FURNITURE AND METHOD FOR MOUNTING A SLIDING DOOR ON A FURNITURE BODY

Description

[0001] The present invention relates to a piece of furniture according to the preamble of claim 1, and a method for mounting a sliding door on a furniture body.

[0002] German patent application DE 10 2017 107 910 A1 discloses a piece of furniture with a sliding element that can be suspended from a track via runners and is guided in a lower section by a guide device. The guide device comprises a guide rail fixed to the furniture body and a guide element held on each sliding door, which is vertically slidable on a mounting element. This allows the guide element to move relative to the mounting element when the sliding door is moved, in order to compensate for tolerances in the alignment or positioning of the guide rail. While this type of guide has proven effective, grinding or rattling noises can occur when the guide element moves, particularly because the guide element is held with some play on the guide rail.

[0003] DE 10 2016 109 716 discloses a guide device for a sliding element, comprising a guide rail with at least one groove into which a guide element that can be fixed to a sliding element can be inserted.

[0004] DE 10 2013 100 922 discloses a running element for guiding a furniture fitting along a guide rail, in which a holder is adjustable in order to then run in the guiding direction.

[0005] EP 2 248 977 discloses a guide fitting for a sliding door with a guide housing in which a sliding element is slidably mounted and pre-tensioned by a spring element. A locking tongue is arranged on the sliding element, which can be locked with a locking element of the guide housing.

[0006] In DE 20 2019 102 727 U1 a guide device for a sliding door is disclosed in which the sliding door can be moved along a guide profile.

[0007] This includes a guide element that can be pivoted on the sliding door and has an inlet ramp, which can be moved into a locked guide position during the assembly process.

[0008] KR 2010 0133 213 A shows a roller arrangement for a sliding window held in a frame.

[0009] It is therefore an object of the present invention to create a piece of furniture in which the guidance of the sliding door along the furniture body is improved. In addition, the sliding door should be easy to mount on the furniture body.

[0010] This problem is solved with a piece of furniture having the features of claim 1 and a method for mounting a sliding door on a furniture body having the features of claim 11.

[0011] In the furniture according to the invention, a guide element is slidably held on a mounting element which is fixed to a sliding door, wherein the guide element is pre-tensioned relative to the mounting element by at least one spring element. This pre-tensions the guide element in the sliding direction towards the guide rail, so that a defined contact surface of the guide element rests against the guide rail. When the guide element moves along the guide rail and relative to the mounting element, the at least one spring element ensures that the guide element cannot rattle, but rather moves along the predetermined contact surface along the guide rail.

[0012] According to the invention, the guide element is pre-tensioned downwards in a vertical direction towards the guide rail. This means that the pre-tensioning force of the at least one spring element counteracts the weight of the sliding door.

[0013] To minimize noise when the sliding door is moved, the guide element, according to the invention, comprises at least one rotatably mounted guide roller that can roll along a guide track on the guide rail. This prevents grinding noises such as those that occur with sliding friction. According to the invention, the guide roller rolls along the upper surface of a guide section of the guide rail and is pre-tensioned towards the guide rail by the force of at least one spring element. The guide roller can have a profiled cross-section, for example, concave or convex, to guide the sliding door laterally in a horizontal direction perpendicular to the guide rail.

[0014] For a simple design, the at least one spring element can be integrally formed with the guide part and / or the mounting element. Preferably, the at least one spring element comprises a flexible spring bar that is movable along a curved guide. By means of a corresponding gradient of the curved guide relative to the spring element, the spring element can be tensioned or relaxed depending on the movement of the guide part along the mounting element. The force applied by the at least one spring element can be varied, for example by at least 20%, depending on the orientation of the curved guide. The curved guide can have different gradients along its path to allow the forces to be adjusted according to requirements and situations. Thus, any desired spring rates for predefined work or assembly processes can be easily generated with a single curved guide.

