. In this respect, bearing detent can be made possible with these eight discrete coupling stages, so to speak, in the direction of rotation. An axial change in position between the above-mentioned advantageous values can thus be set between two successive coupling stages in the direction of rotation. This also enables a corresponding, very finely adjusted change in position. In particular, this can then also be fixed very precisely. In particular, a bayonet-like detachable connection is also realized as a result.

In one embodiment, the set axial and/or azimuthal position can be released. In particular, if a corresponding dismantling of the storage system is desired, this set position can also be released again. For example, in this context, a positioning rib and/or a radial projection can be designed to be correspondingly elastically resilient. In this way, the coupled state between a radial projection and a positioning rib can also be decoupled again.

In one exemplary embodiment, the storage system or the storage module has a storage housing. In the exemplary embodiment, this bearing housing is in particular made of metal. In one exemplary embodiment, the storage system also has a storage block. In one exemplary embodiment, this bearing block is made in particular of plastic. The bearing block is arranged on the outside of the bearing housing in the radial direction. In particular, the bearing block surrounds the bearing housing on the peripheral side. In particular, it completely surrounds the bearing housing on the peripheral side. The bearing block thus forms an outer shell for the bearing housing. This embodiment is also particularly advantageous. This is because on the one hand a respective material individuality of these two components of the storage system can be achieved. In addition, it is precisely the bearing block that makes it possible to provide a component of the detachable connection in a particularly advantageous manner. In particular, a particularly simple integration and thus one-piece design of this connecting element of the detachable connection in this bearing block is made possible in this regard. In this context, an external thread of a threaded connection can be integrated particularly advantageously on this bearing block. In particular, if this is made of plastic, this external thread can be manufactured very precisely and quickly. For example, this can be done by an injection molding process. It can therefore also be avoided that such a form-precise configuration of an external thread has to be produced on the bearing housing made of metal. In particular, the bearing housing made of metal can thus also be manufactured more easily and quickly. In addition, it is possible that the plastic bearing block can also be installed more easily and with less noise, in particular screwing into the internal thread of the opening. Last but not least, a weight reduction of the bearing system is also made possible by such a design of the bearing block.

In one embodiment, the bearing block cannot be detached from the bearing housing without being destroyed. This means that an inseparable connection is realized here, which cannot be reversibly separated and formed again. For example, the bearing block can be molded onto the bearing housing. It can be done by a corresponding injection molding process.

In such an exemplary embodiment, the bearing system can then be provided as a quasi two-component system.

It is particularly advantageous if the plastic from which the bearing block is formed has a glass fiber reinforced polypropylene. In particular, a bearing block is made entirely of glass fiber reinforced polypropylene. This is a plastic that is particularly suitable for the requirements provided here, in particular with regard to mechanical stability and resilience during assembly as such and also during the effects of force occurring during operation of the household appliance, for example vibrations and the like. In addition, this plastic also has a high fracture resistance. It is also particularly resistant to deformation. In one embodiment, the metal from which the bearing housing is preferably formed is aluminum. A design made of cast iron is also possible. Here, too, a high stability of the bearing housing is made possible.

In one embodiment, the bearing housing and the bearing block are each designed as a hollow cylinder. In this regard, the hollow-cylindrical bearing housing is then accommodated on the inside in the hollow-cylindrical bearing block. A storage system or a storage module is thus provided, as it were, by means of which a shaft, for which the storage system is intended to be supported, can be accommodated particularly securely.

In one embodiment, the tub is designed in several parts. In one exemplary embodiment, it has a front container segment in the axial direction of the tub and a rear container segment separate therefrom in the axial direction. In one embodiment, that is rear container segment made of plastic. In particular, the rear wall is integrated into this rear container segment. In one exemplary embodiment, the rear container segment thus has a hollow cylinder area and an area adjoining the hollow cylinder area on the back, which area is the rear wall. The one-piece design made of plastic in this respect enables a reduction in the number of components and a reduction in weight. In addition, such a design also makes it possible to provide an internal thread on the plastic opening. A threaded connection can then also be provided in which both the external thread and the internal thread are made of plastic.

In this regard, it can be provided in one exemplary embodiment that the two plastics are different. For example, the plastic from which the rear container segment is made, in particular with the rear wall and the internal thread, can comprise, in particular be, a talc-reinforced polypropylene.

