Pull-out guide and method of mounting a pull-out guide

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 web (6), a running rail (4) for attachment to a drawer, which is mounted movably relative to the guide rail (2), a middle rail (3) which is mounted movably between the guide rail (2) and the running rail (4), first and second bearings (35) with first and second deflection rollers (5) around which a flexible deflection element (50) is guided, wherein the bearings (35) are arranged in a front end region and a 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 moves with the running rail, wherein the middle 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).

Description

Technical Field

[0001] The present invention relates to a pull-out guide comprising: a guide rail mountable to a furniture body via a mounting web; a running rail for fixing to a drawer, the running rail being movably mounted relative to the guide rail; a center rail movably mounted between the guide rail and the running rail; first and second bearings having first and second deflecting rollers, a flexible deflecting element being guided around the first and second deflecting rollers, wherein the bearings are arranged in a front end region and a rear end region of the center rail, wherein at least two connecting elements are fixedly connected to the flexible deflecting element, and at least one stationary first connecting element is fixedly connected to the guide rail, and at least one second connecting element is fixedly connected to the running rail and moves therewith. Background Technology

[0002] DE 10 2020 121 282 A1 discloses a pull-out guide comprising a stationary guide rail, a center rail, and a movable running rail, wherein the movement of the center rail is synchronized via flexible deflection elements. For this purpose, the flexible deflection elements are connected to rolling element retainers for rolling elements between the center rail and the running rail, and to another rolling element retainer for rolling elements between the center rail and the guide rail. This allows the movement of the rolling element retainers to move the center rail at half the speed relative to the running rail. Although fixing to the roller retainers achieves a compact design, slippage can occur between the contact surfaces of the rollers and the guide rail, or between the rollers and the roller retainers. This can lead to synchronization problems, especially under impact loads.

[0003] DE 20 2019 100 247 U1 discloses a pull-out guide in which a center rail is provided between cabinet rails and drawer rails, and a cable is guided around the center rail via two pulleys. The cable is connected to the drawer rail via a first connecting element and to the cabinet rail via a second connecting element. The two pulleys are rotatably mounted on the vertical web of the center rail, and when the drawer rails are in the retracted position, the cable pulleys are concealed within the drawer rails. However, during the pull-out movement, at least the rear cable pulley is exposed, which may lead to damage, especially when the drawer is removed, and may cause contamination of the pulleys and cable. Summary of the Invention

[0004] Therefore, the object of the present invention is to provide a pull-out guide that has improved center rail synchronization function and avoids the above-mentioned disadvantages.

[0005] This objective is achieved by a pull-out guide having the features described in claim 1.

[0006] The pull-out guide according to the invention includes a guide rail, a running rail for fixing to a drawer, and a center rail between the guide rail and the running rail. A first bearing and a second bearing are disposed on the center rail, the first and second bearings having first and second deflecting rollers. A flexible deflecting element is guided around the first and second deflecting rollers. The flexible deflecting element forms part of a synchronization device via at least two connecting elements, wherein at least one stationary first connecting element is fixedly connected to the guide rail, and at least one second connecting element is fixedly connected to and moves with the running rail, such that the center rail moves at half the speed of the running rail. In this configuration, the center rail includes a section with two downwardly projecting webs in a cross-section perpendicular to the longitudinal direction, wherein the first and second deflecting rollers are arranged between the two downwardly projecting webs. Due to this section, each deflecting roller is protected and at least partially arranged inside the center rail, such that even when the telescopic guide rail is extended, the deflecting roller is primarily located within the two webs, thus protected from damage.

[0007] Preferably, each deflection roller is rotatably mounted on a bearing of one of the two downwardly projecting webs. In this configuration, the deflection roller can be mounted on the center rail web facing away from the mounting web. Additional components for guiding or supporting one of the guide rails can be provided on the web facing the mounting web.

[0008] To achieve a particularly compact design, the flexible deflection element is positioned above the center rail and in the gap between the center rail and the running rail, together with the second connecting element. The connecting element then protrudes from the running rail toward the center rail and is securely connected to the deflection element, for example, by cable traction. The first connecting element may be positioned below the downwardly projecting web of the center rail, and preferably in the space between the center rail and the guide rail.

