DE102015207568B4 - Fastening device for fastening a household appliance to a wall and household appliance - Google Patents

Abstract

Fastening device (16) for fastening a household appliance (1), in particular a household dishwasher, to a wall (3, 4), with a first fastening element (17) provided on the household appliance (1), a second fastening element (20), which is received in a receiving section (18) of the first fastening element (17), the second fastening element (20) having a first spacing section (22), a second spacing section (23) and an elastically deformable deformation section (24) which is between the first Spacing section (22) and the second spacing section (23) is arranged, and a third fastening element (26), which is designed to fasten the second fastening element (20) to the wall (3, 4), wherein the deformation section (24) of the second fastening element (20) when fastening the same to the wall (3, 4) in a longitudinal direction (L) of the second fastening element (20) with the aid of the third Fastening element (26) is compressible, so that the deformation section (24) bulges radially over an outer circumference (u) of the first spacing section (22) and the second spacing section (23) around the second fastening element (20) in a positive and / or non-positive manner in the receiving section (18), and wherein the deformation section (24) and the spacing sections (22, 23) are made of different materials.

Description

The present invention relates to a fastening device for fastening a household appliance, in particular a household dishwasher, to a wall and a household appliance with such a fastening device.

A fastening device can be used to fasten a household appliance, in particular a so-called integrable household appliance or built-in household appliance, to a built-in niche, which can be provided, for example, in a kitchen base cabinet.

The publication DE 10 2011 004 315 A1 discloses a device for installing a dishwasher having a washing compartment with an upper container wall, two side container walls and a loading opening in an installation niche of a piece of furniture which is delimited by furniture walls. The device comprises a mounting element which is attached directly or indirectly to the front edge of the container walls and which borders the loading opening, a spacer element and a screw with a screw head, a screw shaft and a thread which is present at least at the shaft end. The screw is movably held by the spacer element in a transverse direction extending transversely to the container wall, with the screw head acting on it in the assembled state and pressing it against the furniture wall. Furthermore, the spacer element is held movably on the mounting element in the transverse direction mentioned and has at its end facing the screw head a fixing area which, in the assembled state due to the action of the spacer element by the screw head on the mounting part, via a cross-sectional shape and / or Adhesion is connected.

The publication EP 2 481 335 A2 discloses such a fastening device for a built-in household appliance. The fastening device comprises a length-adjustable two-part spacer sleeve with a first sleeve part and a second sleeve part. The first sleeve part is mounted on the built-in household appliance. The second sleeve part is telescopically adjustable in defined lengths in relation to the first sleeve part.

Furthermore, an anti-rotation device is provided which limits a rotational movement of the second sleeve part.

Against this background, it is an object of the present invention to provide an improved fastening device for fastening a household appliance to a wall.

Accordingly, a fastening device for fastening a household appliance, in particular a household dishwasher, to a wall is proposed. The fastening device comprises a first fastening element which is provided on the household appliance, a second fastening element which is received in a receiving section of the first fastening element, the second fastening element having a first spacing section, a second spacing section and an elastically deformable deformation section which lies between the first Spacer portion and the second spacer portion is arranged, and a third fastening element, which is adapted to fasten the second fastening element to the wall, wherein the deformation portion of the second fastening element when fastening it to the wall in a longitudinal direction of the second fastening element by means of the third fastening element is compressible, so that the deformation section bulges radially over an outer circumference of the first spacing section and the second spacing section around the second fastening element positively and / or non-positively in the receiving portion, and wherein the deformation portion and the spacer portions are made of different materials.

The second fastening element can in particular be moved from an uncompressed state to a compressed state and vice versa. When moving from the uncompressed state to the compressed state, a length of the first fastening element is reduced. At the same time, the deformation section bulges radially outward in the direction of an inner wall of the receiving section. As a result, the second fastening element and the third fastening element are clamped in the receiving section. The second fastening element is preferably displaceable in the longitudinal direction in the receiving section before the second fastening element is compressed. In particular, in the compressed state of the first fastening element, the deformation section lies against the receiving section with a cylindrical surface. A sufficient force can hereby be transmitted from the second fastening element to the first fastening element. However, the contact surface does not have to be cylindrical. The first fastening element can be a frame or part of a frame of the household appliance. The frame can be set up to stiffen and / or stabilize a receiving area, in particular a rinsing container, of the household appliance. The first fastening element can be, for example, a force transducer provided on the frame. The frame can be referred to as a fastening and / or stiffening frame.

