Rail system for pull-out guidance

Abstract

The invention relates to a rail system (1) for pull-out guidance, in particular for underfloor guidance, of a drawer (100), comprising a basic-structure rail (2) for fitting on a basic furniture structure (201), comprising a drawer rail (6) for fitting on a drawer (100) and comprising a front adapter (7) for directly or indirectly fastening a front drawer panel (101) on the drawer rail (6), wherein the drawer rail (6) is mounted in an axially movable manner in relation to the basic-structure rail (2) and can be transferred along a pulling-out direction (A) from a retracted position into a pulled-out position, wherein the front adapter (7) has a depth-adjustment element (9) for adjusting an axial distance (X) of the front adapter (7) from the basic-structure rail (7) in the retracted position.

Description

[0001] Anton Schneider GmbH & Co KG

[0002] P0545-PCT

[0003] 1

[0004] P0545-PCT / 605-fs 12.11.2025 Rail system for drawer guidance

[0005] The invention relates to a rail system for guiding the extension, in particular for underfloor guidance, of a drawer, comprising a cabinet rail for mounting on a furniture carcass, a drawer rail for mounting on a drawer, and a front adapter for the direct or indirect attachment of a drawer front to the drawer rail, wherein the drawer rail is axially movable relative to the cabinet rail and can be moved along an extension direction from a retracted position to an extended position. Further aspects of the invention include a piece of furniture with a furniture carcass and at least one drawer, as well as methods for adjusting the axial position of a drawer front of a drawer of a piece of furniture, in particular for converting from a front extension to an internal extension or from an internal extension to a front extension.

[0006] The invention is used in a rail system for guiding the extension of a drawer, enabling the drawer to be pulled out of a piece of furniture. For this purpose, such rail systems comprise a cabinet rail and a drawer rail. The cabinet rail is used to mount the rail system to the cabinet body of the furniture, while the drawer rail is mounted to the drawer itself.

[0007] To allow the drawer to be pulled out using the rail system located between the drawer and the cabinet body, the drawer slide is mounted to allow axial movement relative to the cabinet rail. This allows the drawer slide, along with the drawer, to move from a retracted position, in which the drawer slide cannot be moved further axially towards the cabinet rail, to an extended position, in which the drawer slide is moved axially away from the cabinet rail. In the extended position, the interior of the drawer, connected to the drawer slide, is accessible from the outside.

[0008] A drawer typically consists of a drawer bottom, two opposing side drawer sides, a drawer back, and a drawer front.

[0009] To mount the drawer to the drawer runner of the rail system, the runner has a front adapter. When mounted, this adapter is positioned at the end of the drawer runner facing the drawer front, i.e., the end furthest from the cabinet runner. The drawer, including the drawer front, is attached to this front adapter. This can be done indirectly, for example, via a locking clip mounted on the drawer, which engages the front adapter to secure the drawer to the rail system, as is the case with a solid wood drawer. Alternatively, a direct attachment is possible, as demonstrated by Anton Schneider GmbH & Co KG.

[0010] P0545-PCT

[0011] 2

[0012] This is the case with a box drawer. With an under-mount runner, the drawer slide is not attached to the outside or top of one of the drawer sides, but rather to the underside of the drawer or to the inside of the side that projects downwards beyond the drawer bottom. Furthermore, a pin may be provided on the drawer slide or on the front adapter, which engages in the underside of a side or elsewhere in the drawer.

[0013] During the installation of the rail system and the drawer, inaccuracies can occur, resulting in the drawer being either inserted too deeply or not deeply enough into the furniture. The drawer front may then be positioned so flush against the furniture carcass that the drawer rail cannot reach its fully retracted position, or it may protrude too far from the furniture carcass, causing it to be incorrectly positioned relative to the fronts of other drawers or doors in the furniture. In particular, it may protrude too far or be inserted too deeply into the carcass. Depth adjustment is necessary to compensate for such installation inaccuracies once the furniture is assembled.

[0014] The drawers known to date provide for this purpose by allowing the drawer's position relative to the rail system to be changed. In addition to lateral and height adjustment mechanisms, the locking clips of such drawers have a depth adjustment mechanism that allows the drawer's relative position to be set in relation to the drawer rail.

[0015] Such depth adjustment devices have proven disadvantageous because they require the use of locking clips. Due to their design, these cannot be used with box drawers, which have thin-walled sides made of thin sheet metal and separately mountable and dismountable drawer fronts. Since the drawer front of such box drawers is attached to the drawer slide, changing the position of the drawer, and especially the drawer front, relative to the slide system using a locking clip is impossible anyway.

