EP4258939A1

EP4258939A1 - Raising-lowering extraction device, and piece of furniture or household appliance

Info

Publication number: EP4258939A1
Application number: EP21835593.1A
Authority: EP
Inventors: Benjamin BEXTERMÖLLER; Arnold GURR
Original assignee: Paul Hettich GmbH and Co KG
Current assignee: Paul Hettich GmbH and Co KG
Priority date: 2020-12-08
Filing date: 2021-12-01
Publication date: 2023-10-18
Also published as: WO2022122503A1; DE102020132673A1

Abstract

Described is a raising-lowering extraction device (11) for a tray-type element (14) which is built into a carcass (13), in particular of a piece of furniture (1), the carcass (13) being closable by a cover (10), the raising-lowering extraction device (11) comprising a carcass rail (2) that can be stationarily fastened to the carcass (13), a central rail (12) which is slidably and pivotably arranged on the carcass rail (2), and a tray rail (3) which is slidably and pivotably arranged on the central rail (12) and can be stationarily fastened to the tray-type element (14); the central rail (12) has a first profiled section (4) that is coupled to the carcass rail (2) as well as a second profiled section (5) that is coupled to the tray rail (3), the two profiled sections (4, 5) being coupled to one another so as to be slidable in the direction of the longitudinal axis thereof (L); the central rail (12) is pivotably coupled to a control lever (8) which can rotate about a pivot pin (17) on the tray rail (3) or the tray-type element (14) and which is coupled to a pivoting mechanism (9) for pivoting the cover (10). Also described is a piece of furniture (1) or household appliance comprising a raising-lowering mechanism of said type.

Description

Raise and lower pull-out device and furniture or household appliance

The present invention relates to a lifting and lowering pull-out device for a shelf built into a body that can be closed by a cover, in particular a piece of furniture, according to the preamble of claim 1 .

The invention also relates to a piece of furniture or a household appliance with such a lifting and lowering pull-out device.

Generic lifting and lowering pull-out devices, known for example from EP 3 411 268 B1, are used, for example, to remove shelves arranged in a furniture body of a piece of furniture, such as a drawer or a shelf, from a position inside the body of the furniture or the household appliance from this both to drive out as well as to raise or lower.

If a cover is arranged in front of the shelf, with which the body of the piece of furniture can be closed when the shelf is pushed into the body, access to the objects stored on the shelf is often made more difficult by the cover attached to the shelf.

The object of the present invention is to further develop a lifting/lowering pull-out device of the generic type in such a way that access to the objects placed on the shelf is facilitated.

This object is achieved by a lifting and lowering pull-out device with the features of claim 1 and by a piece of furniture or household appliance with the features of claim 9.

The lifting/lowering pull-out device according to the invention for a shelf installed in a body that can be closed by a cover, in particular a piece of furniture, has a body rail that can be fixed in place on the body, a center rail that can be displaced and pivoted on the body rail, and a center rail that can be displaced and pivoted on the center rail Pivotably arranged storage rail that can be fixed in place on the shelf. The center rail has a first profile coupled to the body rail and a second profile coupled to the storage rail, the two profiles being coupled to one another so that they can be displaced in the direction of their longitudinal axis.

The center rail is pivotally coupled to a control lever that can be rotated about an axis of rotation on the storage rail or the storage area and is also coupled to a pivoting mechanism for pivoting the cover.

With a lifting/lowering pull-out device designed in this way, it is possible in a simple manner to pivot the cover at the same time as the shelf is being moved out of the piece of furniture in such a way that the cover is pivoted into a position that does not impede access to the objects on the shelf becomes.

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

According to an advantageous embodiment variant, the second profile of the central rail is coupled to the control lever.

According to a further advantageous embodiment variant, the profiles of the center rail are coupled to one another via a slide rail.

This enables the lifting/lowering extension device to be pulled out particularly far.

