EP4124280B1 - Dishwasher with moving and lifting mechanism - Google Patents

Description

The invention relates to a movement and lifting mechanism for moving a washing basket out of a washing container of a dishwasher and lifting it, with a lifting device for the washing basket, which has a four-bar linkage that has a coupling member on the washing basket side, a base member fixed on the washing container side and a first and a second link, each of which is pivotably arranged on the base member at one end and on the coupling member at the other end, with a movement device for the washing basket, which has a rail device, wherein the coupling member of the lifting device is arranged on the rail device, and with an operating device pivotably arranged on the washing basket.

Dishwasher baskets in general and movement and lifting mechanisms for such dishwasher baskets in particular are well known from the state of the art, which is why a separate printed proof is not required at this point. For this reason, reference is only made to the WO 2019/219433 A1 referred to.

A typical dishwasher has a washing container that provides a washing chamber. This is accessible to the user via a loading opening that can be closed fluid-tight using a pivoting washing chamber door. When used as intended, the washing container is used to hold items to be cleaned, which can be, for example, dishes, cutlery and/or the like.

To load a dishwasher with wash ware, a wash ware carrier is usually used, which can be moved through the loading opening, either into the wash chamber or out of it, depending on the direction of movement. A dishwasher typically has two or three wash ware carriers, depending on the design. The wash ware carriers are usually designed as wash baskets, whereby according to a typical design a lower basket, a An upper basket arranged in the same height as the dishwasher and, optionally, a cutlery drawer arranged in the same height as the upper basket are provided.

According to a common and commercially available kitchen design, a dishwasher is usually installed upright beneath a kitchen worktop. As a result, the lower basket is below the knee height of an adult when it is pulled out for loading or unloading. As a result, the user can only load or unload the lower basket properly while bending over, which is perceived as disadvantageous, particularly when handling bulky and possibly heavy items to be washed, such as those typically placed in the lower basket.

In order to counteract this problem, the state of the art has developed lifting and moving mechanisms that allow the lower basket to be raised to the same height as the upper basket. This makes it easier for the user to load and unload the lower basket. Such a lifting and moving mechanism is shown, for example, in the WO 2019/219433 A1 .

The DE 102018111657 A1 discloses a movement and lifting mechanism for moving a washing basket out of a washing container of a dishwasher and lifting it, with a lifting device for the washing basket, which has a four-bar linkage, which has a coupling member on the washing basket side, a base member fixed on the washing container side and a first and a second link, which are each pivotably arranged on the base member at one end and on the coupling member at the other end, and with a movement device for the washing basket, which has a rail device, wherein the coupling member of the lifting device is arranged on the rail device.

Although previously known displacement and lifting mechanisms from the state of the art have proven themselves in everyday practical use, there is a need for improvement, particularly with regard to even more simplified handling by the user. It is therefore the object of the invention to further develop a displacement and lifting mechanism of the generic type in such a way that simplified handling by the user is possible.

To solve this problem, the invention proposes a dishwasher with a travel and lifting mechanism having the features of claim 1.

What is important in accordance with the invention of the proposed travel and lifting mechanism is, first of all, that a lifting device is provided which has a seven-joint coupling mechanism instead of a four-joint coupling mechanism, with a travel device being provided in combination with this coupling mechanism. What is also important in accordance with the invention is that means are provided for releasably coupling the operating device and the locking link. In this respect, a distinction can be made between an uncoupled state of the operating device and lifting device on the one hand and a coupled state of the operating device and lifting device on the other. In an advantageous manner, the user can either move the washing container or raise it. The washing container can be moved when the operating device and lifting device are not coupled, whereas the washing container can be raised when the operating device and the lifting device are coupled to one another.

In contrast to a previously known four-joint coupling mechanism, the seven-joint coupling mechanism provided according to the invention is supplemented by two links, namely the locking link on the one hand and the coupling link on the other. The locking link and the coupling link are pivotably connected to one another and, in addition, the locking link on the coupling link and the coupling link on the first link are each pivotably arranged.

This embodiment according to the invention, in combination with the possibility of being able to detachably couple the operating device and the locking handlebar to one another, provides numerous advantages which ultimately enable simplified handling by the user.

The dishwasher has at least one washing basket. As is usually the case, it can in particular have several washing baskets, for example at least one lower basket and an upper basket above it.

According to the invention, a dishwashing basket, such as a lower basket, can take on two positions of use at the user's discretion. The dishwashing basket can be adjusted by the user using the The movement device can be moved from its non-use position in the washing chamber to a first use position outside the washing chamber. Such a movement is possible when the operating device and locking link are decoupled. The lifting device remains unused in this case.

As soon as the operating device and the locking link are detachably coupled to one another by the user using the means provided for this purpose, the lifting device is activated, which allows the washing basket, in particular the lower basket, to be lifted out of the washing container, preferably to the same height as a washing basket above it, which is referred to below as the upper basket. In this position, the washing basket, in particular the lower basket, is in its second position of use. In both the first and second positions of use, the washing basket is arranged above the open washing compartment door, so that any liquids or dirt dripping from the washing basket or from items to be washed in the washing basket are caught on the inside of the open washing compartment door.

