DE102016121470A1 - Sliding and lifting mechanism as well as furniture and household appliance - Google Patents

Abstract

The invention relates to a sliding and lifting mechanism of a shelf of a piece of furniture or household appliance, comprising a scissor mechanism (2) with at least two crossed and rotatably interconnected scissor levers (4, 5) for raising and lowering the tray, wherein a first scissor lever (4) a first end (41) is rotatable and a second scissor lever (5) at a first end (51) rotatably and slidably connected to the tray, wherein at a second end (42) of the first scissor lever (4) has a first roller (7) the second ends (42, 52) of the scissor levers (4, 5) being coupled to a pull-out guide (3) for extracting the tray from and inserting it into a body of the piece of furniture or household appliance; 42) of the first scissor lever (4) arranged first roller (7) along a running rail (31) of the pullout guide (3) is arranged movable and wherein the second end (52) of the second scissor lever (5) rotates bar connected to the running rail (31). The invention further relates to a piece of furniture or household appliance with such a sliding and lifting mechanism.

Description

The present invention relates to a sliding and lifting mechanism of a shelf of a piece of furniture or household appliance according to the preamble of claim 1 and a piece of furniture and a household appliance.

A generic sliding and lifting mechanism of a shelf of a piece of furniture or household appliance is for example from the DE 10 2015 102 500 A1 known.

Such a sliding and lifting mechanism is used, for example, lifting a dish rack in a dishwasher, wherein the crockery basket is lifted from a lower position to a raised position via a scissors mechanism arranged on both sides of the basket for loading or unloading the crockery basket to a loading and unloading the harness in a spine and back muscles of a user gentle position to allow.

On scissor arms of the scissors mechanism here rollers are attached, which allow withdrawal of the dish rack from the body of the dishwasher, wherein the rollers are movable on a pivoted in a horizontal position appliance door of the dishwasher.

The disadvantage here is that the appliance door must be accurately fitted with additional components in order to ensure an exact guidance of the rollers of the sliding and lifting mechanism.

An object of the present invention is to provide a sliding and lifting mechanism with which an adaptation of a device or furniture door is not required.

This object is achieved by a sliding and lifting mechanism of a shelf of a piece of furniture or household appliance with the features of claim 1.

The object is further achieved by a furniture or household appliance with the features of claim 13.

The sliding and lifting mechanism according to the invention has a scissors mechanism with at least two intersecting and interconnected scissor levers for raising and lowering the tray. In this case, a first scissor lever is rotatable at a first end and a second scissor lever at a first end rotatably and slidably connected to the tray. At a second end of the first scissor lever, a first roller is arranged. The second ends of the scissor levers are coupled with a pullout guide for removing the tray from or insertion into a body of the furniture or household appliance, wherein a arranged at the second end of the first scissor lever first roller along a running rail of the pullout guide is arranged movable and wherein the second end of the second scissor lever is rotatably connected to the running rail.

The arrangement of such a drawer guide at the second ends of the scissors lever, it is possible to pull out the tray on the pullout guide as a sliding mechanism out of the furniture or household appliance body without having to provide a guide on the furniture or appliance door.

Advantageous embodiments of the invention are the subject of the dependent claims.

According to an advantageous embodiment of the sliding and lifting mechanism according to the invention, a second roller for supporting the scissor lever on a door of the furniture or household appliance is arranged at a second end of the scissor lever.

The second roller serves to relieve the drawer slide, as in the pulled out of the body of the furniture or household appliance state of storage by the second roller a removal of weight on the furniture or appliance door is possible.

In order to prevent lifting of the second end of the first scissor lever from the running rail, according to a further preferred embodiment, a sliding or roller bearing arranged on a side of the running rail opposite the first running gear is arranged on the second end of the first scissor lever.

This sliding or roller bearing is preferably in the form of at least one third roller, preferably two lying in the extension direction adjacent third rollers, which rest on one of the first roller opposite side of the running rail.

According to a further preferred embodiment, the pullout guide in addition to the running rail on a middle rail and a guide rail, wherein the second roller is positioned in the inserted state in the extension direction in front of the guide rail.

Particularly preferably, the middle rail is formed in two parts, wherein a guide rail leading the first rail part in the extension direction in such a way is fixed to a run on the guide rail second rail part is fixed, that a portion of the first rail part projects beyond a front end in the extension direction of the second rail part and thereby allows the second roller is positioned in the inserted state of the tray in the extension direction in front of the guide rail and not collided with this.

According to a further advantageous embodiment of the invention, the first roller engages perpendicular to the extension and lifting direction positively the running rail.

By this contour adjustment of the roller relative to the running rail exact guidance of the roller on the running rail is made possible and prevents lateral breaking of the roller perpendicular to the longitudinal direction of the running rail.