Household appliances for the care of items of laundry, such as a washing machine or a washer-dryer, have a laundry drum. This usually has a hollow-cylindrical casing wall.

In addition, a laundry drum usually also has a rear base plate. As a result, the jacket wall is closed to the rear in the hollow cylindrical shape. The front of the laundry drum usually has a so-called end base. The end face and the bottom disk are usually separate parts from the casing wall, which are connected to the casing wall. It is known in this context that folded joints are produced between the components mentioned.

Another independent aspect of the invention relates to a household appliance for the care of laundry items, with a housing and with a tub that is arranged in the housing, the tub having a rear wall in which a central opening is arranged, and with a storage system, with which a shaft of the household appliance is mounted, is arranged in the opening, characterized in that the bearing system has a bearing housing made of metal and a bearing block made of plastic, which is arranged on the outside of the bearing housing and the bearing housing surrounds the periphery.

Exemplary embodiments of the first independent aspect relating to the household appliance are to be regarded as advantageous exemplary embodiments of the further independent aspect.

A further independent aspect of the invention relates to a tub for a household appliance for the care of items of laundry. The tub has a rear wall with a central opening and also has a storage system or a storage module in which a shaft of the household appliance is mounted. The storage system is arranged in the breakthrough. The storage system is attached to the rear wall with a non-destructively detachable connection.

Advantageous exemplary embodiments with regard to the attachment of the storage system to the rear wall and/or the design of the rear wall and/or the opening and/or the storage system have already been mentioned above in relation to the household appliance and apply accordingly to the tub alone.

The information “top”, “bottom”, “front”, “back”, “horizontal”, “vertical”, “depth direction”, “width direction”, “height direction” are the positions specified for the intended use and intended positioning of the device and directions given.

Further features of the invention result from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and/or shown alone in the figures, can be used not only in the combination specified, but also in other combinations or on their own, without the frame to abandon the invention. The invention is therefore also to be considered to include and disclose embodiments that are not explicitly shown and explained in the figures, but that result from the explained embodiments and can be generated by separate combinations of features. Versions and combinations of features are also to be regarded as disclosed which therefore do not have all the features of an originally formulated independent claim.

• 1 eine schematische Vertikalschnittdarstellung durch ein Ausführungsbeispiel eines erfindungsgemäßen Haushaltsgeräts zur Pflege von Wäschestücken;
• 2 eine teilweise geschnittene Seitenansicht eines Ausführungsbeispiels eines erfindungsgemäßen Laugenbehälters, wie er in dem Haushaltsgeräts gemäß 1 verbaut sein kann;
• 3 eine vergrößerte Darstellung der oberen Hälfte des Laugenbehälters in 2;
• 4 ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Laugenbehälters mit einem spezifischen Lagersystem in einer Darstellung entsprechend gemäß 3;
• 5 eine vergrößerte Teildarstellung von Komponenten in 4, wobei hier das Lagersystem und eine Rückwand des Laugenbehälters in demontiertem Zustand gezeigt sind;
• 6 eine Ansicht auf die Rückwand eines Ausführungsbeispiels eines Laugenbehälters mit einem daran befestigten Lagersystem; und
• 7 eine vergrößerte Darstellung eines Teilausschnitts in 6.

Exemplary embodiments of the invention are explained in more detail below with the aid of schematic drawings. Show it:

• 1 a schematic vertical sectional view through an embodiment of a household appliance according to the invention for the care of laundry;
• 2 a partially sectioned side view of an embodiment of an invention appropriate tub, as in accordance with the household appliance 1 can be installed;
• 3 an enlarged view of the upper half of the tub in 2 ;
• 4 a further embodiment of a tub according to the invention with a specific storage system in a representation according to FIG 3 ;
• 5 an enlarged partial view of components in 4 , in which case the storage system and a rear wall of the tub are shown in the dismantled state;
• 6 a view of the rear wall of an embodiment of a tub with a storage system attached thereto; and
• 7 an enlarged representation of a partial section in 6 .

Elements that are the same or have the same function are provided with the same reference symbols in the figures.