The fastening device is in particular set up to fasten different platforms of the household appliance to the wall. This enables the fastening device to be used universally. The fact that the third fastening element is not in direct contact with the first fastening element prevents the first fastening element from being loaded with a force which could deform it. This can prevent deformation of the first fastening element. The first fastening element can for example be made of a steel material or a plastic material. The receiving section is preferably provided as an opening or bore in the first fastening element. This makes it possible to dispense with a complex geometry on the first fastening element. The first fastening element can thus be manufactured inexpensively. The receiving section preferably has a simple contour, as a result of which the first fastening element can be used universally. In comparison to known approaches, the contour of the receiving section is significantly simplified. The fastening device is particularly continuously adjustable.

The fastening device is preferably set up to simultaneously fasten the household appliance to mutually opposite walls of an installation niche. The fastening device can also be designed to fasten the household appliance to a wall arranged above the household appliance. In the present case, a wall can be understood to mean a surface arranged laterally next to, above, below or behind the household appliance, on which or to which the household appliance can be attached. The wall can be part of a building or furniture like a kitchen base cabinet. Compared to known approaches, the fastening device has no fixed width gradation, so that the fastening device can be infinitely adjusted with a varying niche width of the installation niche. Furthermore, larger niche widths can be covered with the aid of the fastening device in comparison to known approaches. When compressing the second fastening element with the aid of the third fastening element, the torque for screwing in the third fastening element suddenly increases as soon as the deformation section rests on the inside against the receiving section. This gives a fitter clear feedback as to when the household appliance is attached to the wall. This prevents overtightening of the third fastening element.

The spacer sections are preferably made of a non-compressible material.

According to one embodiment, the second fastening element is tubular.

The second fastening element preferably has a centrally provided bore or a central opening. The spacer sections and the deformation section are also tubular. The tubular geometry can have an annular, square, polygonal, oval, star-shaped or any other cross section. In particular, the second fastening element is rotationally symmetrical to a central axis thereof.

According to a further embodiment, the third fastening element is passed through the second fastening element.

In particular, the third fastening element is received in the central bore of the second fastening element. A diameter of a shaft section of the third fastening element is preferably slightly smaller than a diameter of the bore. This limits expansion of the deformation section into the bore. In particular, the third fastening means is clamped in the bore when compressing the second fastening means with the aid of the deformation section.

According to a further embodiment, the deformation section is permanently connected to the first spacing section and the second spacing section.

The deformation section and the spacing sections are preferably made in one piece. Alternatively, the deformation section and the spacing sections can be formed as individual parts that can be plugged onto the third fastening element. That is, the deformation section and the spacing sections can be releasably connected to one another. For example, the spacer sections can be designed as metal sleeves, between which the elastically, in particular resiliently, deformable deformation section can be inserted.

According to a further embodiment, the deformation section is made from an elastomer, in particular from rubber or an elastic polyurethane material.

In particular, the deformation section can be vulcanized onto the spacer sections. For example, the deformation section can be made from a thermoplastically processable polyurethane material.

According to a further embodiment, the first spacing section and / or the second Spacer section made from a plastic material, in particular from a thermoplastic material, or from a metal material.

For example, the spacing sections can be designed as steel sleeves, between which the deformation section is arranged. The spacer sections can be glued to the deformation section. The spacer sections can alternatively be made, for example, of acrylonitrile-butadiene-styrene (ABS) or polyethylene (PE).

According to a further embodiment, the second fastening element is a multi-component injection-molded component, in particular the deformation section, the first spacing section and / or the second spacing section being molded onto one another.

In particular, the second fastening element can be a two-component or three-component injection molded component. As a result, the second fastening element can be produced inexpensively in large numbers. The first spacing section and the second spacing section can be connected to one another with the aid of at least one web. This can simplify the production of the second fastening element. In particular, a plurality of webs arranged circumferentially can be provided. With the help of the webs, the deformation properties of the deformation section can also be influenced.

According to a further embodiment, the deformation section is arranged centrally between the first spacing section and the second spacing section.

In particular, the second fastening element is designed in accordance with Poka Yoke. As a result, the second fastening element can be installed in any installation position or position. Errors in the assembly of the second fastening element can thereby be excluded.

According to a further embodiment, the deformation section is arranged eccentrically between the first spacing section and the second spacing section, the second fastening element comprising a positioning aid which is set up to position the second fastening element in only a predetermined installation position, in which the deformation section is arranged completely within the receiving section to position in the receiving section.

Due to the off-center positioning of the deformation section, a larger niche width of the installation niche can be covered. The positioning aid can comprise a film skin provided on an end section of one of the spacing sections, which closes the central bore of the second fastening element completely or except for a small opening. The film skin can be made of a plastic material or sheet steel. The film skin prevents the third fastening element from being inserted into the second fastening element from the side on which the film skin is provided. A user is thus shown in which installation position the second fastening element is to be positioned in the receiving section. The user positions the second fastening element with the aid of the positioning device in such a way that the deformation section is arranged completely in the receiving section. A tip of the third fastening element can be passed through the opening provided in the film skin. The film skin is destroyed when the third fastening element is screwed into the wall. The film skin is preferably provided on the spacing section which has a greater linear expansion.

