DEVICE FOR GUIDING A MOVABLE FURNITURE PART

Description

State of the art

[0001] Devices with rails for guiding a movable furniture part are already known, whereby a lowering of the movable furniture part in the open state of the movable furniture part relative to the furniture body is counteracted.

[0002] A device for guiding a movable part of furniture is known from WO 2011 / 066592 A1.

[0003] In known devices, the diameter or material of rolling elements in a carriage, which are moved along the running surfaces of the device's rails, is changed. Purpose and advantages of the invention

[0004] The object of the invention is to provide an improved device for guiding a movable furniture part relative to a furniture body, particularly with regard to a compact and simple design.

[0005] The problem is solved by the characteristics of independent claims.

[0006] Advantageous and appropriate embodiments, variants and further developments of the invention are set out in the dependent claims.

[0007] A first advantageous variant is based on a device for guiding a movable furniture part, in particular a drawer, which can be slidably mounted on a furniture body by means of the device, according to claim 1.

[0008] Preferably, the device is a drawer slide, in particular a partial extension slide. The furniture preferably has two identical devices, one of which is arranged between a side wall of the furniture carcass and another between a side wall of the movable furniture part. Preferably, the carcass rail is attached to the furniture carcass and the drawer slide to the movable furniture part when assembled. Advantageously, the drawer slide, with the movable furniture part mounted on it, is linearly movable relative to the carcass rail, which is fixed to a side wall of the furniture carcass, for example, allowing the drawer slide to be moved relative to the carcass rail in the opening and closing directions.

[0009] Preferably, the movable furniture part rests on a track of the drawer slide, particularly on a surface of the track that is horizontally or at least nearly horizontally oriented when the device is mounted. Preferably, the movable furniture part rests on an upper surface of the track, with rolling elements preferably movable along a lower surface of the track. The upper and lower surfaces are preferably arranged opposite each other on the track and separated from each other by the material thickness of the track. Preferably, the lower surface of the track forms a running surface. Advantageously, rolling elements, such as balls or rollers, are arranged between the lower surface or running surface of the drawer slide and a running surface of the cabinet rail.

[0010] According to the invention, the cabinet rail has a walkway with two running surfaces, wherein the running surfaces are horizontally aligned in the assembled state of the device. Advantageously, one running surface of the cabinet rail is located on a lower surface and one running surface on an upper surface of the walkway, wherein the running surfaces are spaced apart from each other by the thickness of the walkway.

[0011] According to the invention, the drawer slide has two guide rails. In the assembled state of the device, the horizontally oriented guide rail of the cabinet slide is arranged between the guide rails, in particular the horizontally oriented guide rails, of the drawer slide. Preferably, rolling elements are arranged between the guide rail of the cabinet slide and the guide rails of the drawer slide, so that rolling elements can move along both running surfaces of the guide rail of the cabinet slide.

[0012] In the drawer slide, preferably only rolling elements are movable along the lower surface of the upper running surface located above the running surface of the cabinet slide, and only rolling elements are movable along the upper surface of the lower running surface located below the running surface of the cabinet slide, also oriented towards the running surface of the cabinet slide. Preferably, the rolling elements located between the running surface of the cabinet slide and the running surfaces of the drawer slide are arranged on a carriage so that all rolling elements move simultaneously in the opening or closing direction along the running surfaces of the running surfaces of the drawer slide and cabinet slide. It is also conceivable that the rolling elements are arranged on several carriages, whereby, for example, the movement of two or more carriages can be synchronized.

[0013] Advantageously, the running surfaces of the cabinet and drawer slides are continuous. This means, for example, that there are no gaps or cracks in the running surface. This allows the rolling elements to move freely along the entire running surface of the cabinet and drawer slides, ensuring smooth operation of the drawer slide in both opening and closing directions.

[0014] Preferably, the two running surfaces of the drawer slide are flat. Advantageously, the running surface(s) of the drawer slide are horizontally aligned when the device is mounted on the furniture. Preferably, a longitudinal dimension of the running surface runs along the opening and closing direction, and a lateral dimension is oriented perpendicular to the longitudinal dimension, with the longitudinal and lateral dimensions of the running surface preferably lying in the same plane.

[0015] The core of the invention is that the longitudinal extent of the running surface of the cabinet rail is divided into two running sections, wherein the running sections of the running surface merge seamlessly into one another, wherein a plane of a first running section is oriented obliquely with respect to the longitudinal extent relative to a plane of a second running section and is not tilted with respect to the lateral extent.

[0016] The running surfaces of the rails lie in a plane, bounded by four edges, two of which run along a width and two of which run along a length. If the running surface has two running sections, the first and second running sections each lie in a plane, also bounded by four edges, with a fourth edge running inside the running surface, preferably along a width.

[0017] Preferably, the second running section of the cabinet rail's running surface comprises a single plane, with the longitudinal extent of the cabinet rail's plane advantageously aligned parallel to the longitudinal extent of the running surface(s) of the drawer slide. Advantageously, the longitudinal extents of each plane are of equal length and parallel to one another, so that the longitudinal extents of each plane are identical. When the device is mounted on the furniture, the longitudinal extents of the drawer slide's running surfaces, as well as the longitudinal extent of the second running section of the cabinet rail's running surface, are preferably horizontally aligned.

[0018] It is advantageous if the first running section of the cabinet rail's running surface has a single plane. Preferably, the plane of the second running section of the cabinet rail's running surface transitions seamlessly into the plane of the first running section, or the planes are adjacent to each other. The plane of the first running section of the cabinet rail's running surface is preferably oriented obliquely or transversely with respect to its longitudinal extent relative to the plane of the second running section. The longitudinal extent of the plane of the first running section of the cabinet rail's running surface is preferably oriented transversely to both the horizontal and vertical in the device's mounted state on the furniture.Preferably, the longitudinal extent of the plane of the first running section of the running surface of the cabinet rail extends obliquely upwards from the plane of the second running section of the running surface of the cabinet rail towards the running surface of the drawer rail located above the cabinet rail. Preferably, the angle between the longitudinal extent of the first running section of the running surface of the cabinet rail and the longitudinal extent of the second running section of the running surface of the cabinet rail is greater than 170° and less than 180°.

