Pull-out guide with synchronous movement of the rails via a flexible deflection element

Abstract

The invention relates to a pull-out guide (1) comprising: a guide rail (2) which can be mounted on a furniture body via a mounting piece (6); a running rail (4) which is to be attached to a drawer and is mounted so as to be movable relative to the guide rail (2); a middle rail (3) which is mounted so as to be movable between the guide rail (2) and the running rail (4); a first and second bearing (35) with a first and second deflection roller (5) around which a flexible deflection element (50) is guided, wherein the bearings (35) are arranged at a front and rear end region of the middle rail (3), wherein at least two coupling elements (10, 20) are fixedly connected to the flexible deflection element (50), and at least one stationary first coupling element (10) is fixedly connected to the guide rail (2) and at least one second coupling element (20) is fixedly connected to the running rail (4) and can be moved together with said running rail, wherein the middle rail (3) has, in a cross-section perpendicular to the longitudinal direction, a portion having two downwardly-extending protrusions (52, 53), and the first and the second deflection rollers (5) are arranged between the two downwardly-extending protrusions (52, 53).

Description

[0001] Drawer guide with synchronous movement of the rails via a flexible deflection element

[0002] The present invention relates to a pull-out guide, comprising a guide rail which can be mounted on a furniture carcass via a mounting web, a running rail which is to be fastened to a drawer and which is mounted such that it can move relative to the guide rail, a middle rail which is mounted such that it can move between the guide rail and the running rail, a first and second bearing with a first and second deflection roller around which a flexible deflection element is guided, wherein the bearings are arranged at a front and rear end region of the middle rail, wherein at least two coupling elements are firmly connected to the flexible deflection element, and at least one stationary first coupling element is firmly connected to the guide rail and at least one second coupling element is firmly connected to the running rail and is movable together with the latter.

[0003] DE 10 2020 121 282 A1 discloses a pull-out guide with a stationary guide rail, a center rail, and a movable running rail, wherein the movement of the center rail is synchronized via a flexible deflection element. For this purpose, the flexible deflection element is connected to a rolling element cage for rolling elements between the center rail and the running rail, as well as to another rolling element cage for rolling elements between the center rail and the guide rail. This allows the movement of the rolling element cages to be used to move the center rail at half speed relative to the running rail. While the fixation to the rolling element cages results in a compact design, slippage can occur between the contact surface of the rolling elements on the rails and the rolling elements or the rolling element cages. This can lead to synchronization problems, particularly under shock loads.

[0004] DE 20 2019 100 247 U1 discloses a pull-out guide for a drawer, in which a center rail is provided between a cabinet rail and a drawer rail, on which center rail a cable is guided circumferentially via two cable pulleys. The cable is connected to the drawer rail via a first coupling element and to the cabinet rail via a second coupling element. The two deflection pulleys are rotatably mounted on a vertical web of the center rail, and when the drawer rail is retracted, the cable pulleys are concealed within the drawer rail. However, during an extension movement, the cable pulley, at least the rear cable pulley, is exposed, which can cause damage, particularly when the drawer is removed, and can also lead to soiling of the deflection pulleys and the cable.

[0005] It is therefore an object of the present invention to provide a pull-out guide which has an improved synchronization of the center rail and avoids the disadvantages mentioned above.

[0006] This object is achieved with a pull-out guide having the features of claim 1.

[0007] The pull-out guide according to the invention comprises a guide rail, a running rail to be attached to a drawer, and a center rail between the guide rail and the running rail. A first bearing and a second bearing with a first and a second deflection roller are provided on the center rail, around which a flexible deflection element is guided. The flexible deflection element is part of a synchronization device via at least two coupling elements, wherein at least one stationary first coupling element is firmly connected to the guide rail and at least one second coupling element is firmly connected to the running rail and movable together with it, so that the center rail can be moved at half the speed of the running rail.The center rail is provided with a section with two downwardly projecting webs in a cross-section perpendicular to the longitudinal direction, with the first and second deflection rollers located between the two downwardly projecting webs. This section protects each deflection roller, at least partially located within the center rail, so that even when the drawer slide is extended, the majority of the deflection rollers are located within the two webs and thus protected from damage.