According to a further embodiment, a diameter of the receiving section is larger than a diameter of the second fastening element before it is fastened to the wall.

As a result, the second fastening element can be easily and quickly installed on the first fastening element. Furthermore, the diameters of the first fastening element and the receiving section can be tolerated generously, since a diameter compensation is easily possible with the aid of the deformation section. As a result, the fastening device can be manufactured inexpensively.

According to a further embodiment, the third fastening element is a screw with a threaded section and a screw head.

Furthermore, the third fastening element can have a shaft section arranged between the threaded section and the screw head. The shaft section is preferably arranged in the region of the deformation section, so that it cannot deform in the direction of the central axis of the second fastening element, but is only deformed radially outward. The design of the screw head is preferably freely selectable. This means that the screw head can include any driving profile. The screw can be, for example, a countersunk screw or a pan head screw. The first spacing section and / or the second spacing section can each have a receiving region for receiving the screw head on an end face facing away from the deformation section. There is preferably one on each of the two end faces Recording area provided. As a result, the second fastening element can be installed in any installation position.

According to a further embodiment, the second fastening element comprises a stop section, which is set up to limit the compression of the deformation section.

The second fastening element is preferably assembled from at least two individual parts. For example, the deformation section can be provided on the first spacing section. The second spacing section can be inserted into the first spacing section and the deformation section. For this purpose, the second spacing section can have a tubular plug-in section which can be plugged into the first spacing section and the deformation section. The plug-in section also prevents the deformation section from deforming into the central bore of the second fastening element. The deformation of the deformation section takes place only radially outwards. The first spacing section and the second spacing section can in particular be displaced towards one another. The displaceability is limited by the stop section.

Furthermore, a household appliance, in particular a domestic dishwasher, is proposed with such a fastening device, a first fastening element of the fastening device being fastened to a receiving area, in particular a washing container, of the household appliance.

The household appliance is preferably a household dishwasher. The household appliance can also be referred to as an integrable household appliance or built-in household appliance. The first fastening element can be clipped, screwed, welded and / or riveted to the receiving area. The receiving area can be made entirely or partially of a steel material. The first fastening element is preferably in one piece.

According to one embodiment, the first fastening element is provided on the front or door side on the receiving area, in particular the washing container.

In particular, the first fastening element can be arranged on the front side on the receiving area. The receiving area can have openings which are positioned such that the receiving section provided in the first fastening element is accessible from the inside of the receiving area. The first fastening element preferably has two receiving sections which are arranged opposite one another. The first fastening element can also have receiving sections which are directed upward with respect to the receiving area.

Further possible implementations of the fastening device and / or the household appliance also include combinations of features or embodiments described above or below with reference to the exemplary embodiments that are not explicitly mentioned. The person skilled in the art will also add individual aspects as improvements or additions to the respective basic shape of the fastening device and / or the household appliance.

Further advantageous refinements and aspects of the fastening device and / or the household appliance are the subject of the dependent claims and the exemplary embodiments of the fastening device and / or the household appliance described below. Furthermore, the fastening device and / or the household appliance are explained in more detail using preferred embodiments with reference to the attached figures.

• 1 eine schematische perspektivische Ansicht einer Ausführungsform eines Haushaltsgeräts;
• 2 eine schematische perspektivische Ansicht einer Ausführungsform eines Aufnahmebereichs für das Haushaltsgerät gemäß 1;
• 3 eine schematische perspektivische Ansicht einer weiteren Ausführungsform eines Aufnahmebereichs für das Haushaltsgerät gemäß 1;
• 4 eine schematische Schnittansicht einer Ausführungsform einer Befestigungsvorrichtung für das Haushaltsgerät gemäß 1;
• 5 eine weitere schematische Schnittansicht der Befestigungsvorrichtung gemäß 4;
• 6 eine schematische Schnittansicht einer Ausführungsform eines Befestigungselements für die Befestigungsvorrichtung gemäß 4;
• 7 eine weitere schematische Schnittansicht des Befestigungselements gemäß 6;
• 8 eine schematische Vorderansicht des Befestigungselements gemäß 6;
• 9 eine schematische Schnittansicht einer weiteren Ausführungsform eines Befestigungselements für die Befestigungsvorrichtung gemäß 4;
• 10 eine schematische Schnittansicht einer weiteren Ausführungsform eines Befestigungselements für die Befestigungsvorrichtung gemäß 4; und
• 11 eine weitere schematische Schnittansicht des Befestigungselements gemäß 10.