[0019] Furthermore, the width extent of the plane of the first running section of the running surface of the cabinet rail and the width extent of the plane of the second running section of the running surface of the cabinet rail are identical or parallel to each other. Thus, the carriage or the rolling elements in the carriage are advantageously not tilted in their width extent when moving along the running surface of the cabinet rail or along the running sections of the running surface of the cabinet rail.

[0020] Furthermore, the first running section of the cabinet rail's running surface can also have several planes, with at least one plane of the first running section being oriented obliquely to the plane of the second running section with respect to its longitudinal extent. The planes of the first running section of the cabinet rail's running surface preferably transition seamlessly into one another. It is conceivable that the first running section of the cabinet rail's running surface has a curved shape. Preferably, the first running section is designed such that its cross-section along its longitudinal extent is curved. In this case, the first running section has a slope directly after the second running section in the direction of the upper running surface of the drawer slide.In this design, the first running section advantageously ends vertically spaced from the second running section in the direction of the upper running surface of the drawer slide when the device is mounted.

[0021] Preferably, the lateral extents of the different planes of the first running section of the cabinet rail's running surface are aligned parallel to each other or not tilted relative to each other. The longitudinal extents of the different planes of the first running section of the cabinet rail's running surface are, for example, aligned at an angle to each other.

[0022] When the drawer slide is moved in the opening direction, the rolling elements move along the running surface of the cabinet slide, passing from the second running section to the first. When the rolling elements are on the second running section of the cabinet slide's running surface, the running surface of the cabinet slide is advantageously aligned parallel to the running surface of the drawer slide. Preferably, when the rolling elements are on the second running section of the cabinet slide's running surface, the running surfaces of the drawer slide are horizontally aligned in the mounted state of the device on the furniture. When the rolling elements reach the first running section of the cabinet slide's running surface, the running surfaces or the guides of the drawer slide are aligned obliquely upwards relative to the longitudinal extent of the plane of the second running section of the cabinet slide. Thus, the guides of the drawer slide are angled.The drawer slides are aligned perpendicular to the horizontal and vertical. By angling the guide rails when the drawer slide or movable furniture component is open or extended, any sagging of the movable furniture component, especially when fully loaded, can be advantageously compensated for. With standard devices for guiding a movable furniture component, the weight of the component or its contents deflects the component downwards towards the cabinet rail or diagonally to a horizontal position when open. The angled orientation of the drawer slide guide rails allows the weight of the movable furniture component to press or deflect the guide rails or running surfaces into an approximately horizontal position.This allows the movable part of the furniture, especially a heavy movable part, to be closed without much effort, unlike with standard devices.

[0023] Another advantageous variant is based on a device for guiding a movable furniture part, in particular a drawer, which can be slidably mounted on a furniture body by means of the device, according to claim 2.

[0024] Preferably, this variant of the device is a full-extension slide for moving the movable furniture part relative to the furniture carcass. The device comprises a carcass rail, a center rail, and a drawer rail, wherein, when the movable furniture part is moved in the opening and closing directions, both the center rail and the drawer rail move relative to the carcass rail. Furthermore, the drawer rail can preferably also move relative to the center rail during the opening and closing movement of the movable furniture part. The carcass rail is preferably mounted on the furniture carcass, and the movable furniture part is preferably connected to the drawer rail. Preferably, the center rail is arranged between the drawer rail and the carcass rail.

[0025] According to the invention, the cabinet rail has a walkway with two running surfaces, the running surfaces being horizontally aligned in the assembled state of the device. Advantageously, one running surface of the cabinet rail is located on a lower surface and one running surface on an upper surface of the walkway, the running surfaces being spaced apart from each other by the thickness of the walkway. According to the invention, the center rail has two running surfaces. In the assembled state of the device, the horizontally oriented running surface of the cabinet rail is arranged between the running surfaces, in particular the horizontally oriented running surfaces, of the center rail.

[0026] Preferably, rolling elements are arranged between the running surface of the main rail and the running surfaces of the intermediate rail, so that rolling elements are movable along both running surfaces of the main rail's running surface. On the intermediate rail, rolling elements are preferably movable along the lower surface of the upper running surface located above the main rail's running surface, which is oriented towards the main rail's running surface, and rolling elements are preferably movable along the upper surface of the lower running surface located below the main rail's running surface, which is oriented towards the main rail's running surface. The running surfaces of the main rail and intermediate rail are preferably vertically spaced apart in the assembled state of the device, with the vertical distance advantageously determined by the diameter or thickness of the rolling elements.Preferably, the rolling elements, which are arranged between the running surface of the body rail and the running surfaces of the center rail, are arranged on a carriage so that all rolling elements on the carriage are moved simultaneously and together in the opening or closing direction along the running surfaces of the running surfaces.

[0027] The upper running surface, or the running surface of the center rail located above the running surface of the cabinet rail, preferably has two running surfaces, with the upper running surface oriented towards a running surface of the drawer rail. Preferably, additional rolling elements are arranged between the upper running surface of the center rail and the running surface of the drawer rail. Preferably, the rolling elements located between the running surface of the center rail and the cabinet rail are mounted on a carriage, and the rolling elements located between the running surface of the center rail and the running surface of the drawer rail are mounted on a further carriage.

[0028] Preferably, only the longitudinal extent of the running surface of the cabinet rail, only the longitudinal extent of the running surface of the center rail, or the longitudinal extent of the running surface of both the cabinet and center rails can have two running sections. In this case, one plane of the first running section is preferably oriented obliquely relative to the plane of the second running section with respect to its longitudinal extent.