According to a further embodiment variant of the sliding and lifting mechanism according to the invention, the at least one third roller engages under the form-locking track, perpendicular to the extension and the lifting direction. This also allows an exact guidance of the lifting mechanism on the sliding mechanism.

The attachment of the second roller at the second end of the scissor lever is preferably carried out via a fixed to the second end of the first scissor lever holding member to which the second roller is rotatably mounted.

In order to enable a damped closing movement of the shelf in the body of the furniture or household appliance, the drawer guide preferably has a damping device for damping a thrust movement of the shelf in the furniture or household appliance body or for damping a pull-out movement when pulling out the shelf from the body of the furniture or household appliance on.

The furniture or household appliance according to the invention is characterized by a sliding and lifting mechanism, which is designed as described above.

According to a preferred embodiment, the shelf is the dish rack of a household appliance.

The embodiments will be explained in more detail with reference to the accompanying drawings.

• 1 eine perspektivische Darstellung einer bevorzugten Ausführungsvariante eines erfindungsgemäßen Schiebe- und Hubmechanismus bei ausgezogener Auszugsführung,
• 2 eine perspektivische Detailansicht eines in 1 mit II bezeichneten Ausschnitts,
• 3, 4 der in 1 und 2 entsprechende perspektivische Darstellungen des Schiebe- und Hubmechanismus aus einer anderen Perspektive,
• 5 eine Ansicht von vorn auf den Bereich des zweiten Endes des ersten Scherenhebels des in den 1-4 gezeigten Schiebe- und Hubmechanismus,
• 6 eine perspektivische Darstellung des in 1 gezeigten Schiebe- und Hubmechanismus im angehobenen Zustand der Scherenhebel,
• 7 eine Ausschnittsvergrößerung des in 6 mit VII bezeichneten Bereichs des Schiebe- und Hubmechanismus,
• 8,9 den in den 6 und 7 entsprechende perspektivische Darstellungen aus einer anderen Perspektive,
• 10 eine Seitenansicht auf einer Ausführungsvariante des Schiebe- und Hubmechanismus im abgesenkten und eingefahrenen Zustand,
• 11 eine perspektivische Ansicht des Schiebe- und Hubmechanismus in der in 10 gezeigten Position und
• 12 eine Detailansicht des in 11 mit XII bezeichneten Ausschnitts des Schiebe- und Hubmechanismus.

Show it:

• 1 a perspective view of a preferred embodiment of a sliding and lifting mechanism according to the invention with pulled-out pullout guide,
• 2 a detailed perspective view of an in 1 Section marked II,
• 3 . 4 the in 1 and 2 corresponding perspective views of the sliding and lifting mechanism from a different perspective,
• 5 a front view of the area of the second end of the first scissor lever in the 1 - 4 shown sliding and lifting mechanism,
• 6 a perspective view of the in 1 shown sliding and lifting mechanism in the raised state of the scissors lever,
• 7 an enlarged detail of the in 6 VII area of the sliding and lifting mechanism,
• 8th . 9 in the 6 and 7 corresponding perspective views from a different perspective,
• 10 a side view of a variant of the sliding and lifting mechanism in the lowered and retracted state,
• 11 a perspective view of the sliding and lifting mechanism in the in 10 shown position and
• 12 a detailed view of the in 11 XII section of the sliding and lifting mechanism.

In the following description of the figures, terms such as sliding and lifting mechanism, scissor lever, roller, running rail, etc. refer exclusively to the example representation and position of the sliding and lifting mechanism and other parts selected in the respective figures. These terms are not intended to be limiting, that is to say, by different working positions or the mirror-symmetrical design or the like, these references may change.

In the 1 is with the reference numeral 1 Overall, an embodiment variant of a sliding and lifting mechanism according to the invention a shelf of a piece of furniture or household appliance referred. The 3 . 6 . 10 and 11 show the sliding and lifting mechanism from other perspectives and in different working positions. In all figures, like reference numerals designate the same or equivalent elements.

As in the 1 - 4 shown, the sliding and lifting mechanism 1 a scissor mechanism 2 with at least two crossed and rotatably interconnected scissor levers 4 . 5 for raising and lowering the tray (not shown). To raise and lower the tray is on both sides of the tray such a sliding and lifting mechanism 1 appropriate.

The shelf is at first, upper ends 41 . 51 the scissors lever 4 fixed so that when adjusting the sliding and lifting mechanism of a in 1 shown position in an example in 6 shown raised loading and unloading position the shelf remains in its horizontal position.

The tray itself is in the case of a trained example as a dishwasher household appliance designed as a dish rack in the dishes to be cleaned can be stored. It is also conceivable, however, the arrangement of such a sliding and lifting mechanism 1 on a movable out of a furniture carcass and liftable drawer or the like.