Show it

• 1 is a schematic perspective view of an embodiment of a household appliance;
• 2 is a schematic perspective view of an embodiment of a receiving area for the household appliance 1 ;
• 3 a schematic perspective view of a further embodiment of a receiving area for the household appliance according to 1 ;
• 4 is a schematic sectional view of an embodiment of a fastening device for the household appliance 1 ;
• 5 a further schematic sectional view of the fastening device according to 4 ;
• 6 is a schematic sectional view of an embodiment of a fastener for the fastening device according to 4 ;
• 7 a further schematic sectional view of the fastener according to 6 ;
• 8th is a schematic front view of the fastener according to 6 ;
• 9 is a schematic sectional view of a further embodiment of a fastening element for the fastening device according to 4 ;
• 10 is a schematic sectional view of a further embodiment of a fastening element for the fastening device according to 4 ; and
• 11 a further schematic sectional view of the fastener according to 10 ,

In the figures, elements that are the same or have the same function have been given the same reference numerals, unless stated otherwise.

The 1 shows a schematic perspective view of a household appliance 1 , The home appliance 1 can be a water-bearing household appliance such as a household dishwasher or a washing machine. Alternatively, the household appliance 1 for example, a refrigerator, a freezer, a dryer, a stove, a microwave oven or the like. The 1 shows a dishwasher, in particular a household dishwasher.

The home appliance 1 is in particular an integrable household appliance 1 , In the present case, “integrable” is understood to mean that the household appliance 1 in an installation niche 2 can be integrated or assembled. The built-in niche 2 can be provided for example in a kitchen base cabinet. The built-in niche 2 can also be part of a building. The built-in niche 2 has two walls arranged opposite each other 3 . 4 , in particular side walls, and a rear wall 5 on. The built-in niche 2 can also be one over the home appliance 1 arranged wall, in particular a ceiling. The walls 3 . 4 are preferably made of wood, for example made of chipboard. The walls 3 . 4 are by a distance or a niche width b ₂ spaced from each other. The niche width b ₂ can be, for example, 608 mm or more. An installation width of the household appliance 1 can be, for example, 600 mm. The home appliance 1 is preferably on both walls 3 . 4 fixable.

The home appliance 1 can be a recording area 6 have the through a door 7 , in particular waterproof, is closable. You can do this between the door 7 and the recording area 6 a sealing device may be provided. The recording area 6 can a rinsing container in the 1 household dishwasher shown. The recording area 6 is preferably cuboid. In particular, the recording area 6 be made of sheet steel. The recording area 6 can in a housing of the household appliance 1 be arranged. The recording area 6 and the door 7 can use a rinsing chamber 8th for washing dishes.

The door 7 is in the 1 shown in their open position. By pivoting around one at a lower end of the door 7 intended pivot axis 9 can the door 7 be closed or opened. The recording area 6 has a bottom 10 , one the floor 10 opposite ceiling 11 , one of the door 7 opposite rear wall 12 and two side walls arranged opposite one another 13 . 14 on. The floor 10 , the blanket 11 , the back wall 12 and the side walls 13 . 14 can for example be made of a stainless steel sheet. Alternatively, for example, the floor 10 be made of a plastic material.

The home appliance 1 also has at least one washware receptacle 15 on. Preferably, several items can be washed 15 be provided, one of the plurality of washware receptacles 15 a lower basket, an upper basket or a cutlery drawer of the household appliance 1 is. The multiple wash items 15 are preferably one above the other in the receiving area 6 arranged. Every wash load 15 is optionally in the recording area 6 can be moved in or out of it. In particular, every wash load is 15 in one direction e in the recording area 6 can be pushed in and against the direction of insertion e in a pull-out direction A from the recording area 6 pulled out.

The home appliance 1 further comprises a fastening device 16 for attaching the household appliance 1 on at least one of the walls 3 . 4 the built-in niche 2 , The fastening device 16 can be additionally or optionally set up to the household appliance 1 on one above the home appliance 1 arranged wall of the installation niche 2 to fix. The fastening device is preferably 16 set up the home appliance 1 on both walls simultaneously 3 . 4 to fix. The fastening device 16 has a particularly continuous first fastening element 17 on, the front or door side of the recording area 6 is provided. The first fastener 17 can be a frame or part of a frame of the household appliance 1 his. The first fastener 17 is on the two side walls 13 . 14 and the ceiling 11 intended. The first fastener 17 thus encircles the recording area 6 at least partially.

The 2 and the 3 each show a schematic perspective view of an embodiment of a receiving area 6 for the household appliance 1 , The reception areas 6 according to the 2 and the 3 can be called different platforms. The Embodiment of the recording area 6 according to the 2 can be used as an A platform (stainless steel container) and the embodiment of the receiving area 6 according to the 3 can be described as a B platform (container with stainless steel hood and plastic base).