[0009] The positioning and fixing device for the second connecting element is preferably integrally formed with the running rail, for example in the form of a web, a connecting piece, an embossed part, a recess, or other section.

[0010] The first and / or second connecting elements can be made of plastic and welded to the deflection element. Furthermore, the flexible deflection element can be configured as a cable, particularly a metal cable, or as a belt. The deflection element can be integrally formed or assembled from multiple individual segments.

[0011] The first connecting element is preferably secured to the guide rail by a first snap-fit ​​device, and / or the second connecting element is secured to the running rail by a second snap-fit ​​device. This allows the synchronization device to be assembled with the first and / or second connecting elements via a simple snap-fit ​​mechanism without additional welding or bonding. In this respect, the first and / or second connecting elements can be secured to the guide rail or running rail without additional fasteners such as screws or rivets. Alternatively, the first or second connecting element, or a portion thereof, can be securely attached to one of the two guide rails.

[0012] In an alternative embodiment of the invention, according to claim 17, a first and / or second snap-fit ​​device is provided for mounting the first and / or second connecting element.

[0013] To prevent excessive load on the cable traction, an overload protection device can be installed between at least one connecting element and the guide rail or running rail to allow relative movement between the connecting element and the guide rail or running rail when the tensile force is too large in the extension direction or opposite to the extension direction. In this case, the overload protection device (e.g., a slip clutch) can prevent damage to the synchronization mechanism.

[0014] Preferably, the first and / or second snap-fit ​​device includes a flexible snap-fit ​​web. For example, the snap-fit ​​web may have a snap-fit ​​protrusion at its end that engages behind the opening edge of the guide rail and / or running rail.

[0015] In a preferred embodiment, the stop is integrally formed with the running rail, for example, by means of a protruding web or a bridging web connected to the running rail at both ends. This stop restricts movement of the second connecting element along the longitudinal direction of the running rail during installation of the second snap-fit ​​device. This allows the second connecting element to be positioned longitudinally along the running rail via the stop, simplifying the snap-fit ​​and absorbing forces between the connecting element and the stop in the longitudinal direction of the running rail. For example, the stop can be arranged in an angular section of the running rail such that the second connecting element is surrounded on three sides of the running rail.

[0016] The connecting piece can also be integrally formed with the running rail, for example, in the form of a protruding web, wherein the second connecting element is fixed between the connecting piece and a section of the running rail. For example, the connecting piece can surround the connecting element from the bottom side, and the running rail can additionally surround the connecting element from the top side, such that the connecting element is surrounded, for example, in a U-shape. In this respect, the section arranged around the second connecting element can optionally be longitudinally offset relative to the connecting piece, such that the second connecting element is at least partially surrounded on all four sides of the running rail.

[0017] In a preferred embodiment, at least one protrusion (e.g., a pin) is integrally formed with the guide rail, and a first connecting element is mounted on this protrusion. Preferably, two protrusions are provided, aligned perpendicular to the longitudinal direction of the guide rail, and the first connecting element is required to be mounted perpendicular to the longitudinal direction. The first connecting element can preferably be inserted into a recess in the guide rail, thereby forming a compact structure. The first connecting element can also be secured to the edge of the recess via two or more snap-fit ​​webs. By positioning the first connecting element in the recess, the connecting element can be secured to the guide rail in the longitudinal direction by form-fit, thereby allowing force to be transmitted by controlling a flexible deflection element.

[0018] The first and / or second connecting element may preferably comprise two parts, wherein the second part may, for example, comprise a rack, and the first part may comprise a snap-fit ​​receptacle for locking the rack. This allows for tolerance compensation because the rack can be mounted in different positions along the snap-fit ​​receptacle. Furthermore, the locking mechanism between the two parts can also serve as overload protection, allowing the rack to slide along the snap-fit ​​receptacle if the force becomes excessive. For better load transfer, the teeth of the rack and the teeth of the snap-fit ​​receptacle have a rounded shape.

[0019] To return the rack to a safe position on the latching housing after an initial overload, the pull-out guide can be fully extended, so that the latching housing is once again located in the middle section of the rack. This allows the rack to absorb force in the event of another overload.