[0016] The object of the present invention is therefore to specify a depth setting which can be used equally for solid wood drawers and box drawers.

[0017] This task is solved in a device of the type mentioned above by the fact that the front adapter has a depth adjustment element for setting an axial distance of the front adapter to the cabinet rail in the retracted position.

[0018] The depth adjustment element allows the axial distance of the front adapter to the cabinet rail to be adjusted in the retracted position, without requiring any change to the drawer's position relative to the drawer runner. The axial distance is the distance, measured along the extension direction, between the front of the front adapter (as it extends) and the cabinet rail, specifically a stop on the cabinet rail that limits movement in the opposite direction. Adjusting the axial distance of the front adapter to the cabinet rail also allows for adjustment of the distance to a drawer front attached directly or indirectly to the drawer runner. Anton Schneider GmbH & Co KG

[0019] P0545-PCT

[0020] 3

[0021] In this way, the depth adjustment can be used with the front adapter, which includes a depth adjustment element, for both solid wood drawers and box drawers. Furthermore, the depth adjustment element, particularly in conjunction with a box drawer, allows for conversion from a front pull-out, where the drawer front is located outside the furniture carcass when retracted, to an internal pull-out, where the drawer front is located inside the furniture carcass when retracted and can be concealed by a front pull-out or a door. Specifically, the rail system with a front adapter featuring a depth adjustment element enables conversion from a front pull-out to an internal pull-out without requiring any changes to the mounting position, particularly the fixing depth, of the cabinet rail within the furniture carcass, thus preventing installation errors.This is particularly relevant when the front panel does not exceed a predetermined thickness of a few millimeters. Furthermore, the depth adjustment element allows the cabinet rail to be pre-installed, and the depth adjustment element can be used to determine whether the drawer is designed as a front pull-out or an internal pull-out.

[0022] According to one design, at least one intermediate rail can be arranged between the cabinet rail and the drawer slide. The drawer slide can be mounted to allow axial movement relative to the intermediate rail, and the intermediate rail can be mounted to allow axial movement relative to the cabinet rail. In this way, the drawer slide can be mounted to allow axial movement relative to the cabinet rail indirectly via the intermediate rail. The cabinet rail, intermediate rail, and drawer slide can thus interact telescopically to enable full extension.

[0023] Preferably, the drawer slide, the cabinet slide and / or the intermediate slide are made of solid metal, in particular a sheet metal.

[0024] Preferably, the front adapter is made of plastic. A front adapter made of plastic allows for cost-effective manufacturing of the rail system.

[0025] In a further development of the invention, the front adapter and the depth adjustment element have complementary interfaces for connecting the depth adjustment element to the front adapter, particularly without tools. The front adapter can be retrofitted with a depth adjustment element by means of these complementary mechanical interfaces. The rail system, especially the front adapter, can also be used without a depth adjustment element. This retrofit can be carried out in a material-saving and environmentally friendly manner, since a retrofittable front adapter does not need to be replaced with a new front adapter that already has a depth adjustment function. For tool-free connection, the interfaces can be designed such that the depth adjustment element can be slid onto the front adapter and / or locked into place with the front adapter.The depth adjustment element can be slid onto the front adapter from the underside of the drawer slide facing the cabinet rail. Anton Schneider GmbH & Co KG.

[0026] P0545-PCT

[0027] 4

[0028] Furthermore, the front adapter may be designed to have multiple interfaces for connecting the depth adjustment element. This allows the depth adjustment element to be connected to the front adapter at several points. A first interface of the front adapter may be for surface-mounted drawer fronts, and a second interface may be for inward-mounted drawer fronts.

[0029] In an advantageous embodiment, the depth adjustment element supports the drawer slide in the retracted position relative to the cabinet rail; in particular, the depth adjustment element rests against the cabinet rail in the retracted position. With a depth adjustment element that supports the drawer slide in the retracted position relative to the cabinet rail, the distance between the front adapter and the cabinet rail can be easily adjusted by changing the relative position of the drawer slide to the cabinet rail in the retracted position. Because the depth adjustment element rests against the cabinet rail in the retracted position, the need for a separate counter-stop as a separate component to be mounted on the cabinet rail can be eliminated, thus saving components.

[0030] For example, a roller bearing of a support roller of the cabinet rail, which serves for the axially movable support of the drawer slide, can form a counter stop inherent to the cabinet rail, against which the depth adjustment element rests in the retracted position of the rail system.