The advantage of the design according to the invention is therefore, among other things, that the washing basket can be optionally pulled out of the washing compartment like a conventional washing basket, but at the same time it is also possible to raise the washing basket, in particular the lower basket, to the height of an upper basket. The fact that both the possibility of full extension and lifting is possible brings with it the advantage that the washing compartment floor provided by the washing container is accessible in a simplified manner, namely when the washing basket is only in the extended position, but not in the raised position. Conventional four-bar linkages cannot distinguish between these two positions of use, so that according to the state of the art the washing basket is either in its non-use position or in its raised position of use. In both cases, however, the washing compartment floor is difficult or even impossible to access.

The user's accessibility to the bottom of the dishwasher is particularly important in order to be able to reach the salt refill opening, which is typically located here.

Furthermore, the distinction between lifting and pulling out is advantageous when a user wants to load more than one item of dishware into the dishwasher. Can the dishwashing basket, especially the lower basket, be adjusted in accordance with the state of the art? Technology can only be swivelled upwards, so in order to properly load the other dishwashing baskets, it is necessary to swivel the raised dishwashing basket, especially the lower basket, back down again each time before access to the other dishwashing baskets is possible. This is perceived as cumbersome by the user. The design according to the invention provides a remedy here in the manner already described, as it makes it possible to distinguish between two positions of use, namely the fully extended position on the one hand and the raised position on the other.

The user can operate the washing basket intuitively and easily using the operating device provided by the washing basket and pivotably arranged on the washing basket. The user either pulls on the operating device with the aim of moving the washing basket out of the washing container in the usual way, or the user can twist the operating device and pivot it upwards in the vertical direction thanks to its pivotable arrangement, which then automatically leads to a detachable coupling of the operating device and the locking link, with the result that the washing basket is raised. The user can therefore operate the device in a simple way that is self-explanatory and intuitive and enables the operating device and the locking link, i.e. the lifting device, to be automatically coupled or uncoupled depending on the desired position of use of the washing basket.

Furthermore, the design according to the invention provides the advantage of an end position lock in the raised, i.e. second, use position of the washing basket. This prevents the washing basket from sinking unintentionally and ensures that the user must first unlock it before the washing basket can be swung back into the first use position.

The construction according to the invention is also simple in construction and therefore robust, less susceptible to failure and durable.

Overall, the invention proposes a simple and cost-effective mechanism which, in order to simplify the handling of a washing basket, makes it possible to distinguish between two positions of use, namely a fully extended, first position of use and a highly pivoted, second position of use. position of use.

According to a further feature of the invention, it is provided that the rail device has a top rail, a middle rail and a body rail, wherein the top rail is slidably arranged on the middle rail and the middle rail is slidably arranged on the body rail, wherein the top rail is arranged on the washing basket and wherein the coupling member is arranged on the body rail.

The rail device has three individual rails that are arranged in a telescopic manner, namely an upper rail, a middle rail and a body rail. The upper rail can be moved in relation to the middle rail and the middle rail in relation to the body rail, which results in the overall telescopic nature of the rail device. The rail device thus makes it possible to move the rinsing basket from its non-use position, in which the rinsing basket is in the rinsing container, to its first use position, in which the rinsing basket is moved out of the rinsing container.

If the washing basket is moved out of the washing container, the operating device is not coupled to the locking link of the lifting device, so that the lifting device remains unused. The washing basket is moved purely in a translatory manner thanks to the rail device.

According to the invention, it is further provided in this context that the upper rail is arranged on the washing basket, with the coupling element of the seven-joint coupling mechanism according to the invention being located on the body rail. In the lifting case, the washing basket is therefore lifted with the rail device in between.

According to a further feature of the invention, it is provided that the means for detachable coupling have a locking pawl arranged rotatably on the locking link, which provides a receiving pin. This receiving pin serves to couple the washing basket to the lifting device, in particular to couple the operating device and the locking link, in the event that the user wishes to lift the washing basket. For this purpose, according to a further feature of the invention, it is provided that the means for detachable coupling have a receiving pin provided by the washing basket, namely by the operating device arranged pivotably on the washing basket. which interacts with the receiving pin of the locking pawl. In the event that the user wishes to lift the washing basket, the receiving pin of the lifting device provided by the pawl engages in a correspondingly designed receptacle on the operating device. This engagement of the receiving pin in the associated receptacle takes place automatically because the washing basket is raised as a result of a user-side twisting and lifting movement of the operating device, so that the receptacle of the washing basket or the operating device catches the receiving pin. In the case of a purely translational movement of the washing basket to transfer it to the first position of use, such a lifting of the washing basket does not take place, so that the receptacle on the washing basket or the operating device is guided past below the receiving pin, as a result of which there is no coupling between the receptacle and the receiving pin.

The construction according to the invention thus advantageously enables an automatic coupling of the operating device and the locking handlebar as a result of an intuitive operation of the operating device by a user.

According to a further feature of the invention, it is provided that the means for detachable coupling have a bearing pin arranged on the locking link. When lifting, this bearing pin defines the axis of rotation around which the lifting device pivots to lift the washing basket. According to a further feature of the invention, the bearing pin interacts with a further receptacle provided by the washing basket, namely also by the operating device pivotably arranged on the washing basket, into which the bearing pin engages when lifting as intended. When the washing basket is lifted as intended, the receiving pin engages in a first receptacle on the washing basket or operating device side and the bearing pin engages in a second receptacle on the washing basket or operating device side. As soon as the pins are completely immersed in their respective receptacles, a coupling of the washing basket and lifting device, in particular a coupling of the operating device and locking link, is achieved for a proper lifting of the washing basket. At the moment of coupling, the two pins each take on another function.