[0020] For a compact design, the outer diameter of the deflection roller can be greater than the height of the web plate that protrudes downward from the center rail. Attached Figure Description

[0021] The invention will now be described in more detail with reference to the accompanying drawings, in which:

[0022] Figures 1A to 1C Multiple views of the pull-out guide according to the present invention are shown; Figure 2A and Figure 2B Two views of the running track of the pull-out guide in Figure 1 are shown; Figures 3A to 3C Several views of the running track in Figure 1 are shown during the installation of the second connecting element; Figure 4A and Figure 4B Two views of the running rail with the second connecting element installed are shown; Figures 5A to 5D Showing multiple views of the pulled-out guide rail; Figure 6A and Figure 6B Two detailed views of the deflection roller at the front of the center rail are shown; Figures 7A to 7DMultiple views of the second connecting element are shown; Figure 8A and Figure 8B Two views of the guide rail of the pull-out guide shown in Figure 1 are shown with the first connecting element installed; Figure 9 An exploded view of the guide rail and the first connecting element is shown; Figure 10A and Figure 10B Two views of the guide rail without the first connecting element are shown; Figures 11A to 11D Multiple views showing the first portion of the first connecting element; and Figure 12A and Figure 12B Two views are shown of the second part of the first connecting element. Detailed Implementation

[0023] The pull-out guide 1 includes a stationary guide rail 2 that can be mounted on a furniture body or a household appliance body. The guide rail 2 has an angular cross-section and includes a protruding web with at least one raceway for a rolling element, on which a center rail 3 is movably held. The center rail 3 is arranged between the guide rail 2 and a running rail 4, which is movable relative to the center rail 3 via an additional rolling element.

[0024] To enable the running rail 4 to move at a speed preferably twice that of the middle rail 3, a control mechanism mounted on the middle rail 3 is provided, which controls the movement of the running rail 4 relative to the guide rail 2. This control mechanism includes two deflecting rollers 5 mounted on the middle rail 3, around which flexible deflecting elements 50 are guided. The flexible deflecting elements 50 can be formed, for example, as a continuous loop of a cable, belt, or other continuous element. The deflecting elements 50 can also be formed from interconnected individual sections. Connections can be achieved, for example, by connecting elements or by additional intermediate elements (not shown).

[0025] Figure 2A and Figure 2B The running track 4 is shown, having a C-shaped cross-section and including an upper base 40 from which two legs 41 and 42 project downwards. At a bend 43 between the base 40 and the legs 41, a first recess 45 and a second recess 46 are formed, with a bridging web 44 disposed between them. The bridging web 44 is angular and connects to the legs 41 at one end and to the base 40 at the other end. A protruding tab 47 bends around the second recess 46; this tab is angular and protrudes from the legs 41 into an interior space adjacent to the base 40.

[0026] Adjacent to the recess 46, another bridging web 48 is formed, which is angular and connected to the leg 41 at one end and to the base 40 at the opposite end. Adjacent to the bridging web 48, an angular stop 49 is formed, which protrudes inward from the base 40 and the leg 41.

[0027] To secure the second connecting element 20 to the running rail 4, such as Figure 3A As shown, the connecting element 20 is positioned in the rear region of the running rail 4, wherein the connecting element 20 is preferably already connected to the flexible deflection element 50 and fixed to the middle rail 3 (not shown here), for example, via the deflection roller 5. The second connecting element 20 now moves along the longitudinal direction of the running rail 4 until it reaches the stop 49, which limits the insertion depth of the second connecting element 20. During this insertion movement, the snap-fit ​​device 21, in the form of a snap-fit ​​web, engages with the bridging web 44, as... Figure 3C The detailed view is shown particularly clearly. The bridging web 44 is thus held in a U-shape by the protruding stop 22 on the second connecting element 20 and the snapping web of the snapping device 21. One end face of the second connecting element 20 abuts against the stop 49.

[0028] The latching device 21 forms a reversible and secure connection with the running rail 4. During disassembly, the latching device 21 can be easily released and the running rail 4 can be replaced.