In 1 a schematic embodiment of a household appliance for the care of laundry items is shown in a vertical sectional view. The household appliance 1 is a washing machine here. The household appliance 1 has a housing 2 . An oscillating system 3 of the household appliance 1 is arranged in this housing 2 . The household appliance 1 also has a tub 4 . In the exemplary embodiment, the oscillating system 3 has the tub 4 of the household appliance 1 . In addition, the household appliance 1 has a laundry drum 5 . The laundry drum 5 is a separate component from the tub 4 . The laundry drum 5 is accommodated in the tub 4 . In this context, the tub 4 can be referred to as the outer drum and the laundry drum 5 as the inner drum. The laundry drum 5 is rotatably mounted about an axis of rotation A in the exemplary embodiment. The axis of rotation A is oriented horizontally here and in the x-direction, which is the depth direction of the household appliance 1 . The laundry drum 5 is intended to accommodate the laundry items. The laundry drum 5 is connected to a shaft 6 of the household appliance 1 . In particular, a non-rotatable connection is formed here. The shaft 6 is also oriented horizontally and coaxially with the axis of rotation. To drive the shaft 6 , the household appliance 1 has a pulley 7 and a belt 8 , for example. These components are connected to a motor 9 of the household appliance 1 and can be driven as a result. The motor 9 can be an electric motor, for example.

In addition, the oscillating system 3 preferably has springs 10 . In addition, it preferably also has a shock absorber 11 . In addition, the household appliance 1 has a storage module or a storage system 12 . In this storage system 12, the shaft 6 is rotatably mounted. In one example, the storage system 12 is arranged in a storage receptacle 13 that is formed on the tub 4 . The bearing mount 13 can be an opening in a rear wall of the tub 4 .

The tub 4 has a longitudinal axis B in the embodiment. This is oriented here schematically and by way of example in the horizontal direction and thus in the x-direction. In particular, it is oriented coaxially to the longitudinal axis A in this schematic representation. The tub 4 has a hollow cylinder 14 . The tub 4 also has a rear wall 15 . Through the rear wall 15 of the tub 4 is closed to the rear. This rear wall 15 is separate from the hollow cylinder 14 . The laundry drum 5 also has a hollow cylinder 16 and a rear wall 17 . Viewed in the direction of the longitudinal axis B and thus in the axial direction, the hollow cylinder 14 has a rear edge area 18 . In one exemplary embodiment, the rear wall 15 has an outer edge region 19 viewed radially with respect to the longitudinal axis B. The rear edge area 18 and the radially outer edge area 19 are directly adjacent to one another.

In 2 an embodiment of a tub 4 is shown in a vertical sectional view. The tub 4 is made in several parts here. It has a front container segment 14a viewed axially. This is essentially designed as a hollow cylinder. In addition, viewed in the axial direction and thus in the direction of the longitudinal axis B, it has a rear container segment 14b. The rear container segment 14b is connected at an interface 20 to the front container segment 14a. In one exemplary embodiment, the rear container segment 14b can be formed from plastic. For example, it can have talc-reinforced polypropylene. In particular, the rear container segment 14b can be made entirely of talc-reinforced polypropylene.

Due to the configuration of the rear container segment 14b made of plastic, in particular made of talcum-reinforced polypropylene, a simpler and more cost-effective plastic can be used in comparison to the storage system 12, in particular the storage block 25. In particular, the production time is also reduced in this regard.

The rear container segment 14b has a hollow cylinder part 21 . On an axially rear The rear wall 15 is formed at the end of this hollow cylinder part 21 . In one exemplary embodiment, it is formed in one piece with the hollow cylinder part 21 . The rear wall 15 has a central or middle opening 22 . The storage system 12 is arranged in the opening 22 . The storage system 12 is a device separate from the rear wall 15 . The storage system 12 is intended for storing the shaft 6 already explained. Wave 6 is in 2 Not shown.

The storage system 12 is arranged with a non-destructively releasable connection 23 on the rear wall 15, in particular in the opening 22, in particular fastened therein.

In 3 is an enlarged view of the upper portion of the embodiment of the tub 4 according to FIG 2 shown. In this exemplary embodiment it is provided that the detachable connection 23 has a plurality of bolts 24 . In 3 only one of these bolts 24 is shown in this regard. This bolt 24 can also be a screw, for example. In this context, a screw boss is formed in the area of the opening 22 in the rear wall 15 . In this way, the storage system 12 , which is separate for this purpose, can be screwed to the rear wall 15 in the opening 22 in one exemplary embodiment.