[0015] Preferably, the spring element comprises two flexible spring bars, each movable along a curved guide and pivotable in opposite directions when the guide element is moved relative to the mounting element. This ensures centering and prevents or reduces lateral forces during movement of the guide element relative to the mounting element. The curved guides can be arranged symmetrically relative to a central plane, so that the lateral forces generated by the spring bars essentially cancel each other out perpendicular to the sliding direction, thus achieving centering.

[0016] In a further embodiment, a detent for the flexible spring bar is formed on at least one of the curved guides. This simplifies assembly, as the guide element can be locked into a predetermined position on the mounting element via the detent. From this detent position, the guide element can then be moved to be mounted and slid onto a guide section of the guide rail.

[0017] For a particularly compact design, the at least one spring bar of the spring element can be located on the guide part and the at least one cam guide on the mounting element. This allows the cam guide to be stationary on the sliding door, while the guide part with the at least one spring bar, preferably two spring bars, is movable relative to the mounting element. Conversely, it is also possible to locate the cam guide on the guide part and the at least one spring bar on the mounting element.

[0018] For efficient assembly, the guide element can be either clipped or slid onto the mounting element. The guide element can be slid onto the mounting element from either above or below, preferably with a guide track formed on the mounting element for threading the at least one spring element into the curved guide. This guide track can, for example, be located on an outer surface of the mounting element, accessible from the rear of the sliding door in the assembled position. Moving the guide element with the at least one spring bar, preferably two spring bars, along the guide track then bends the spring bars until they are transferred to the curved guide. This allows for tool-free assembly by simply sliding the guide element onto the mounting element.

[0019] The guide element preferably has a receptacle into which a web of the mounting element is inserted, along which the guide element can be slid. The web can thus have corresponding guide surfaces that are used for guiding.

[0020] In the inventive method for mounting a sliding door to a furniture carcass, at least one running element of the sliding door is first suspended from a track on the furniture carcass, the track being fixed to a top panel of the furniture carcass. The sliding door can then be pivoted around the track, whereby a guide element on the sliding door comes into contact with a guide rail on the furniture carcass via a chamfer and is displaced against the force of at least one spring element relative to a mounting element fixed to the sliding door. The guide element can then be locked onto the guide rail, with the at least one spring element biasing the guide element towards the guide rail in the locked position. This ensures a certain bias of the guide element towards the guide rail in the mounted position, which provides defined contact conditions and prevents rattling noises.According to the invention, the locking of the guide part is achieved by means of a guide roller rotatably mounted on the guide part, which can roll along a guide track on a guide section of the guide rail.

[0021] For effective mounting of the guide element, it can be slid onto the mounting element during assembly and locked into place using at least one spring element. This spring element allows for pre-positioning of the guide element during assembly, enabling it to be slightly shifted from its locked position in the pre-assembled position, thus ensuring it rests against the guide rail with preload in the final mounted position.

[0022] The invention is explained in more detail below with reference to several exemplary embodiments and the accompanying drawings. These show: Figure 1 is a perspective view of a piece of furniture according to the invention; Figure 2 is a detail view of the furniture.Figure 1 in the area of ​​a guide device; Figure 3 a rear view of the two sliding doors of the furniture of the Figure 1 Figure 4: A perspective view of the guide mechanism of the Figure 2 Figures 5A and 5B show two views of a guide part of the guide device; Figures 6A and 6B show two views of the guide part of the Figure 5 during assembly on the mounting element; Figures 7A to 7C several views during assembly of the guide part on the mounting element; Figures 8A and 8B two views during assembly of the guide part on the guide rail; Figure 9 a view of a modified embodiment of a guide part; Figures 10A to 10F several views during assembly of the guide part of the Figure 9 on a mounting element; Figures 11A and 11B show two views of the guide part of the Figure 9 on the mounting element in a locked position, and Figures 12A to 12C show several views of the guide part of the Figure 9on the mounting element in a mounted position.

