DE102014210721A1 - Dishwasher, in particular household dishwasher - Google Patents

Abstract

The invention relates to a dishwasher (1), in particular household dishwasher, with a body (2), at least one loading level (10), at least one guide rail (12), along which the at least one loading level (10) is linearly displaceable, at least one link arm ( 14), which holds the at least one guide rail (12) pivotably on the body (2), wherein the link arm (14) on the guide rail (12) is pivotally articulated about a pivot axis (22), one at the at least one loading level (10 ) arranged blocking piece (26) and arranged on the link arm (14) locking counterpart (27), wherein the locking piece (26) and the locking counterpart (27) in a release state thereof, a linear displacement of the at least one loading level (10) along the at least one Guide rail (12) release and in a blocking state thereof a linear displacement of the at least one loading level (10) along the at least one Führungssc lock (12), wherein the locking piece (26) or the locking counterpart (27) for an adjustment of this between the locked state and the release state about a rotation axis (30) in the other of the locking piece (26) or the locking counterpart (27) is rotatable, wherein the axis of rotation (30) with the pivot axis (22) of the at least one link arm (14) is coaxial.

Description

The present invention relates to a dishwasher, in particular a domestic dishwasher.

The loading and unloading of a lower basket of a dishwasher is often perceived by users as being uncomfortable because it requires working in a stooped posture. Therefore, various mechanisms have been known from the prior art for raising the lower basket from a lower position thereof within the washing compartment of the dishwasher to an upper position outside the washing compartment.

The publication DE 10 2012 107 993 A1 discloses, for example, a sliding swivel mechanism set up for this purpose. This includes a shelf, for example, a lower basket, which is held linearly displaceable on a guide rail. The guide rail is articulated via two pivot arms on a body of the dishwasher pivotally. On the guide rail and on one of the pivot arms, a locking mechanism is arranged. The locking mechanism is adapted to prevent a simultaneous pivoting and sliding movement.

Against this background, an object of the present invention is to provide an improved dishwasher, in particular domestic dishwasher.

Accordingly, a dishwasher, in particular household dishwashing machine, with a body, at least one loading level, at least one guide rail, at least one link arm, a locking piece and a locking counterpart is provided. The at least one loading plane is linearly displaceable along the at least one guide rail. The at least one link arm holds the at least one guide rail pivotally mounted on the body. The link arm is pivotally connected to the guide rail about a pivot axis. The locking piece is arranged on the at least one loading level. The locking counterpart is arranged on the handlebar. The locking piece and the locking counterpart in a release state thereof release a linear displacement of the at least one loading plane along the at least one guide rail. In a locked state, the locking piece and the locking counterpart block a linear displacement of the at least one loading plane along the at least one guide rail. The locking piece or the locking counterpart is rotatable for an adjustment of this between the blocking state and the release state about an axis of rotation in the other of the locking piece or the locking counterpart. The axis of rotation coincides with the pivot axis of the at least one link arm.

The fact that the axis of rotation is the same axis with the pivot axis, there is a simple mechanism to prevent simultaneous pivoting and linear displacement of the loading level. In particular, it can thus be prevented that the loading plane, after it has been linearly displaced in the extension direction into its local end position and has started pivoting from its lower position into its upper position, is displaced back against the extension direction, that is to say into the washing container. Accordingly, such a relocation is preferably also excluded until the at least one loading level has been pivoted back from its upper position to its lower position. Only then is the linear relocation of the at least one loading level released into the washing container.

The simplified mechanism results in particular from the fact that the rotation of the locking piece in the locking counterpart (or vice versa) requires fewer components and / or less complex components than, for example, a link with an associated slotted guide. The rotational movement of locking piece and locking counterpart to each other in the present solution is a result of the pivotal movement of the at least one loading plane about the pivot axis. That is, the rotational movement and the pivotal movement take place simultaneously, wherein the pivoting movement is the cause of the rotational movement.

In the locked state, the locking piece and the locking counterpart engage with each other in such a way that the linear displacement of the loading plane is blocked. In particular, the locking counterpart can engage behind the locking piece (or vice versa) in the locked direction. For example, the blocking counterpart can extend around the blocking piece at least in sections (or vice versa). In the release state, on the other hand, disengagement of the locking piece and locking counterpart in the direction of linear displacement is released. The release state can thus refer to a state in which, for example, the locking piece is still arranged in the locking counterpart, but is movable out of this. Or the release state may refer to a state in which the locking piece and the locking counterpart are spaced from each other.