[0029] Furthermore, the second connecting element 20 is held from below by the tab 47 on the side opposite to the base 40, such that the downward movement of the second connecting element 20 is restricted by the tab 47, the upward movement is restricted by the base 40, the longitudinal direction is restricted by the stop 49, and the movement toward the recess 46 is restricted by the support leg 41 and the bridging webs 44 and 48. Through this fixing of the second connecting element 20, it is stably held on the running rail 4 without further fastening devices.

[0030] Figure 4A and Figure 4B The second connecting element 20 is shown in its installed position, viewed toward the interior of the running rail 4, located between the two legs 41 and 42, adjacent to the base 40. The second connecting element 20 is arranged in the region of the bend 43 between the legs 41 and the base 40, and is securely fixed there there via a tab 47, a stop 49, a snap-fit ​​device 21, and a stop 22 on the bridging web 44.

[0031] Figures 5A to 5DThe diagram shows a center rail 3 without guide rail 2 and running rail 4. The center rail 3 has a "C" shape in cross-section perpendicular to the longitudinal direction and includes two downwardly projecting webs 52 and 53, which are interconnected via a horizontal connecting section 51. A corner 54 is formed on the downwardly projecting web 53, at which at least in the rear region, a rolling or sliding element is provided to prevent the center rail 3 from lifting in the retracted position.

[0032] Two deflecting rollers 5 are rotatably mounted on another vertically downward projecting web 52, which, in the mounting configuration, faces away from the mounting web 6 opposite to the guide rail 2. For this purpose, a housing for bearings 35 for the deflecting rollers 5 is formed on the downward projecting web 52.

[0033] In addition, an angular section 55 is provided on the downwardly protruding web 52, which engages below the support leg 41 of the running rail 4.

[0034] On the center rail 3, in the central region of the webs 52 and 53 relative to the longitudinal direction of the center rail 3, there are rotatably mounted rollers 56, which are used to guide the inward-facing webs on the running rail 4, which are formed at the free ends of the legs 41 and 42.

[0035] In the mounting configuration, the first connecting element 10 is positioned below the downwardly projecting web 52 and connected there to the guide rail. The second connecting element 20 is positioned above the center rail 3 and connected to the flexible deflection element 50. The second connecting element 20 is thus positioned protectively in the gap between the running rail 4 and the center rail 3.

[0036] according to Figure 5D The diameter D of the deflection roller 5 is greater than the height H of the vertical web 52 of the middle rail 3, and the deflection roller 5 is rotatably mounted on the vertical web.

[0037] Figure 6A and Figure 6B The front deflecting roller 5 is shown in detail. It can be seen that the diameter of the deflecting roller 5 is larger than the vertical extension of the center rail 3. As a result, the upper end of the deflecting roller 5 protrudes from a recess in the connecting section 51, and the flexible deflecting element 50 is arranged above the center rail 3 via the deflecting roller 5, thus allowing it to be connected to the running rail 4 via the second connecting element 20. The lower part of the deflecting roller 5 protrudes downward via the web 52, and there it is connected to the guide rail 2 via the first connecting element 10.

[0038] Figures 7A to 7DThe second connecting element 20 is shown in detail. The second connecting element 20 is preferably integrally manufactured from plastic. The second connecting element 20 includes a flexible snap-fit ​​web serving as a snap-fit ​​device 21, which is separated from the body of the second connecting element 20 via a groove 23. The snap-fit ​​web of the snap-fit ​​device 21 has a ramp to ensure smooth sliding over the bridging web 44 without jamming. At a predetermined distance from the snap-fit ​​device 21, a stop 22 is integrally formed, such that a receiving portion 25 for the bridging web 44 is formed between the stop 22 and the snap-fit ​​web serving as the snap-fit ​​device 21.

[0039] One end face 24 of the second connecting element 20 (which is substantially cuboid in top view) serves as a stop against the stop 49 on the running rail 4 during assembly movement. The second connecting element 20 can be welded to the flexible deflection element 50, such as a metal cable. For this purpose, an arched section 26 is provided on the side opposite to the snap-fit ​​device 21, with its two end faces abutting two flat areas 28. The flexible deflection element 50 integrally passes through the arched section 26 and is secured, for example, by ultrasonic welding.