[0029] Advantageously, at least the running surface of the upper running web of the center rail has two running sections, with one plane of the first running section being inclined relative to the plane of the second running section with respect to its longitudinal extent. It is also conceivable that the running surface of the upper running web and the running surface of the lower running web of the center rail each have two running sections, with one plane of the first running section in each case being inclined relative to the plane of the second running section with respect to its longitudinal extent.

[0030] Preferably, the second running section of the running surface of the cabinet rail and / or center rail has a single plane, wherein the longitudinal extent of the plane of the cabinet rail and / or center rail is advantageously aligned parallel to the longitudinal extent of the plane of the running surface(s) of the drawer rail. When the device is mounted on the furniture, the longitudinal extent of the running surfaces of the drawer rail, as well as the longitudinal extent of the plane of the second running section of the running surface of the cabinet rail and / or center rail, are preferably horizontally aligned.

[0031] It is advantageous if the first running section of the running surface of the cabinet rail and / or center rail has a single plane. Preferably, the plane of the second running section of the running surface of the cabinet rail transitions seamlessly into the plane of the first running section of the running surface of the cabinet rail. Furthermore, preferably, the plane of the second running section of the running surface of the center rail transitions seamlessly into the plane of the first running section of the running surface of the center rail.

[0032] Preferably, the plane of the first running section of the running surface of the cabinet rail is oriented obliquely or transversely with respect to its longitudinal extent relative to the plane of the second running section of the running surface of the cabinet rail. Preferably, the plane of the first running section of the running surface of the center rail is oriented obliquely or transversely with respect to its longitudinal extent relative to the plane of the second running section of the running surface of the center rail. The longitudinal extent of the plane of the first running section of the running surface of the cabinet rail and / or center rail is preferably oriented transversely to a horizontal and vertical plane when the device is mounted on the furniture.According to the invention, the longitudinal extent of the plane of the first running section of the running surface of the cabinet rail extends obliquely upwards from the plane of the second running section of the running surface of the cabinet rail towards the running surface of the center rail located above the cabinet rail. Furthermore, the longitudinal extent of the plane of the first running section of the running surface of the center rail extends obliquely upwards from the plane of the second running section of the running surface of the center rail towards the running surface of the drawer rail located above the center rail. For example, the angle between a longitudinal extent of the first running section of the running surface of the center rail and a longitudinal extent of the second running section of the running surface of the center rail is greater than 170° and less than 180°.

[0033] Furthermore, the width extent of the plane of the first running section of the running surface of the center rail and the width extent of the plane of the second running section of the running surface of the center rail are congruent or parallel to each other. Thus, the carriage or the rolling elements in the carriage are advantageously not tilted in their width extent when moving along the running surface of the center rail or along the running sections of the running surface of the center rail.

[0034] Furthermore, the first running section of the running surface of the center rail can also have several planes, wherein at least one plane of the first running section of the running surface of the center rail is oriented obliquely to the plane of the second running section of the running surface of the center rail with respect to its longitudinal extent. The planes of the first running section of the running surface of the center rail preferably transition seamlessly into one another.

[0035] It is conceivable that the first running section of the center rail's running surface has a curved shape. Preferably, the first running section is designed such that its cross-section along its longitudinal extent is curved. The first running section can have a slope directly after the second running section in the direction of the upper running web of the drawer slide, or it can slope along the path of the first running section. In both possibilities, the first running section advantageously ends, in the assembled state of the device, vertically spaced from the second running section in the direction of the upper running web of the drawer slide. Preferably, the widths of the different planes of the first running section of the center rail's running surface are aligned parallel to each other.The longitudinal extensions of the different planes of the first running section of the running surface of the middle rail are, for example, oriented obliquely to each other.

[0036] When the movable furniture part is moved in the opening direction, the center rail is moved relative to the cabinet rail and the drawer rail is moved relative to the cabinet rail and center rail.

[0037] One variant is that only the running surface of the cabinet rail has two running sections, with the longitudinal extent of the plane of the first running section of the cabinet rail's running surface being oriented obliquely or transversely to the longitudinal extent of the plane of the second running section of the cabinet rail's running surface. In this configuration, only in the case of the cabinet rail do the rolling elements, which are arranged between the running surfaces of the center rail and the running surface of the cabinet rail, move from the second running section to the first running section of the cabinet rail. The longitudinal extent of the running surface or the running surfaces of the center rail are preferably only oriented obliquely upwards relative to the longitudinal extent of the second running section of the cabinet rail when the rolling elements reach the first running section of the cabinet rail's running surface. The oblique orientation of the running surface of the center rail preferably also aligns the running surface or the running surface of the center rail with the first running section of the cabinet rail.The running surface of the drawer slide is angled. This is advantageously done just before the movable furniture part reaches its fully open position, as only then do the rolling elements, which are arranged between the running surfaces of the center rail and the running surface of the cabinet rail, reach the first section of the cabinet rail's running surface. The angled position of the drawer slide advantageously compensates for any sagging of the movable furniture part or of the drawer slide's running surface on which the movable furniture part rests.

[0038] In the case where only the running surface of the center rail has two running sections, the longitudinal extent of the plane of the first running section of the center rail is oriented obliquely or transversely to the longitudinal extent of the plane of the second running section of the center rail. During the opening movement of the movable furniture part, the longitudinal extent of the second running section of the center rail remains parallel to the longitudinal extent of the running surface of the cabinet rail. When the rolling elements, which are arranged between the running surface of the drawer slide and the upper running surface of the center rail, move from the second running section to the first running section of the center rail, the longitudinal extent of the running surface of the drawer slide is oriented obliquely upwards relative to the longitudinal extent of the second running section of the center rail. This preferably occurs only shortly before the movable furniture part reaches the fully open position.