[0031] In an advantageous embodiment, the depth adjustment element includes a spacer element that is axially movable along an adjustment axis for adjusting the axial distance between the front adapter and the cabinet rail in the retracted position. The axial distance can be adjusted intuitively along the extension direction using this spacer element. The adjustment axis can run parallel to the extension direction of the rail system. The spacer element can be operated manually, in particular, to adjust the axial distance.

[0032] Preferably, the depth adjustment element includes a bearing element. The spacer element can be mounted in the bearing element, in particular by means of a pivot bearing. To adjust the axial distance of the front adapter to the cabinet rail in the retracted position, the position of the spacer element relative to the bearing element of the depth adjustment element can be changed. Alternatively or additionally, the bearing element can have an interface for connecting the depth adjustment element to the front adapter.

[0033] According to its design, the spacer element has a stop that rests against the cabinet rail in the retracted position. This stop allows the spacer element to support the front adapter and the drawer slide against the cabinet rail in the retracted position. The stop against the cabinet rail ensures that the spacer element reliably maintains the axial distance in the retracted position. Anton Schneider GmbH & Co KG

[0034] P0545-PCT

[0035] 5

[0036] In alternative designs, the depth adjustment element can be located on the cabinet rail and the stop on the front adapter.

[0037] Preferably, the stop is positioned relative to the front of the front adapter, offset against the direction of extension.

[0038] In a further embodiment, the spacer element can be an actuating element, in particular a locking rail, a worm gear or an eccentric.

[0039] In a further embodiment, the spacer element is adjustable by rotation around the adjustment axis, particularly in the manner of an adjusting screw. A spacer element adjustable by rotation around the adjustment axis can enable precise and easy-to-use adjustment. The spacer element, adjustable in the manner of an adjusting screw, can have a bearing section for mounting within the bearing element, which is provided with a thread. The spacer element can be designed in the manner of a knurled screw. In particular, the bearing section can have an M5 thread.

[0040] The spacer element can be mounted directly in the front adapter. For example, a threaded hole for an adjusting screw can be provided directly in the front adapter. The adjusting screw can be pre-installed or subsequently installed in the threaded hole.

[0041] Preferably, the spacer element has an actuating section by which it can be rotated about the adjustment axis without tools. The actuating section can allow for simple manual adjustment of the spacer element. In particular, the actuating section can have a diameter of at least 10 mm.

[0042] It is further preferred if the spacer element, in particular the stop, is designed such that it can be moved relative to the front adapter in the retracted position against the direction of extension, thereby increasing the axial distance of the front adapter to the cabinet rail. In this way, the axial distance of the front adapter, positioned on the drawer rail, to the cabinet rail can be increased by moving the spacer element relative to the front adapter against the direction of extension.

[0043] Furthermore, it can be advantageous if the spacer element, in particular the stop, projects into a gap that is bounded transversely to the extension direction by the cabinet rail and the drawer runner. By projecting into the gap bounded diametrically by the cabinet rail and drawer runner, the spacer element can support the drawer runner against the cabinet rail there. By supporting, and in particular pressing against, the spacer element in the gap, a larger installation space can be occupied by the spacer element, as it can also occupy part of the gap. By being able to occupy a larger installation space, the spacer element can provide a larger adjustment range, i.e., the range of values ​​between the smallest and the largest adjustable axial distance of the front adapter to the cabinet rail. The adjustment range can be at least 3.5 mm, preferably at least 4 mm. Anton Schneider GmbH & Co KG

[0044] P0545-PCT

[0045] 6

[0046] According to a structurally advantageous embodiment, the spacer element projects into the gap from above when the rail system is installed. In this way, the spacer element can be positioned below the drawer slide and above the cabinet slide when installed. Particularly in the case of an underfloor installation, this area of ​​the gap can be larger relative to the lateral area, allowing the spacer element to occupy more space and therefore be mechanically more robust. The thrust force that the spacer element must absorb when the drawer reaches its retracted position can be absorbed by such a robustly designed spacer element. Preferably, a counter-stop of the cabinet slide, which interacts with the depth adjustment element, extends towards the drawer slide.The counter-stop extending towards the drawer runner can easily interact with the stop extending towards the cabinet runner. The spacer element, in particular the stop itself, can rest against the counter-stop to limit the relative movement of the drawer runner to the cabinet runner in the opposite direction of extension, thus defining the axial distance of the front adapter to the cabinet runner in the retracted position.

[0047] It may be designed so that the counter stop is positioned relative to the front of the cabinet rail, offset against the direction of extension.

[0048] Preferably, the counter-stop projects into the gap into which the spacer element projects in its retracted position. The counter-stop can project into the gap from a side opposite the side from which the stop projects into the gap.