The recording area 6 according to the 2 is preferably made entirely of sheet steel. The first fastener 17 is preferably also made of a steel material and with the side walls 13 . 14 and / or the ceiling 11 connected, for example clipped, screwed, welded and / or riveted. The first fastener 17 preferably has two on the side walls 13 . 14 positioned receiving sections 18 on. The receiving sections 18 can for example be designed as bores or as breakthroughs. On the side walls 13 . 14 Corresponding bores can also be provided, so that the receiving sections 18 from the rinsing chamber 8th are reachable from. In the area of the receiving sections 18 has the first fastener 17 each have a reinforcement or a force transducer, which can be made of a plastic material. The force transducer is in particular in a corner area of the first fastening element 17 , that is, in a transition between the side walls 13 . 14 and the ceiling 11 intended. In particular, the first fastening element 17 be the force transducer.

The recording area 6 according to the 3 differs from the recording area 6 according to the 2 in that the floor 10 is made of a plastic material. For example, the floor 10 be a plastic injection molded component. The floor 10 can be made of ABS, for example. The first fastener 17 is preferably also made of a plastic material. The first fastener 17 can also be made of ABS. The first fastener 17 may include stiffening ribs. In particular, the first fastening element 17 a plastic injection molded component.

The following is just on the wall 3 Referred. The 4 and the 5 each show a schematic sectional view of the wall 3 the built-in niche 2 and the fastening device 16 who the first fastener 17 includes that at the recording area 6 is provided. The first fastener 17 includes the receiving section 18 , The receiving section 18 is preferably one in the first fastener 17 intended breakthrough or hole. The receiving section 18 has a diameter d ₁₈ on. The diameter d ₁₈ can be, for example, 10 to 15 mm. The receiving section 18 can have a circular cross section or, for example, a polygonal cross section such as a pentagonal or hexagonal cross section. An inner wall 19 of the receiving section 18 can furthermore have a surface structure, for example an erosion structure, which has the surface roughness of the inner wall 19 elevated.

The fastening device 16 further includes a second fastener 20 , The second fastener 20 is in the receiving section 18 of the first fastener 17 added. With respect to a central axis 21 the same is the second fastener 20 rotationally symmetrical. Along one in the direction of the central axis 21 oriented longitudinal direction L is the second fastener 20 axially in the receiving section 18 displaceable.

The second fastener 20 has a first spacing section 22 and a second spacing section 23 on. Between the first distance section 22 and the second spacing section 23 is an elastically deformable deformation section 24 intended. As the 4 and the 5 continue to show is the second fastener 20 tubular. In particular, the spacing sections are also 22 . 23 and the deformation section 24 tubular.

The second fastener 20 points out how the 6 to 8th , show a central opening or a central hole 25 on. The central or central hole 25 extends through both the spacer sections 22 . 23 as well as through the deformation section 24 therethrough. The hole 25 has a diameter d ₂₅ on. As the 6 and the 7 show is the second fastener 20 by applying a force on both sides F by a difference in length .DELTA.l compressible. In one in 6 Uncompressed state shown has the second fastener 20 a length l ₂₀ on. The length l ₂₀ can be, for example, 20 to 50 mm. In the uncompressed state of the second fastening element 20 it has a diameter d ₂₀ on. The diameter d ₂₀ can be, for example, 10 mm. In particular, the diameter d ₂₀ smaller than the diameter d ₁₈ of the receiving section 18 of the first fastener 17 , The spacing sections 22 . 23 also have the diameter d ₂₀ on.

As the 6 and the 7 continue to show is the deformation section 24 between the first spacing section 22 and second spacing section 23 arranged in the middle. This is when installing the second fastener 20 in the receiving section 18 of the first fastener 17 the orientation or installation position of the second fastening element 20 any. This causes a so-called poka yoke effect. This can cause sources of error when installing the second fastening element 20 be eliminated. Alternatively, the deformation section 24 be provided off-center.

The deformation section is preferably 24 insoluble with the first spacing section 22 and the second spacing section 23 connected. That is, the second fastener 20 is preferably in one piece. Alternatively, the second fastening element 20 also be in several parts. In particular, the deformation section 24 releasably with the first spacing section 22 and / or the second spacing section 23 be connected. For example, the deformation section 24 with the first spacing section 22 and the second spacing section 23 be glued. Furthermore, the deformation section 24 to the spacing sections 22 . 23 vulcanized or molded.