The mounting pin is arranged on a locking pawl, which in turn is pivotably arranged on the locking link. If the mounting pin is taken along by the corresponding mounting on the rinsing basket or control device side, this leads to a twisting of the pawl, which releases a locking mechanism blocking the lifting device. Inserting the receiving pin into the corresponding receptacle not only creates a coupling, but also removes the locking mechanism of the lifting device, so that the washing basket can be lifted in the first place.

The bearing pin, which is located in the second holder when coupled, ensures that the axes of rotation of the locking link and those of the operating device are on top of each other, i.e. they are congruent, so that the washing basket can be lifted without a guide rail, which avoids the frictional forces that would otherwise arise. This ensures that no relative movement takes place between the locking link and the operating device during the lifting movement. It is advantageous in that when the locking link and the operating device are coupled, the respective axes of rotation are on top of each other.

According to a further feature of the invention, the washing basket, namely the operating device arranged on the washing basket so that it can pivot, has a guide rail on the locking link side. This guide rail ensures that when the operator pivots the operating device in order to lift the washing basket, the washing basket or the operating device is not lifted too far, so that the receiving pin can be safely inserted into the associated receptacle in the manner already described. Incorrect operation by the user insofar as the washing basket with its receptacle is lifted over the associated receiving pin is thus safely ruled out.

According to a further feature of the invention, the guide rail works together with a stop bolt arranged on the locking link. When operating, the washing basket can therefore be raised by the user until the guide rail on the washing basket or operating device side rests against the stop bolt on the locking link side. In this position of the washing basket, the receiving pin can safely retract into the corresponding receptacle if the user continues to move the washing basket.

According to a further feature of the invention, the locking pawl has a locking pin. This locking pin ensures that the lifting device is locked so that the lifting device is blocked if it is not used as intended. For this purpose, according to a further feature of the invention, the coupling member has an abutment that interacts with the locking pin. This can be provided, for example, by a locking tooth on the coupling member. The locking pin rests against this locking tooth when the washing basket is in its non-use position. The lifting device is then locked so that it is not possible to lift the washing basket.

If the washing basket is moved exclusively in a translational manner, i.e. is moved into its first position of use, the locking pin remains in its position against the locking tooth. The lifting device is therefore still locked, which prevents the washing basket from being lifted out of the first position of use. Incorrect operation is therefore definitely ruled out.

Only if the user wishes to lift the washing basket from the non-use position and the operating device is therefore pivoted while the washing basket is being moved, will the washing basket be lifted in such a way that the receiving pin provided by the locking pawl enters the corresponding receptacle on the washing basket, in particular on the operating device, in the manner already described. As a result, the locking pawl also pivots, with the result that the locking pin provided by the locking pawl moves out of its locked position on the coupling member, so that the locking of the lifting device is released, with the consequence that the washing basket can be lifted using the lifting device.

According to a further feature of the invention, the locking link has a receptacle for the locking bolt that provides an end stop. Over-tightening of the locking pawl is thus avoided. In the raised, i.e. second, use position of the washing basket, the locking pawl is held securely in position by the locking link, namely by the locking bolt of the locking pawl resting on the end stop of the locking link.

Fig. 1

in schematischer Perspektivansicht einen Spülbehälter mit einem als Unterkorb ausgebildeten Spülkorb in Nichtgebrauchsstellung;

Fig. 2

in schematischer Perspektivansicht den Unterkorb nach Fig. 1;

Fig. 3

in schematischer Seitenansicht den Unterkorb nach Fig. 2;

Fig. 4

in schematischer Perspektivansicht einen Spülbehälter mit einem als Unterkorb ausgebildeten Spülkorb in erster Gebrauchsstellung;

Fig. 5

in schematischer Perspektivansicht den Unterkorb nach Fig. 4;

Fig. 6

in schematischer Seitenansicht den Unterkorb nach Fig. 5;

Fig. 7

in schematischer Perspektivansicht einen Spülbehälter mit einem Unterkorb in zweiter Gebrauchsstellung;

Fig. 8

in schematischer Perspektivansicht den Unterkorb nach Fig. 7;

Fig. 9

in schematischer Seitenansicht den Unterkorb nach Fig. 8;

Fig. 10

in schematischer Perspektivansicht eine Bedieneinrichtung;

Fig. 11

in schematischer, spülkorbzugewandter Perspektivansicht einen Arretierlenker in einer ersten Stellung;

Fig. 12

den Arretierlenker nach Fig. 11 in einer spülkorbabgewandten Ansicht;

Fig. 13

in schematischer, spülkorbzugewandter Perspektivansicht einen Arretierlenker in einer zweiten Stellung;

Fig. 14

den Arretierlenker nach Fig. 13 in einer spülkorbabgewandten Ansicht;

Fig. 15

in schematischer Perspektivdarstellung einen Unterkorb;

Fig. 16

in einer Detailansicht einen Ausschnitt nach Fig. 15;

Fig. 17

in einer Detailansicht einen Ausschnitt nach Fig. 15;

Fig. 18

in einer teilgeschnittenen Draufsicht einen Spülbehälter;

