Pull-out guide, pull-out device and method for mounting self-closing mechanism

Abstract

A pull-out guide (2) comprises a fixed guide rail (7) and a movable running rail (8), and optionally a middle rail (16) for extending the pull-out path and a self-closing mechanism (10, 10 ') for retracting the running rail (8) into a closed position, the self-closing mechanism (10, 10') comprising a housing (12, 12 ') with a guide rail (13) along which the guide rail (13) is arranged in the housing (12, 12'). A driver (11) pretensioned by a force accumulator (21, 21 ') can be moved between two end positions, which driver can be coupled to the running rail (8) by means of an actuator (18), and wherein the housing (12, 12') with its underside rests on the guide rail (7) and is fixed to a profile or recess of the guide rail (7) by means of a plurality of fastening points on the underside, wherein the housing (12, 12 ') of the self-closing mechanism (10, 10') has a top side which has the same fastening point as the bottom side, such that the self-closing mechanism (10, 10 ') can also be mounted on the guide rail (7) of the pull-out guide (2) in such a manner that the top side faces downwards and rotates 180 DEG about an axis parallel to the pull-out direction. The invention also relates to a pull-out device and to a method for installing a self-closing mechanism (10, 10 ').

Description

Technical Field

[0001] This invention relates to a pull-out guide having a fixed guide rail and a movable running rail, and optionally a middle rail for extending the pull-out stroke, and a self-closing mechanism for retracting the running rail to a closed position, wherein the self-closing mechanism has a housing with a guide rail inside, along which a drive member pre-tensioned by an accumulator can move between two end positions, the drive member being coupled to the running rail via an actuator, wherein the housing is placed on the guide rail with its bottom side and fixed to a shaped portion or groove of the guide rail by a plurality of fastening points on the bottom side. The invention also relates to a pull-out device and a method for mounting the self-closing mechanism to the guide rail of the pull-out guide. Background Technology

[0002] DE 10 2017 128 747 A1 discloses a motion mechanism for a guide system, wherein a base housing is fixed to the main guide rail of the guide system by a fastening device. The base housing has a receiving portion into which a pin fixed to the guide rail is inserted, the pin laterally projecting from the guide rail into the space between two guide systems arranged on a drawer. The assembly of the base housing and the fixing of the pin are relatively complex, although the base housing can be used for both right-handed and left-handed guide systems. Furthermore, the required installation space inside the guide rail is considerable, and this motion mechanism cannot be used for guide systems where other components are movably arranged beside the guide rail. Summary of the Invention

[0003] Therefore, the object of the present invention is to provide a pull-out guide, a pull-out device, and a method by means of which a self-closing mechanism can be installed on right-hand and left-hand pull-out guides and can achieve effective installation of the self-closing mechanism on a guide rail.

[0004] This objective is achieved by a pull-out guide having the features of claim 1, a pull-out device having the features of claim 11, and a method having the features of claim 14.

[0005] In the pull-out guide according to the invention, the housing of the self-closing mechanism is fixed to the fixed guide rail of the pull-out guide, wherein the housing rests on the guide rail with its bottom side and is fixed to the shaped portion or groove of the guide rail by a plurality of fastening points on the bottom side. The housing of the self-closing mechanism has a top side with the same fastening points as the bottom side, so that the self-closing mechanism can also be mounted on the guide rail of the pull-out guide with its top side facing down and rotated 180° about an axis parallel to the pull-out direction. This allows the housing of the self-closing mechanism to be used for both right-handed and left-handed pull-out guides, thereby allowing the self-closing mechanism to be installed in a compact design, since the bottom side of the housing of the self-closing mechanism rests directly on and is fixed to the guide rail. On the one hand, this achieves a space-saving design; on the other hand, the self-closing mechanism can be effectively installed with a few installation steps.