[0049] In an advantageous embodiment, the rail system includes a damping element arranged between the front adapter and the cabinet rail to dampen an impact when the drawer reaches its retracted position. The impact that occurs when the drawer slide decelerates upon reaching the retracted position, particularly when the spacer element strikes a stop, can thus be dampened to protect the material. The damping element can comprise a compressible soft component, in particular felt; a resilient material spring, in particular elastic foam, elastic rubber, or elastic plastic; a spring element, in particular a leaf spring or a helical compression spring; and / or a spring-loaded element.

[0050] In this context, it has proven particularly advantageous if the spacer element, especially the stop, incorporates the damping element. By having the damping element integrated into the spacer element, the shock can be dampened at the shock source without propagating through other components of the rail system connected to the spacer element. The damping element can be spring-loaded, particularly in the direction of the counter-stop, especially by a suitably oriented material spring or spring element. Anton Schneider GmbH & Co KG

[0051] P0545-PCT

[0052] 7

[0053] Alternatively or additionally, a damping element can be arranged on the counter stop of the cabinet rail.

[0054] For a piece of furniture of the type mentioned above, it is proposed, to solve the aforementioned problem, that the rail system be designed in the manner described above and connected to the furniture carcass in such a way that the drawer slide of the at least one rail system is connected to the drawer and the carcass slide of the at least one rail system is connected to the furniture carcass. In this way, the advantages described in connection with the rail system are achieved.

[0055] The features described in connection with the inventive rail system can also be applied individually or in combination to the furniture. The same advantages result as already described.

[0056] In a method of the type mentioned above, it is proposed to solve the aforementioned problem that the furniture is designed in the manner described above and that the depth adjustment element for adjusting the axial distance of the front adapter to the carcass rail is actuated in the retracted position in such a way that the drawer front of the drawer assumes a predetermined axial distance along the extension direction to the front of the furniture carcass in the retracted position.

[0057] The depth adjustment element allows the axial distance of the front adapter to the cabinet rail to be adjusted in the retracted position, either in or against the extension direction, without requiring any change to the drawer's position relative to the drawer rail. By adjusting the axial distance of the front adapter to the cabinet rail, the distance of a drawer front indirectly attached to the front adapter can also be set to a predetermined axial distance along the extension direction from the front of the cabinet. In this way, the depth adjustment element of the front adapter can be used for both solid wood drawers and box drawers.

[0058] The features described in connection with the inventive rail system can also be applied individually or in combination to the process. The same advantages arise as already described.

[0059] Preferably, the axial distance of the front adapter to the cabinet rail, in particular to a counter-stop limiting the movement of the cabinet rail against the extension direction, is reduced in the retracted position by means of the depth adjustment element such that a drawer front directly or indirectly connected to the front adapter is transferred from a front extension position, in which the drawer front lies outside the cabinet carcass in the retracted position of the rail system, to an inward extension position, in which the drawer front lies, in particular completely, inside the cabinet carcass in the retracted position of the rail system. This relocation of the drawer front with the depth adjustment element, especially in conjunction with a box drawer, enables a conversion by Anton Schneider GmbH & Co KG

[0060] P0545-PCT

[0061] 8

[0062] A transition can be achieved from a front pull-out, in which the drawer front is located outside a furniture carcass in the retracted position, to an inner pull-out, in which the drawer front is located inside the furniture carcass in the retracted position and can be concealed by the front of another drawer or a door.

[0063] Similarly, by increasing the axial distance of the front adapter to the cabinet rail in the retracted position using the depth adjustment element, a conversion from an internal pull-out to a front pull-out can be carried out.

[0064] Preferably, the conversion is carried out without changing the mounting position, in particular the fixing depth, of the drawer slide within the furniture carcass. The slide system, with its front adapter and depth adjustment element, can offer such a large adjustment range for changing the axial position of the drawer front relative to the furniture carcass that the mounting position of the drawer slide within the furniture carcass does not need to be changed to convert from a front pull-out to an internal pull-out and / or from an internal pull-out to a front pull-out. This allows for a sufficient change in the position of the drawer front when the slide system is retracted. The same hole pattern can be used for mounting the drawer slide within the furniture carcass for both front pull-outs and internal pull-outs. This simplifies furniture manufacturing, as the drawer slide can be attached to the furniture carcass identically for both front pull-outs and internal pull-outs.Furthermore, assembly errors can be avoided, as holes with an incorrect hole pattern cannot be used when assembling the rail system.