As already in 2 As can be seen, the bearing system 12 has a bearing block 25 in the exemplary embodiment. Furthermore, the bearing system 12 has a bearing housing 26 . In the exemplary embodiment, the bearing housing 26 is in the form of a hollow cylinder. In particular, the bearing block 25 is in the form of a hollow cylinder in one exemplary embodiment. The bearing block 25 surrounds the bearing housing 26 on the peripheral side. The bearing block 25 is arranged directly on the outside of the bearing housing 26 . In one embodiment, bearing housing 26 is formed of metal. In particular, it is made of aluminum or cast iron. In one embodiment, the bearing block 25 is made of plastic. In particular, the plastic is glass fiber reinforced polypropylene.

In 4 is in a corresponding sectional view as in 3 another embodiment of a tub 4 is shown. In this embodiment, in contrast to 3 the non-destructively releasable connection 23 is designed as a threaded connection 27 . In this context, a boundary wall 28 of the rear wall 15, which bounds the opening 22, has an internal thread 29. The bearing block 25 has an external thread 31 on a peripheral wall or a jacket wall 30 . The bearing system 12 can thus be fastened to the opening 22 by the threaded connection.

In 5 is an enlarged view of a portion in 4 shown. The bearing system 12 is also removed from the opening 22 in this case. Both the internal thread 29 and the external thread 30 can be recognized here. As implemented in this exemplary embodiment, the internal thread 29 can be segmented in the direction of rotation around the longitudinal axis B and thus in the direction in which this internal thread 29 is screwed in. This means that it has individual, spaced internal thread sections 29a in this direction of rotation. For the sake of clarity, only some of these internally threaded sections 29a are provided with the corresponding reference numbers. In addition or instead of this, it can also be provided that the external thread 30 is segmented in this regard in the circumferential direction about the longitudinal axis B. Here, too, several spaced external thread segments 30a can be formed, of which 5 for the sake of clarity, only some are provided with the corresponding reference numbers. As can be seen here, a relevant casing wall outside 25a of the bearing block 25 is formed integrally in the external thread 30 and is therefore formed in one piece with it. Likewise, the internal thread 29 is integral and thus formed in one piece with the boundary wall 28 .

In 6 FIG. 14 is a rear view of the embodiment of FIG 5 shown, in which case the bearing system 12 is screwed into the opening 22 by means of this threaded connection. In this exemplary embodiment it can also be seen that the tub 4 has an axial and/or azimuthal position fixing device 31 . With this, the bearing system 12 can be fixed in the axial direction and/or in the azimuthal direction about the longitudinal axis B as intended. An axial position and/or an azimuthal position can thus be fixed.

In one exemplary embodiment, this axial and/or azimuthal position fixing device 31 has radial projections 32, as can be seen in the enlarged representation of a partial detail 6 in the representation in 7 can be seen. These radial projections 32 are integral with the bearing system 12, in particular the bearing block 25, is formed. They project radially outwards. In the exemplary embodiment, a plurality of discrete radial projections 32 of this type are formed around the longitudinal axis B in the circumferential direction. These are more than three here, in particular more than five, preferably eight. For the sake of clarity, only some of these radial projections 32 are provided with the corresponding reference numbers. In one exemplary embodiment, these radial projections 32 are equidistant from one another in the direction of rotation around the longitudinal axis B arranged. Furthermore, this axial and/or azimuthal position fixing device 31 has positioning ribs 33 . In one exemplary embodiment, these are formed in one piece with the rear wall 15 . Also for the sake of clarity, the enlarged representation in 7 only some of these positioning ribs 33 are provided with the corresponding reference numbers.

The positioning ribs 33 are provided for coupling with the radial projections 32 . The axial position and/or the azimuthal position of the bearing system 12 can thus be fixed. This is not the only reason why a bayonet-like detachable connection is created in one embodiment. In one exemplary embodiment, it is provided that a full revolution about the longitudinal axis A achieves an axial change in the position of the bearing system 12 relative to the opening 22 of between 4 mm and 6 mm, in particular by 5 mm. Provision can be made for the eight discrete coupling stages, each of which is formed by the eight radial projections 32 and the positioning ribs 33, to cause an axial change in the position of the bearing system 12 between 0.6 mm and 0.7 mm, in particular between 0.6 mm and 0.63 mm. This means that during a rotation about the longitudinal axis B between two radial projections 32 that are adjacent in the azimuthal direction, a relevant change in the axial position can be set. In the snapped state between a radial projection 32 and a positioning element 33, a discrete coupling stage is formed in this respect.