The body may in particular comprise a rinsing container. The at least one link arm can be articulated on the washing container, in particular on a fitting thereof.

The loading level can generally be a storage or receptacle, in particular for crockery and / or cutlery. The loading level is preferably a crockery basket or a cutlery drawer. Particularly preferably, the at least one loading level is formed as a lower dish rack.

According to one embodiment, the locking piece and the locking counterpart are adapted to be rotatable by means of linear displacement of the at least one loading plane along the at least one guide rail.

In particular, the displacement of the at least one loading level takes place in the extension direction, wherein an end position of the loading level in the extension direction corresponds to a state in which the locking piece and the locking counterpart are arranged rotatable into each other. In particular, a stop of the locking piece on the locking counterpart define the end position in the extension direction.

According to a further embodiment, the release state corresponds to a non-pivoted, lower position of the at least one loading plane and the blocking state of an at least partially pivoted out of the lower position, the upper position of the at least one loading level.

It is preferably provided that the pivoting and linear displacement never take place at the same time, but only in succession. For example, the at least one loading plane is first moved out of the body at least partially linearly, in particular pulled out. From this at least partially herausverlagerten, lower position, the at least one loading level is pivoted into its upper, also at least partially herausverlagerten position. This is followed by a back pivoting of the loading level from their at least partially herausverlagerter, upper position in their at least partially herausverlagerte, lower position follows. From the at least partially herausverlagerten, lower position, the at least one loading level is linearly moved back into the body, in particular pushed back. In particular, the three following positions thus result for the at least one loading level: a lower position pushed into the carcass, a lower position, at least partially pulled out of the carcass, and an upwardly pivoted, at least partially pulled out position. Preferably, only the gravitational force between the lower, retracted and lower, extended positions can cause no pivoting of the loading plane simultaneously with the linear displacement of the same during the extraction (and the pushing back with a displacement in the reverse direction). Preferably, the locking piece and the locking counterpart ensure only when pivoting between the lower, at least partially extended position and the upwardly pivoted, at least partially extended position, that there is no linear displacement, in particular rearrangement, the at least one loading level in the body comes into it.

According to a further embodiment, the locking counterpart is adapted to engage behind the blocking piece by turning the locking counterpart about the axis of rotation counter to an extension direction in which the at least one loading level is displaceable out of the body for the blocking state. Accordingly, in the locked state, the locking piece abuts against the locking counterpart in a direction opposite to the extension direction, so that a backward movement of the at least one loading plane into the body is prevented. In particular, the at least one loading level is thus at least partially secured in its end position outside the body.

According to one embodiment, the locking piece or counterpart counterpart has a C-shaped element with a radial opening. In this embodiment, the other of the locking piece or locking counterpart can have a pin-shaped element which can be introduced radially into the C-shaped element by means of the radial opening.

By linear displacement, the peg-shaped element passes through the radial opening in the space enclosed by the C-shaped element. By relative rotation of the locking piece and the locking counterpart, the C-shaped element engages behind the pin-shaped element against the extension direction, so that a movement of the pin-shaped element against the extension direction is then locked.

According to a further embodiment, the peg-shaped element is formed with at least one insertion bevel for insertion thereof into the radial opening of the C-shaped element.

As a result, the peg-shaped element passes safely into the C-shaped element, even if the opening of the C-shaped element is not exactly opposite to the extension direction, but deviates from it, for example, by several degrees.

According to a further embodiment, the peg-shaped element is rounded on one side and formed flattened on its other side.

By rounding two opposite chamfers are created in a simple manner, which bring the advantages already mentioned with it. The flattened side is well suited to serve as a stop on the C-shaped element in the locked state.

According to a further embodiment, the C-shaped element is arranged on the at least one link arm.

Accordingly, the C-shaped member rotates about the axis of rotation when the link arm is pivoted about the pivot axis on the guide rail.

According to a further embodiment, the peg-shaped element is arranged on the at least one loading plane.