Fig. 19

in einer schematischen Schnittdarstellung den Unterkorb nach Fig. 18 gemäß Schnittlinie A-A in einer ersten Stellung;

Fig. 20

in einer schematischen Schnittdarstellung den Unterkorb nach Fig. 18 gemäß Schnittlinie A-A in einer zweiten Stellung;

Fig. 21

in einer schematischen Schnittdarstellung den Unterkorb nach Fig. 18 gemäß Schnittlinie A-A in einer dritten Stellung;

Fig. 22

in schematischer Seitenansicht einen Unterkorb in einer ersten Stellung;

Fig. 23

in einer Detailansicht einen Ausschnitt nach Fig. 22;

Fig. 24

in schematischer Seitenansicht einen Unterkorb in einer zweiten Stellung;

Fig. 25

in einer Detailansicht einen Ausschnitt nach Fig. 24;

Fig. 26

in schematischer Seitenansicht einen Unterkorb in einer dritten Stellung;

Fig. 27

in einer Detailansicht einen Ausschnitt nach Fig. 26;

Fig. 28

in schematischer Perspektivdarstellung einen Unterkorb in einer ersten Stellung;

Fig. 29

in einer Detailansicht einen Ausschnitt nach Fig. 28;

Fig. 30

in schematischer Perspektivdarstellung einen Unterkorb in einer zweiten Stellung;

Fig. 31

in einer Detailansicht einen Ausschnitt nach Fig. 30;

Fig. 32

in schematischer Perspektivdarstellung einen Unterkorb in einer dritten Stellung;

Fig. 33

in einer Detailansicht einen Ausschnitt nach Fig. 32;

Fig. 34

in schematischer Seitenansicht einen Unterkorb in einer weiteren Stellung;

Fig. 35

in einer Detailansicht einen Ausschnitt nach Fig. 34;

Fig. 36

in schematischer Perspektivdarstellung einen Unterkorb in einer weiteren Stellung;

Fig. 37

in einer Detailansicht einen Ausschnitt nach Fig. 36;

Fig. 38

in schematischer Seitenansicht einen Unterkorb in einer weiteren Stellung;

Fig. 39

in einer Detailansicht einen Ausschnitt nach Fig. 38;

Fig. 40

in schematischer Perspektivansicht einen Unterkorb in einer weiteren Stellung;

Fig. 41

in einer Detailansicht einen Ausschnitt nach Fig. 40;

Fig. 42

in schematischer Seitenansicht einen Unterkorb in einer weiteren Stellung;

Fig. 43

in einer Detailansicht einen Ausschnitt nach Fig. 42;

Fig. 44

in schematischer Perspektivdarstellung einen Unterkorb in einer weiteren Stellung;

Fig. 45

in einer Detailansicht einen Ausschnitt nach Fig. 44;

Fig. 46

in schematischer Ansicht einen Unterkorb in einer weiteren Stellung;

Fig. 47

in einer Detailansicht einen Ausschnitt nach Fig. 46;

Fig. 48

in schematischer Perspektivdarstellung einen Unterkorb in einer weiteren Stellung;

Fig. 49

in einer Detailansicht einen Ausschnitt nach Fig. 48;

Fig. 50

in schematischer Seitenansicht einen Unterkorb in einer weiteren Stellung;

Fig. 51

in einer Detailansicht einen Ausschnitt nach Fig. 50;

Fig. 52

in einer schematischen Seitenansicht einen Arretierlenker;

Fig. 53

in schematischer Seitenansicht einen Arretierlenker gemäß einer alternativen Ausführung in einer ersten Stellung und

Fig. 54

in schematischer Seitenansicht den Arretierlenker nach Fig. 53 in einer zweiten Stellung.

Further features and advantages of the invention will become apparent from the following description based on the figures.

Fig. 1

in schematic perspective view a rinsing container with a Lower basket designed as a rinsing basket in the non-use position;

Fig. 2

in schematic perspective view the lower basket Fig. 1 ;

Fig. 3

in schematic side view the lower basket Fig. 2 ;

Fig. 4

in a schematic perspective view of a washing container with a washing basket designed as a lower basket in the first position of use;

Fig. 5

in schematic perspective view the lower basket Fig. 4 ;

Fig. 6

in schematic side view the lower basket Fig. 5 ;

Fig. 7

in schematic perspective view a rinsing container with a lower basket in the second position of use;

Fig. 8

in schematic perspective view the lower basket Fig. 7 ;

Fig. 9

in schematic side view the lower basket Fig. 8 ;

Fig. 10

in schematic perspective view an operating device;

Fig. 11

in a schematic perspective view facing the washing basket, a locking link in a first position;

Fig. 12

the locking handlebar Fig. 11 in a view facing away from the dishwasher basket;

Fig. 13

in a schematic perspective view facing the washing basket, a locking link in a second position;

Fig. 14

the locking handlebar Fig. 13 in a view facing away from the dishwasher basket;

Fig. 15

in schematic perspective view a lower basket;

Fig. 16

in a detailed view a section after Fig. 15 ;

Fig. 17

in a detailed view a section after Fig. 15 ;

Fig. 18

in a partially sectioned top view of a rinsing container;

Fig. 19

in a schematic sectional view of the lower basket Fig. 18 according to section line AA in a first position;

Fig. 20

in a schematic sectional view of the lower basket Fig. 18 according to section line AA in a second position;