[0006] Preferably, the housing is clamped and fixed to the guide rail. For this clamping and fixing, flexible fasteners, such as webs or hook-shaped portions, can be provided on the guide rail or housing, which are connected to each other by bending.

[0007] To avoid incorrect installation and reduce the number of parts, the housing of the self-closing mechanism can be designed to be mirror-symmetrical with respect to the central horizontal plane in the installation configuration. Regardless of whether the self-closing mechanism is installed on the right-hand or left-hand pull-out guide, the driving component is always in the predetermined position.

[0008] The fastening points for securing the housing preferably include at least one web plate, which engages with a hook integrally formed with the guide rail. This allows the housing to be effectively mounted to a pull-out guide, preferably to multiple web plates of the guide rail, which can be efficiently manufactured by stamping and bending.

[0009] The drive element may have a receptacle for actuator engagement, which is open on the side facing the running rail, allowing the drive element to pivot about a vertical axis along a curved section of the guide rail. The receptacle of the drive element is preferably arranged vertically on both sides of the housing to expose it for actuator engagement. The receptacle on the drive element may be sized such that the actuator can be inserted into the receptacle with clearance in the vertical direction, thereby compensating for assembly tolerances. The drive element may be guided by a first guide rail on the bottom side of the housing and a second guide rail on the top side of the housing, wherein the guide rails may optionally be formed by grooves, webs, or other guiding elements. To optimize the guide rails and achieve a compact design, the guide rails may be formed by at least one rib protruding into the interior space of the housing; preferably, ribs are formed on both the bottom and top sides, and these ribs are surrounded by the drive element. The rib may have a straight end and a curved end, at which the drive element can be stopped in a parking position with the accumulator tensioned.

[0010] The guide rail preferably has vertical legs integrally formed therewith for fixing to the side wall of the furniture body or household appliance; a guide section for a rolling element, for moving the center rail or running rail; and a base between the guide section and the vertical legs, on which a plurality of shaped portions, particularly hooks, are formed for fixing a self-closing mechanism. This allows the self-closing mechanism to be mounted in a protected manner between the vertical legs and the guide section.

[0011] The pull-out guide is preferably used as a bottom-mounted guide rail. The pull-out guide is mounted directly below the bottom of the drawer, on the side of the side frame facing away from the furniture body, with the drawer bottom supported by the running rail. This means that at least the lower end of the side frame, preferably a double-walled side frame, also extends into the mounting space, located between the guide rail vertical legs for fixing to the side wall of the furniture body or appliance and the guide rail section with rolling elements. Therefore, during the pull-out or closing movement, the (double-walled) side frame operates above the self-closing mechanism, further maximizing the use of the mounting space and protecting the self-closing mechanism in the closed position.

[0012] The housing of the self-closing mechanism preferably includes at least one through-hole serving as a fastening point, into which the hook of the guide rail protrudes. The through-hole for the hook is preferably located on the bottom side of the housing, and another through-hole, preferably overlapping, is provided on the top side of the housing, thereby forming a free space extending from the bottom to the top side within the housing. This free space is the open area of ​​the through-hole formed by the edges of the top and / or bottom of the housing. Adjacent to the through-hole is a web, which, in the assembled position, is engaged by the hook. At least a portion of the hook protrudes from the free space into the housing of the self-closing mechanism. In this installed position, at least a portion of the hook is covered by the opposing web of the through-hole on the top side of the housing.

[0013] In the method of the present invention for mounting a self-closing mechanism to a fixed guide rail of a pull-out guide, the self-closing mechanism has a housing having at least one through-hole extending from a top side to a bottom side. First, the housing of the self-closing mechanism is positioned on the guide rail, such that a hook protruding from the guide rail engages in the through-hole on the bottom side of the housing. Then, the housing is moved relative to the guide rail, preferably in the pull-out direction or against the pull-out direction, such that the hook engages a web on the housing adjacent to the through-hole. In a further step, a tool is inserted from above into the through-hole to bend the hook onto the web of the housing. This allows the housing to be effectively secured by bending at least one hook onto the web of the housing, even in space-constrained conditions.