Accordingly, the C-shaped element rotates upon pivoting of the at least one loading plane about the peg-shaped element.

According to a further embodiment, the at least one loading plane has at least one further guide rail or rollers, by means of which it is linearly displaceable along the guide rail.

A running rail can form a telescopic rail together with the guide rail and the further guide rail. Furthermore, the running rail can be supported on the guide rails via balls or other roller bearings. Or else the rollers can roll directly on the guide rail, wherein the rollers are rotatably mounted on a basket portion of the loading plane.

According to a further embodiment, the locking piece or the locking counterpart is arranged on the running rail or on a basket portion of the at least one loading level.

Thereby, the locking piece or the counterpart counterpart can be easily provided at the loading level. In particular, the locking piece or the locking counterpart can be formed integrally or in one piece with the running rail or the basket portion.

According to a further embodiment, the at least one guide rail has a horizontal guide section for guiding the at least one loading plane and at least one upwardly directed tab on which the at least one link arm is articulated.

According to a further embodiment, the at least one link arm is a parallel link of a parallel link arrangement, which supports the at least one guide rail in a horizontal position pivotably on the body.

The at least one loading level is therefore always oriented horizontally, in particular in the upper and lower position, that is, its main extension plane is aligned horizontally. This prevents falling out of particular crockery or cutlery when pivoting the at least one loading level. The parallel-link arrangement may in particular comprise two or more parallel links.

"Horizontal" here also includes deviations of less +/- 20 degrees, preferably less +/- 10 degrees and more preferably less +/- 5 degrees. Also, "vertical" herein includes deviations of less than +/- 20 degrees, preferably less +/- 10 degrees, and more preferably less than +/- 5 degrees.

Further possible implementations of the invention also include not explicitly mentioned combinations of features or embodiments described above or below with regard to the exemplary embodiments. The skilled person will also add individual aspects as improvements or additions to the respective basic form of the invention.

Further advantageous embodiments and aspects of the invention are the subject of the dependent claims and the embodiments of the invention described below. Furthermore, the invention will be explained in more detail by means of preferred embodiments with reference to the attached figures.

1 shows a schematic perspective view of an embodiment of a dishwasher;

2 shows a partial view II 1 wherein a lower dish rack is shown in a first position;

3 shows the view 2 with the lower dish rack in a second position;

4 shows the view 2 with the crockery basket in a third position;

5 shows the view 2 with the dish rack in a fourth position;

6 shows a section VI-VI 2 ; and

7 to 9 show a locking piece and a counterpart counter of the dishwasher in different states.

In the figures, the same or functionally identical elements have been given the same reference numerals, unless stated otherwise.

1 shows a schematic perspective view of a dishwasher 1 , The dishwasher 1 has a rinse tank 2 comprehensive body on, passing through a door 3 is watertight closable.

The washing container 2 and the door 3 form a rinsing chamber 4 for rinsing dishes. The door is in 1 shown in their open position. By pivoting one at a lower end of the door 3 provided pivot axis, the door can be closed or opened.

The washing container 2 For example, is cuboid and includes a floor 5 one to the ground 5 opposite ceiling 6 , one of the door 3 opposite back wall 7 and two opposing side walls 8th . 9 , The washing container can be made of stainless steel, plastic or a combination of stainless steel plastic.

The dishwasher 1 furthermore has at least one loading level 10 on. The loading level 10 is preferably a Spülgutaufnahme the dishwasher 1 , In particular, multiple loading levels 10 be provided, in each case one of the multiple loading levels 10 a lower crockery basket (lower basket), an upper crockery basket (upper basket) or a cutlery drawer of the dishwasher 1 can be. The multiple loading levels 10 are preferably one above the other in the washing compartment 2 arranged. Each loading level 10 is either in an insertion direction E (arrow) in the washing or in an extension direction A (arrow) out of this displaced. This is preferred on both sides of a respective loading level 10 a leadership facility 11 intended.

2 shows a view II 1 where the side wall 9 not shown, so take a look at the sidewall 8th as well as the rinsing chamber lying in front of it 4 is released. Remote is in 2 a loading level 10 shown in the form of a lower dish rack. The lower crockery basket 10 is opposite a guide rail 12 already related to 1 said guide device 11 linearly displaceable.

