Fitting for a sliding door or a folding sliding door

Abstract

Fitting for a sliding door or a folding sliding door, with a guide rail (4) along which at least one running part is movable, which is guided on raceways (5) of the guide rail (4), wherein at least one recess (6) is provided on the guide rail (4) in which a stop (17') for the at least one running part is fixed, wherein the stop (17') is fixed on a cover (20') which engages at least partially in the recess (6), characterized in that the stop (17') and the cover (20') are fixed to each other in a snap-fit ​​connection.

Description

[0001] The present invention relates to a fitting for a sliding door or a folding sliding door, with a guide rail along which at least one running part is movable and is guided on running surfaces of the guide rail, wherein at least one recess is provided on the guide rail in which a stop for a running part is fixed.

[0002] EP 2 128 366 A2 discloses a stop for a piece of furniture that is fixed to a rail on which at least one carriage can travel. To hold such a carriage in an end position or to limit its travel, the stop is inserted into a recess in the rail by means of a projection and fixed there. This allows for easy installation of the stop; however, the recess weakens the rail. When a carriage strikes the stop, the forces are transferred from the stop to the rail, which can cause problems if the rail is weakened by a large recess.

[0003] DE 20 2005 006 931 U1 discloses a damping device for movable furniture parts, comprising an eddy current brake. The damping device can be fixed to a guide rail in order to be coupled with a movable driver.

[0004] German patent application DE 20 2013 007 992 U1 shows a shower door assembly with a self-closing mechanism mounted on a profiled cover. A damper can slow the shower door down during closing.

[0005] DE 197 41 156 A1 discloses a continuously adjustable clamping limit stop of a C-shaped guide profile rail for a movable carriage, which can be fixed by clamping screws.

[0006] EP 2 781 679 A2 discloses a braking device for a movable piece of furniture, comprising a self-closing mechanism with a driver mounted on a housing movable along a guide direction, and an activator that can be engaged with the driver. The activator is movable from an engagement position with the driver to a disengaged position and is biased towards or away from the driver by a biasing element.

[0007] DE 10 2008 012 017 A1 discloses a roller bearing for a sliding door with a stop and retaining device, which can be inserted into a running rail and locked in place by means of a screw. A similar sliding door arrangement is also shown in EP 1 028 214 A3.

[0008] It is therefore an object of the present invention to create a fitting for a sliding door or a folding sliding door in which the guide rail is reinforced in the area of ​​the stop.

[0009] This problem is solved with a fitting having the features of claim 1.

[0010] According to the invention, the fitting comprises a guide rail in which at least one recess is provided, and in which a stop for a running element is fixed. The stop is fixed to a cover that engages at least partially in the recess. This allows the cover to be positively supported in the recess and thus also to transfer forces that are transferred from the stop into the guide rail via the cover. This reduces the material stress at the contact point between the stop and the guide rail, resulting in stable support of the stop on the guide rail. According to the invention, the stop and the cover are fixed to each other in a snap-fit ​​connection.

[0011] Preferably, the cover completely covers the opening of the recess. This also prevents dirt from getting behind the guide rail through the recess. The cover can also have a projection that essentially fits snugly into the recess. Forces can then be transferred from the stop to the cover, which is supported within the recess, i.e., against the inner walls of the recess, to reinforce the recessed area on the guide rail.

[0012] Preferably, the cover has a rim that rests on the guide rail around the recess. The rim can, for example, rest on the side of the guide rail facing the furniture body, while the projection of the cover extends towards the front of the furniture.

[0013] The recess can be designed as an elongated slot. In such an elongated slot, the length can be at least four times its width. For example, such an elongated slot can be cut out for a self-closing mechanism's driver, allowing it to decelerate a carriage before it reaches its end position and hold it there. This is achieved by an activator mounted on the carriage, which acts as an engagement element, engaging with the driver of the self-closing mechanism. Thus, the longitudinal length of the recess is greater than the guide track of the driver. If such a self-closing mechanism is not installed, it can be advantageous to pre-cut a recess for such a driver into the guide rail to reduce the number of parts required. In this case, a relatively large recess in the form of the elongated slot is covered by the cover to stabilize the guide rail in the recessed area.For this purpose, the cover can rest on one side of the elongated hole on one side of the guide rail with a ridge, for example on a front of the guide rail, and on the opposite side of the elongated hole on the opposite side of the guide rail, for example on a back of the guide rail.

[0014] The guide rail preferably consists of a bent steel sheet with a thickness of less than 1.2 mm, preferably less than 1 mm. The thickness of the steel sheet can, for example, be in a range between 0.6 mm and 1 mm, preferably 0.7 mm and 0.9 mm.

[0015] For stable fixing of the stop, it can be positioned so that the guide rail is clamped between the stop and the cover. The cover can incorporate integrated fastening elements, such as a threaded sleeve or a receptacle for a nut, to secure the stop. Preferably, the stop is screwed to the cover to apply high clamping forces. Alternatively, locking mechanisms or other connecting elements can be provided between the cover and the stop.

[0016] Furthermore, it is optionally possible to design the cover as part of a housing for a self-closing mechanism, which has a movable driver that is accessible through the recess.