[0040] A channel 27 is provided on the bottom side of the second connecting element 20, and the angled section connector of the running rail 4 can be placed against this channel to prevent the second connecting element from being pulled towards the second support leg 42. The channel 27 has an entrance ramp 29 at its front end, which ensures the correct positioning of the second connecting element 20 relative to the running rail 4 in a direction perpendicular to the longitudinal direction of the running rail 4. This ensures that the snap-fit ​​device 21 and the stop 22 can surround the bridging web 44 and will not slip past the bridging web 44 inside the running rail 4.

[0041] Figure 8A and Figure 8B The diagram shows a guide rail 2 without a center rail 3 and a running rail 4, and a pull-out guide rail 1. The guide rail 2 includes a mounting web 6, which can be mounted to a furniture cabinet wall or appliance wall using fasteners such as screws. A support web 8 projects substantially vertically from the mounting web 6, and one or more raceways for rolling elements are formed on an upwardly projecting web 7 on the support web. A first connecting element 10 is fixed at a bend 9 between the support web 8 and the web 7; this element holds a flexible deflecting element 50. The first connecting element 10 includes a first portion 11 and a second portion 12 mounted on the first portion.

[0042] like Figure 9As shown, the first connecting element 10 can be installed in the recess 13 of the guide rail 2. The recess 13 is formed in the region of the bend 9 between the supporting web 8 and the web 7. In the region of the recess 13, two protrusions 14 are integrally formed, which are designed as pins and used to install the first part 11 of the connecting element 10. The first part 11 can be inserted from below into the protrusions 14 to be fixed in the recess 13. The second part 12 is fitted onto the first part 11, wherein a rack 30 is formed on the second part 12, which can be fixed in different positions to the snap-fit ​​receiving portion of the first part 11. This allows for tolerance compensation in the longitudinal direction of the rack 30 and in the longitudinal direction of the guide rail 2.

[0043] Figure 10A and Figure 10B The guide rail 2 without the first connecting element 10 is shown. In the region of the recess 13, two protrusions 14 are formed on the guide rail 2, which protrude downwards in the mounting position. The recess 13 extends on both sides of the bend 9 in the regions of the web 7 and the supporting web 8.

[0044] The first part 11 of the first connecting element 10 is in Figures 11A to 11D The details are shown below. The first part 11 is preferably made of plastic and includes two openings 15 into which the protrusion 14 engages in the mounting position. Clamping elements can be provided in the area of ​​the openings 15 to ensure a form fit and optional clamping fixation between the first part 11 and the protrusion 14 of the guide rail. In addition, a snap-fit ​​receiving portion is formed on the first part 11, which is disposed between the first web 17 and the second web 18. The webs 17 and 18 are provided with teeth on their opposite sides that can engage with the teeth of the rack 30. At least one of the webs 17 and 18 (in this example, web 17) is provided with at least one snap-fit ​​protrusion 19, which ensures that the rack 30 is locked onto the first part 11.

[0045] The first part 11 also includes two snap-fit ​​devices 16 in the form of flexible snap-fit ​​webs, which engage behind the edge of the recess 13 in the installation position and ensure the form fit or clamping fixation between the first part 11 and the guide rail 2.

[0046] Figure 12A and Figure 12BThe second portion 12 of the first connecting element 10 is shown. The second portion 12 includes a rack 30, which is longer than the snap-in receiving portion between the webs 17 and 18, allowing the rack 30 to be secured to the snap-in receiving portion in different positions. On a first side of the rack 30, viewed longitudinally, is a retainer 31 having a fixing section 33 for securing the flexible deflection element 50. On the opposite side is a second retainer 32, which also includes the fixing section 33. One end of the flexible deflection element 50 (e.g., a metal cable) can be secured to each of the two fixing sections 33. Here, the flexible deflection element 50 is inserted into and welded into the fixing section 33. In the installed position, the rack 30 then engages with the snap-in receiving portion on the first portion 11; in the event of overload in the longitudinal direction of the rack 30, the snap-in receiving portion is designed to be flexible, and the rack 30 can be displaced in the longitudinal direction to prevent damage to the flexible deflection element 50 or any other component.