[0008] Preferably, each deflection roller is rotatably mounted on a bearing on one of the two downwardly projecting webs. The deflection rollers can be mounted on the web of the center rail facing away from the mounting web. Additional components for guiding or supporting one of the rails can be provided on the web facing the mounting web.

[0009] For a particularly compact design, the flexible deflection element with the second coupling element is arranged above the center rail in a gap between the center rail and the guide rail. The coupling element then protrudes from the guide rail to the center rail and is firmly connected to the deflection element, for example, a cable pull. The first coupling element can be arranged below a downwardly projecting web of the center rail and is preferably arranged in a space between the center rail and the guide rail.

[0010] Positioning and fastening means for the second coupling element are preferably formed integrally on the guide rail, for example in the form of webs, tabs, embossings, recesses or other sections.

[0011] The first and / or second coupling element can be made of plastic and welded to the deflection element. Furthermore, the flexible deflection element can be designed as a cable, particularly made of metal, or as a band. The deflection element can be formed as a single piece or composed of several individual sections.

[0012] The first coupling element is preferably fixed to the guide rail by first locking means, and / or the second coupling element is fixed to the running rail by second locking means. This allows the synchronization device to be mounted to the first and / or second coupling element via a simple locking mechanism, eliminating the need for further welding or gluing. The first and / or second coupling element can be fixed to the guide rail or running rail without additional fastening means, such as screws or rivets. Alternatively, it is also possible to firmly connect a first or second coupling element, or a part of the coupling element, to one of the two rails.

[0013] In an alternative variant according to the invention, the provision of first and / or second locking means for mounting the first and / or second coupling element is provided according to claim 17.

[0014] To prevent excessive loads on the cable pull, overload protection can be provided between at least one of the coupling elements and the guide rail or the running rail. This allows for relative movement between the coupling element and the guide rail or the running rail when a tensile force is exceeded in the extension direction or against the extension direction. Overload protection, for example, provided by a slip clutch, can then prevent damage to the synchronization device.

[0015] Preferably, the first and / or second locking means comprise flexible locking webs. The locking webs can, for example, have a locking projection at the end that engages behind an edge of an opening in the guide rail and / or the running rail.

[0016] In a preferred embodiment, a stop is formed integrally with the guide rail, for example by a protruding web or a bridging web connected to the guide rail at both ends, which limits movement of the second coupling element in the longitudinal direction on the guide rail during assembly of the second locking means. As a result, the second coupling element can be positioned in the longitudinal direction of the guide rail via the stop in order to simplify locking and to be able to absorb forces in the longitudinal direction of the guide rail between the coupling element and the stop. The stop can, for example, be arranged in an angular section of the guide rail, so that the second coupling element is surrounded by the guide rail on three sides.

[0017] A tab can also be formed integrally with the guide rail, for example in the form of a protruding web, wherein the second coupling element is fixed between the tab and a section of the guide rail. The tab can, for example, surround the coupling element on an underside, and the guide rail additionally surrounds the coupling element on an upper side, so that the coupling element is encompassed, for example in a U-shape. The sections arranged around the second coupling element can optionally be arranged offset in the longitudinal direction relative to the tab, so that the second coupling element is at least partially surrounded by the guide rail on four sides.

[0018] In a preferred embodiment, at least one projection, for example a pin, onto which the first coupling element is slipped, is formed integrally with the guide rail. Preferably, two projections are provided which are aligned perpendicular to the longitudinal direction of the guide rail and require installation of the first coupling element perpendicular to the longitudinal direction. The first coupling element can preferably be inserted into a recess in the guide rail, resulting in a compact design. The first coupling element can also be fixed to the edge of the recess via two or more locking webs. By arranging the first coupling element in the recess, the coupling element can be positively fixed to the guide rail in the longitudinal direction, so that forces can be transmitted by controlling the flexible deflection element.

[0019] The first coupling element and / or the second coupling element can preferably comprise two parts, wherein the second part can comprise, for example, a rack and the first part a locking receptacle for adjusting the rack. This allows for tolerance compensation, as the rack can be mounted in different positions along the locking receptacle. Furthermore, the rusting between the two parts can also be used as overload protection, so that the rack can slip along the locking receptacle if excessive force is applied. For better load transfer, the teeth of the rack and the teeth of the locking receptacle have a rounded shape.