Fig. 21

in a schematic sectional view of the lower basket Fig. 18 according to section line AA in a third position;

Fig. 22

in schematic side view a lower basket in a first position;

Fig. 23

in a detailed view a section after Fig. 22 ;

Fig. 24

in schematic side view a lower basket in a second position;

Fig. 25

in a detailed view a section after Fig. 24 ;

Fig. 26

in schematic side view a lower basket in a third position;

Fig. 27

in a detailed view a section after Fig. 26 ;

Fig. 28

in schematic perspective view a lower basket in a first position;

Fig. 29

in a detailed view a section after Fig. 28 ;

Fig. 30

in schematic perspective view a lower basket in a second position;

Fig. 31

in a detailed view a section after Fig. 30 ;

Fig. 32

in schematic perspective view a lower basket in a third position;

Fig. 33

in a detailed view a section after Fig. 32 ;

Fig. 34

in schematic side view a lower basket in another position;

Fig. 35

in a detailed view a section after Fig. 34 ;

Fig. 36

in schematic perspective view a lower basket in another position;

Fig. 37

in a detailed view a section after Fig. 36 ;

Fig. 38

in schematic side view a lower basket in another position;

Fig. 39

in a detailed view a section after Fig. 38 ;

Fig. 40

in schematic perspective view a lower basket in another position;

Fig. 41

in a detailed view a section after Fig. 40 ;

Fig. 42

in schematic side view a lower basket in another position;

Fig. 43

in a detailed view a section after Fig. 42 ;

Fig. 44

in schematic perspective view a lower basket in another position;

Fig. 45

in a detailed view a section after Fig. 44 ;

Fig. 46

in schematic view a lower basket in another position;

Fig. 47

in a detailed view a section after Fig. 46 ;

Fig. 48

in schematic perspective view a lower basket in another position;

Fig. 49

in a detailed view a section after Fig. 48 ;

Fig. 50

in schematic side view a lower basket in another position;

Fig. 51

in a detailed view a section after Fig. 50 ;

Fig. 52

in a schematic side view of a locking handlebar;

Fig. 53

in schematic side view a locking link according to an alternative embodiment in a first position and

Fig. 54

in schematic side view the locking handlebar Fig. 53 in a second position.

Fig. 1 shows a schematic perspective view of a washing container of a dishwasher that is not otherwise shown in detail in the figures. The washing container 1 in turn provides a washing chamber 2, which, when used as intended, serves to hold the items to be cleaned.

The washing chamber 2 is accessible to the user through a loading opening 4. The loading opening 4 can be closed fluid-tight by means of a washing chamber door 3, whereby the washing chamber door 3 can be pivoted about a horizontal pivot axis and can be moved by the user from a closed position into the Fig. 1 shown open position and vice versa.

When used as intended, washware carriers are used to hold the washware, whereby in the embodiment shown, a wash basket 5 in the form of a lower basket is provided as the washware carrier.

Fig. 1 shows the rinsing basket 5 in its non-use position, in which the rinsing basket 5 is completely moved into the rinsing compartment 2 against the pull-out direction 6, so that the rinsing compartment door 3 can be moved from its open position into its closed position can be transferred.

Fig. 4 shows the rinsing basket in a first position of use, in which the rinsing basket 5 is moved out of the rinsing compartment 2 in the pull-out direction 6.

Fig. 7 shows a schematic perspective view of the washing basket 5 in a second position of use, in which the washing basket 5 is pivoted out of the washing compartment 2, being raised upwards in the height direction 49. In this second position of use, the washing basket 5 serving as the lower basket is at the height level of an upper basket not shown in detail in the figures.

To transfer the rinsing basket 5 from the non-use position to Fig. 1 into the first use position according to Fig. 4 or into the second use position after Fig. 7 The travel and lifting mechanism 7 provided according to the invention serves for this purpose. The travel and lifting mechanism 7 has a lifting device 8 on the one hand and a travel device 19 on the other hand, as is particularly shown in the illustration according to Fig. 5 As can be seen from the illustration Fig. 5 As is also the case, two displacement and lifting devices 7 designed according to the invention are provided for a washing basket 5, namely with reference to the drawing plane according to Fig. 5 both a left-hand and a right-hand travel and lifting mechanism 7.

To transfer the rinsing basket 5 from the non-use position to Fig. 1 into the first use position after Fig. 4 The moving device 19 serves to move the washing basket 5 from the non-use position to Fig. 1 into the second use position after Fig. 7 to transfer.

As already mentioned above, Fig. 5 As explained, two movement and lifting mechanisms 7 are provided for each washing basket 5, namely one movement and lifting mechanism 7 on the left and one on the right. For the sake of simplicity, reference is made below only to one of the two movement and lifting mechanisms 7.

As can be seen particularly from a summary of the Figures 3 and 6 The travel device 19 has a rail device 20. A rail device 20 has a total of three rails which are designed to be telescopic relative to one another. Specifically, there is a top rail 27, a middle rail 28 and a body rail 29 is provided, wherein the upper rail 27 is arranged on the middle rail 28 so as to be movable in relation to the middle rail 28 and the middle rail 28 is arranged on the carcass rail 29 so as to be movable in relation to the body rail 29.

To transfer the rinsing basket 5 from the non-use position to Fig. 1 into the first use position after Fig. 5 The previously described rail device 20 serves as this can be seen, for example, from a comparison of the illustrations according to the Figures 3 and 6 results.