According to a further advantageous embodiment variant, the two profiles of the central rail have guide grooves which extend in the direction of their longitudinal axis and in which guide pins protruding from the inner side surfaces of the carcass rail or the storage rail are guided.

This allows the first profile to be guided in a simple manner along the carcass rail while at the same time enabling the first profile to be pivoted out of the carcass rail and, correspondingly, the second profile to be guided along the storage rail while at the same time enabling the second profile to be pivoted out of the storage rail. According to a further advantageous embodiment variant, the body rail is coupled to the first profile of the center rail via a pivoting guide bar in order to carry out a guided pivoting movement of the center rail relative to the body rail.

According to a further advantageous embodiment variant, a stabilizing element that overlaps the second profile in a direction perpendicular to its longitudinal axis and protrudes into a c-shaped receiving space of the storage rail is fixed in place on the first profile of the center rail.

Correspondingly, a stabilizing element that overlaps the first profile in a direction perpendicular to its longitudinal axis and protrudes into a c-shaped receiving space of the body rail is fixed in place on the second profile of the center rail.

The two stabilizing elements make it possible to absorb a sufficient load and thus increase the load-bearing capacity of the lifting/lowering pull-out device.

According to an advantageous development, the stabilizing elements consist of holding webs fastened to the side walls of the respective profile, which are connected to one another in the area of their free ends by a bolt passing through the holding webs, wheel-shaped bolt heads being arranged on the bolt ends on the outer sides of the holding webs, which are arranged in raceways the cabinet rail or the storage rail are guided.

The piece of furniture or household appliance according to the invention with a body and at least one raising and lowering extension device fastened in a receiving space of the body that can be covered by a cover and having a shelf, the shelf being able to be moved linearly and raised and lowered via the raising and lowering extension device is characterized by a lifting and lowering pull-out device as described above.

In an advantageous embodiment variant, the cover is attached exclusively to the pivoting mechanism.

According to an advantageous development, the pivoting mechanism has a first lever, which is rigidly attached to the cover and is coupled to the shelf via a pivot axis, and a second lever, which is attached at a first end is pivotally coupled at a second end to the first lever and at a second end to a second end of the control lever.

According to a further embodiment variant, the lifting/lowering pull-out device is coupled to a motor for motor-driven movement of the tray.

This makes it possible to move the shelf under motor control, which further increases the convenience of using the shelf.

In addition, with such an embodiment variant, an actuating handle on the cover for moving the shelf can be dispensed with.

In an advantageous development, the drive linkage has a first drive lever coupled to the motor and a second drive lever coupled to the shelf via a pivot axis, the drive levers being connected to one another via a rotary joint.

According to a further advantageous embodiment variant, the motor can be designed without an additional drive linkage and form a drive directly on a pivot point of the lifting/lowering mechanism. For example, the pivot point between the cabinet rail and one pivoting guide web can be used.

Preferred exemplary embodiments are explained in more detail below with reference to the drawings. Show it:

Figure 1 shows a schematic perspective representation of an embodiment variant of a piece of furniture according to the invention with a cover closing a body,

FIG. 2 shows a schematic side view of a shelf arranged in the body of the piece of furniture, which can be moved relative to the body of the piece of furniture via a lifting/lowering pull-out device according to the invention and is covered on the outside by the cover,

FIG. 3 shows a side view of the lifting/lowering pull-out device shown in FIG. 2 in a starting position, in which the shelf is positioned inside the body of the piece of furniture, FIG. 4 shows a schematic front view of the lifting/lowering pull-out device in the closed position shown in FIG. 3,

Figure 5 is an isometric exploded view of the lifting and lowering extension device,

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6-8 representations corresponding to FIGS. 1-3 with the shelf pulled out linearly from the body of the piece of furniture,

FIG. 9 shows a detailed representation of a section of the lifting/lowering pull-out device of the section designated IX in FIG. 8,

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10-12 representations corresponding to FIGS. 6-8 with the shelf completely pulled out of the body of the furniture and slightly lowered,