[0014] Preferably, a plurality of through holes may be provided on the housing, each through hole engaging at least one hook, which is simultaneously bent to the web of the housing. Furthermore, at least one hook may be laterally engaged by the web of the housing, thereby also achieving fixation in a direction perpendicular to the pull-in direction. The bending of the hook can be performed particularly efficiently by a machine equipped with one or more punches, each punch engaging into the through hole to bend a hook.

[0015] Another advantage is that an embossed portion is formed on the guide rail, and the housing of the self-closing mechanism is aligned with the guide rail via this embossed portion during positioning. This embossed portion can engage with a receiving portion or a through-hole. The embossed portion serves to pre-position the housing of the self-closing mechanism in its final installation position and prevents the housing from moving on the hook of the guide rail in the opposite installation direction. Other positioning or fastening devices, such as mushroom head and keyhole connections, can also be provided. Attached Figure Description

[0016] The present invention will now be described in more detail with reference to several embodiments and accompanying drawings, wherein:

[0017] Figure 1 A perspective view of furniture with a pull-out mechanism is shown; Figure 2 A perspective view of the pull-out guide according to the present invention is shown; Figure 3A and Figure 3B Show Figure 2 Two views of the pull-out guide during drawer component installation; Figures 4A to 4C Showing the use of Figure 2 Multiple views of the self-closing mechanism of the pull-out guide; Figures 5A to 5C Multiple views of the modified self-closing mechanism are shown; Figure 6A and Figure 6B Two views are shown illustrating the self-closing mechanism in its intermediate position on the guide rail during installation; and Figure 7A and Figure 7B Two views of the self-closing mechanism in Figure 6 are shown in the installation position. Detailed Implementation

[0018] Furniture 1 includes a furniture body 50, with one or more pull-out guides 2 fixed on opposite side walls. Drawer elements 3, preferably drawers, are provided on the two opposite pull-out guides 2, having a front panel 4, a rear wall 6, and two side frames 5 connecting the front panel 4 and the rear wall 6, the side frames surrounding a bottom 14. Pull-out devices can also be used alternatively in household appliances.

[0019] Figure 2A pull-out guide 2 fixed to the left side of the main body 50 is shown in detail. The pull-out guide 2 on the right side is substantially mirror-symmetrical with respect to the central vertical plane. The pull-out guide 2 includes a fixed guide rail 7, which is fixed to the side wall of the main body by vertical support legs. A center rail 16 or a movable running rail 8 is provided on the guide section of the guide rail 7, and a running track for the rolling element is formed on the guide section, on which the drawer element 3 is supported. A hook element 9 is arranged at the rear end of the running rail 8, which engages with a receiving portion provided for this purpose on the drawer element, wherein other fastening devices for fixing the drawer element 3 may also be selectively provided. A self-closing mechanism 10 is provided between the running rail 8 and the vertical support legs of the guide rail 7, which is fixed to the guide rail 7 by a housing 12.

[0020] Figure 3A and Figure 3B The pull-out guide 2 is shown during the installation of the self-closing mechanism 10 and drawer element 3. The guide rail 7 of the pull-out guide 2 has a plurality of upwardly projecting hooks 15 on a base 17 extending horizontally between a vertical support leg and a guide section equipped with a rolling element. These hooks are preferably formed by stamping and bending the guide rail 7, which is made of sheet metal. A web-shaped actuator 18 is fixed or integrally formed on the running rail 8, which can be coupled to the drive element 11 of the self-closing mechanism. The drive element 11 can move along a guide rail 13 on the housing 12 of the self-closing mechanism 10. A middle rail 16 extending the pull-out stroke is provided inside the running rail 8; this middle rail can also be omitted if necessary. In particular, Figure 3B It is clearly shown that after assembly, the side frame 5 is located above the self-closing mechanism 10 and is in a closed state, and the lower region of the side frame 5 extends into the space between the vertical support leg and the guide section with rolling elements.