Reference List

1

household appliance

2

Housing

3

oscillating system

4

tub

5

laundry drum

6

Wave

7

pulley

8th

belt

9

engine

10

Feather

11

shock absorber

12

storage system

13

stock pick-up

14a

front container segment

14b

rear container segment

15

back panel

16

hollow cylinder

17

back panel

18

edge area

19

edge area

20

interface

21

hollow cylinder part

22

connection

23

breakthrough

24

bolt

25

storage block

25a

jacket wall outside

26

bearing housing

27

threaded connection

28

boundary wall

29

inner thread

29a

female thread section

30

external thread

31

Axial and/or azimuthal position fixation device

32

radial protrusions

33

positioning ribs

A

longitudinal axis

B

longitudinal axis

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• GB 2157326A [0002]

Claims (15)

Household appliance (1) for the care of laundry items, with a housing (2) and with a tub (4) which is arranged in the housing (2), the tub (4) having a rear wall (15) in which a central breakthrough (22) is arranged, and with a bearing system (12) with which a shaft (6) of the household appliance (1) is mounted, the bearing system (12) being arranged in the breakthrough (22), characterized in that the Storage system (12) is attached to the rear wall (15) with a non-destructively detachable connection (23). Household appliance (1) after claim 1 , characterized in that the storage system (12) is arranged with a threaded connection (27) as a detachable connection (23) on the rear wall (15). Household appliance (1) after claim 2 , characterized in that the threaded connection (27) has an external thread (30) which is integrally formed on a jacket wall outside (25a) of the bearing system (12) and an internal thread (29) which is on a boundary wall (28) which the breakthrough (22) limited, is formed. Household appliance (1) after claim 3 , characterized in that the external thread (30) is designed to be interrupted in the direction of rotation around the longitudinal axis (B) of the tub (4), in particular has a plurality of external thread sections (30a) in the direction of rotation, and/or the internal thread (29) in the direction of rotation around the longitudinal axis (B) of the tub (4) is designed to be interrupted, in particular having a plurality of internally threaded sections (29a) in the direction of rotation. Household appliance (1) according to one of the preceding claims 2 until 4 , characterized in that the bearing system (12) is screwed into the opening (22) with the threaded connection (27). Household appliance (1) according to one of the preceding claims, characterized in that the household appliance (1) has an axial and/or azimuthal position fixing device (31) with which an axial position and/or an azimuthal position of the bearing system (12) in the opening (22 ) is fixed. Household appliance (1) after claim 6 , characterized in that the axial and/or azimuthal position fixing device (31) has radial projections (32) which are arranged on the bearing system (12) at a distance from one another in the direction of rotation, in particular equidistant from one another, and the axial and/or azimuthal position fixing device (31 ) has positioning ribs (33) which are spaced apart from one another in the direction of rotation, in particular equidistant from one another, on the rear wall (15), wherein when the bearing system (12) is screwed into the opening (22), the coupling of at least one radial projection (32 ) are formed with a positioning rib (33) discrete coupling stages, are set by the axial and / or azimuthal position fixations. Household appliance (1) after claim 7 , characterized in that by a full rotation about the longitudinal axis (B) an axial change in position of the bearing system (12) between 4mm and 6mm, in particular by 5mm, is achieved. Household appliance (1) after claim 7 or 8th , characterized in that eight discrete coupling stages are formed, in particular an axial position change between 0.6 mm and 0.7 mm, in particular between 0.62 mm and 0.63 mm, is set for each coupling stage. Household appliance (1) according to one of the preceding claims, characterized in that the bearing system (12) has a bearing housing (26) made of metal and a bearing block (25) made of plastic, which is arranged on the outside of the bearing housing (26) and the bearing housing ( 26) surrounds the circumference. Household appliance (1) after claim 10 , characterized in that the plastic has glass fiber reinforced polypropylene. Household appliance (1) after claim 10 or 11 , characterized in that the metal is aluminum or cast iron. Household appliance (1) according to one of the preceding Claims 10 until 12 , characterized in that the bearing housing (26) and the bearing block (25) are each hollow cylinder. Household appliance (1) according to one of the preceding claims, characterized in that the tub (4) is designed in several parts and has a front container segment (14a) and a separate rear container segment (14b), the rear container segment (14b) being made of plastic . Household appliance (1) after Claim 14 , characterized in that the plastic has talc-reinforced polypropylene.

Images