The spacing sections 22 . 23 are preferably made of an elastically non-deformable and in particular non-compressible material. Preferably, the deformation section 24 and the spacer sections 22 . 23 made of different materials. For example, the deformation section 24 be made from an elastomer, in particular from a rubber material or an elastic polyurethane material. Preferably, the first spacing section 22 and the second spacing section 23 made of a plastic material, in particular a thermoplastic material or alternatively made of a metal material. For example, the spacing sections 22 . 23 be designed as metal sleeves to which the deformation section 24 is vulcanized. Furthermore, the second fastening element 20 be a two-component injection molded component, the deformation section 24 to the spacing sections 22 . 23 or vice versa. This makes the second fastening element particularly economical to manufacture 20 possible. For technical reasons, the execution of the second fastener 20 the first spacer section as a two-component injection-molded component 22 and the second spacing section 23 be connected to each other with the help of at least one web. With the help of the web, the deformation properties of the deformation section can also 24 can be set. A large number of webs can be provided circumferentially.

As the 7 further shows, the deformation portion 24 an outer diameter in its compressed state d ₂₄ on. The outside diameter d ₂₄ is in particular larger than the diameter d ₂₀ of the second fastener 20 , In particular, the outside diameter d ₂₄ at least as large as or larger than the inside diameter d ₁₈ of the receiving section 18 ,

Now returning to the 4 and the 5 these show that the fastening device 16 still a third fastener 26 having. The third fastener 26 is preferably a threaded screw, in particular a pan head screw, a countersunk screw or the like, with a threaded section 27 , a shaft section 28 and a screw head 29 , The screw head 29 has a diameter d ₂₉ on. The shaft section 28 has a diameter d ₂₈ on. The diameter d ₂₈ is slightly smaller than the diameter d ₂₅ the hole 25 , The design of the screw head 29 is freely selectable. That is, the screw head 29 can include any take-away profile. The entrainment profile can be, for example, a slot, a cross slot, an internal hexagon, a Torx geometry or the like. For example, when designing the driving profile as a hexagon socket when screwing in the third fastening element 26 into the wall 3 on the application of a large axial force in the longitudinal direction L to be dispensed with. This simplifies the assembly of the fastening device 16 ,

The third fastener 26 is through the second fastener 20 passed. In particular, the third fastener 26 at least partially in the hole 25 added. The third fastener 26 is set up the second fastener 20 on the wall 3 to fix. When screwing in the third fastener 26 into the wall 3 the built-in niche 2 becomes the second fastener 20 until contact with the wall 3 from the receiving section 18 of the first fastener 17 pulled out. This pull-out creates a continuous width adjustment between the household appliance 1 and the built-in niche 2 guaranteed.

When the third fastening element is screwed in further 26 into the wall 3 finds the previously described change in length of the second fastening element 20 instead of. This change in length causes the deformation section to expand radially 24 of the second fastener 20 , In particular, the deformation section 24 of the second fastener 20 when fixing it to the wall 3 in the longitudinal direction L with the help of the third fastener 26 compressed so that the deformation section 24 radially over an outer circumference u ₂₀ ( 8th ) of the second fastener 20 , in particular the first spacing section 22 and the second spacing section 23 , bulges out around the second fastener 20 positive and / or non-positive in the receiving section 18 set.

Due to the defined radial expansion only in the area of the deformation section 24 becomes ensured that the clamping of the second fastener 20 always in the receiving section 18 he follows. An expansion in an undesirable area is therefore excluded. By widening the deformation section 24 becomes the second fastener 20 together with the third fastener 26 in the receiving section 18 tense or jammed.

In particular, the deformation section deforms 24 when compressing the second fastener 20 also slightly radially inwards into the hole 25 into it so that the third fastener 26 is clamped. The diameter d ₂₉ of the screw head 29 is preferably smaller than the diameter d ₁₈ of the receiving section 18 of the first fastener 17 and smaller than the diameter d ₂₀ of the second fastener 20 , Because of the diameter d ₂₈ of the shaft section 28 is slightly smaller than the diameter d ₂₅ the hole 25 , the expansion of the deformation section takes place 24 essentially only in the direction of the inner wall 19 of the receiving section 18 instead of.

As the 6 and the 7 show, have the first spacing section 22 and / or the second spacing section 23 each at one of the deformation section 24 facing end 30 . 31 a recording area 32 . 33 for at least partially picking up the screw head 29 of the third fastener 26 on. The recording areas 32 . 33 can be designed as counterbores. In particular, the reception areas 32 . 33 set up the screw head 29 completely so that it does not go over the face 30 . 31 protrudes. The fact that on both ends 30 . 31 of the second fastener 20 such receiving areas 32 . 33 for the screw head 29 are provided, is the second fastener 20 Can be installed in any installation position or direction. This can result in errors when installing the second fastening element 20 be excluded.