To an operator person loading and unloading the lower dish rack 10 to facilitate, this is by means of a parallelogram linkage arrangement 13 from the rinsing chamber 4 provided pivotable upwards, as in the 2 to 5 shown. 2 shows a first position of the lower dish rack 10 , in which this in the insertion direction E (arrow) in the rinsing chamber 4 is inserted and close or in abutment against the back wall 7 is arranged. Further, the lower crockery basket 10 in the first position in a lower region of the rinsing chamber 4 near the ground 5 arranged.

3 in contrast, shows a second position of the lower dish rack 10 , in which this in the extension direction A (arrow) linearly partially from the rinsing chamber 4 is relocated out. This movement corresponds to an exclusively horizontal displacement of the lower dish rack 10 , To the in 3 shown second position now includes a in 4 shown third position. In the third position, which corresponds to an intermediate position, is the lower dish rack 10 partially pivoted upwards and is thus arranged vertically above the first and second positions. The lower crockery basket 10 can still only partially, as shown, outside the washing chamber 4 be arranged. Will the lower crockery basket 10 now even further pivoted upward, he gets into a 5 shown fourth position. In the fourth position is the lower dish rack 10 arrived in its highest position and can be completely outside the rinsing chamber 4 are located.

Now returning to 2 is there shown that the Parallelogrammlenkeranordnung 13 for example, two handlebar arms 14 . 15 includes. The handlebar arms 14 . 15 are each - but below for the sake of simplicity only for the arm 14 explained in more detail - on the side wall 8th at one end in a point of articulation 16 hinged. At the other end are the handlebar arms 14 . 15 on the guide rail 12 in a pivot point 17 hinged.

To move the lower basket from the second position on the third position to the fourth position, the handlebar arms 14 . 15 for example, as shown, 90 degrees are pivoted. However, a corresponding maximum swivel angle may also be less, for example only at least 80 degrees, 70 degrees or 60 degrees. In the first position, the handlebar arms 14 . 15 , as in 2 shown to be vertically aligned. This position take the handlebar arms 14 . 15 due to the effect of gravity. Spending the lower crockery basket 10 in the extension direction A (arrow) (and in the feed direction E (arrow)) and the pivoting of the lower dish rack 10 in the third and fourth position is done according to the embodiment by applying a manual force, but also a (partial) automation could be provided by means of an electric motor or the like.

The articulation of the handlebar arms 14 . 15 on the guide rail 12 as well as further details of the dishwasher 1 are described below on the basis of 6 explained in more detail, which is a section VI-VI 2 shows. The guide rail 12 includes a guide section 18 and two tabs 19 (the second tab is in 2 to recognize). The guide section 18 extends always, so in all four positions (see 2 to 5 ) horizontally. From the guide section 18 the tabs protrude 19 upwards. The handlebar arm 14 is at the point of articulation 17 by means of a pin 20 , which in a corresponding opening 21 in the flap 19 engages around a pivot axis 22 pivoted.

Next to the guide rail 12 includes the guide device 11 another guide rail 23 and a running track 24 , The guide rail 23 is part of the lower crockery basket 10 and at a basket section 25 the same firmly attached. The track 24 relies on both sides of balls not shown on the guide rails 12 . 23 from, whereby a telescopic rail is formed. Accordingly, the guide rail 23 opposite the guide rail 12 exclusively linearly displaceable, which can be achieved by removing or inserting the lower dish rack 10 he follows.

The lower crockery basket 10 further comprises a locking piece 26 which, for example, on the basket section 25 is provided rotatably. The locking piece 26 has a pin-shaped element 28 on.

On the handlebar arm 14 is a corresponding locking counterpart 27 firmly attached. The locking counterpart 27 has according to the embodiment, a C-shaped element 29 (see also 7 ) on. The locking counterpart 27 can, for example, via pins not shown in detail with the handlebar 14 rotatably connected. A respective pin passes through a curved slot (not shown) in the tab 19 so that the required mobility or pivotability between the tab 19 and the handlebar arm 14 given is.

The interaction of the locking piece 26 with the locking counterpart 27 is described below on the basis of 7 to 9 explained in more detail.