[0023] A piece of furniture 1, in particular a cabinet, comprises a cabinet body 2 on which two sliding doors 3 and 4 are arranged to move along a front. Each sliding door 3 and 4 includes, in an upper area, one or more running elements 6, in particular with rollers, which move along a track 5. The track 5 is held on a top panel 7 of the cabinet body 2. Instead of two sliding doors 3 and 4, the cabinet body 2 can also have only one or more than two sliding doors 3 and 4.

[0024] The furniture body 2 includes a base 8 to which a guide rail 9 is fixed. The guide rail 9 is part of a guide device 10 for guiding the sliding doors 3 and 4 in a lower area.

[0025] In Figure 2The guide device 10 is shown in detail. The guide rail 9 is fixed to the base 8 and comprises two projecting webs 11, each with a guide section 12. The guide section 12 has a thickened cross-section in the form of a bead, rhombus, triangle, cuboid, or other geometry. A guide roller 14 is rotatably mounted on each guide section 12 and is movable along a guide track on the guide section 12. The guide roller 14 has a profiled cross-section, in particular a concave or convex curve, so that axial movement of the guide roller 14 is prevented. This allows the sliding door 3 or 4 to be guided in a direction perpendicular to the direction of travel via the guide roller 14 and a guide element 15 or 25. The guide element 15 and the guide element 25 each comprise a holder 13, which has a receptacle into which the thickened guide section 12 can be inserted.The holder 13 can be locked onto the guide section 12, thus preventing an unintentional release of a sliding door 3 or 4 from the guide rail 9.

[0026] In the rear sliding door 3, the guide element 15 is fixed to the back of the sliding door 3 via a mounting element 16 and is held so that it can slide vertically. A mounting element 16 is also fixed to the front sliding door 4, to which a guide element 25 is held so that it can slide vertically. This guide element 25 is connected to the holder 13 and the guide roller 14 via an adapter 17. The adapter 17 allows the larger gap between the front sliding door 4 and the guide rail 9 to be bridged, with the function of the guide elements 15 and 25 being otherwise identical.

[0027] In Figure 3The two sliding doors 3 and 4 are shown from a rear view, and it can be seen that two mounting elements 16 are fixed to each sliding door 3 and 4, on which a guide part 15 or 25 is slidably held.

[0028] Figure 4Figure 10 shows the guide assembly with its two guide rollers 14 engaged with a guide section 12 of the guide rail 9. Each guide roller 14 is pre-tensioned towards the guide section 12 by at least one spring element 20. The spring elements 20 press the guide part 15 or 25 downwards in a vertical direction against the weight of the sliding doors 3 and 4, thereby exerting a torque on the guide part 15 or 25, which effectively prevents rattling between the guide part 15 or 25 and the guide rail 9. This results in a defined contact surface for the guide parts 15 and 25 on the guide roller 14, and even when different sections of the guide rail 9 are moving, if it is multi-sectioned, rattling noises can be effectively avoided.

[0029] In the Figures 5A and 5BThe guide element 25 of the front sliding door 4 is shown in detail. The guide element 25 comprises spring elements 20 in the form of two spring bars, each with a contact surface 21 or a drive projection at its end, which can be engaged with the mounting element 16. The guide element 25 also includes pockets 22 that can be attached to hooks 23 on the adapter 17, as well as webs 31 that engage in pockets 32 on the adapter 17 to act as stops in the vertical direction. This ensures that the guide element 25 is correctly positioned on the adapter 17. The adapter 17, made of a metal sheet, also includes a central receptacle 26 into which a web of the mounting element 16 can be inserted. A bracket 30 is formed in the upper region of the adapter 17, which is vertically displaceable relative to a front face of the mounting element 16. Here, the bracket 30 serves as protection for the spring elements 20 during transport and assembly.The adapter 17 further comprises ribs 24 that can be inserted into pockets 19 on the holder 13 to clamp the holder 13 to the adapter 17. In the assembled position, the guide part 25, the adapter 17 and the holder 13 form a unit, which can optionally also be manufactured from fewer or more components.