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13-15 representations corresponding to FIGS. 10-12 with the shelf lowered even further and the cover folded down further,

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16-18 representations corresponding to FIGS. 13-15 with the shelf in a fully extended and lowered position in an end position with the cover pivoted out of the access area for the shelf,

FIG. 19 is an exploded isometric view of the lifting and lowering extension device and the shelf and the cover covering this shelf,

FIG. 20 an isometric view corresponding to FIG. 19 showing only the tray, the cover, the pivoting mechanism for the cover and the control lever of the lifting/lowering pull-out device, FIG. 21 shows a schematic side view, corresponding to FIG

FIG. 22 shows an illustration corresponding to FIG. 11 of the embodiment variant shown in FIG. 21 with the shelf completely pulled out of the body of the piece of furniture and slightly lowered.

In the following description of the figures, terms such as top, bottom, left, right, front, rear, etc. refer exclusively to the exemplary representation and position of the lifting/lowering pull-out device, body rail, storage rail, middle rail, control lever, storage, selected in the respective figures. cover and the like. These terms are not to be understood as limiting, i.e. these references can change due to different working positions or the mirror-symmetrical design or the like.

In FIG. 1, reference numeral 1 designates a variant of a piece of furniture. The piece of furniture 1 has a body 13 in which a shelf 14, as shown by way of example in FIG 10 is covered.

The retracted state of the shelf 14 in the piece of furniture 1 is shown in FIG. 2 (without showing the furniture body 13).

As shown in FIG. 2, the cover 10 is coupled to a control lever 8 of the lifting/lowering extension device 11 via a pivoting mechanism 9 .

Due to the coupling with the control lever 8, the cover 10 can be moved from a closed position shown in Figure 2, in which the shelf 14 is completely retracted in the furniture carcass 13 of the furniture 1, covered by the cover 10, into a usage or operating position, as is shown, for example, in 16 or 17, can be pivoted, with the cover 10 being pivoted in the use or operating position, as can be seen clearly in FIG cover 10 would make access to tray 14 difficult. As shown in FIGS. 3 to 5, the lifting/lowering pull-out device 11 has a carcass rail 2 that can be fixed in place on the carcass 13 of the piece of furniture 1 . A middle rail 12 is arranged on the body rail 2 in a displaceable and pivotable manner. Next is on this center rail 12, a storage rail 3, which is fixed in place on the shelf 14, slidably and pivotally arranged.

The middle rail 12 has at least one first profile 4 coupled to the cabinet rail 2 and a second profile 5 coupled to the storage rail 3 . The two profiles 4, 5 are slidably coupled to one another in the direction of their longitudinal axis L.

In the embodiment variant shown here, the two profiles 4, 5 are coupled via a slide rail 6.

The slide rail 6 has a first slide profile 61 and a second slide profile 62 formed on top of this first slide profile 61 . Each of the slide profiles 61, 62 is accommodated in an approximately c-shaped receiving space 42, 52 of the first rail profile 4 and the second rail profile 5, respectively.

The displaceable and pivotable coupling of the two profiles 4, 5 with the carcass rail 2 on the one hand and the storage rail 3 on the other hand enables a longitudinal displacement along the longitudinal axis L between the storage rail 3 and the middle rail 12 or the middle rail 12 and the carcass rail 2. At the same time, this coupling enables pivoting of the center rail 12 relative to the cabinet rail 2 and the storage rail 3, as is shown in FIG. 7 by way of example.

A tilting recess 23 , 33 is provided at one end of the body rail 2 and the storage rail 3 in order to enable pivoting of the center rail 12 relative to the body rail 2 and the storage rail 3 .

FIGS. 6-9 show a tray 14 pulled out of the receiving space 16 of the body 13, which in this position is still displaced exclusively along the longitudinal axis L of the body rail 2 or the storage rail 3 in a direction x. At the same time, in this position, the center rail 12 is already slightly inclined in relation to the cabinet rail 2 and the storage rail 3 . As can be seen clearly in FIGS. 5 and 7, the middle rail 12 is pivotably coupled to a control lever 8 which can be rotated about an axis of rotation 17 on the storage rail 3 or the storage 14 and which, as already explained above, is connected to the pivoting mechanism 9 for pivoting the cover 10 is coupled.