[0020] To return the rack to a safe position on the locking mechanism after an initial overload, the drawer slide can be fully retracted so that the locking mechanism is again located in the center of the rack. This allows the rack to absorb the force in the event of a subsequent overload.

[0021] For a compact design, the outer diameter of the pulleys can be larger than the height of the downward-projecting web of the center rail.

[0022] The invention will be explained in more detail below using an exemplary embodiment with reference to the accompanying drawings. They show:

[0023] Figures 1 A to 1 C show several views of a pull-out guide according to the invention;

[0024] Figures 2A and 2B show two views of the guide rail of the pull-out guide of Figure 1;

[0025] Figures 3A to 3C show several views of the guide rail of Figure 1 during assembly of the second coupling element; Figures 4A and 4B show two views of the guide rail of the drawer guide with the second coupling element installed;

[0026] Figures 5A to 5D show several views of the center rail of the drawer guide;

[0027] Figures 6A and 6B show two detailed views of the front pulley of the center rail;

[0028] Figures 7A to 7D show several views of the second coupling element;

[0029] Figures 8A and 8B show two views of the guide rail of the pull-out guide of Figure 1 with the first coupling element mounted;

[0030] Figure 9 is an exploded view of the guide rail with the first coupling element;

[0031] Figures 10A and 10B show two views of the guide rail without the first coupling element;

[0032] Figures 11 A to 11 D show several views of the first part of the first coupling element, and

[0033] Figures 12A and 12B show two views of the second part of the first coupling element.

[0034] A drawer slide 1 comprises a stationary guide rail 2 that can be mounted on the body of a piece of furniture or a household appliance. The guide rail 2 has an angular cross-section and includes a protruding web with at least one guide track for rolling elements, on which a center rail 3 is movably mounted. The center rail 3 is arranged between the guide rail 2 and a guide rail 4, and the guide rail 4 is movable relative to the center rail 3 via additional rolling elements.

[0035] In order to move the guide rail 4 preferably at twice the speed of the center rail 3, a control mechanism is provided which is mounted on the center rail 3 and controls the movement of the guide rail 4 relative to the guide rail 2. The control mechanism comprises two deflection rollers 5 attached to the center rail 3, on which a flexible deflection element 50 is guided. The flexible deflection element 50 can, for example, be formed as a circumferential loop made of a cable, a belt, or another circumferential element. The deflection element 50 can also be formed from individual sections that are connected to one another. A connection can be realized, for example, by the coupling elements or by further intermediate elements (not shown).

[0036] Figures 2A and 2B show the guide rail 4, which is C-shaped in cross-section and has an upper base 40 from which two legs 41 and 42 project downwards. At a bend 43 between the base 40 and the leg 41, a first recess 45 and a second recess 46 are formed, between which a bridging web 44 is arranged. The bridging web 44 is angular and is connected at one end to the leg 41 and at the other end to the base 40. At the second recess 46, a protruding tab 47 is bent over, which is angular and projects from the leg 41 into an interior space adjacent to the base 40.

[0037] Next to the recess 46, a further bridge web 48 is formed, which is angularly formed and is connected at one end to the leg 41 and at the opposite end to the base 40. Next to the bridge web 48, an angular stop 49 is formed, which protrudes inward from the base 40 and the leg 41.

[0038] In order to be able to fix a second coupling element 20 to the running rail 4, according to Figure 3A, the coupling element 20 is positioned in a rear region of the running rail 4, wherein the coupling element 20 is preferably already connected to the flexible deflection element 50 and is fixed, for example, to the central rail 3 (not shown here) via the deflection rollers 5. The second coupling element 20 is now moved in the longitudinal direction of the running rail 4 up to the stop 49, which limits the insertion depth of the second coupling element 20. During this insertion movement, a locking means 21 in the form of a locking web is locked to the bridge web 44, as can be seen in particular in the detailed view of Figure 3C. The bridge web 44 is encompassed in a U-shape by a protruding stop 22 on the second coupling element 20 and the locking web of the locking means 21. One end face of the second coupling element 20 rests against the stop 49.The locking means 21 creates a reversible, fixed connection to the guide rail 4. In the event of disassembly, the locking means 21 can be easily released and the guide rail 4 replaced.