The 9 shows a further embodiment of a second fastening element 20 , The second fastener 20 according to the 9 differs from the second fastener 20 according to the 6 to 8th essentially in that the deformation section 24 off-center between the spacing sections 22 . 23 is arranged. To ensure that a user the second fastener 20 in a correct installation position, in which the deformation section 24 completely in the receiving section 18 is recorded in the receiving section 18 positioned, includes the second fastener 20 a positioning aid 34 ,

The positioning aid 34 can for example on the front 31 of the second distance section 23 provided and the bore 25 either completely or except for a small breakthrough 35 occluding film skin. The film skin can be integral with the second spacing section 23 be trained. For example, the film skin can be made from a metal foil or from a plastic material. Through the breakthrough 35 can be a tip of the threaded section 27 of the third fastener 26 be passed through. When screwing in the third fastener 26 into the wall 3 the film skin is torn open. With the help of the positioning aid 34 So the user is shown whether he is the second fastener 20 in the correct installation position in the receiving section 18 positioned or not. The positioning aid 34 is preferably at the spacing section 22 . 23 provided that has the greater linear expansion. In the present case, this is the second spacing section 23 ,

The 10 and the 11 show a further embodiment of a second fastener 20 , The second fastener 20 according to the 10 and the 11 differs from the second fastener 20 according to the 6 to 8th essentially in that the second fastener 20 is in several parts. The 10 shows the second fastener 20 in an assembled state. The 11 shows the second fastener 20 in an unmounted condition.

The deformation section 24 can at the second spacing section 23 be provided. For example, the deformation section 24 and the second spacing section 23 be a two-component injection molded component. The first distance section 22 is one of the second spacing section 23 and the deformation section 24 separate component. The first distance section 22 has one from one of the front 31 facing end 36 protruding tubular plug-in section 37 on. The plug section 37 is in the deformation section 24 and the second spacing section 23 inserted. A diameter d ₃₇ of the plug section 37 is larger than the diameter d ₂₅ the hole 25 ,

In the second distance section 23 is one to the hole 25 coaxial bore 38 intended. A diameter d ₃₈ the hole 38 is slightly larger than the diameter d ₃₇ of the plug section 37 , The first distance section 22 is along the central axis 21 relative to the second spacing section 23 and the deformation section 24 displaced. A stop section 39 limits the displaceability of the spacing sections 22 . 23 relative to each other. In particular, the stop section 39 the difference in length .DELTA.l , The plug section 37 prevents the deformation section 24 when compressing the second fastener 20 in the hole 25 into warp.

In comparison to known approaches, the fastening device 16 also the advantages listed below. The second fastener 20 is functional in any installation position. This is achieved in that the deformation section 24 in the middle between the spacing sections 22 . 23 can be arranged and in that on each end face 30 . 31 of the second fastener 20 a recording area 32 . 33 for the screw head 29 of the third fastener 26 is provided. Incorrect assembly of the second fastener 20 is excluded.

Furthermore, even with a varying niche width b ₂ the built-in niche 2 always a constant torque on the third fastener 26 be achieved. This is achieved by the screw head 29 not at a fixed point on the first fastener 17 is arranged, but on the second fastening element 20 rests. This is the proportion of the threaded section 27 that in the wall 3 is screwed in, always the same length.

The fastening device 16 is universal for different platforms of the household appliance 1 used. The fastening device 16 prevents the first fastener 17 is subjected to a force that can lead to a change in size or shape of the same. This causes undesirable deformation of the first fastening element 17 prevented. This is achieved by the screw head 29 not directly on the first fastener 17 attacks.

The fastening device 16 is still infinitely adjustable. Compared to known approaches, it has no fixed length gradations. With varying niche width b ₂ changes the position of the second fastener 20 in the receiving section 18 continuously. With the help of the fastening device 16 can have larger niche widths compared to known solutions b ₂ be covered. Despite the Poka Yoke design, the maximum permissible niche width increases b ₂ , Off-center installation of the household appliance 1 in the installation niche 2 therefore has a low potential for errors.

When fastening the household appliance 1 with the help of the fastening device 16 there is a sudden increase in torque when screwing in the third fastening element 26 once the space for expansion of the deformation section 24 is limited. In this way, a user can be clearly shown when the household appliance 1 is attached. The danger of the third fastener 26 overwinding is reduced. The diameter d ₁₈ of the receiving section 18 can be tolerated very generously because of the deformation section 24 large differences in diameter can be bridged. This allows the fastening device 16 can be produced inexpensively. The elastically deformable deformation section 24 also has a dampening effect when opening and closing the door 7 ,

It also does not become an additional part for the support of the third fastening element 26 needed. Furthermore, a coefficient of friction between plastic and rubber is significantly better than between plastic and plastic. In contrast to known approaches, the second fastening element 20 a significantly larger cylindrical contact surface, which is used to transmit the frictional torque to the first fastening element 17 serves. In the receiving section 18 contours can be provided which provide a non-positive and / or positive connection of the first fastening element 17 with the deformation section 24 of the second fastener 20 improve again.