In the preferred embodiment variant shown here, it is the second profile 5 of the middle rail 12 which is coupled to the control lever 8 at a first end 81 .

The coupling takes place here via a swivel joint, which is arranged, in particular formed on or fastened to a connecting web 53 of a front end of the second rail profile 5 in the extension direction and which allows the control lever 8 to be pivoted relative to the second rail profile 5 by a direction perpendicular to the surface of the side wall 141 of the Storage 14 standing axis of rotation allows.

The axis of rotation 83 of the control lever 8 can, as shown in FIGS.

It is also conceivable to form or fasten a connecting web corresponding to the connecting web 24 of the carcass rail 2, on which a pivoting guide web 7 is pivotably fixed, which will be explained in more detail below, on the storage rail 3 and to arrange a pin or pivot bolt on it, which serves as the axis of rotation 17 for the control lever 8 is used.

The pivoting guide web 7 attached to the body rail 2 is pivotally attached at a first end 71 to a connecting web 43 of the first rail profile 4 and at a second end 72 to the connecting web 24 of the body rail 2, thus enabling a controlled tilting or pivoting movement of the center rail 12 relative to the cabinet rail 2.

In order to couple the first profile 4 to the carcass rail 2 or to couple the second profile 5 to the storage rail 3, the two profiles 4, 5 have guide grooves 41, 51 which extend in the direction of their longitudinal axis L, in which the inner side surfaces of the carcass rail 2 or Guide bolts 22, 32 protruding from the storage rail 3 are guided. These guide bolts 22, 32 enable a reliable shifting movement of the profiles 4, 5 relative to the cabinet rail 2 or storage rail 3 and also allow the required pivoting movement of the profiles 4, 5 out of the plane of the cabinet rail 2 or storage rail 3 parallel to the side wall 141 of tray 14.

As further shown in Figures 3 and 5, a stabilizing element 44 which overlaps the second profile 5 in a direction perpendicular to its longitudinal axis L and protrudes into a c-shaped receiving space 31 of the storage rail 3 is fixed in place on the first profile 4 on the center rail 12 .

A corresponding stabilizing element 54 is fixed in place on the second profile 5 of the center rail 12 such that the first profile 4 overlaps in a direction perpendicular to its longitudinal axis L and protrudes into a c-shaped receiving space 21 of the body rail 2 .

As can further be seen in FIG. 5, these stabilizing elements 44, 54 are composed of retaining webs 441, 541 fastened to the side walls of the respective profile 4, 5 and bolts 442, 542 passing through them in the region of their free ends, with the bolt ends on the Wheel-shaped bolt heads 443, 543 are arranged on the outer sides of the retaining webs 441, 541, which are guided in raceways 25, 35 of the carcass rail 2 and the storage rail 3, respectively.

The pivoting mechanism 9 for pivoting the cover 10 has a first lever 91 rigidly attached to the cover 10, the first end 94 of which is attached to the cover 10 and which has a pivot axis 18, for example in the form of a pin 145 protruding from the side wall 141 the shelf 14 is coupled.

One end of this first lever 91 remote from the cover 10 serves as a pivot 95 for connecting a second lever 92 which is designed here as a straight web and whose second end 96 is pivotally coupled to the second end 82 of the control lever 8 .

The tray 14 is pulled out of the body 13 of the piece of furniture 1 in such a way that by pulling on a handle 15 attached to the cover 10 (in the embodiment variant shown, one handle 15 is on an upper edge and another handle 15 is on a lower edge the cover 10 attached) from the position shown in FIG. 1 via the position shown in FIG. 6, which has also already been explained, in which the shelf was initially only moved horizontally out of the body of the piece of furniture 13, via a position shown in FIGS. 10-12, in which due to the greater inclination of the middle rail composed of the two profiles 4, 5 and the slide rail 6, it is inclined so far that the shelf 14 is also moved horizontally in an area in front of the cabinet rail 2 and is already slightly lowered by the inclination of the middle rail 12 is.