To transfer the rinsing basket 5 from the non-use position to Fig. 1 into the second use position after Fig. 7 The lifting device 8 serves as this can be seen particularly from a summary of the Figures 3 and 9 results.

The lifting device 8 has a seven-joint coupling gear 18, the structure of which can be seen in particular from the illustration according to Fig. 3 results.

The coupling gear 18 has a coupling member 10 arranged on the rail device 20 of the washing basket 5. A base member 11 fixed on the washing container side is also provided. This is arranged in a positionally secure manner, for example, on the inside of the washing container on the associated washing chamber wall.

Furthermore, two links 12 and 13 are provided, with both links 12, 13 being arranged so as to be pivotable at one end on the base member 11 and at the other end on the coupling member 10. The first link 12 with the base member 11 and the coupling member 10 forms the pivot points 14 and 16 and the second link 13 with the base member 11 and the coupling member 10 forms the pivot points 15 and 17.

The coupling link 10, the base link 11, the first link 12 and the second link 13 together form a four-joint coupling mechanism 9 known per se from the prior art as a lifting device.

The lifting device 8 according to the invention is characterized in that the four-joint coupling mechanism 9 is supplemented by a locking link 22 and a coupling link 23 to form a seven-joint coupling mechanism 18, wherein the locking link 22 is pivotable at one end on the coupling member 10 and pivotable at the other end on the Coupling link 23 is arranged and the coupling link 23 is arranged pivotably at one end on the first link 12 and pivotably at the other end on the locking link 22. The locking link 22 is thus arranged pivotably about the pivot point 26 on the coupling member 10 and the coupling link 23 is arranged pivotably about the pivot point 24 on the first link 12. The locking link 22 and the coupling link 23 also form the common pivot point 25. Overall, a seven-joint coupling gear 18 with the pivot points 14, 15, 16, 17, 24, 25 and 26 is provided.

The other Figures 10 to 54 show in detail the functioning of the travel and lifting mechanism 7 according to the invention in different views.

For a user-side movement or lifting of the washing basket 5, the washing basket 5 has an operating device 21 arranged pivotably on the washing basket 5. This is shown in a schematic perspective view in Fig. 10 shown.

As can be seen from the presentation Fig. 10 The operating device 21 is designed in the manner of a frame 42. This consists of two side struts 43 and 44, a cross strut 45 and an operating handle 46 opposite the cross strut 45. The two side struts 43 and 44 each have a first receptacle 40 for receiving a receiving pin and a second receptacle 41 for receiving a bearing pin, which pins are provided by the respective locking link 22, as will become apparent from the further description.

The Figures 11 to 14 show a locking link 22 from different views and in different positions with respect to the locking pawl 30 provided by the locking link 22.

As a summary of the Figures 11 to 14 As can be seen, the locking link 22 has a stop pin 34 and a bearing pin 35 on its side facing the washing basket. In addition, a locking pawl 30 is provided, which is designed in the manner of a tab and is arranged on the locking link 22 so as to be pivotable about the pivot point 31. The locking pawl is subjected to force in an anti-clockwise direction by means of a torsion spring (not shown in the figures), as is the case in the Figures 11 and 13 drawn arrows symbolize.

The pawl 30 carries a receiving pin 32 and a locking pin 33 on the side opposite the receiving pin.

When a force is applied to the pawl 30 against the spring force acting on the pawl 30, the pawl 30 can be moved with reference to the plane of the drawing, for example according to the Figures 11 and 13 clockwise to the left until the locking pin 33 comes to rest on the end stop 37 of the holder 36, as shown in the Figures 13 and 14 show.

The Figures 15, 16 and 17 show the displacement and lifting mechanism 7 according to the invention in the non-raised position of the washing basket 5, wherein the washing basket 5 is in its first position of use, i.e. in its position moved out of the washing chamber 1. The lifting mechanism 8 is locked and cannot be moved. This is due to the fact that the locking pin 33 of a locking link 22 rests beneath a locking tooth 39 of the respective associated coupling member 10, wherein the locking tooth 39 thus represents an abutment for the locking pin 33.

The axis of the bearing pin 35 is simultaneously the axis of rotation of the entire assembly of the operating device 21 relative to the body rail 29. Since the locking link 22 and the pawl 30 perform a vertical movement around the pivot point or the axis of rotation of the bearing pin 35 relative to the locking tooth 39 at the beginning of a lifting movement, this movement is only possible if the pawl 23 or the locking pin 33 provided by it are rotated forwards to the end stop 37. This is evident from a summary of the Figures 18 to 21 .

Shown in three different positions in the Figures 19, 20 and 21 are the four functional elements: support pin 32, stop pin 34, guide rail 47 and the holder 40 on the side of the washing basket or control device. Figures 19, 20 and 21 the three positions into which the operator can transfer the travel and lifting mechanism 7 by simply pulling on the operating device 21 are shown.

As can be seen in particular from the illustration Fig. 10 visible, the holder 40 for the support pin 32 is in the vertical direction 49 below the guide rail 47 This is also evident from the representation, for example, according to Fig. 19 . Due to this arrangement, it is possible to move the washing basket 5 out of the washing container 1 by means of the displacement device 19 without the receiving pin 32 moving into the receptacle 40. It is thus possible to fully pull out the washing basket 5 without lifting the washing basket 5. This is shown in particular by Fig. 19 . The receiving pin 32 is located below the guide rail 47 when this is moved in the direction of the arrow and therefore cannot engage in the receptacle 40. The locking pawl 30 remains in the locked position, as shown above with reference to the Figures 15 to 17 explained.