Although the present invention has been described on the basis of exemplary embodiments, it can be modified in many ways.

LIST OF REFERENCE NUMBERS

1

Household appliance; Domestic dishwasher

2

niche

3

wall

4

wall

5

rear wall

6

Reception area; rinse tank

7

door

8th

rinsing chamber

9

swivel axis

10

ground

11

blanket

12

rear wall

13

Side wall

14

Side wall

15

Spülgutaufnahme

16

fastening device

17

fastener

18

receiving portion

19

inner wall

20

fastener

21

central axis

22

spacer section

23

spacer section

24

deforming section

25

drilling

26

fastener

27

threaded portion

28

shank portion

29

screw head

30

front

31

front

32

reception area

33

reception area

34

positioning

35

breakthrough

36

front

37

plug-in section

38

drilling

39

stop section

A

extraction direction

b ₂

niche width

d ₁₈

diameter

d ₂₀

diameter

d ₂₄

diameter

d ₂₅

diameter

d ₂₈

diameter

d ₂₉

diameter

d ₃₇

diameter

d ₃₈

diameter

e

insertion direction

F

force

L

longitudinal direction

l ₂₀

length

u ₂₀

outer periphery

.DELTA.l

length difference

Claims (14)

Fastening device (16) for fastening a household appliance (1), in particular a household dishwasher, to a wall (3, 4), with a first fastening element (17) provided on the household appliance (1), a second fastening element (20), which is received in a receiving section (18) of the first fastening element (17), the second fastening element (20) having a first spacing section (22), a second spacing section (23) and an elastically deformable deformation section (24) which is between the first Spacing section (22) and the second spacing section (23) is arranged, and a third fastening element (26) which is set up to fasten the second fastening element (20) to the wall (3, 4), the deformation section (24) of the second fastening element (20) when fastening the same to the wall (3, 4) in a longitudinal direction (L) of the second fastening element (20) with the aid of the third Fastening element (26) is compressible, so that the deformation section (24) bulges radially over an outer circumference (u ₂₀ ) of the first spacing section (22) and the second spacing section (23) in order to form and / or shape the second fastening element (20) to be non-positively fixed in the receiving section (18), and the deformation section (24) and the spacing sections (22, 23) are made of different materials. Fastening device (16) after Claim 1 , characterized in that the second fastening element (20) is tubular, in particular hollow cylindrical. Fastening device (16) after Claim 1 or 2 , characterized in that the third fastening element (26) is passed through the second fastening element (20). Fastening device (16) according to one of the preceding claims, characterized in that the deformation section (24) is non-releasably connected to the first spacing section (22) and the second spacing section (23). Fastening device (16) according to one of the preceding claims, characterized in that the deformation section (24) is made of an elastomer, in particular of rubber or an elastic polyurethane material. Fastening device (16) according to one of the preceding claims, characterized in that the first spacing section (22) and / or the second spacing section (23) made of a plastic material, in particular of a thermoplastic material, or are made of a metal material. Fastening device (16) according to one of the preceding claims, characterized in that the second fastening element (20) is a multi-component injection-molded component, in particular the deformation section (24), the first spacing section (22) and / or the second spacing section (23) being molded onto one another , Fastening device (16) according to one of the preceding claims, characterized in that the deformation section (24) is arranged centrally between the first spacing section (22) and the second spacing section (23). Fastening device (16) according to one of the Claims 1 to 7 , characterized in that the deformation section (24) is arranged off-center between the first spacing section (22) and the second spacing section (23), the second fastening element (20) comprising a positioning aid (34) which is set up to secure the second fastening element (20) in only one predetermined installation position, in which the deformation section (24) is arranged completely within the receiving section (18), to be positioned in the receiving section (18). Fastening device (16) according to one of the preceding claims, characterized in that a diameter (d ₁₈ ) of the receiving section (18) larger than a diameter (d ₂₀ ) of the second fastening element (20) before fastening the same to the wall (3, 4 ) is. Fastening device (16) according to one of the preceding claims, characterized in that the third fastening element (26) is a screw with a threaded section (27) and a screw head (29). Fastening device (16) according to one of the preceding claims, characterized in that the second fastening element (20) comprises a stop section (39) which is set up to limit the compression of the deformation section (24). Household appliance (1), in particular household dishwasher, with a fastening device (16) according to one of the preceding claims, wherein a first fastening element (17) of the fastening device (16) is fastened to a receiving area (6), in particular washing container, of the household appliance (1). Household appliance (1) after Claim 13 , characterized in that the first fastening element (17) is provided on the front or door side on the receiving area (6), in particular the washing container.

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