[0065] When converting from a front-mounted drawer to an inset drawer, the drawer front can be replaced with a shorter drawer front (perpendicular to the drawer's extension direction) before adjusting the depth adjustment element. This allows for conversion from a front-mounted to an inset drawer even if the previous drawer front would otherwise abut the cabinet body when moved inwards.

[0066] The following section explains embodiments, further developments, and examples of the invention in more detail with reference to the accompanying drawings. The figures show:

[0067] Fig. 1 schematic representations of the rail system according to the invention in the retracted position with two differently set distances of the front adapter to the cabinet rail, Fig. 2 a perspective detail view of the front adapter and the depth adjustment element and

[0068] Fig. 3 shows a schematic sectional view of a piece of furniture according to the invention with several drawers.

[0069] Figure 1 shows a rail system 1 for guiding the extension of a drawer 100. Anton Schneider GmbH & Co KG

[0070] P0545-PCT

[0071] 9

[0072] The rail system 1 comprises a cabinet rail 2, with which the rail system 1 can be mounted on a furniture carcass 201. The cabinet rail 2 is designed as a metal profile rail, whereby in Figs. 1a and 1b only a part of the profile of the cabinet rail 2 is shown in order not to obscure the other components of the rail system 1.

[0073] The cabinet rail 2 also includes one or more support rollers 4 and / or cage rollers, of which only one is shown in each of Figs. 1a and 1b. These support rollers 4 serve to axially support a drawer slide 6 of the rail system 1 relative to the cabinet rail 2. They are aligned such that the drawer slide 6 can be moved axially from the retracted position shown in Fig. 1 along the extension direction A to an extended position. In this way, the drawer slide 6 and the cabinet rail 2 enable a drawer 100, which can be mounted on the drawer slide 6, to be pulled out.

[0074] At least one additional intermediate rail can be arranged between the cabinet rail 2 and the drawer rail 6. This intermediate rail enables full extension of a drawer 100 connected to the rail system 1. For the sake of clarity and to better understand the function of the depth adjustment of the rail system 1, no intermediate rail is shown.

[0075] On the front side, a front adapter 7 is arranged on the drawer slide 6, which is also designed as a metal profile rail. A drawer front 101 can be attached to the drawer slide 6 directly or indirectly via this front adapter 7. The front adapter 7 is manufactured as an injection-molded plastic part.

[0076] A depth adjustment element 9 is arranged on the front adapter 7. This depth adjustment element 9 allows the axial distance X between the front adapter 7 and the cabinet rail 2 to be adjusted in the retracted position of the rail system 1 shown.

[0077] To allow the adjustment of the axial distance X, the depth adjustment element 9 is designed in multiple parts.

[0078] Firstly, it comprises a bearing element 10. The bearing element 10 is detachably arranged on the front adapter 7. For this purpose, the front adapter 7 has a first mechanical interface 8 and the bearing element 10 a second mechanical interface 11, which are connected to each other in Fig. 1 and therefore not visible from the outside. Of these, interface 8 can be seen in Fig. 2. This interface 8 and interface 11 are designed to be complementary to each other, such that the bearing element 10 can be attached to the front adapter 7 from below, i.e., from the side of the front adapter 7 facing the cabinet rail, and can lock into place to secure the depth adjustment element 9 to the front adapter 7.In this way, it is possible to retrofit a rail system featuring the front adapter 7 shown, which can also be used to pull out a drawer 100 without the depth adjustment element 9, with a depth adjustment by attaching the depth adjustment element 9 to the front adapter 7. Anton Schneider GmbH & Co KG.

[0079] P0545-PCT

[0080] 10

[0081] In addition to the bearing element 10, the depth adjustment element 9 comprises a spacer element 12. The spacer element 12 is movably mounted relative to the bearing element 10. In the illustrated embodiment, the spacer element 12 is designed in the manner of a knurled screw. It has a bearing section 15 which is provided with an external thread.

[0082] For the purpose of supporting the spacer element 12, the bearing element 10 has a through bore with an internal thread extending along an adjustment axis E, in which the bearing section 15 is partially supported.

[0083] By rotating the spacer element 12 around the adjustment axis E, which runs parallel to the extension direction A, the spacer element 12 can now be moved axially relative to the bearing element 10. Depending on the direction of rotation, the bearing section 15 is either screwed into or out of the bearing element 10.

[0084] To make manual adjustment of the spacer element 12 as easy as possible, it features the actuating section 14 shown in Fig. 2. This section is characterized by a larger diameter compared to the bearing section 15. Furthermore, its circumferential surface is provided with knurling, which facilitates better handling.