[0021] Figures 4A to 4C The self-closing mechanism 10 is shown in detail. The self-closing mechanism 10 includes an elongated housing 12, particularly made of plastic, along which a drive member 11 can move along a guide rail 13. The drive member 11 includes a U-shaped receiving portion 22 into which a webbed actuator 18 can be inserted for a portion of the travel of the running rail 8. At the bent end of the guide rail 13, the actuator 18 can disengage from the drive member 11.

[0022] Figure 4B As shown, the receiving portion 22 of the drive member 11 is exposed vertically from both sides of the housing 12. This ensures that the actuator 18 can engage with the receiving portion 22 of the drive member 11 from both sides according to the mounting position of the self-closing mechanism 10. The receiving portion 22 of the drive member 11 is formed by two stop surfaces 111 and 112, with a gap between the stop surface 112 and the body of the drive member 11, allowing the stop surface 112 to be elastically pressed in. This gap can correct any misalignment of the drive member 11. For example, such misalignment may occur if the drive member 11 is retracted during assembly and the actuator 18 is not engaged with the drive member 11.

[0023] The drive element 11 is pre-tensioned to the retracted position by the accumulator 21, particularly the spring. Furthermore, a damper 19, designed as a linear damper, is installed in a housing 12 of the self-closing mechanism 10 and includes a movable piston rod 20 connected to the drive element 11. The drive element 11 includes a guide element 27 surrounding the guide rail 13.

[0024] A through hole 23 is also formed on the housing 12 of the self-closing mechanism 10, and the through hole is vertically aligned in the installation position. Two retaining webs 24 are formed at one end of the housing 12, and the retaining webs surround a semi-open through hole.

[0025] Figures 5A to 5C A modified self-closing mechanism 10' is shown, which is shorter than the original self-closing mechanism 10, for example, because the original self-closing mechanism 10' is designed for lighter weight loads on the drawer element 3. The self-closing mechanism 10' includes a housing 12', which, as in the previous embodiment, has an accumulator 21' for pre-tensioning the drive element 11 to its end position. Furthermore, a damper 19 is arranged in the receiving portion of the housing 12'. Figure 5C As shown, inwardly protruding ribs are formed on the opposite walls of the housing 12' as guide tracks 13. The ribs protrude into the internal space of the housing 12' and are surrounded by the driving member 11, so that the driving member 11 can move along the guide tracks 13. In addition, the housing 12' is designed as in the aforementioned embodiment and includes at least one through hole 23 and two retaining webs 24 located on the end faces.

[0026] The installation of the self-closing mechanism 10 or 10' on the fixed guide rail 7 of the pull-out guide 2 will be described in more detail with reference to Figures 6 and 7.

[0027] Figure 6A and Figure 6B The position of the self-closing mechanism 10' is shown, positioned on the base 17 of the fixed guide rail 7, wherein the housing 12' is positioned such that the drive member 11 can move horizontally along the guide rail 13 and pivot about a generally vertical axis at the bent end of the guide rail 13. The receiving portion 22 of the drive member 11 faces the running rail 8 (not shown). Figure 6B As shown, the housing 12' of the self-closing mechanism is positioned on the base 17 of the guide rail 7 and moves relative to the base 17, such that the hook 15 is positioned above the web 25 adjacent to the through hole 23. A hook 15 is also formed at the front through hole located between the retaining webs 24, which hooks onto the web 25 of the housing 12'. Another through hole 23 on the side facing the base 17 is filled by the embossed portion 26.

[0028] The embossing part 26 is used for pre-positioning in the final assembly position and serves as a displacement locking device for the self-closing mechanism 10 in the opening direction of the hook 15.