[0039] Another possibility is that both the running surface of the cabinet rail and the running surface of the center rail each have two running sections. When the movable furniture part moves in the opening direction, the rolling elements located between the running surfaces of the center rail and the running surface of the cabinet rail contact the first running section of the cabinet rail's running surface, and the rolling elements located between the upper running surface of the center rail and the running surface of the drawer rail contact the first running section of the upper running surface of the center rail. Advantageously, the longitudinal extent of the second running section of the center rail's running surfaces is oriented obliquely relative to the second running section of the cabinet rail, with the longitudinal extent of the first running section of the center rail being obliquely aligned with the longitudinal extent of the second running section of the center rail.Furthermore, the running surface of the drawer slide is preferably aligned obliquely relative to the longitudinal extent of the plane of the second running section of the center rail, wherein the longitudinal extent of the plane of the second running section of the center rail is already aligned obliquely relative to the longitudinal extent of the plane of the second running section of the cabinet rail. This results in the running surface of the drawer slide being aligned at a steeper angle than if only one rail had two running sections.

[0040] An advantage is that the entire longitudinal extent of the running surface has exactly two running sections.

[0041] Preferably, the running surface of the cabinet rail and / or center rail comprises exactly two running sections, wherein preferably the plane of the first and the plane of the second running section each have a longitudinal extent. The longitudinal extent of the planes of the first running section and the longitudinal extent of the plane of the second running section together preferably form the entire longitudinal extent of the running surface. Furthermore, the first running section can have several planes, each having a longitudinal extent; then the sum of the longitudinal extents of the planes of the first running section forms the longitudinal extent of the first running section.

[0042] It is also advantageous that the longitudinal extension of the first and second running sections each have a starting point and an end point, wherein the starting point of the longitudinal extension of the second running section and the end point of the longitudinal extension of the first running section are each formed on an end-side edge of the running surface.

[0043] Preferably, the entire longitudinal extent of the running surface extends from the starting point of the longitudinal extent of the second running section to the end point of the longitudinal extent of the first running section. When the cabinet rail is mounted to the furniture carcass in the assembled state, the starting point of the longitudinal extent of the second running section is preferably located towards the rear wall of the furniture carcass, and the end point of the first longitudinal extent is located at the opening of the furniture carcass or at a front area of ​​the side wall of the furniture carcass. Preferably, when the movable furniture part is closed, the end point of the longitudinal extent of the second running section of the cabinet rail is located near a front of the movable furniture part. Since the center rail is movable relative to the cabinet rail, the end points and starting points of the longitudinal extent of the center rail are shifted.The starting point of the longitudinal extension of the second running section of the middle rail is arranged at an end end on the running surface in the closing direction, and the end point of the longitudinal extension of the first running section of the middle rail is arranged at an end end on the running surface in the opening direction.

[0044] With the device mounted on the furniture and in the closed state of the movable furniture part, the starting point of the longitudinal extension of the second running section of the middle rail is also aligned in the direction of the back wall of the furniture body.

[0045] Advantageously, the endpoint of the longitudinal extent of the second running section corresponds to the starting point of the longitudinal extent of the first running section.

[0046] Advantageously, the endpoint of the longitudinal extent of the second running section or the starting point of the longitudinal extent of the first running section is located within the running surface. Preferably, the endpoint of the longitudinal extent of the second running section or the starting point of the longitudinal extent of the first running section is located more than 60%, preferably more than 70%, more than 80%, or more than 90% away from the starting point of the longitudinal extent of the second running section.

[0047] It is also advantageous that, in the assembled state of the device, the first running section is formed at a front end area of ​​the rail in the opening direction of the drawer rail.

[0048] Preferably, the front end of the cabinet rail is aligned towards the opening of the cabinet body when the device is mounted on the furniture. When the movable part of the furniture is closed, the front end of the cabinet rail is positioned close to the front of the movable part.

[0049] Furthermore, the front end of the center rail is preferably aligned towards the opening of the furniture body when the movable furniture part is closed. The front end of the center rail is also aligned towards the movable furniture part, and when the movable furniture part is closed, the front end of the center rail is positioned near the front of the movable furniture part, particularly the front of a drawer. As the movable furniture part opens, the relative movement between the drawer slide and the center rail causes the front end of the center rail to move further and further away from the front of the movable furniture part.

[0050] An advantage is that the longitudinal extent of the second running section of the rail extends over 60% to 90% of the total longitudinal extent of the running surface of the rail.

[0051] Advantageously, the longitudinal extent of the second running section extends over 60%, over 65%, over 70%, over 75%, over 80%, over 85% of the total longitudinal extent of the running surface of the body rail and / or center rail.

[0052] Preferably, the longitudinal extent of the second running section extends from the starting point of the second running section to the end point of the second running section, wherein the starting point of the second running section begins at a rear end edge of the running surface.

[0053] The rear end edge of the running surface, where the starting point of the second running section is located, is preferably positioned on the cabinet rail in a middle to rear area of ​​the side wall of the furniture carcass when the device is mounted on the furniture. The rear end edge of the cabinet rail is preferably aligned towards the rear wall of the furniture carcass and perpendicular to the direction of movement of the center rail and / or drawer slide.

[0054] In the case of the center rail, the rear end edge of the running surface, where the starting point of the second running section is located, is positioned at the rear of the side wall of the furniture carcass when the movable furniture part is closed. This rear area of ​​the side wall is connected to the back wall of the furniture carcass. During the opening movement of the movable furniture part, the rear end edge of the running surface of the center rail is moved along the carcass rail, so that when the movable furniture part is fully open, the rear end edge of the running surface of the center rail is preferably positioned in the middle of the running surface of the carcass rail.

[0055] Another advantageous possibility arises from the fact that the longitudinal extent of the first running section of the rail extends over 10% to 40% of the total longitudinal extent of the running surface of the rail.

[0056] Advantageously, the longitudinal extent of the first running section extends over 10%, over 15%, over 20%, over 25%, over 30%, over 35% of the total longitudinal extent of the running surface of the body rail and / or center rail.

[0057] Preferably, the longitudinal extent of the first running section extends from the starting point of the first running section to the end point of the first running section, wherein the end point of the first running section is located at a front end edge of the running surface.