Each of the scissors levers 4 . 5 is designed in the embodiment shown here as a multi-angled arm. The scissors levers 4 . 5 are centrally via a scissors joint 12 scissor-like connected to each other pivotally.

The storage is determined by a at the first end 41 the first scissor lever 4 arranged swivel joint 43 as well as a sliding or rolling element 15 that at the first end 51 of the second scissor lever 5 is arranged. The sliding or rolling element 15 is here in the form of a roller formed in a sliding guide 11 is guided, which is attachable to the tray.

The second ends 42 . 52 the first scissor lever 4 and the second scissor lever 5 are with a pullout guide 3 coupled, by means of which the shelf from a body of the furniture or household appliance extendable or in the body of the furniture or household appliance can be inserted.

The pullout guide 3 in this case preferably has a guide rail 33 on which is fixed in the interior of the cabinet or household appliance as well as a center rail 32 and a running track 31 ,

The second end 52 of the second scissor lever 5 is stationary, but rotatable with the track 31 connected. This is on the track 31 preferably a holding element 13 , preferably in the form of a metal web, fastened, for example, welded, screwed, riveted or glued. The holding element 13 is with a swivel 53 provided with the second end 52 of the second scissor lever 5 is coupled.

The second end 42 the first scissor lever 4 has a roller 7 on that along the track 31 is arranged movable and so the lifting movement of the sliding and lifting mechanism by the scissor movement of the scissor lever 4 . 5 allows each other.

As in the in 2 shown detail is to be seen at the second end 42 the first scissor lever 4 Furthermore, a second roller 8th for supporting the scissors lever 4 arranged on a door of the furniture or household appliance. Through this caster 8th It allows weight forces to be applied to the front end of the track rail 31 act on the furniture or appliance door to remove and so on the pullout guide 3 to reduce acting load.

To prevent lifting of the second end 42 the first scissor lever 4 from the track 31 and in particular the guided on this roller 7 is at the second end 42 the first scissor lever 4 Furthermore, on one of the first roller 7 opposite side of the track 31 arranged slide or roller bearings 9 arranged.

This sliding or rolling bearing 9 has at least one third roller 91 on, on one of the first caster 7 opposite side of the track 31 is applied. In the embodiment shown here has the sliding or rolling bearings 9 two such rollers 91 on, like in 4 is shown. The contour of the roller 91 is so to the contour of the lower part of the track 31 adapted to be longitudinal X the track 31 can be moved along this.

The rollers 91 engage under the track 31 perpendicular to the extension direction x and the stroke direction z of the sliding and lifting mechanism 1 , As in 4 is shown, engage behind the third rollers 91 while a lower edge of the track 31 in such a way that a movement perpendicular to the extension direction x in a direction y is prevented and thus an exact guidance of the second end 42 the first scissor lever 4 along the track 31 is guaranteed.

As in the 10 - 12 is shown is the length of the track 31 , the middle rail 32 and the carcass rail 33 matched so that the second roller 8th in the inserted state of the pullout guide 3 in the extension direction x in front of the carcase rail 33 is positioned.

In the embodiment shown here, this is made possible by the fact that the middle rail 32 is formed in two parts. One is the track 31 leading first rail part 321 in the extension direction x offset at one on the carcass rail 33 guided second rail part 322 fixed that one area 323 of the first rail part 321 via a front end of the second rail part in the extension direction x 322 how it protrudes in 11 and the in 12 illustrated detail is shown.

For exact guidance of the second end 42 the first scissor lever 4 overlaps the first roller 7 the track 31 perpendicular to the extension and stroke direction positively, such as in 5 can be seen. For this purpose, the bearing surface of the first roller 7 to a portion of the contour of the track 31 customized. In the embodiment shown here covers the tread of the roller 7 completely the horizontal aligned top of the track 31 and extends on both sides of this top a little way in the direction of the vertically bent side surfaces of the running rail 31 ,

The attachment of the second roller 8th at the second end 42 the first scissor lever 4 preferably takes place via a at the second end 42 the first scissor lever 4 attached retaining element 10 as it is in the 2 . 4 . 5 and 7 easy to recognize. The holding element 10 is preferably formed as a piece of sheet metal bent approximately in the shape of a z, which is connected via a rotary joint 44 with the second end 42 the first scissor lever 4 connected is. At the lower end of the retaining element 10 is the second roller 8th that by the z-shaped bend at least partially below the track 31 is positioned, rotatable. The second roller 8th is here on one of the track 31 opposite side of the retaining element 10 established.

This holding element 10 preferably also serves to determine the sliding or roller bearing 9 on one of the rails 31 facing side of the retaining element 10 ,

The pullout guide 3 is further preferred with a damping device, in particular for damping a thrust movement of the shelf in the furniture or household appliance body to allow or for damping a pull-out movement when pulling out the tray via a handle 61 a pivot lever 6 that rotates about an auxiliary arm 16 to the hinge 12 for the rotatable connection of the two scissor arms 4 . 5 is coupled.