If the user wants to lift the washing basket 5, he or she intuitively pulls the operating device 21 upwards, as shown in Fig. 20 indicated by the arrow. As a result of this lifting, the washing basket 5 moves upwards in the height direction 49 until the guide rail 47 comes to rest on the stop pin 34.

At the same time or subsequently, the user pulls the rinsing basket 5 out of the rinsing container 1, as shown by the arrow Fig. 21 By pulling the operating device 21 further, the guide rail 47 is guided above the receiving pin 32. By pulling the washing basket 5 out further, the receiving pin 32 now engages in the holder 40 during the further movement. The locking pawl 30 is thus rotated forwards from the locked position until it stops. The lifting mechanism 8 is now unlocked and the washing basket 5 can be lifted. The two movements can be Fig. 20 and 21 parallel or superimposed.

The process described above is shown in more detail in the following figures.

From the Figures 22 to 25 it can be seen that the stop bolt 34 is located above the guide rail 47 in the pushed-in position of the washing basket 5. However, this ends before the receiving pin 32, so that the washing basket 5 can be pulled upwards by means of the operating device 21 until the guide rail 47 comes to rest on the stop bolt 34, as can be seen in particular from Fig. 25 recognizable.

The Figures 26 and 27 show that in this position the locking pawl 30 cannot be unlocked, since the receiving pin 32 is located above the guide rail 47 and therefore cannot engage in the receiving pin 40. The further receiving pin 41 can also pass the bearing pin 35, since the receiving pin 41 in the extension direction 6 is both is open at the front and the back when the operating device 21 is not rotated. The receiving pin 32 also prevents the operating device from being lifted or rotated as long as the receiving pin 32 is located above the guide rail 47. For this reason, the holder 41 on the rinsing basket or operating device side can also be moved past the bearing pin 35 without collision.

The Figures 28 to 31 show the function of the holder 41 for the bearing pin 32 in more detail.

The holder 41 is arranged on the operating device 21 and can thus be rotated in relation to the washing basket 5. In the lowered position of the operating device 21, the bearing surfaces of the holder 41 are aligned horizontally, as in Fig. 29 In this position, the holder 41 can be moved past the associated bearing pin 35. If the operating device 21 is rotated, as in Fig. 31 As shown, the axes of the bearing pin 35 and those of the operating device 21 are coincident with each other, wherein in this position a sliding movement in both directions is blocked by the rotated holder 41.

According to the Figures 32 to 35 the receiving pin 32 arranged on the locking pawl 30 is engaged in the receiving element 40 on the side of the washing basket or operating device. However, the locking pawl is still locked. The lifting device cannot yet be moved. The receiving element 41 for the bearing pin 35 and the axis of rotation of the operating device 21 are not yet coincident with each other, as can be seen in particular Fig. 35 can be recognized.

By further lifting the washing basket 5 according to the Figures 36 to 38 the locking pawl 30 is pulled into its end position. This unlocks the lifting device 8. At the same time, the holder 41 for the bearing pin 35 slides over the bearing pin 35 and the axes of rotation of the operating device 21 and the locking link 22 are coincident with each other. Both are now coupled to each other.

Like the other Figures 40 to 50 As can be seen, the receptacle 41 for the bearing pin 35 blocks a horizontal pull-out movement of the washing basket 5 in relation to the lifting device 8 as soon as the lifting device 8 is slightly rotated. At the same time, it is no longer possible for the locking pawl 30 to move back into its locked position as soon as the operating device 21 is coupled to the locking link 22.

The Figures 48 to 50 show the locked end position in the raised position of the washing basket 5, in which it can be loaded and unloaded. The lifting device 8 is reached by an over-center position between the coupling link 10 and the operating device 21. In the over-center position, the locking link 22 is rotated further due to the weight of the washing basket 5 until it comes to rest on the stop 48.

How Fig. 52 As the arrows show, increased frictional forces between the guide rail 47 and the receiving pin 32 can lead to unwanted unlocking before the operating device 21 and the locking link 22 are coupled to one another. This problem can arise in particular if the user pulls the washing basket 5 out of the washing container 1 without wanting to operate the lifting device 8. For example, if the user pulls forcefully on the operating device 21, a high sliding friction force can arise on the receiving pin 32, which then rotates it in the direction of its unlocked position. The same could also be the case if the guide rail 47 is located above the receiving pin 32 and the operating device 21 is pressed down about the pivot point 50, that is, if the user wants to lift the washing basket 5 but the operating device 21 and the locking link 22 are not yet coupled.

To address this problem, in accordance with the Figures 53 and 54 the receiving pin 32 may be designed in a different form than the circular shape. The different contact points of the guide rail 47 and the receiving pin 32 above and below always cause a torque in the direction of the locked position due to the contour of the receiving pin 32 shown, since the line of action of the resulting force when the operating device 21 is pressed down is different with respect to the plane of the drawing of the Figures 53 and 54 to the left of the pivot point of the pawl 30 and vice versa when pulled to the right of the pivot point. This prevents unintentional unlocking.