[0039] In addition, the second coupling element 20 is gripped under by the tab 47 on the side facing away from the base 40, so that movement of the second coupling element 20 is limited downwards by the tab 47, upwards by the base 40, longitudinally by the stop 49, and toward the recess 46 by the leg 41 and the bridge webs 44 and 48. This fixation of the second coupling element 20 ensures that it is securely held to the guide rail 4 without the need for additional fastening means.

[0040] Figures 4A and 4B show the second coupling element 20 in the assembled position, with the view directed into the interior of the guide rail 4, which is arranged between the two legs 41 and 42 adjacent to the base 40. The second coupling element 20 is arranged in the region of the bend 43 between the leg 41 and the base 40 and is stably fixed there to the bridge web 44 via the tab 47, the stop 49 and the locking means 21 as well as the stop 22.

[0041] Figures 5A to 5D show the center rail 3 without the guide rail 2 and the running rail 4. The center rail 3 is formed in a cross-section perpendicular to the longitudinal direction in the shape of a "C" and comprises two downwardly projecting webs 52 and 53, which are connected to one another via a horizontal connecting section 51. Formed on the downwardly projecting web 53 is an angled portion 54, on which rolling elements or sliding elements are provided, at least in the rear region, to prevent the center rail 3 from lifting in an extended position.

[0042] The two deflection rollers 5 are rotatably mounted on the other vertically downwardly projecting web 52, which, in the installed position, faces away from a mounting web 6 of the guide rail 2. For this purpose, a receptacle for a bearing 35 for the deflection roller 5 is formed on the downwardly projecting web 52.

[0043] Furthermore, an angled section 55 is provided on the downwardly projecting web 52, which engages under the leg 41 of the guide rail 4. On the center rail 3, in a central region of the webs 52 and 53 with respect to the longitudinal direction of the center rail 3, a roller 56 is provided, which is rotatably mounted and serves to guide the inwardly directed webs on the guide rail 4, which are formed at the free ends of the legs 41 and 42.

[0044] In the installed state, the first coupling element 10 is arranged below the downwardly projecting web 52 and connected there to the guide rail. The second coupling element 20 is positioned above the center rail 3 and connected to the flexible deflection element 50. The second coupling element 20 is arranged in a protected manner in the gap between the guide rail 4 and the center rail 3.

[0045] According to Figure 5D, a diameter D of the deflection roller 5 is larger than a height H of a vertical web 52 of the center rail 3, on which the deflection roller 5 is rotatably mounted.

[0046] Figures 6A and 6B show the front deflection pulley 5 in detail. It can be seen that the diameter of the deflection pulley 5 is larger than the vertical extent of the center rail 3. As a result, an upper end of the deflection pulley 5 protrudes at a recess in the connecting section 51, and the flexible deflection element 50 is arranged above the center rail 3 via the deflection pulley 5 and can thus be connected to the guide rail 4 via the second coupling element 20. The lower section of the deflection pulley 5 protrudes downward beyond the web 52 and is connected there to the guide rail 2 via the first coupling element 10.

[0047] The second coupling element 20 is shown in detail in Figures 7A to 7D. The second coupling element 20 is preferably made in one piece from plastic. The second coupling element 20 comprises a flexible locking web as a locking means 21, which is separated from a body of the second coupling element 20 by a slot 23. The locking web of the locking means 21 has a starting curve to ensure smooth sliding past the bridge web 44 without snagging. A stop 22 is integrally formed at a predetermined distance from the locking means 21, so that a receptacle 25 for the bridge web 44 is formed between the stop 22 and the locking web as a locking means 21. An end face 24 of the second coupling element 20, which is essentially cuboid-shaped in plan view, serves as a stop during the assembly movement to the stop 49 on the guide rail 4.The second coupling element 20 can be welded to the flexible deflection element 50, for example, the metallic cable pull. For this purpose, an arcuate section 26 is provided on the side facing away from the locking means 21, with two flattened areas 28 adjoining its two end faces. The flexible deflection element 50 is guided integrally through the arcuate section 26 and secured, for example, by ultrasonic welding.