[0029] To secure the self-closing mechanism 10 to the guide rail 7, the tool is now engaged from above into the through-hole 23 of the housing 12', and the hook 15 is bent so that it presses against the web 25 of the housing 12'. This bending process can optionally be automated, i.e., by inserting a punch from above into the through-hole 23. This assembly step produces... Figure 7A and Figure 7B The situation shown.

[0030] The housing 12' is secured in a transverse direction perpendicular to the pull-in direction by a retaining web 24 on its front side, the retaining web being arranged around a web 25. This prevents the housing 12' of the self-closing mechanism 10 from lifting off the guide rail 7 and from moving in any other direction.

[0031] The number of hooks 15 on the through hole 23 and the guide rail 7 can be flexibly selected. In addition to the two hooks 15 shown, one hook 15 or more than two hooks 15 may also be formed on the guide rail 7.

[0032] In addition, other embossed portions 26 may be provided that engage with the through holes 23. These "fastening points" are designed identically on the top and bottom sides of the housings 12 and 12' of the self-closing mechanisms 10 and 10', so that each housing 12 and 12' can be mounted on the right-hand pull-out guide and the left-hand pull-out guide 2.

[0033] List of reference numerals 1 Furniture 2. Pull out the guide piece 3 drawer components 4. Front panel 5 side frames 6. Rear wall 7 guide rails 8. Running track 9 Hook components 10, 10' Self-closing mechanism 11 Drive components 111 Stop surface 112 Stop surface 12, 12' shell 13. Guide Track 14 Bottom 15 hooks 16 Middle Rail 17. Base 18 Actuators 19 Dampers 20 Piston Rod 21, 21' accumulator 22. Reception area 23 Through Hole 24. Maintain the web 25. Web 26 Imprinting Section 27. Guiding element 50 furniture body.

Claims

1. A pull-out guide (2) having a fixed guide rail (7) and a movable running rail (8), and optionally having a middle rail (16) for extending the pull-out stroke and a self-closing mechanism (10, 10') for retracting the running rail (8) to a closed position, wherein the self-closing mechanism (10, 10') includes a housing (12, 12') having a guide rail (13), along which a drive member (11) pre-tensioned by an accumulator (21, 21') is movable between two end positions, the drive member being coupled to the running rail (8) via an actuator (18), wherein the housing (12, 12') rests on the guide rail (7) with its bottom side and is fixed to a shaped portion or groove of the guide rail (7) by a plurality of fastening points on the bottom side, characterized in that, The housing (12, 12') of the self-closing mechanism (10, 10') has a top side that includes the same fastening point as the bottom side, such that the self-closing mechanism (10, 10') can also be mounted on the guide rail (7) of the pull-out guide (2) with its top side facing down and rotated 180° about an axis parallel to the pull-out direction.

2. The pull-out guide according to claim 1, characterized in that, The housing (12, 12') is clamped and fixed to the guide rail (7).

3. The pull-out guide according to claim 1 or 2, characterized in that, The housing (12, 12') of the self-closing mechanism (10, 10') is designed to be mirror-symmetrical with respect to the central horizontal plane.

4. The pull-out guide according to any one of the preceding claims, characterized in that, The fastening point includes at least one web (25) on the housing (12, 12'), the at least one web being engaged by a hook (15) integrally formed with the guide rail.

5. The pull-out guide according to claim 4, characterized in that, The fastening points include at least two opposing webs (25) on the housing (12, 12'), wherein a hook (15) engaging one web (25) is at least partially covered by the opposing second web (25) in the installed position.

6. The pull-out guide according to any one of the preceding claims, characterized in that, The drive member (11) has a receiving portion (22) for engaging the actuator (18), the receiving portion being open on one side toward the running rail (8), and the drive member being able to pivot about a vertical axis at a curved section of the guide rail.

7. The pull-out guide according to claim 6, characterized in that, The receiving portion (22) of the drive member (11) is exposed on both sides of the housing (12) in the vertical direction for engagement of the actuator (18).