As can be seen from the above explanation, the solution according to the invention enables the washing basket 5 to be fully pulled out in the non-raised position up to the inner door panel provided on the inside of the washing compartment door. The advantages lie in the flexibility when loading the dishwasher by the user while the salt container lid is accessible.

In addition, the proposed mechanism is relatively simple in design and therefore cost-effective.

Another advantage is that raising and lowering is significantly more comfortable due to reduced actuation forces. High forces are transmitted during a lifting movement and no link or similar is required because the rotation axes of the operating device 21 and the locking link 22 are located one above the other. Full extension is also possible without restriction, i.e. the lifting mechanism can be ignored at any time, meaning that the refill nozzle for the salt container is easily accessible to the user.

reference sign

1 rinsing container 34 stop bolt 2 dishwashing area 35 bearing journal 3 dishwasher door 36 Recording 4 loading opening 37 end stop 5 dish rack 38 abutment 6 extension direction 39 ratchet 7 travel and lifting mechanism 40 mounting pin 8 lifting device 41 bearing journal holder 9 four-bar linkage 42 Frame 10 coupling link 43 side strut 11 base member 44 side strut 12 first driver 45 cross brace 13 second driver 46 operating handle 14 pivot point 47 guide rail 15 pivot point 48 end stop over-dead center position 16 pivot point 49 elevation direction 17 pivot point 50 pivot point 18 seven-joint coupling mechanism 19 traversing device 20 rail installation 21 control device 22 locking handlebars 23 coupling link 24 pivot point 25 pivot point 26 pivot point 27 top rail 28 middle rail 29 cabinet rail 30 pawl 31 pivot point 32 mounting pin 33 locking pin

Claims (12)

1. Dishwasher comprising a washing container (1) which provides a washing chamber (2), and comprising a dishwasher rack (5) which is movably received in the washing container (1), and comprising a moving and lifting mechanism for moving and lifting the dishwasher rack (5) out of the washing container (1), the moving and lifting mechanism having:

   a lifting device (8) for the dishwasher rack (5), which lifting device has a four-bar linkage (9) which has a coupling member (10) on the dishwasher rack side, a base member (11) fixed on the washing container side, and a first and a second link (12, 13), which are each pivotably arranged on the base member (11) at one end and on the coupling member (10) at the other end, a moving device (19) for the dishwasher rack (5), which moving device has a rail device (20), the coupling member (10) of the lifting device (8) being arranged on the rail device (20), and an operating device (21) pivotably arranged on the dishwasher rack (5),

   characterised in that

   the four-bar coupling mechanism (9) is supplemented by a locking link (22) and a coupling link (23) to form a seven-bar coupling mechanism (18), the locking link (22) being arranged so as to be pivotable at one end on the coupling member (10) and so as to be pivotable at the other end on the coupling link (23) and the coupling link (23) being arranged so as to be pivotable at one end on the first link (12) and so as to be pivotable at the other end on the locking link (22), and in that means (30, 32, 40) are provided for releasably coupling the operating device (21) and the locking link (22),

   which means are designed in such a way that, by the user pulling on the operating device (21),the dishwasher rack (5) is moved out of the washing container (1) and, by the user pivoting the operating device (21) upwards in the vertical direction, the operating device (21) and the locking link (22) are coupled and the dishwasher rack (5) is lifted.
2. Dishwasher according to claim 1, characterised in that the rail device (20) has an upper rail (27), a middle rail (28) and a carcass rail (29), the upper rail (27) being slidably arranged on the middle rail (28) and the middle rail (28) being slidably arranged on the carcass rail (29), the upper rail (27) being arranged on the dishwasher rack (5) and the coupling member (10) being arranged on the carcass rail (29).
3. Dishwasher according to either claim 1 or claim 2, characterised in that the means for releasable coupling comprise a pawl (30) which is pivotably arranged on the locking link (22) and which provides a retaining pin (32).
4. Dishwasher according to claim 3, characterised in that the means for releasable coupling comprise a receptacle (40) provided by the dishwasher rack (5), in particular the operating device (21), which receptacle cooperates with the retaining pin (32) of the pawl (30).
5. Dishwasher according to any of the preceding claims, characterised in that the means for releasable coupling comprise a bearing pin (35) arranged on the locking link (22).
6. Dishwasher according to claim 5, characterised in that the means for releasable coupling comprise a receptacle (41) provided by the dishwasher rack (5), in particular the operating device (21), which receptacle cooperates with the bearing pin (35) of the locking link (22).
7. Dishwasher according to any of the preceding claims, characterised in that the dishwasher rack (5), in particular the operating device (21), has a guide rail (47) on the locking link side.
8. Dishwasher according to claim 7, characterised in that the guide rail (47) cooperates with a stop bolt (34) arranged on the locking link (22).
9. Dishwasher according to either of the preceding claims 3 or 4, or any of claims 5 to 8 in conjunction with claim 3, characterised in that the pawl (30) provides a blocking bolt (33).
10. Dishwasher according to claim 9, characterised in that the coupling member (10) has an abutment (38) which cooperates with the blocking bolt (33).
11. Dishwasher according to claim 10, characterised in that the abutment (38) is provided by a blocking tooth (39).
12. Dishwasher according to any of the preceding claims 9 to 11, characterised in that the locking link (22) has a receptacle (36) for the blocking bolt (33), which receptacle provides an end stop (37).

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