[0048] On the underside of the second coupling element 20, a channel 27 is provided, against which an angled section of the tab 47 can be placed to prevent the second coupling element from being pulled off towards the second leg 42. This channel 27 has a lead-in slope 29 at the front end, which ensures correct positioning of the second coupling element 20 relative to the guide rail 4 in a direction perpendicular to the longitudinal direction of the guide rail 4. This ensures that the locking means 21 and the stop 22 can enclose the bridge web 44 and do not slide past the bridge web 44 in the interior of the guide rail 4.

[0049] Figures 8A and 8B show the guide rail 2 of the pull-out guide 1 without the center rail 3 and the running rail 4. The guide rail 2 comprises a mounting web 6, which can be mounted to a wall of a furniture body or a household appliance using fastening means such as screws. A support web 8 protrudes substantially vertically from the mounting web 6, on which one or more raceways for rolling elements are formed on an upwardly projecting web 7. A first coupling element 10, which holds the flexible deflection element 50, is fixed to a bend 9 between the support web 8 and the web 7. The first coupling element 10 comprises a first part 11 and a second part 12 mounted on the first part 11.

[0050] As shown in Figure 9, the first coupling element 10 can be mounted on a recess 13 of the guide rail 2. The recess 13 is formed in the region of a bend 9 between the support web 8 and the web 7. In the region of the recess 13, two projections 14 are integrally formed, which are designed as pins or studs and serve for mounting the first part 11 of the coupling element 10. The first part 11 can be plugged onto the projections 14 from below in order to be fixed to the recess 13. The second part 12 is plugged onto the first part 11, with a toothed rack 30 formed on the second part 12, which can be fixed in different positions to a locking receptacle of the first part 11. This enables tolerance compensation in the longitudinal direction of the toothed rack 30 and in the longitudinal direction of the guide rail 2.

[0051] In Figures 10A and 10B, the guide rail 2 is shown without the first coupling element 10. Two projections 14 are formed on the guide rail 2 in the area of ​​the recess 13, which protrude downward in the assembled position. The recess 13 extends on both sides of the bend 9 in the area of ​​the web 7 and the supporting web 8.

[0052] The first part 11 of the first coupling element 10 is shown in detail in Figures 11A to 11D. The first part 11 is preferably made of plastic and comprises two openings 15 into which the projections 14 engage in the mounted position. Clamping elements can be provided in the region of the opening 15 to ensure a positive-locking and optionally also clamping fixation of the first part 11 to the projections 14 of the guide rail. Furthermore, a locking receptacle is formed on the first part 11, which is provided between a first web 17 and a second web 18. The web 17 and the web 18 are provided on the mutually facing side with a toothing which can be brought into engagement with a toothing of the rack 30. On at least one of the webs 17 and 18, here on the web 17, at least one locking projection 19 is provided, which ensures that the rack 30 is locked to the first part 11.

[0053] The first part 11 further comprises two locking means 16 in the form of flexible locking webs which, in the mounted position, engage behind an edge of the recess 13 and ensure a positive or clamping fixation of the first part 11 to the guide rail 2.

[0054] Figures 12A and 12B show the second part 12 of the first coupling element 10. The second part 12 comprises a rack 30, which is longer than the locking receptacle between the webs 17 and 18, so that the rack 30 can be fixed to the locking receptacle in different positions. On a first side of the rack 30, viewed in the longitudinal direction, a holder 31 is provided, which has a fastening section 33 for fixing the flexible deflection element 50. On the opposite side, a second holder 32 is provided, which also includes a fastening section 33. One end of the flexible deflection element 50, for example a metal cable pull, can be fastened to each of the two fastening sections 33. Here, the flexible deflection element 50 is inserted into the fastening section 33 and welded.In the mounted position, the rack 30 then engages in the locking receptacle on the first part 11, wherein in the event of an overload in the longitudinal direction of the rack 30, the locking receptacle is designed to be flexible and the rack 30 can be displaced in the longitudinal direction in order to prevent destruction of the flexible deflection element 50 or one of the other components.