[0058] The front end edge of the running surface, on which the end point of the first running section is arranged, is preferably located on a front area of ​​the side wall of the furniture body in the mounted state of the device on the furniture in the case of the cabinet rail, wherein the front area of ​​the side wall of the furniture body is oriented towards the opening of the furniture body.

[0059] In the case of the center rail, the front end edge of the running surface, which marks the endpoint of the first running section, is positioned above the front end edge of the running surface of the cabinet rail when the movable furniture part is closed. During the opening movement of the movable furniture part, the front end edge of the running surface of the center rail is moved along the cabinet rail, so that when the movable furniture part is fully open, the front end edge of the running surface of the center rail preferably comes to rest in the middle area of ​​the running surface of the drawer rail or is spaced apart from the running surface of the cabinet rail.

[0060] It is also advantageous that, in the assembled state of the device, the longitudinal extent of the second running section is horizontally aligned.

[0061] In its assembled state, the cabinet rail is connected to a side panel of the furniture carcass, with the running surface or the longitudinal extents of the rail's running surfaces aligned horizontally. For rails where the running surfaces have two running sections, advantageously only the longitudinal extent of the second running section is aligned horizontally. The longitudinal extent of the first running section of the two-section rail is preferably, in its assembled state, oriented at an angle to the horizontal and vertical.

[0062] Advantageously, in the assembled state of the device, the endpoint of the longitudinal extent of the first running section and the endpoint of the longitudinal extent of the second running section are vertically spaced apart from each other.

[0063] The vertical distance or height difference between the endpoint of the longitudinal extent of the second running section and the endpoint of the longitudinal extent of the first running section is preferably 0.2-2 mm. . The endpoint of the longitudinal extension of the first running section is advantageously located closer to the direction of the movable furniture part than the endpoint of the longitudinal extension of the second running section.

[0064] The vertical distance or height difference between the starting point and the end point of the longitudinal extension of the first running section is preferably 0.2 to 2 mm.

[0065] Preferably, the height difference is achieved by angling the plane of the first running section relative to the plane of the second running section, thereby counteracting a lowering of the movable furniture part when the movable furniture part is open.

[0066] An advantageous embodiment of the invention is a piece of furniture with a movable furniture part which can be moved relative to the furniture body in the opening and closing direction by means of a device according to one of the previously described embodiments. Character description

[0067] Further features and advantages of the invention are explained in more detail with reference to an exemplary embodiment shown schematically in the figures.

[0068] In detail: Figure 1 shows a piece of furniture in perspective from a slanted top view with a drawer in the fully open position on a furniture body, wherein the drawer is movable in the opening and closing direction by the device according to the invention; Figure 2 shows an exploded view of a device according to the invention; Figure 3 shows a sectional view from the front of the device according to the invention. Figure 2 Figure 4 shows a perspective view from an oblique angle above onto a cabinet rail according to Figure 2Figure 5 shows a perspective view obliquely from the front of a cabinet rail according to Figure 3 Figure 6 shows a perspective side view from an oblique angle of above of a device according to Figure 2 in the closed state, Figure 7 shows a perspective side view from an oblique angle of above of a device according to Figure 6 in the half-extended state, Figure 8 shows a perspective side view from an oblique angle of a device according to Figures 6 and 7 in the fully open state.

[0069] In the Figure 1Figure 1 shows a piece of furniture 1 with a furniture body 2 and a drawer 3 movable relative to the furniture body 2. The drawer 3 is movable relative to the furniture body 2 in the opening direction P1 and closing direction P2 by means of the device 4 according to the invention, such as a drawer slide. The furniture body 2 has a base 5, a top panel 6, a back panel 7, and two side panels 8, 9. The device 4 is preferably attached to the side panels 8, 9 of the furniture body 2. Preferably, the device 4, which is designed as a full extension, has a body rail 10, a center rail 11, and a drawer slide 12 (see Figure 4). Fig. 2 ), wherein the cabinet rail 10 is mounted on the side wall 8, 9 of the furniture cabinet 2 by a device 4.

[0070] Advantageously, a cabinet rail 10 is attached to each side wall 8, 9 of the furniture carcass 2, the cabinet rails 10 preferably being arranged symmetrically on the side walls 8, 9 of the furniture carcass 2. Furthermore, the drawer 3 is preferably detachably connected to the drawer rail 12. The drawer 3 preferably has a drawer base 13, drawer side walls 14, 15, a drawer front 16 and a drawer back wall 17, the drawer base 13 preferably resting on the drawer rail 12.

[0071] The device according to the invention is in Figure 2 shown, wherein the cabinet rail 10 has a walkway 18. Above and below the walkway 18 of the cabinet rail 10, walkways 19, 20 of the center rail 11 are preferably arranged (see figure). Fig. 3Rolling elements 21 are arranged between the lower running surface 19 of the center rail 11 and the running surface 18 of the cabinet rail 10. The rolling elements 21 can move along the running surface 22 of the lower running surface 19 of the center rail 11 and the lower running surface 23 of the running surface 18 of the cabinet rail 10 during the movement of the center rail 11 relative to the cabinet rail 10 or during the opening or closing movement of the drawer 3. Preferably, further rolling elements 24 are arranged between the running surface 18 of the cabinet rail 10 and the upper running surface 20 of the center rail 11, wherein the rolling elements 24 can move along the upper running surface 25 of the running surface 18 of the cabinet rail 10 and the running surface 26 of the upper running surface 20 of the center rail 11.

[0072] The rolling elements 21, 24 are arranged, for example, in a carriage 27, wherein the carriage 27 preferably has an upper row with the rolling elements 24 and a lower row with the rolling elements 21. The running surface 18 of the body rail 10 is preferably arranged between the two rows of rolling elements. Furthermore, the carriage 27 has rolling elements 28 on its sides, wherein the rolling elements 28 are moved along the side running surfaces 29 of the body rail 10 and / or the side running surfaces 39 of the central rail 11, so that the carriage 27 can be moved along the running surfaces 18, 19, 20 and / or the side running surfaces 29, 39 of the central rail 11 and body rail 10, respectively. An additional engagement element 30 is provided on the carriage 27, which interacts with a synchronization wheel 31 on the center rail 11.The synchronization wheel 31 is rotatably mounted on the center rail 11, and the synchronization wheel 31 also interacts with an engagement contour 32 on a second carriage 33. By engaging the engagement element 30 of the carriage 27 and the engagement contour 32 on the second carriage 33, the movement of the center rail 11 and the drawer rail 12 in the opening and closing directions P1, P2, for example, can be synchronized.