[0030] In the Figures 6A and 6B The assembly of the guide part 25 on the mounting element 16 is shown. The mounting element 16 comprises a web 27 that can be inserted into the receptacle 26 on the adapter 17 of the guide part 25. A cam guide 28, which has a detent receptacle 29, is also formed on the mounting element 16. The two spring bars of the spring element 20 bear against the cam guide 28 with their contact surface 21, wherein in Figure 6BThe locked position is shown, in which the contact surface 21 is arranged on the locking receptacle 29. In this position, the guide part 25 with the holder 13 protrudes downwards from the underside of the sliding door 4.

[0031] To mount the sliding door on the furniture carcass 2, the sliding door 3 or 4 is first hung on the track 5 at its top via the runners 6. The sliding doors 3 and 4 can then be pivoted around the track 5 so that the guide mechanism 10 engages, with the pivot axis corresponding to the longitudinal direction of the track 5. For this purpose, the guide rollers 14 on the guide element 15 or 25 engage with the guide section 12 of the guide rail 9. During this movement, the guide element 15 or 25 is slightly raised, as shown in Figure 7AAs shown, by lifting the guide part 25, the two spring bars of the spring element 20 move upwards along the curved guide 28, causing the spring bars to spread and preload the guide part 25 downwards. The guide roller 14 therefore rests with a preload force on the guide section 12 of the guide rail 9 (not shown). If the guide part 25 is now moved along the guide rail 9, it may be necessary to shift the guide part 25 along the mounting element 16, for example by slightly tilting the guide rail 9. The guide part 25 is then shifted upwards, as shown in Figure 7BAs shown, by moving the guide part 25 relative to the mounting element 16, the spring bars of the spring element 20 spread open. If the guide part 25 is to be moved downwards again, the spring bars of the spring element 20 press downwards through contact with the cam guide 28, so that a force is applied to the guide roller 14 during the entire guiding movement, regardless of the position of the guide element 25.

[0032] In Figure 7C One mounting position is shown in which the sliding door 4 is placed on a floor. Figure 6BThe guide part 25 is in a latched position in which the spring bars of the spring element 20 rest against the latching receptacle 29. When the sliding door 4 is placed on a floor, the downwardly protruding guide part 25 is designed to prevent damage to either the floor or the guide part 25 itself. Placing the sliding door 4 releases the latching mechanism, and the guide part 25 is pushed upwards against the force of the spring bars of the spring element 20 until the Figure 7C The position shown is reached in which the guide part 25 is aligned with one underside essentially flush with the underside 42 of the sliding door 4. The spring bars of the spring element 20 are in a maximally spread position.

[0033] How especially the Figures 7A to 7CAs shown, the curve 28 is equipped with different inclines or gradients along its course in order to adjust the spring forces and thus also the spring rate according to requirements and situation. Thus, the spring forces are according to the Figures 7A and 7B due to a steeper gradient in the lower part of the curve, 28 higher than those according to the Figure 7C This represents an increase in comfort and safety, since in the working position according to the Figures 7A and 7B higher spring forces are required than in a position according to the Figure 7C , where the sliding door 4 is placed on a floor. However, the spring forces of the in Figure 7C The illustrated working position can be easily adjusted to move the guide part 25 vertically downwards. In the Figures 8A and 8B The assembly of a guide device 10 for the rear sliding door 3 is shown during pivoting. Figure 8AThe sliding door 3 with the holder 13 is located in front of the guide section 12, and a ramp 18 of the holder 13 rests against the guide section 12. By pivoting the sliding door 3 towards the floor 8, the guide part 15 is pushed upwards or moved into a position via the ramps 18 and 33 until the guide section 12 can be inserted into the receptacle on the holder 13, as shown in Figure 8B The holder 13 can surround the guide section 12 in a U-shape and lock onto it to prevent the sliding door 3 from unintentionally detaching from the guide rail 9. When the sliding door 3 is now pushed towards the guide rail 9, the guide section 12 enters the U-shaped recess of the holder 13, and the underside of the guide roller 14 engages with the guide track on the upper side of the guide section 12. During the movement shown in Figure 8A to Figure 8BThe guide part 15 was moved upwards against the force of the spring bars of the spring element 20, so that in the assembled position the guide roller 14 is pre-tensioned towards the guide section 12.