[0055] In addition, the end faces of the holders 31 and 32 facing the rack 30 act as stops 34 on the locking receptacle in the event of a maximum adjustment of the rack 30 in the locking receptacle on the first part 11.

[0056] This prevents the rack 30 from slipping on the locking receptacle in both directions.

[0057] For the assembly of the drawer guide 1, the center rail 3 is first provided, on which two deflection rollers 5 are mounted, in particular rotatably mounted, in order to then arrange a flexible deflection element 50 in the form of a cable or a band around the deflection rollers 5. A first coupling element 10 and a second coupling element 20, or a first part of one of the two coupling elements, are also fixed to the flexible deflection element 50.

[0058] The thus formed center rail 3 with the control mechanism is then connected to a guide rail 2, wherein rolling elements in rolling element cages are provided between the guide rail 2 and the center rail 3, and the guide rail 2 is connected to the first part 11 of the first coupling element 10 by bolting. The second part 12 can then be bolted to the first part 11 by inserting the rack 30 into the locking receptacle, with corresponding bevels provided for this purpose on the locking projections 19. Optionally, the first coupling element 10 can also first be bolted to the two parts 11 and 12 before the first coupling element 10 is mounted on the guide rail 2.

[0059] Furthermore, the running rail 4 is partially pushed onto the middle rail 3 in the longitudinal direction, wherein a longitudinal movement of the middle rail 3 towards the running rail 4, which leads to a greater overlap of the middle rail 3 and the running rail 4, the second coupling element 20 rusts on the running rail 4, as already described above with reference to Figure 3. The order of the assembly steps can be chosen arbitrarily, and it is also possible to first mount the running rail 4 on the middle rail 3 and only then the guide rail 2. In the illustrated embodiment, only the first coupling element 10 is designed in two parts, and the second coupling element 20 is designed in one part. It is of course also possible to design the second coupling element on the running rail in two parts and the coupling element on the guide rail optionally in one or two parts.

[0060] The guide rail 2, the center rail 3, and the running rail 4 are preferably made of a bent or profiled metal sheet by punching and bending. The coupling elements 10 and 20 are preferably made of plastic or a composite material made of different materials.

[0061] List of reference symbols

[0062] 1 drawer guide

[0063] 2 guide rails

[0064] 3 middle rail

[0065] 4 guide rail

[0066] 5 pulley

[0067] 6 Mounting bridge

[0068] 7 jetty

[0069] 8 Supporting web

[0070] 9 Bend

[0071] 10 coupling element

[0072] Part 11

[0073] Part 12

[0074] 13 Recess

[0075] 14 lead

[0076] 15 Opening

[0077] 16 rest stops

[0078] 17 jetty

[0079] 18 jetty

[0080] 19 locking projection

[0081] 20 coupling element

[0082] 21 rest stops

[0083] 22 stop

[0084] 23 slot

[0085] 24 front side

[0086] 25 recording

[0087] Section 26

[0088] 27 Channel

[0089] 28 Area

[0090] 29 Inlet slope

[0091] 30 rack

[0092] 31 holders

[0093] 32 holders

[0094] 33 Fastening section

[0095] 34 stop

[0096] 35 warehouses

[0097] 40 floor

[0098] 41 legs 42 legs

[0099] 43 Bend

[0100] 44 Bridge footbridge

[0101] 45 recess

[0102] 46 recess

[0103] 47 tab

[0104] 48 Bridge footbridge

[0105] 49 stop

[0106] 50 flexible deflection element

[0107] 51 connecting section

[0108] 52 jetty

[0109] 53 jetty

[0110] 54 Bending

[0111] 55 Section 56 Role

[0112] D Diameter

[0113] H Height

Claims

Claims 1 . Drawer guide (1 ) comprising: - a guide rail (2) which can be mounted on a furniture body via a mounting bar (6), - a guide rail (4) to be attached to a drawer, which is mounted so as to be movable relative to the guide rail (2), - a central rail (3) which is mounted so as to be movable between the guide rail (2) and the running rail (4), - a first and second bearing (35) with a first and second deflection roller (5) around which a flexible deflection element (50) is guided, wherein the bearings (35) are arranged at a front and rear end region of the central rail (3), - wherein at least two coupling elements (10, 20) are firmly connected to the flexible deflection element (50), and at least one stationary first coupling element (10) is firmly connected to the guide rail (2) and at least one second coupling element (20) is firmly connected to the running rail (4) and is movable together with the latter, characterized in that the central rail (3) comprises, in a cross-section perpendicular to the longitudinal direction, a section with two downwardly projecting webs (52, 53), and the first and second deflection rollers (5) are arranged between the two downwardly projecting webs (52, 53).