[0073] The second carriage 33 comprises a series of rolling elements 34, the rolling elements 34 being arranged between the upper running surface 20 of the center rail 11 and a running surface 35 of the drawer rail 12. The rolling elements 34 can move along an upper running surface 36 of the upper running surface 20 of the center rail 12 and a running surface 37 of the running surface 35 of the drawer rail 12. The drawer 3, with its drawer base 13, preferably rests on the upper surface of the running surface 35 of the drawer rail 12. The second carriage 33 preferably further comprises lateral support bodies 38, the lateral support bodies 38 being arranged, for example, between the side running surfaces 39 of the center rail 11 and the side running surfaces 40 of the drawer rail 12. The carriage 33, for example, is also moved in a supporting manner along the running surfaces 36, 37 or the side running surfaces 39, 40 of the center rail 11 and the drawer rail 12.

[0074] In the Figure 4 and 5 The cabinet rail 10 is shown in different views. The cabinet rail 10 is, for example, designed as a single-piece bent sheet metal part. The cabinet rail 10 comprises a mounting strip 41, a base plate 42, the side guide 29, and the guide 18. The cabinet rail 10 can be attached to the side wall 8, 9 of the cabinet 2 by means of fasteners such as screws using the mounting strip 41. The base plate 42, the side guide 29, and the guide 18 preferably form a U-shape, with the base plate 42 connecting the mounting strip 41 and the side guide 29. The U-shape is preferably open towards the mounting strip 41. The side guide 29 preferably connects the guide 18 and the base plate 42.

[0075] As in Figure 4 and 5The running surface 25 of the cabinet rail 10 advantageously has two running sections 43, 44. The running sections 43, 44 preferably each form a plane, wherein the planes of the running sections 43, 44 have a longitudinal extent L1, L2 and a lateral extent.

[0076] The longitudinal extent L1 of a first running section 43 extends from a starting point 45 to an end point 46, the end point 46 preferably terminating at a front end edge 47 of the running surface 25 of the cabinet rail 10. The longitudinal extent L2 of a second running section 44 extends from a starting point 48 to an end point 49, the starting point 48 beginning at a rear end edge 50 of the running surface 25 of the cabinet rail 10. When the cabinet rail 10 is mounted, the front end edge 47 of the running surface 25 of the cabinet rail 10 is located on the side wall 8, 9 of the cabinet 2 in the vicinity of the opening 52 of the cabinet 2. With a closed drawer 3, the front end edge 47 of the running surface 25 of the cabinet rail 10 is located in the rear area of ​​the drawer front 16.

[0077] Since the first running section 43 transitions seamlessly into the second running section 44, for example the endpoint 49 of the longitudinal extent L2 of the second running section 44 corresponds to the starting point 45 of the longitudinal extent L1 of the first running section 43.

[0078] Preferably, the longitudinal extent L1 of the plane of the first running section 43 is inclined relative to the longitudinal extent L2 of the plane of the second running section 44. The lateral extents of the planes of the first and second running sections 43, 44 are perpendicular to the longitudinal extent of the planes of the first and second running sections 43, 44, with the lateral extent of the first running section 43 being parallel to the lateral extent of the second running section 44. The lateral extents of the two running sections 43, 44 are preferably not tilted relative to each other. The angle α between the longitudinal extent of the first running section and the longitudinal extent of the second running section is preferably less than 180° and greater than 170°.

[0079] The longitudinal extent L2 of the plane of the second running section 44 is, in the mounted state of the cabinet rail 10 on the side wall 8,9 of the furniture body 2 is preferably horizontally oriented, wherein the longitudinal extent L1 of the plane of the first running section 43 is oriented transversely to a horizontal or vertical plane. The endpoint 46 of the longitudinal extent L1 of the first running section 43 and the endpoint 49 of the longitudinal extent L2 of the second running section 44 are advantageously vertically separated from each other or have a height difference (see figure). Fig. 5 This height difference advantageously helps to compensate for the lowering of the drawer 3 when open. The total longitudinal extent of the running surface 25 comprises the longitudinal extent L1 of the first running section 43 and the longitudinal extent L2 of the second running section 44, wherein the longitudinal extent L1 of the first running section 43 is 10% to 40% of the total longitudinal extent of the running surface 25 of the cabinet rail 10.

[0080] In the Figures 6 to 8The device 4 is shown in its different states during the movement of the drawer 3 in the opening direction. Figure 6 is the closed state, in Figure 7 half-extended state and in Figure 8 The fully extended or fully opened state is shown. In the Figures 6 to 8 Only the body rail 10 has two running sections 43, 44.

[0081] When drawer 3 is closed, the 3 rails 10, 11, 12 lie on top of each other (see. Fig. 6), wherein preferably a rear end of the running surfaces 22, 26, 36, 37 of the center rail 11 and the drawer rail 12 extends beyond the second running section 44 of the running surface 25 of the cabinet rail 10. When the cabinet rail 10 is mounted on the side wall 8, 9 of the furniture carcass 2, the rear ends of the running surfaces 22, 26, 36, 37 of the center rail 11 and the drawer rail 12 are located, for example, in the vicinity of the rear wall 7 of the furniture carcass 2. The first running section 43 of the running surface 25 of the cabinet rail 10 is preferably arranged in the vicinity of the opening 52 of the furniture carcass 2 when mounted, and when the drawer 3 is closed, the front ends of the running surfaces 22, 26, 36, 37 of the drawer rail 12 and the center rail 11 are also preferably arranged in the vicinity of the opening 52 of the furniture carcass 2.Since, in the assembled state, the upper surface of the drawer rail 12 is connected, for example, to the drawer bottom 13, the front end of the running surface 35 of the drawer rail 12, and thus also of the running surface 37 of the drawer rail 12, preferably rests against the drawer front 16 and the rear end of the running surface 35 of the drawer rail 12 rests against the drawer back wall 17 during the opening and closing movement of the drawer 3.