7 illustrates that the C-shaped element 29 one - in relation to a rotation axis 30 radial - opening 34 having. As in further 7 shown comprises the peg-shaped element 28 a rounded page 31 and a flattened page 32 , This results in the rounded side 31 opposite chamfers 33 Inserting in the opening 34 facilitate. In 7 are the C-shaped element 29 and the peg-shaped element 28 shown spaced apart, which corresponds to a release state thereof and, for example, in the first position, as in 2 shown, the case is. Thus, the pin-shaped element 28 linear, ie in the extension direction A (arrow) or the insertion direction E (arrow), move freely.

Will the lower crockery basket 10 now undressed and from his first position (see 2 ) in its second position (see 3 ), so the pin-shaped element 28 through the radial opening 34 in one of the C-shaped element 29 enclosed interior 35 moves, as in 8th and 9 shown. In particular, while the peg-shaped element 35 on its rounded side 31 on an inside 36 of the C-shaped element 29 strike, creating an end position of the lower crockery basket 10 in the extension direction A (arrow) and thus the second position (see 3 ) is defined. After this, further pulling of the operator leads to the lower rack 10 in the extension direction A (arrow) to pivot the handlebar arms 14 . 15 , Until then, between the first and second position of the lower dish rack 10 , only gravity ensures that the handlebar arms 14 . 15 remain in their vertical orientation.

The pivoting of the handlebar arm 14 now causes the C-shaped element 29 around the axis of rotation 30 and thus around the peg-shaped element 28 rotates. The rotation axis 30 is the same axis with the pivot axis 22 so that the pivoting of the swivel arm 14 also directly to a twisting of the C-shaped element 29 around the peg-shaped element 28 leads.

Due to the rotation, the C-shaped element engages behind 29 the peg-shaped element 28 in the insertion direction E (arrow), that is one end 37 of the C-shaped element 29 pushes behind the flattened side 32 of the peg-shaped element 28 , This is a linear displacement of the peg-shaped element 28 with respect to the C-shaped element 29 locked both in the insertion direction E (arrow) and in the extension direction A (arrow). The corresponding blocking state of the peg-shaped element 28 and the C-shaped element 29 is in 9 shown. This corresponds to the third position (see 4 ) or fourth position (see 5 ). Consequently, a simultaneous shifting or moving the lower dish rack 10 prevented during a pivoting between the second, third and fourth position. In particular, such an undesirable displacement of the lower dish rack 10 in the insertion direction E (arrow) avoided during pivoting.

Preferably, on the side wall 9 of the body 2 an arrangement provided in mirror image to that described above, the sliding pivotal movement of the lower dish rack 10 also to lead to its opposite side.

Although the present invention has been described with reference to embodiments, it is variously modifiable. Thus, for example, it can also be realized in another type of household appliance, in particular in an oven or the like.

LIST OF REFERENCE NUMBERS

1

 Dishwasher, household dishwasher

2

 body; rinse tank

3

 door

4

 rinsing chamber

5

 ground

6

 blanket

7

 rear wall

8th

 Side wall

9

 Side wall

10

 Load level; lower crockery basket

11

 guide means

12

 guide rail

13

 parallelogram

14

 control arm

15

 control arm

16

 articulation

17

 articulation

18

 guide section

19

 flap

20

 spigot

21

 opening

22

 swivel axis

23

 guide rail

24

 runner

25

 basket section

26

 locking piece

27

 Lock counterpart

28

 Pin-shaped element

29

 C-shaped element

30

 axis of rotation

31

 Rounded page

32

 Flattened page

33

 chamfer

34

 opening

35

 inner space

36

 inside

37

 The End

A

 Extension direction (arrow)

e

 Insertion direction (arrow)

II

 view

VI-VI

 cut

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 102012107993 A1 [0003]

Claims (14)