[0034] In Figure 9 A modified embodiment of a guide device is shown, comprising a guide element 25 with spring elements 20 that can be mounted on a modified mounting element 16'. The mounting element 16' includes the downwardly projecting web 27, which can be fixed to the rear of the sliding door 3 or 4. Additionally, the mounting element 16' includes a guide track 40 with a projection 41 between the two curved guides 28, which facilitates the insertion of the guide element 25 or 15. The guide element 25 is designed similarly to the previous embodiment, with a receptacle 26 for inserting the web 27 being slightly wider on the adapter 17'.

[0035] The assembly of the guide part 25 on the modified mounting element 16' is described in the Figures 10A to 10F shown. The guide part 25 can be slid onto the mounting element 16' fixed to the sliding door 4 from above. According to Figure 10A First, the guide element 25 is positioned above the mounting element 16' and then moved downwards so that the upper section of the mounting element 16' enters the receptacle 26, the edge of which is positioned between an edge of the mounting element 16' and the back of the sliding door 4. The guide element 25 can now be moved downwards, as shown in Figure 10B As shown, when the guide part 25 is moved, the spring bars of the spring element 20 with a contact surface 21 enter the guide track 40 on the upper side of the mounting element 16'. The contact surfaces 21 on the spring bars are designed as projections that extend towards the rear of the sliding door 4 and can thus engage in the guide track 40.

[0036] If the guide part 25 is moved further downwards, as shown in Figure 10D As shown, the spring bars of the spring element 20, with their contact surfaces 21, come into contact with the projection 41, which causes the spring bars to spread apart when moved. Figure 10E The spring bars of the spring element 20 are shown in an extended position adjacent to the detent receptacle 29. Due to the movement along the guide track 40, the spring bars with the drive projections, which form the contact surfaces 21, are arranged adjacent to the detent receptacles 29, as shown in Figure 10F as shown. If the guide part 25 is now moved slightly further downwards, the projections of the contact surfaces 21 lock onto the detent receptacle 29.

[0037] The locked position of the guide part 25 on the mounting element 16' is in the Figures 11A and 11BThe spring bars of the spring element 20 were threaded onto the curved guide 28 via the guide track 40 and are now locked onto the detent receptacle 29. In this position, the unit consisting of the sliding door 4, mounting element 16', and guide part 25 can now be mounted on the guide rail 9, as described above. By pivoting the sliding door 4 along the approach ramps 18 and 33, the guide part 25 is moved upwards or brought into position, as shown in the Figures 12A to 12C As shown. By moving the guide part 25, the spring bars are moved and spread along the curved guide 28, thus providing a downward preload to the guide part 25 so that the guide roller 14 rests with preload against the guide section 12 of the guide rail 9.

[0038] In the illustrated embodiment, the guide track 40 for threading the spring bars ends directly at the detent receptacle 29. It is also possible to provide the end of the guide track 40 in a different position in order to make it easier to mount the guide part 25.

[0039] In the illustrated embodiment, two spring bars are provided on each of the guide part 15 or 25, which are slidable along a cam track 28 on the mounting element 16. It is also possible to provide the spring bars on the mounting element 16 or 16' and the cam track 28 on the guide part 15 or 25. Furthermore, the number of spring bars per spring element can be varied, depending on the desired preloading forces of the guide part 15 or 25. Reference symbol list

[0040] 1 Furniture 2 Furniture carcass 3 Sliding door 4 Sliding door 5 Running track 6 Running part 7 Top panel 8 Bottom 9 Guide rail 10 Guide device 11 Web 12 Guide section 13 Holder 14 Guide roller 15 Guide part 16, 16' Mounting element 17, 17' Adapter 18 Lead-in chamfer 19 Pocket 20 Spring element 21 Contact surface 22 Pocket 23 Hook 24 Web 25 Guide part 26 Receptacle 27 Web 28 Curved guide 29 Detent receptacle 30 Bracket 31 Web 32 Pocket 33 Lead-in chamfer 40 Guide track 41 Projection 42 Underside