[0082] When the drawer 3 is closed, the carriages 27, 33 are arranged, for example, centrally on the rails 10, 11, 12 or running surfaces 22, 23, 25, 26, 36, 37 of the rails 10, 11, 12. Thus, the carriage 27, in which the rolling elements 21, 24 are arranged between the running surface 18 of the cabinet rail 10 and the running surfaces 19, 20 of the center rail 11, is preferably located on the second running section 44 of the running surface 25 of the cabinet rail 10. The longitudinal extents of the running surfaces 19, 20, 35 or the running surfaces 22, 26, 36, 37 of the center rail 11 and drawer rail 12 are therefore preferably aligned parallel to the longitudinal extent L2 of the second running section 44 of the cabinet rail 10.This means that, in the mounted state of the cabinet rail 10 on the side wall 8, 9 of the furniture carcass 2, the longitudinal extensions of the running surfaces 22, 26, 36, 37 of the middle rail 11 and drawer rail 12, as well as the longitudinal extension L2 of the second running section 44 of the cabinet rail 10 are preferably horizontally aligned.

[0083] If drawer 3 is now moved from a closed position in the opening direction P1, for example the center rail 11 is moved relative to the cabinet rail 10 and the drawer rail 12 is moved relative to the center rail 11 and cabinet rail 10 (see figure). Fig. 7The carriages 27, 33 are moved along the running surfaces 22, 23, 25, 26, 36, 37 of the rails 10, 11, 12, with the carriage 27, in which the rolling elements 21, 24 are arranged between the running surface 18 of the body rail 10 and the running surfaces 19, 20 of the center rail 11, hardly moving in the opening direction P1. This means that preferably the carriage 27 also moves in the half-extended state (see Figure 1). Fig. 7The carriage 33, in which the rolling elements 34 are arranged between the running surface 20 of the center rail 11 and the running surface 35 of the drawer rail 12, is located approximately halfway along the running surface 20 of the center rail 11 and approximately in the front half of the running surface 18 of the center rail 10 when half-extended. Preferably, the front half of the running surface 18 of the center rail 10 is the half of the running surface 18 that is oriented towards the opening 52 of the furniture carcass 2.

[0084] During the further opening movement of the drawer 3 or the center rail 11 and drawer rail 12 in the opening direction P1, the carriage 27, during the relative movement between the center rail 11 and the cabinet rail 10, reaches the rear end of the center rail 11. A stop (not shown) for the carriage 27 is provided at the rear end of a side guide 39 of the center rail 11, so that the carriage 27 can be moved at the rear end of the center rail 11 by means of this stop in the opening direction P1. The carriage 27 preferably comes to rest against a stop 51 (see figure). Fig. 4 ) at the front end of the body rail 10, so that the carriage 27 cannot be moved further in the opening direction P1.

[0085] The carriage 33 is also preferably moved towards the rear end of the drawer rail 12 during the relative movement between the center rail 11 and the drawer rail 12. For example, a stop (not shown) for the carriage 33 is provided at the rear end of a side guide 40 of the drawer rail 12, so that the carriage 33 can be moved in the opening direction P1 by the stop at the rear end of the drawer rail 11.

[0086] The carriage 27 or the rolling elements 24 are located when the drawer 3 is fully open (see Fig. 8) preferably between the stop 51 of the body rail 10 and the boundary of the center rail 11, so that the rolling elements 24 are now on the first running section 43 of the body rail 10. This preferably aligns the carriage 27 and thus also the longitudinal extent of the running surface of the center rail 11 obliquely upwards or obliquely to a horizontal or vertical plane. That is, the longitudinal extent of the running surface 22, 26, 36 of the center rail 11 is obliquely aligned relative to the longitudinal extent L2 of the second running section 44 of the body rail 10. By angling the running surfaces 22, 26, 36 of the center rail 11, the running surface 37 of the drawer rail 12 is also oriented obliquely upwards, whereby the longitudinal extent of the running surface 22, 26, 36 of the center rail 11 and the longitudinal extent of the running surface 37 of the drawer rail 12 run approximately parallel. Reference symbol list

[0087] 1 Furniture 2 Furniture carcass 3 Drawer 4 Device 5 Base 6 Top panel 7 Back panel 8 Side panel 9 Side panel 10 Carcass rail 11 Center rail 12 Drawer rail 13 Drawer base 14 Drawer side panel 15 Drawer side panel 16 Drawer front 17 Drawer back panel 18 Running board 19 Running board 20 Running board 21 Rolling element 22 Running surface 23 Running surface 24 Rolling element 25 Running surfaces 26 Running surfaces 27 Carriage 28 Rolling element 29 Side running board 30 Engagement element 31 Synchronization wheel 32 Engagement contour 33 Carriage 34 Rolling element 35 Running board 36 Running surface 37 Running surface 38 Support body 39 Side running board 40 Side running board 41 Mounting rail 42 Bottom panel 43 Running section 44 Running section 45 Starting point 46 Ending point 47 Edge 48 Starting point 49 Ending point 50 Edge 51 Stop 52 Opening