[0047] Furthermore, the end faces of the retainers 31 and 32 facing the rack 30 act as stops 34 when the rack 30 is at its maximum adjustment within the snap-fit ​​receiving portion of the first part 11. This prevents the rack 30 from sliding past the snap-fit ​​receiving portion in either direction.

[0048] To assemble the pull-out guide 1, a central rail 3 is first provided, on which two deflecting rollers 5 are mounted, specifically on rotatable bearings. A flexible deflecting element 50, in the form of a cable traction or belt, is then arranged around the deflecting rollers 5. A first connecting element 10 and a second connecting element 20, or a first portion of one of the two connecting elements, are also fixed to the flexible deflecting element 50.

[0049] The resulting central rail 3 with a control mechanism is now connected to the guide rail 2, wherein a rolling element in a rolling element holder is provided between the guide rail 2 and the central rail 3, and the guide rail 2 is connected to the first portion 11 of the first connecting element 10 by a snap-fit. The second portion 12 can then be snapped onto the first portion 11 by inserting the rack 30 into the snap-fit ​​receiving portion, for which a corresponding inlet ramp is provided on the snap-fit ​​protrusion 19. Alternatively, the first connecting element 10 can be snapped into place together with the two portions 11 and 12 before the first connecting element 10 is installed on the guide rail 2.

[0050] Furthermore, the running rail 4 partially slides onto the middle rail 3 in the longitudinal direction, thereby locking the second connecting element 20 onto the running rail 4 by the longitudinal movement of the middle rail 3 toward the running rail 4 (resulting in increased overlap between the middle rail 3 and the running rail 4), as described above with reference to FIG3. The order of the assembly steps can be arbitrarily chosen; the running rail 4 can be installed on the middle rail 3 first, and then the guide rail 2 can be installed.

[0051] In the illustrated embodiment, only the first connecting element 10 is designed as two parts, while the second connecting element 20 is a single piece. Of course, the second connecting element on the running rail can also be designed as two parts, and the connecting elements on the guide rail can be designed as a single piece or two parts.

[0052] Guide rail 2, center rail 3, and running rail 4 are preferably made of bent or formed sheet metal that has been stamped and bent. Connecting elements 10 and 20 are preferably made of plastic or composite materials composed of different materials.

[0053] List of reference numerals 1. Pull out the guide. 2 guide rails 3. Middle Track 4. Running track 5 deflection rollers 6. Install web plate 7. Web 8. Supporting web 9. Bending section 10 Connecting elements Part 11 12 parts 13 recess 14. Protrusion 15 Openings 16. Clip-on device 17. Web 18 Webs 19. Buckle protrusion 20 Connecting elements 21. Buckling device 22 Stop components 23 slots 24 end face 25. Accommodation section Section 26 27 channels 28 areas 29 entrance slope 30 rack 31 Retainer 32 Retainer 33 Fixed Section 34 Stop components 35 bearing 40 base 41 legs 42 legs 43. Bend 44 Bridged web 45 recess 46 recess 47. Piece splicing 48 Bridged web 49 Stop components 50 Flexible deflection element 51 Connecting Section 52 Web 53. Web 54 corner Section 55 56 rollers D diameter H represents height.

Claims

1. A pull-out guide (1), comprising: - Guide rail (2), which can be mounted on the furniture body via mounting web (6), - A running rail (4) for fixing to the drawer, the running rail being movably mounted relative to the guide rail (2). - A middle rail (3), which is movably mounted between the guide rail (2) and the running rail (4), - First and second bearings (35), the first and second bearings having first and second deflection rollers (5), flexible deflection elements (50) being guided around the first and second deflection rollers, wherein the bearings (35) are arranged in the front end region and the rear end region of the middle rail (3). - At least two connecting elements (10, 20) are fixedly connected to the flexible deflection element (50), and at least one stationary first connecting element (10) is fixedly connected to the guide rail (2), and at least one second connecting element (20) is fixedly connected to the running rail (4) and is capable of moving together with the running rail. The feature is that the middle rail (3) includes a section with two downwardly projecting webs (52, 53) in a cross section perpendicular to the longitudinal direction, and the first and second deflection rollers (5) are arranged between the two downwardly projecting webs (52, 53).