2. Pull-out guide according to claim 1, characterized in that the first and the second deflection roller (5) are each rotatably held on one of the bearings (35) on one of the two downwardly projecting webs (52, 53).

3. Pull-out guide according to claim 1 or 2, characterized in that the two deflection rollers (5) are held on the web (52) facing away from the mounting web (6).

4. Pull-out guide according to one of the preceding claims, characterized in that the flexible deflection element (50) with the second coupling element (20) is arranged above the center rail (3) in a gap between the center rail (3) and the guide rail (4).

5. Pull-out guide according to one of the preceding claims, characterized in that positioning and fastening means for the second coupling element (20) are integrally formed on the guide rail (4).

6. Pull-out guide according to one of the preceding claims, characterized in that the first coupling element (10) is arranged below a downwardly projecting web (52) of the central rail (3).

7. Pull-out guide according to one of the preceding claims, characterized in that at least one of the two coupling elements (10, 20) is welded to the flexible deflection element (50).

8. Pull-out guide according to one of the preceding claims, characterized in that the first coupling element (10) is fixed to the guide rail (2) by first locking means (16) and / or the second coupling element (20) is fixed to the running rail (4) by second locking means (21).

9. Pull-out guide according to claim 8, characterized in that the first and / or second locking means (16, 21) comprise flexible locking webs.

10. Pull-out guide according to one of the preceding claims, characterized in that at least one coupling element (10, 20) comprises an overload clutch which enables a relative movement between the coupling element (10, 20) and the guide rail (2) or the running rail (4) when a force in the pull-out direction or against the pull-out direction is exceeded.

11. Pull-out guide according to one of the preceding claims, characterized in that a stop (49) is formed integrally with the guide rail (4), which stop limits a movement of the second coupling element (20) in the longitudinal direction of the guide rail (4) during assembly.

12. Pull-out guide according to one of the preceding claims, characterized in that a tab (47) is formed integrally with the guide rail (4) and the second coupling element (20) is fixed between the tab (47) and a section of the guide rail (4).

13. Pull-out guide according to one of the preceding claims, characterized in that a channel (27) is formed on an underside of the second coupling element (20), into which channel a part of the tab (47) engages.

14. Pull-out guide according to one of the preceding claims, characterized in that at least one projection (14) is formed integrally with the guide rail (2), onto which the first coupling element (10) is plugged.

15. Pull-out guide according to one of the preceding claims, characterized in that the first coupling element (10) is inserted in a recess (13) in the guide rail (2).

16. Pull-out guide according to claim 8, characterized in that two locking means (16) in the form of locking webs are formed on the first coupling element (10), which engage behind an edge of the recess (13).

17. Pull-out guide according to one of the preceding claims, characterized in that the first coupling element (10) and / or the second coupling element (20) comprises two parts (11, 12) and the second part (12) has a rack (30) and the first part (11) has a locking receptacle for the rack (30).

18. Pull-out guide according to one of the preceding claims, characterized in that an outer diameter (D) of the deflection rollers (5) is greater than a vertical height (H) of the downwardly projecting web (52, 53) on which the deflection rollers (5) are held.

19. Pull-out guide (1) with a stationary guide rail (2), a movable running rail (4) and a middle rail (3) between the guide rail (2) and the running rail (4), which are each movable relative to one another via rolling elements, wherein two deflection rollers (5) are held on the middle rail (3), on which a flexible deflection element (50) is guided in a rotating manner and the deflection element (50) is fixed to the guide rail (2) via a first coupling element (10) and to the running rail (4) via a second coupling element (20), characterized in that the first coupling element (10) is fixed to the guide rail (2) by first locking means (16). the guide rail (2) and / or the second coupling element (20) is fixed to the running rail (4) by second locking means (21).

Images