Claims

1. Device (4) for guiding a movable furniture part, in particular a drawer (3), which can be displaceably received on a furniture carcass (2) by means of the device, wherein the device (4) comprises a carcass rail (10) and a drawer rail (12), wherein the carcass rail (10) can be arranged on the furniture carcass (2), wherein the displaceably mounted drawer rail (12) is movable relative to the carcass rail (10) in an opening direction and closing direction, wherein the carcass rail has a running web with two running surfaces, wherein the running surfaces are aligned horizontally in the mounted state of the device, wherein the drawer rail has two running webs, wherein the running web of the carcass rail, which is aligned horizontally in the mounted state of the device, is arranged between the running webs of the drawer rail, wherein the carcass rail (10) and the drawer rail (12) in each case have at least one planar running surface (23, 25, 37), wherein the running surface (37) of the drawer rail (12) is continuously uniformly planar, wherein, during the relative movement between the drawer rail (12) and the carcass rail (10), load-transferring rolling elements (21, 24, 34) are movable along the running surface (23, 25, 37) of the carcass rail (10) and the drawer rail (12), wherein the running surface (23, 25, 37) extends in a longitudinal extent and width extent, wherein the longitudinal extent is perpendicular to the width extent, wherein the longitudinal extent of the running surface (23, 25, 37) is aligned in the opening and closing direction of the drawer rail (12), characterized in that the longitudinal extent of the running surface (25) of the carcass rail (10) is divided into two running portions (43, 44), wherein the running portions (43, 44) of the running surface (25) merge steplessly into each other, wherein a plane of a first running portion (43) relative to the one plane of a second running portion (44) is aligned obliquely with respect to the longitudinal extent and is not tilted with respect to the width extent, wherein the first running portion directly after the second running portion has a gradient in the direction of the upper running web of the drawer rail, wherein, when the drawer rail moves in the opening direction, the rolling elements are moved along the running surface of the carcass rail, with the rolling elements passing from the second running portion to the first running portion.

2. Device (4) for guiding a movable furniture part, in particular a drawer (3), which can be displaceably received on a furniture carcass (2) by means of the device (4), wherein the device (4) comprises a carcass rail (10), a drawer rail (12) and a central rail (11), wherein the central rail (11) is arranged between the carcass rail (10) and the drawer rail (12), wherein the carcass rail (10) can be arranged on the furniture carcass (2), wherein the displaceably mounted drawer rail (12) and the central rail (11) are movable relative to the carcass rail (10) in an opening direction and closing direction, wherein the carcass rail has a running web with two running surfaces, wherein the running surfaces are aligned horizontally in the mounted state of the device, wherein the central rail has two running webs, wherein the running web of the carcass rail, which is aligned horizontally in the mounted state of the device, is arranged between the running webs of the central rail, wherein the carcass rail (10), the central rail (11) and the drawer rail (12) in each case have at least one planar running surface (22, 23, 25, 26, 36, 37), wherein the running surface (37) of the drawer rail (12) is continuously uniformly planar, wherein, during the movement of the drawer rail (12) and / or the central rail (11) relative to the carcass rail (10), load-transferring rolling elements (21, 24, 34) are movable along the running surfaces (22, 23, 25, 26, 36, 37) of the rails (10, 11, 12), wherein the running surface (22, 23, 25, 26, 36, 37) extends in a longitudinal extent and width extent, wherein the longitudinal extent is perpendicular to the width extent, wherein the longitudinal extent of the running surface (22, 23, 25, 26, 36, 37) of the rails (10, 11, 12) is aligned in the opening and closing direction of the drawer rail (12), characterized in that the longitudinal extent of the running surface (25, 36) of the carcass rail (10) and / or the central rail (11) is divided into two running portions (43, 44), wherein the running portions (43, 44) of the running surfaces (25, 36) merge steplessly into each other, wherein a plane of a first running portion (43) relative to the one plane of a second running portion (44) is aligned obliquely with respect to the longitudinal extent and is not tilted with respect to the width extent, wherein the longitudinal extent of the plane of the first running portion of the running surface of the carcass rail runs obliquely upwards from the plane of the second running portion of the running surface of the carcass rail in the direction of the running surface of the central rail located above the carcass rail, and / or the longitudinal extent of the plane of the first running portion of the running surface of the central rail runs obliquely upwards from the plane of the second running portion of the running surface of the central rail in the direction of the running surface of the drawer rail located above the central rail.

3. Device for guiding a movable furniture part according to either of the preceding claims, characterized in that the entire longitudinal extent of the running surface (25, 36) has exactly two running portions (43, 44).

4. Device for guiding a movable furniture part according to any one of the preceding claims, characterized in that a longitudinal extent of the first and second running portions (43, 44) in each case has a starting point (45, 48) and an end point (46, 49), wherein the starting point (48) of the second running portion (44) and the end point (46) of the first running portion (43) are formed on an end-side edge (47, 50) of the running surface (25).

5. Device for guiding a movable furniture part according to any one of the preceding claims, characterized in that the end point (49) of the longitudinal extent of the second running portion (44) corresponds to the starting point (45) of the longitudinal extent of the first running portion (43).

6. Device for guiding a movable furniture part according to any one of the preceding claims, characterized in that, in the mounted state of the device (4), the first running portion (43) is formed on a frontside end region of the rail (10, 11) in the opening direction of the drawer rail (12).

7. Device for guiding a movable furniture part according to any one of the preceding claims, characterized in that the longitudinal extent of the second running portion (44) of the rail (10, 11) extends over 60-90% of the total longitudinal extent of the running surface (25) of the rail (10, 11).

8. Device for guiding a movable furniture part according to any one of the preceding claims, characterized in that the longitudinal extent of the first running portion (43) of the rail (10, 11) extends over 10-40% of the total longitudinal extent of the running surface (25) of the rail (10, 11).

9. Device for guiding a movable furniture part according to any one of the preceding claims, characterized in that, in the mounted state of the device (4), the longitudinal extent of the second running portion (44) is aligned horizontally.

10. Device for guiding a movable furniture part according to any one of the preceding claims, characterized in that, in the mounted state of the device (4), the end point (46) of the longitudinal extent of the first running portion (43) and the end point (49) of the longitudinal extent of the second running portion (44) are vertically spaced apart from each other.

11. Item of furniture (1) having a movable furniture part (3) which can be moved relative to the furniture carcass (2) in the opening direction and closing direction by a device according to any one of the preceding claims.