It is also conceivable to provide in the region of the running rail means for preventing a simultaneous sliding and lifting movement, in order to ensure that raising or lowering of the tray using the scissors lever 4 . 5 only with pull-out guide in a pull-out position 3 like her, for example 6 is shown, can take place.

LIST OF REFERENCE NUMBERS

1

Sliding and lifting mechanism

2

scissor mechanism

3

pull-out guide

31

runner

32

middle rail

321

first rail part

322

second rail part

323

Area

33

cabinet member

4

first scissor lever

41

first end

42

second end

43

swivel

44

swivel

5

second scissor lever

51

first end

52

second end

53

swivel

6

pivoting lever

61

Handle

7

first roller

8th

second roller

9

Sliding or rolling bearings

91

third roller

10

retaining element

11

sliding guide

12

scissor joint

13

retaining element

15

Sliding or rolling element

16

auxiliary arm

X

extraction direction

Y

direction

Z

stroke direction

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 102015102500 A1 [0002]

Claims (15)

Sliding and lifting mechanism of a shelf of a piece of furniture or household appliance, comprising - a scissors mechanism (2) with at least two crossed and rotatably interconnected scissor levers (4, 5) for raising and lowering the tray, - wherein a first scissor lever (4) at a first End (41) is rotatable and a second scissor lever (5) at a first end (51) rotatably and slidably connected to the tray, - wherein at a second end (42) of the first scissor lever (4) a first roller (7) is, characterized in that - the second ends (42, 52) of the scissor levers (4, 5) with a pullout guide (3) for extracting the tray from a and are coupled into a body of the furniture or household appliance, - wherein the the second end (42) of the first scissor lever (4) arranged first roller (7) along a running rail (31) of the pullout guide (3) is arranged movable and - wherein the second end (52) of the second scissor lever (5) is rotatably connected to the running rail (31). Sliding and lifting mechanism after Claim 1 , characterized in that at the second end (42) of the first scissor lever (4) a second roller (8) for supporting the scissors lever (4) is arranged on a door of the furniture or household appliance. Sliding and lifting mechanism after Claim 1 or 2 , characterized in that at the second end (42) of the first scissor lever (4) on one of the first roller (7) opposite side of the running rail (31) arranged sliding or rolling bearing (9) is arranged. Sliding and lifting mechanism after Claim 3 , characterized in that the sliding or rolling bearing (9) has at least one third roller (91), which rests against one of the first roller (7) opposite side of the running rail (31). Sliding and lifting mechanism according to one of the preceding claims, characterized in that the pull-out guide (3) next to the running rail (31) has a middle rail (32) and a carcass rail (33), wherein the second roller (8) in the inserted state in the extension direction (x) is positioned in front of the carcass rail (33). Sliding and lifting mechanism after Claim 5 , characterized in that the middle rail (32) is formed in two parts, wherein the running rail (31) leading first rail part (321) in the extension direction (x) offset in such a manner on the carcass rail (33) guided second rail part (322) is fixed in that a region (323) of the first rail part (321) projects beyond an extension end (x) of the second rail part (322). Sliding and lifting mechanism according to one of the preceding claims, characterized in that the first roller (7) engages over the running rail (31) in a form-fitting manner perpendicular to the extension and lifting directions. Sliding and lifting mechanism according to one of the preceding claims, characterized in that the at least one third roller (91) perpendicular to the extension direction (x) and the stroke direction (z) engages positively under the running rail (31). Sliding and lifting mechanism according to one of the preceding claims, characterized in that the second roller (8) rotatably mounted on a holding element (10) fixed to the second end (42) of the first scissor lever (4). Sliding and lifting mechanism after Claim 9 , characterized in that the second roller (8) on one of the running rail (31) facing away from the holding element (10) is arranged. Sliding and lifting mechanism after Claim 9 or 10 , characterized in that the sliding or rolling bearing (9) on one of the running rail (31) facing side of the holding element (10) is fixed. Sliding and lifting mechanism according to any one of the preceding claims, characterized in that the pull-out guide (3) has a damping device for damping a push and / or pull-out movement. Furniture or household appliance with a body (2) and a tray with a both sides of the tray arranged sliding and lifting mechanism, wherein the shelf via the sliding and lifting mechanism from the furniture body is pulled out and raised, characterized in that the sliding and lifting mechanism according to one of the Claims 1 to 11 is trained. Household appliance, in particular dishwasher (1), after Claim 13 , with a door on which the second rollers (8) can be supported. Household appliance after Claim 13 or 14 formed as a dishwasher (1), wherein the tray is a dish rack.

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