Dishwasher ( 1 ), in particular a household dishwasher, having a body ( 2 ), at least one loading level ( 10 ), at least one guide rail ( 12 ), along which the at least one loading level ( 10 ) is linearly displaceable, at least one link arm ( 14 ), which the at least one guide rail ( 12 ) pivotable on the body ( 2 ), wherein the handlebar arm ( 14 ) on the guide rail ( 12 ) about a pivot axis ( 22 ) is hinged pivotally, one at the at least one loading level ( 10 ) arranged locking piece ( 26 ) and one on the handlebar arm ( 14 ) arranged locking counterpart ( 27 ), wherein the locking piece ( 26 ) and the counterpart counterpart ( 27 ) in a release state of the same a linear displacement of the at least one loading level ( 10 ) along the at least one guide rail ( 12 ) and in a blocking state of the same a linear displacement of the at least one loading level ( 10 ) along the at least one guide rail ( 12 ), whereby the locking piece ( 26 ) or the counterpart counterpart ( 27 ) for adjusting it between the blocking state and the release state about a rotation axis ( 30 ) in the other of the locking piece ( 26 ) or the counterpart counterpart ( 27 ) is rotatable, wherein the axis of rotation ( 30 ) with the pivot axis ( 22 ) of the at least one link arm ( 14 ) is the same. Dishwasher ( 1 ) according to claim 1, characterized in that the locking piece ( 26 ) and the counterpart counterpart ( 27 ) are arranged, by means of linear displacement of the at least one loading level ( 10 ) along the at least one guide rail ( 12 ) to be arranged rotatably in each other. Dishwasher ( 1 ) according to claim 1 or 2, characterized in that the release state of an untwisted, lower position of the at least one loading level ( 10 ) and the blocking state of an at least partially pivoted out of the lower position, the upper position of the at least one loading level ( 10 ) corresponds. Dishwasher ( 1 ) according to one of claims 1 to 3, characterized in that the blocking counterpart ( 27 ) is set up for the lock state, the locking piece ( 26 ) by turning the locking counterpart ( 27 ) about the axis of rotation ( 30 ) against a pull-out direction (A), in which the at least one loading level (A) 10 ) from the body ( 2 ) is out of reach to reach behind. Dishwasher ( 1 ) according to one of claims 1 to 4, characterized in that the locking piece ( 26 ) or the counterpart counterpart ( 27 ) a C-shaped element ( 29 ) with a radial opening ( 34 ) and the other of the locking piece ( 26 ) or the lock object ( 27 ) by means of the radial opening ( 34 ) in the C-shaped element ( 29 ) radially insertable, pin-shaped element ( 28 ) having. Dishwasher ( 1 ) according to claim 5, characterized in that the peg-shaped element ( 28 ) with at least one insertion bevel ( 33 ) for insertion into the radial opening ( 34 ) of the C-shaped element ( 29 ) is formed. Dishwasher ( 1 ) according to claim 6, characterized in that the peg-shaped element ( 28 ) on its one side ( 31 ) and on its other side ( 32 ) is formed flattened. Dishwasher ( 1 ) according to one of claims 5 to 7, characterized in that the C-shaped element ( 29 ) on the at least one link arm ( 14 ) is arranged. Dishwasher ( 1 ) according to one of claims 5 to 8, characterized in that the peg-shaped element ( 28 ) at the at least one loading level ( 10 ) is arranged. Dishwasher ( 1 ) according to one of claims 1 to 9, characterized in that the at least one loading level ( 10 ) at least one further guide rail ( 23 ) or rollers, by means of which they along the at least one guide rail ( 18 ) is linearly displaceable. Dishwasher ( 1 ) according to one of claims 1 to 10, characterized in that the locking piece ( 26 ) or the counterpart counterpart ( 27 ) on the at least one further guide rail ( 23 ) or on a basket section ( 25 ) of the at least one loading level ( 10 ) is arranged. Dishwasher ( 1 ) according to one of claims 1 to 11, characterized in that the at least one guide rail ( 12 ) a horizontal guide section ( 18 ) for guiding the at least one loading level ( 10 ) and at least one upwardly directed tab ( 19 ), on which the at least one link arm ( 14 ) is articulated. Dishwasher ( 1 ) according to one of claims 1 to 12, characterized in that the at least one link arm ( 14 ) a parallel link on a parallel link arrangement ( 13 ), which the at least one guide rail ( 12 ) in a horizontal position pivotable on the body ( 2 ) stores. Dishwasher ( 1 ) according to one of claims 1 to 13, characterized in that the at least one loading level ( 10 ) is a lower crockery basket.

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