[0085] By changing the relative position of the bearing element 10 and the spacer element 12 to each other, the depth adjustment element 9, and thus also the axial distance X between the front adapter 7 and the cabinet rail 2, is adjusted in the retracted position. The spacer element 12 has a stop 13 diametrically opposite the bearing section 15. This stop 13 abuts the cabinet rail 2 when the retracted position is reached, thus limiting the range of movement of the drawer rail 2 and the front adapter 7 attached to it in the opposite direction of extension A.

[0086] The stop 13 interacts with a counter-stop 3 of the cabinet rail 6 to determine the axial distance X between the front adapter 7 and the cabinet rail 2. In the illustrated embodiment, this counter-stop 3 is formed by a side of a roller bearing 5 of the support roller 4 facing the spacer element 12. This roller bearing 5 simultaneously protects the support roller 4 from external influences along or against the extension direction A.

[0087] Even when using an intermediate rail, the counter stop 3 would be formed by the body rail 2.

[0088] As can be seen in Fig.1, the axial distance X of the front adapter 7 to the cabinet rail 2 is measured between the front of the front adapter 7 pointing away from the cabinet rail 2 in the extension direction A and the counter stop 3 of the cabinet rail 6 which limits the movement of the cabinet rail 6 against the extension direction A.

[0089] As shown in Fig. 2, the spacer element 12 also has a damping element 16. This damping element 16 is made of an elastic foam and / or rubber and / or plastic, so that it acts as a material spring to absorb the impact when it strikes the counter-stop 3. Anton Schneider GmbH & Co KG

[0090] P0545-PCT

[0091] 11

[0092] The damping element 16 can dampen the impact. It serves in particular to prevent an impact of a hard material such as metal or hard plastic against metal or another hard material, thus minimizing noise. The side of the damping element 16 facing the counter-stop 3 forms the stop 13 of the spacer element 12.

[0093] Both the spacer element 12 and the counter stop 3 project into the gap 17 between the drawer slide 6 and the cabinet slide 2, as shown in Fig. 1. The impact occurring when the stop 13 strikes the counter stop 3 upon reaching the retracted position thus takes place in a plane located below the drawer slide 6 on the cabinet slide side.

[0094] The space 17 provides a comparatively large installation area below, i.e., on the cabinet rail side, the front adapter 7, both along the extension direction A and perpendicular to it. Therefore, compared to other, more fragile adjustment devices, the depth adjustment element 9 can be designed to be mechanically more stable by utilizing this larger installation space. Consequently, the depth adjustment element 9 can withstand greater impact forces without damage and can also be used for applications with higher thrust weights.

[0095] Furthermore, the larger installation space provided by the gap 17 allows for a larger adjustment range of the spacer element 12. Beyond compensating for assembly inaccuracies, the rail system 1 can therefore also be used to convert from a front pull-out to an internal pull-out or from an internal pull-out to a front pull-out.

[0096] Figures 1a and 1b show the two extreme positions of the adjustment range of the spacer element 12. However, the spacer element 12 can also be adjusted to any relative position to the bearing element 10 between these two extreme positions due to its screw-like mounting in the bearing element 10.

[0097] In Fig. 1a, the spacer element 12 is unscrewed as far as possible from the bearing element 10. In the retracted position of the rail system 1, the stop 13 rests against the counter stop 3 of the cabinet rail 2. The axial distance X between the front adapter 7 and the cabinet rail 2 assumes the largest value adjustable with the depth adjustment element 9. The rail system 1, adjusted in this way, can be used to mount a drawer 100 in a front extension position, in which the drawer front 101 lies outside the cabinet when the rail system 1 is retracted.

[0098] In order to finely adjust the distance between the drawer front 101 of a drawer 100 mounted in the front extension position and the front of a furniture carcass 201 connected to the carcass rail 2 and to compensate for assembly errors, the axial distance X can be further adjusted by actuating the spacer element 12.

[0099] In Fig. 1b, the spacer element 12 is screwed into the bearing element 10 to its maximum extent. Even in this setting of the spacer element 12, the stop 13 rests against the counter stop 3 of the cabinet rail 2 in the retracted position of the rail system 1. The axial distance Anton Schneider GmbH & Co KG

[0100] P0545-PCT

[0101] 12

[0102] The dimension X between the front adapter 7 and the cabinet rail 2 assumes the smallest value adjustable with the depth adjustment element 9. The rail system 1 set in this way can be used to mount a drawer 100 in an inset position, in which the drawer front 101 lies within the cabinet body in the retracted position of the rail system 1.

[0103] In addition, the depth adjustment element 9 can be used to adjust the position of the front panel 101 in the extension direction A, both for front panels 101 outside and for front panels 101 inside the furniture carcass 201.