At the same time, in this position, the cover 10 has already been pivoted from its initial vertical position into an inclined state.

A further lowered position of the tray 14 is shown in Figures 13 to 15.

In this position, the angle of inclination between the profiles 4, 5 and the carcass rail 2 or the storage rail 3 has increased again compared to the position shown in FIGS. The shelf 14 is lowered a further piece.

Finally, in FIGS. 16 to 18, the end position of the shelf 14 has been reached. In this position, the cover 10 is pivoted so far that it is positioned almost completely under the tray 14.

Figure 19 again shows an exploded view of the lifting/lowering pull-out device 11 together with the shelf 14 and the pivoting mechanism 9 as well as the cover 10.

As shown here, the carcass rail 2 is preferably fixed to the inside of the carcass 13 of the piece of furniture 1 via at least one approximately L-shaped fastening plate 19 .

FIG. 20 illustrates the assembly of the pivoting mechanism for the cover 10 and the control lever 8 of the lifting/lowering pull-out device.

In the exemplary embodiment shown in FIGS. 21 and 22, the tray 14 is coupled via at least one drive linkage to a motor 20 for moving the tray 14 in a motor-driven manner. The drive linkage preferably has a first drive lever 201 coupled to the motor 20 and a second drive lever 202 coupled to the shelf 14 via a pivot 203 . The drive levers 201 , 202 are preferably connected to one another via a rotary joint 204 .

The motor 20, preferably an electric motor, is preferably attached to an inner wall of the furniture body 13 of the piece of furniture 1. A handle on the cover 10 can be omitted in this embodiment because of the motorized movement of the tray 14. The movement of the shelf 14 can be triggered via a button on the body or via a remote control. It is also conceivable to control via a wireless interface, such as in smart home applications, using common protocols (WLAN, Bluetooth, Zigbee, ZWave, ...) e.g. on the frequencies 433 MHz or 868 MHz, which allows both operation via smartphone and also allow by voice marriage.

Reference List

1 furniture

2 cabinet rail

21 recording room

22 guide pins

23 tilt recess

24 connecting bridge

25 career

3 storage rail

31 recording room

32 guide pins

33 tilt recess

35 career

4 first rail profile

41 guide groove

42 recording room

43 connecting bridge

44 stabilizing element

441 pier

442 bolts

443 bolt head

5 second rail profile

51 guide groove

52 recording room

53 connecting bridge

54 stabilizing element

541 pier

542 bolts

543 bolt head

6 slide rail

61 first glidestrip

62 second glidestrip 7 swivel guide bar

71 first end

72 second end

73 first area

74 second area

8 control levers

81 first end

82 second end

83 rotary axis mount

9 swivel mechanism

91 first lever

92 second lever

93 first rotary axis recording

94 first end

95 pivot

96 second end

10 cover

11 Raise and lower pull-out device

12 center rail

13 body

14 shelf

141 side wall

144 pen

145 pen

15 handle

16 recording room

17 axis of rotation

18 axis of rotation

19 mounting plate

20 engine

201 first drive lever

202 second drive lever

203 axis of rotation 204 pivot

L longitudinal axis

X direction Y direction

Z direction

Claims

Expectations

1 . Raising and lowering pull-out device (11) for a shelf (14) built into a body (13) that can be closed by a cover (10), in particular of a piece of furniture (1) or a household appliance

- a body rail (2) that can be fixed in place on the body (13),

- a center rail (12) arranged to be displaceable and pivotable on the cabinet rail (2),

- a storage rail (3) which is arranged to be displaceable and pivotable on the middle rail (12) and can be fixed in place on the shelf (14),

- wherein the middle rail (12) has a first profile (4) coupled to the body rail (2) and a second profile (5) coupled to the storage rail (3), and the two profiles (4, 5) in the direction of their longitudinal axis (L ) are slidably coupled to each other, characterized in that

- the middle rail (12) is pivotally coupled to a control lever (8) which can be rotated about an axis of rotation (17) on the storage rail (3) or the storage (14) and is coupled to a pivoting mechanism (9) for pivoting the cover (10). is.