Claims

1. Furniture (1) with a furniture body (2), on which at least one sliding door (3, 4) is held so as to be displaceable along a running rail (5) held on a top panel (7) of the furniture body (2) via at least one running part (6), wherein the sliding door (3, 4) is hooked to the running rail (5) via the running part (6), wherein the furniture body (2) comprises a bottom (8) on which a guide rail (9) which is fixed, and along which at least one guide part (15, 25) held on the sliding door (3, 4) is displaceable, wherein the guide part (15, 25) is held displaceably on a mounting element (16, 16')which is fixed on the sliding door (3, 4), wherein the guide part (15, 25) is biased relative to the mounting element (16, 16') via at least one spring element (20), characterised in that at least one guide roller (14) is rotatably mounted on the guide part (15, 25) and can be rolled on a guide track on an upper side of a guide section (12) of the guide rail (9), and the guide part (15, 25) is biased downwards in a vertical direction towards the guide rail (9) by means of the at least one spring element (20).

2. Furniture according to claim 1, characterised in that the at least one spring element (20) is integrally formed with the guide part (15, 25) and / or the mounting element (16, 16').

3. Furniture according to claim 1 or 2, characterised in that the at least one spring element (20) comprises a bendable spring web which is movable along a curve guide (28).

4. Furniture according to claim 3, characterised in that the spring element (20) comprises two bendable spring webs, each of which is movable along a curve guide (28) and, when moving along the curve guide (28), is pivotable in opposite directions by displacing the guide part (15, 25) relative to the mounting element (16).

5. Furniture according to claim 3 or 4, characterised in that a latching receptacle (29) for latching a flexible spring web of the spring element (20) is formed on the at least one curve guide (28).

6. Furniture according to one of the preceding claims 3 to 5, characterized in that the at least one spring web of the spring element (20) is formed on the guide part (15, 25) and the at least one curve guide (28) is formed on the mounting element (16, 16').

7. Furniture according to claim 3, characterised in that the at least one curve guide (28) comprises different gradients in its course.

8. Furniture according to one of the preceding claims, characterised in that the guide part (15, 25) can be plugged or pushed onto the mounting element (16, 16') for mounting.

9. Furniture according to one of the preceding claims, characterised in that a guide track (40) for threading at least one spring web of the spring element (20) to a curve guide (28) on the mounting element (16') is formed on the mounting element (16').

10. Furniture according to one of the preceding claims, characterised in that the guide part (15, 25) comprises a receptacle into which a web of the mounting element (16, 16') is inserted, along which the guide part (15, 25) is displaceable.

11. Method for mounting a sliding door (3, 4) on a furniture body (2), comprising the following steps: - hanging at least one running part (6) on a sliding door (3, 4) on a running rail (5) on a furniture body (2) which is held on a top panel (7) of the furniture body (2); - pivoting the sliding door (3, 4) about the running rail (5), a guide part (15, 25) on the sliding door (3, 4) coming into contact with a guide rail (9) fixed to a bottom (8) of the furniture body (2) via at least one run-up slope (18, 33) and being displaced against the force of at least one spring element (20) relative to a mounting element (16, 16') fixed on the sliding door (3, 4), and - latching the guide part (15, 25) to the guide rail (9), wherein the at least one spring element (20) biases the guide part (15, 25) downwards in a vertical direction towards the guide rail (9) by means of the at least one spring element (20), wherein the latching of the guide part (15, 25) is achieved via a guide roller (14) which is rotatably mounted on the guide part (15, 25) and can be rolled on a guide track on a guide section of the guide rail (9).

12. Method according to claim 11, characterised in that the guide part (15, 25) is pushed onto the mounting element (16, 16') during mounting and is latched via the at least one spring element (20).