[0104] Figure 3 shows a schematic, non-scale sectional view of a piece of furniture 200 according to the invention. The furniture 200 comprises a cabinet 201 and two drawers 100. An upper drawer 100 is mounted at an upper mounting position on the cabinet 201, and a lower drawer 100 is mounted at a lower mounting position on the cabinet 201. Each drawer 100 is extended from the cabinet 201 by means of two rail systems 1. Due to the sectional view, only one rail system 1 per drawer 100 is visible. The rail systems 1 are shown in their respective extended positions.

[0105] The rail systems 1 are designed for underfloor guidance, so that the drawer slides 6 are mounted below the respective drawer bottoms 104 on the drawers 100. For differently constructed drawers 100, especially box drawers, the drawer slides 6 for underfloor guidance can also be mounted within the drawer sides 102, particularly essentially at the level of the drawer bottoms 104.

[0106] The drawer front 101 opposite the drawer back 103 is attached to the drawer rail 6 either directly or indirectly via the front adapter 7.

[0107] The upper drawer 100 of the furniture 200 shown is designed as an internal extension. The drawer 100 is mounted in the previously described internal extension position by means of the upper rail system 1. The depth adjustment element 9 is adjusted as shown in Fig. 1b. In the retracted position of the rail system 1, the drawer front 101 of the upper drawer 100 is thus located within the furniture carcass 201.

[0108] The lower drawer 100 of the furniture 200 shown is designed as a front pull-out. The drawer 100 is mounted in the previously described front pull-out position by means of the lower rail system 1. The depth adjustment element 9 is adjusted as shown in Fig. 1a. In the retracted position of the rail system 1, the drawer front 101 of the lower drawer 100 rests against the furniture carcass 201 outside of it or has a small gap from it.

[0109] To ensure that the inner drawer also closes off the furniture in the retracted position and achieves a homogeneous appearance, the drawer front 101 of the lower drawer 100 extends beyond the height of the drawer front 101 of the upper drawer 100. Anton Schneider GmbH & Co KG

[0110] P0545-PCT

[0111] 13

[0112] The cabinet rails 2 are mounted in the cabinet body 201. For this purpose, the cabinet body has a hole pattern 18 which corresponds to a hole pattern of the cabinet rail 2, so that the cabinet rail 2 can be screwed to the cabinet body 201 using the hole pattern 18.

[0113] Since the axial distance X of the front adapter 7 to the cabinet rail 2 in the retracted position is adjusted via the depth adjustment element 9, and since the adjustment range of the depth adjustment element 9 is such that it extends from the internal pull-out position to the front pull-out position, the cabinet rails 2 of all rail systems 1 can be mounted in the furniture carcass 201 in the same mounting positions and, in particular, at the same mounting depths to the front of the furniture carcass 201, from which the drawers 100 can be pulled out. The furniture 200 can thus be manufactured more easily, as the cabinet rail 2 can be attached to the furniture carcass 201 identically for both front pull-out and internal pull-out. With rail system 1, the cabinet rail 2 can be mounted identically regardless of whether a drawer 100 is to be installed as an internal pull-out or a front pull-out.Therefore, the same hole pattern 18 can be used for mounting both an internal drawer and a front drawer in the furniture carcass 201. This prevents assembly errors caused by mounting the carcass rail 2 using the wrong hole pattern 18 in an incorrect mounting position.

[0114] Furthermore, the depth adjustment element 9 allows for a later conversion from a front pull-out to an inner pull-out or from an inner pull-out to a front pull-out by adjusting the spacer element 12 accordingly, without having to change the mounting position of the carcass rail 2 or detach it from the furniture carcass 201.

[0115] With the aid of the rail system 1 described above, the furniture 200, and the method, it is possible to use depth adjustment in the same way for solid wood drawers and box drawers, which in particular allows for conversion from a front pull-out to an internal pull-out or vice versa. Anton Schneider GmbH & Co KG