8. The pull-out guide according to any one of the preceding claims, characterized in that, The drive member (11) is guided by a first guide rail (13) on the bottom side of the housing (12) and a second guide rail (13) on the top side of the housing (12, 12').

9. The pull-out guide according to any one of the preceding claims, characterized in that, The guide rail (13) is formed by at least one rib protruding into the interior space of the housing (12), and the drive member (11) is movable along the at least one rib.

10. The pull-out guide according to any one of the preceding claims, characterized in that, The guide rail (7) has: a vertical support leg for fixing to a side wall, a guide section having a guide rail for a rolling element, and a base (17) between the guide section and the vertical support leg, wherein a plurality of molded portions (15) are formed on the base for fixing the self-closing mechanism (10).

11. The pull-out guide according to any one of the preceding claims, characterized in that, The housing (12, 12') has at least one through hole (23) as a fastening point, and the hook (15) on the guide rail (7) protrudes into the at least one through hole.

12. A pull-out device having right-hand and left-hand pull-out guides (2), particularly pull-out guides according to any one of the preceding claims, on which a drawer element (3) is movably held, the drawer element being fixed on opposite sides to a movable running rail (8) of one of the two pull-out guides (2), wherein each pull-out guide (2) includes a fixed guide rail (7) on which a self-closing mechanism (10, 10') for retracting the drawer element (3) to a retracted position is provided, the self-closing mechanism having a drive member (11) movable along a guide rail (13), the drive member being pre-tensioned in the retraction direction by an accumulator (21, 21'), characterized in that, The self-closing mechanism (10, 10') on the right-hand pull-out guide (2) is placed on the base (17) of the guide rail (7) and has the same structure as the self-closing mechanism (10, 10') on the left-hand pull-out guide (2). The housing (12, 12') of the corresponding self-closing mechanism (10, 10') has a top side, which includes the same fastening point as the bottom side, so that the self-closing mechanism (10, 10') can also be mounted on the guide rail (7) of the pull-out guide (2) with its top side facing down and rotating 180° about an axis parallel to the pull-out direction.

13. The pull-out device according to claim 12, characterized in that, Each self-closing mechanism (10, 10') has a housing (12, 12') on which a guide rail (13) for the drive member (11) is formed, and the housing (12, 12') of the right-hand pull-out guide member (2) has the same structure as the housing of the left-hand pull-out guide member (2) and is fixed to the left-hand pull-out guide member (2) by rotating 180° about an axis parallel to the pull-out direction.

14. The pull-out device according to claim 12 or 13, characterized in that, The pull-out guide (2) and the self-closing mechanism (10, 10') are basically mirror-symmetrical with respect to the central vertical plane.

15. The pull-out device according to any one of claims 12 to 14, characterized in that, The pull-out guides (2) are all designed as bottom-mounted guide rails, and each pull-out guide (2) is installed below the bottom (14) of the drawer and inside the side frame (5).

16. A method for mounting a self-closing mechanism (10, 10') on a fixed guide rail (7) of a pull-out guide (2), wherein the self-closing mechanism (10, 10') has a housing (12, 12') having at least one through hole (23) extending from a top side to a bottom side, the method comprising the steps of: - Position the housing (12, 12') of the self-closing mechanism (10, 10') on the guide rail (7), wherein a hook (15) protruding from the guide rail (7) engages in at least one through hole (23) on the bottom side of the housing (12, 12'); - Move the housing (12, 12') relative to the guide rail (7) such that the hook (15) engages the web (25) of the housing (12, 12') adjacent to the through hole (23), and - Engage the tool from above into the through hole (23) and bend the hook (15) onto the web (25) of the housing (12, 12').

17. The method according to claim 16, characterized in that, An embossed portion (26) is formed on the guide rail (7), and the housing (12, 12') of the self-closing mechanism (10, 10') is aligned on the guide rail (7) by the embossed portion (26) during positioning.

Images