2. The pull-out guide according to claim 1, characterized in that, The first and second deflection rollers (5) are rotatably mounted on a bearing (35) of one of the two downwardly projecting webs (52, 53).

3. The pull-out guide according to claim 1 or 2, characterized in that, Two deflection rollers (5) are mounted on a web (52) that is away from the mounting web (6).

4. The pull-out guide according to any one of the preceding claims, characterized in that, The flexible deflection element (50) is arranged together with the second connecting element (20) above the middle rail (3) in the gap between the middle rail (3) and the running rail (4).

5. The pull-out guide according to any one of the preceding claims, characterized in that, The positioning and fixing device for the second connecting element (20) is integrally formed with the running rail (4).

6. The pull-out guide according to any one of the preceding claims, characterized in that, The first connecting element (10) is arranged below the downwardly projecting web (52) of the middle rail (3).

7. The pull-out guide according to any one of the preceding claims, characterized in that, At least one of the two connecting elements (10, 20) is welded to the flexible deflection element (50).

8. The pull-out guide according to any one of the preceding claims, characterized in that, The first connecting element (10) is fixed to the guide rail (2) by the first snap-fit ​​device (16), and / or the second connecting element (20) is fixed to the running rail (4) by the second snap-fit ​​device (21).

9. The pull-out guide according to claim 8, characterized in that, The first snap-fit ​​device (16) and / or the second snap-fit ​​device (21) include a snap-fit ​​web that is bendable.

10. The pull-out guide according to any one of the preceding claims, characterized in that, At least one connecting element (10, 20) includes an overload clutch that allows relative movement between the connecting element (10, 20) and the guide rail (2) or the running rail (4) when the force is too large in the pull-out direction or the opposite pull-out direction.

11. The pull-out guide according to any one of the preceding claims, characterized in that, The stop (49) is integrally formed with the running rail (4), and the stop restricts the movement of the second connecting element (20) in the longitudinal direction of the running rail (4) during installation.

12. The pull-out guide according to any one of the preceding claims, characterized in that, The connecting piece (47) is integrally formed with the running rail (4), and the second connecting element (20) is fixed between the connecting piece (47) and the section of the running rail (4).

13. The pull-out guide according to any one of the preceding claims, characterized in that, A channel (27) is formed on the bottom side of the second connecting element (20), and a portion of the tab (47) is engaged in the channel.

14. The pull-out guide according to any one of the preceding claims, characterized in that, At least one protrusion (14) is integrally formed with the guide rail (2), and the first connecting element (10) is mounted on the protrusion.

15. The pull-out guide according to any one of the preceding claims, characterized in that, The first connecting element (10) is inserted into the recess (13) in the guide rail (2).

16. The pull-out guide according to claim 8, characterized in that, Two snap-fit ​​devices (16) in the form of snap-fit ​​webs are formed on the first connecting element (10), the snap-fit ​​webs engaging behind the edge of the recess (13).

17. The pull-out guide according to any one of the preceding claims, characterized in that, The first connecting element (10) and / or the second connecting element (20) include two parts (11, 12), and the second part (12) has a rack (30), and the first part (11) has a snap-fit ​​receiving portion for the rack (30).

18. The pull-out guide according to any one of the preceding claims, characterized in that, The outer diameter (D) of the deflection roller (5) is greater than the vertical height (H) of the downwardly protruding web (52, 53), and the deflection roller (5) is mounted on the downwardly protruding web.

19. A pull-out guide (1), comprising: 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), wherein the guide rail, the running rail, and the middle rail are movable relative to each other via rolling elements, wherein two deflecting rollers (5) are mounted on the middle rail (3), a flexible deflecting element (50) is circumferentially guided on the deflecting rollers, and the deflecting element (50) is fixed to the guide rail (2) via a first connecting element (10) and fixed to the running rail (4) via a second connecting element (20), characterized in that the first connecting element (10) is fixed to the guide rail (2) by a first snap-fit ​​device (16), and / or the second connecting element (20) is fixed to the running rail (4) by a second snap-fit ​​device (21).

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