[0116] P0545-PCT 14 REFERENCE MARK LIST

[0117] 1 rail system

[0118] 2 cabinet rails

[0119] 3 Counterattack

[0120] 4 support rollers

[0121] 5 roller bearings

[0122] 6 drawer slides

[0123] 7 Front adapters

[0124] 8 Interface

[0125] 9 Depth adjustment element

[0126] 10 bearing element

[0127] 11 Interface

[0128] 12 spacer elements

[0129] 13 attacks

[0130] 14 Actuation section

[0131] 15 storage section

[0132] 16 damping element

[0133] 17 spaces

[0134] 18-hole pattern

[0135] 100 drawers

[0136] 101 drawer front

[0137] 102 drawer frame

[0138] 103 Drawer back Anton Schneider GmbH & Co KG

[0139] P0545-PCT 15 104 Drawer base

[0140] 200 pieces of furniture

[0141] 201 Furniture carcass

[0142] A Extraction direction

[0143] E adjustment axis

[0144] X Axial distance

Claims

Anton Schneider GmbH & Co KG P0545-PCT 16 Patent claims 1. Rail system (1) for guiding the extension, in particular for underfloor guidance, of a drawer (100) comprising a cabinet rail (2) for mounting on a furniture carcass (201), a drawer rail (6) for mounting on a drawer (100) and a front adapter (7) for the indirect or direct attachment of a drawer front (101) to the drawer rail (6), wherein the drawer rail (6) is axially movable relative to the cabinet rail (2) and can be moved along an extension direction (A) from a retracted position to an extended position, characterized by that the front adapter (7) has a depth adjustment element (9) for adjusting an axial distance (X) of the front adapter (7) to the cabinet rail (2) in the retracted position.

2. Rail system (1) according to claim 1, characterized in that the front adapter (7) and the depth adjustment element (9) have complementary interfaces (8, 11) for connecting the depth adjustment element (9) to the front adapter (7), in particular without tools.

3. Rail system (1) according to claim 1 or 2, characterized in that the depth adjustment element (9) supports the drawer slide (6) in the retracted position relative to the cabinet rail (2), in particular by bearing against the cabinet rail (2).

4. Rail system (1) according to any of the preceding claims, characterized in that the depth adjustment element (9) has a spacer element (12) axially movable along an adjustment axis (E) for adjusting the axial distance (X) of the front adapter (7) to the cabinet rail (2) in the retracted position.

5. Rail system (1) according to claim 4, characterized in that the spacer element (12) has a stop (13) with which the spacer element (12) rests against the body rail (2) in the retracted position.

6. Rail system (1) according to one of claims 4 or 5, characterized in that the spacer element (12) is adjustable by rotation about the adjustment axis (E), in particular in the manner of an adjusting screw.

7. Rail system (1) according to one of claims 4 to 6, characterized in that the spacer element (12), in particular the stop (13), is designed such that it is movable against the extension direction (A) to increase the axial distance (X) relative to the front adapter (7). Anton Schneider GmbH & Co KG P0545-PCT 17 8. Rail system (1) according to one of claims 4 to 7, characterized in that the spacer element (12), in particular the stop (13), projects into an intermediate space (17) which is bounded transversely to the extension direction (A) by the body rail (2) and the drawer rail (6).

9. Rail system (1) according to one of the preceding claims, characterized in that a counter stop (3) of the body rail (2) which cooperates with the depth adjustment element (9) extends in the direction of the drawer rail (6).

10. Rail system (1) according to one of the preceding claims, characterized by a damping element (16) arranged between the front adapter (7) and the body rail (2) for damping an impact when reaching the retracted position.

11. Rail system (1) according to claims 4 and 10, characterized in that the spacer element (12), in particular the stop (13), has the damping element (16).

12. Furniture (200) comprising a furniture carcass (201) and at least one drawer (100), wherein the drawer (100) is connected to the furniture carcass (201) via at least one rail system (1) according to any one of claims 1 to 11 such that the drawer rail (6) of the at least one rail system (1) is connected to the drawer (100) and the carcass rail (2) of the at least one rail system (1) is connected to the furniture carcass (201). 13.Method for adjusting the axial position of a drawer front (101) of a drawer (100) of a piece of furniture (200) according to claim 12, in particular for converting from a front extension to an inner extension or from an inner extension to a front extension, wherein the depth adjustment element (9) is actuated in the retracted position to adjust the axial distance (X) of the front adapter (7) to the cabinet rail (2) such that the drawer front (101) of the drawer (100) in the retracted position assumes a predetermined axial distance along the extension direction (A) to the front of the cabinet body (201).

14. Method according to claim 13, characterized in that the axial distance (X) of the front adapter (7) to the cabinet rail (2) in the retracted position is reduced by means of the depth adjustment element (9) such that a drawer front (101) directly or indirectly connected to the front adapter (7) is transferred from a front extension position, in which the drawer front (101) is located outside the furniture cabinet (201) in the retracted position of the rail system (1), to an inner extension position, in which the drawer front (101) is located inside the furniture cabinet (201) in the retracted position of the rail system (1).

15. Method according to claim 14, characterized in that the conversion is carried out without changing the mounting position, in particular the fastening depth, of the body rail (2) in the furniture body (201).

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