2. Lifting-lowering pull-out device (11) according to claim 1, characterized in that the second profile (5) of the middle rail (12) is coupled to the control lever (8).

3. Lifting and lowering pull-out device (11) according to claim 1 or 2, characterized in that the profiles (4, 5) of the central rail (12) are coupled to one another via a slide rail (6).

4. Lifting and lowering pull-out device (11) according to one of the preceding claims, characterized in that the two profiles (4, 5) of the central rail (12) have guide grooves (41, 51) extending in the direction of their longitudinal axis (L), in which guide bolts (22, 32) protruding from the inner side surfaces of the carcass rail (2) or the storage rail (3) are guided.

5. lifting and lowering extension device (11) according to any one of the preceding claims, characterized in that the body rail (2) with the first profile (4) of the center rail (12) via a pivoting guide web (7) to perform a guided pivoting movement of the center rail

(12) is coupled relative to the body rail (2).

6. lifting and lowering extension device (11) according to any one of the preceding claims, characterized in that on the first profile (4) of the middle rail (12) a second profile (5) in a direction perpendicular to its longitudinal axis (L) overlapping and a stabilizing element (44) protruding into a c-shaped receiving space (31) of the storage rail (3) is fixed in place, and on the second profile (5) of the center rail (12) the first profile (4) in a direction perpendicular to its Longitudinal axis (L) cross-over and in a c-shaped receiving space (21) of the body rail (2) protruding stabilizing element (54) is fixed in place.

7. Lifting-lowering pull-out device (11) according to claim 6, characterized in that the stabilizing elements (44, 54) consist of side walls of the respective profile (4, 5) fixed holding webs (441, 541) in the region of their free ends are connected to one another by a bolt (442, 542) passing through the holding webs, wheel-shaped bolt heads (443, 543) being arranged on the bolt ends on the outside of the holding webs (441, 541), which run in raceways (25, 35) of the carcass rail (2) or the storage rail (3).

8. lifting and lowering pull-out device (11) according to any one of the preceding claims, characterized in that at least one handle (15) is attached to the cover (10).

9. Furniture (1) or household appliance with a body (13) and at least one lifting and lowering pull-out device (11) with a shelf (14) fastened in a receiving space (16) of the body (13) that can be covered by a cover (10). , wherein the shelf (14) on the lifting and lowering extension device (11) can be moved linearly and can be raised and lowered, characterized in that the lifting and lowering extension device (11) is designed according to one of claims 1 to 8.

10. Furniture (1) or household appliance according to claim 9, characterized in that the cover (10) is attached exclusively to the pivoting mechanism (9). - 17 - Furniture (1) or household appliance according to Claim 10, characterized in that the pivoting mechanism (9) has a first lever (91) which is rigidly attached to the cover (10) and which is connected to the shelf (14 ) is coupled, and a second lever (92) pivotable at a first end via a pivot (95) to the first lever (91) and at a second end (96) to a second end (82) of the control lever (8 ) is paired. Furniture (1) or household appliance according to claim 10, characterized in that the lifting-lowering pull-out device (11) is coupled to a motor (12) for motor-driven movement of the tray (4). Furniture (1) or household appliance according to claim 12, characterized in that the motor (20) is coupled via at least one drive linkage to the tray (14). Furniture (1) or household appliance according to Claim 13, characterized in that the drive linkage has a first drive lever (201) coupled to the motor (20) and a second drive lever (202) coupled to the shelf (14) via an axis of rotation (203). , The drive levers (201, 202) being connected to one another via a rotary joint (204).