[0017] The invention is explained in more detail below with reference to several exemplary embodiments and the accompanying drawings. These show: Fig. 1 a perspective view of a piece of furniture with a fitting not according to the invention in the mounted position; Fig. 2 and Fig. 3 two perspective exploded views of the fitting of the Fig. 1 in a first embodiment during assembly; Fig. Figures 4 to 6B show several views of a second embodiment of a fitting not according to the invention; Fig. Figures 7 to 9B show several views of a third embodiment of a fitting not according to the invention; Fig. 10 to 12B several views of an embodiment of a fitting according to the invention; Fig. Figures 13 to 15B show several views of an embodiment of a fitting not according to the invention, and Fig. Figures 16 to 19 show several views of an embodiment of a fitting not according to the invention.

[0018] A cabinet unit 1 comprises a cabinet body with a side panel 2 and a top panel 3, to which a guide rail 4 is attached, the guide rail resting on the top panel 3 with an upper web 40. The guide rail 4 has two superimposed tracks 5 for running parts that are attached to sliding doors or folding sliding doors.

[0019] Between the two raceways 5, a recess 6 is provided in the guide rail 4, which has the form of an elongated hole and through which a movable driver 7 is accessible. The movable driver 7 can engage with an activator on a running element to decelerate the running element during a closing movement and move it into an end position. The end position is defined by a stop 10, which is fixed to the guide rail 4.

[0020] In Fig. Figure 2 shows the guide rail 4 before it is mounted on the furniture carcass. A housing 8 for a self-closing mechanism is mounted in the elongated recess 6. This housing has a guide track for the movable follower 7. The follower 7 is coupled to at least one spring and a damper to decelerate a running element during the closing movement and pull it into an end position. The follower 7 is movable within the elongated recess, and an elongated opening 9 is arranged in the housing 8, essentially aligned with the recess 6. The opening 9 corresponds to the guide track for the follower 7.

[0021] To fix the stop 10, a through-hole 11 is formed in the stop 10, through which a screw 12 passes. The screw 12 engages in a threaded sleeve 14, which is arranged on the housing 8. This allows the stop 10 to be screwed into the housing 8.

[0022] The housing 8 rests against the rear of the guide rail 4 with a rim 15, wherein a web 16 is provided on one side extending from the rim 15, which can engage the recess 6 in a form-fitting manner and comes to rest against a front of the guide rail 4, as shown in Fig. Figure 3 shows that by screwing the stop 10 to the housing 8, the guide rail 4 is clamped between the stop 10 and the housing 8, with the housing 8 being supported by the web 16 on a front face of the guide rail 4. This reinforces the guide rail 4 in the area of ​​the recess 6, particularly when the running element impacts a contact surface 13 on the stop 10, thus transferring forces from the stop 10 to the guide rail 4.

[0023] For this purpose, a screw 12 is passed through a through-opening 11 and screwed into a threaded sleeve 14 arranged on the housing 8. Alternatively, the nut thread can be formed directly on the housing 8 or can be formed into the housing 8 by a self-tapping screw. In these cases, the threaded sleeve 14 can be omitted.

[0024] The guide rail 4 preferably consists of a bent sheet steel, for example with a thickness between 0.7 mm and 0.9 mm, and is manufactured in large quantities so that a self-closing mechanism can optionally be fitted, as in a first embodiment in the Fig. Figures 1 to 3 are shown. If a piece of furniture is to be assembled without such a self-closing mechanism, the recess 6 weakens the stability of the guide rail 4. To avoid strength problems when a force acts on a stop, according to... Fig. In a second embodiment, a cover 20 is provided which can be inserted into the recess 6 on the guide rail 4. The cover 20 has a projection that engages in the recess 6 in a form-fitting manner. A rib 22 is provided on one narrow side of the cover 20, projecting laterally and perpendicularly from the base surface of the cover 20, where the base surface is the surface that rests on the back of the guide rail 4. This rib 22 can engage behind the recess 6 in a form-fitting manner and bear against a front surface of the guide rail 4, i.e., the side facing a sliding door. The cover 20 also has a rim 21 that surrounds the projection in a U-shape and rests against a back surface of the guide rail 4, i.e., the side facing the furniture carcass.The cover 20 also has an opening 23 for a cylinder screw 26 and a receptacle for a nut 25.

[0025] If the guide rail 4 is to be mounted without self-closing, the cover 20 is inserted into the recess 6 and a stop 17 is mounted on the cover 20. The stop 17 has an opening 18 for this purpose, which serves to receive the head of the socket head cap screw 26, as can be seen from the Fig. 5, Fig. 6A and Fig. As can be seen in Figure 6B. The stop 17 also has two arms 19, which serve to engage a projection on a running part. The socket head cap screw 26 extends through the stop 17 and the cover 20, in which the nut 25 is held in a receptacle in a form-fitting manner, so that the socket head cap screw 26 can be easily screwed into the nut 25 to clamp the guide rail 4 between the stop 17 and the cover 20. This clamping action, combined with the cover 20 filling the recess 6, reinforces the guide rail 4, enabling the impact forces to be transferred into the guide rail 4.

[0026] In the Fig. Figures 7 to 9B show another embodiment of a cover 20, which is mounted on a recess 6 of the guide rail 4. As in the previous embodiment, a socket head cap screw 26 is provided, which is inserted into the stop 17 to clamp the guide rail 4 between the cover 20 and the stop 17. However, unlike the previous embodiment, the cover 20 does not have a nut 25 on a fastening section 24, but instead has a thread formed in it or a threaded sleeve inserted into it. This allows the socket head cap screw 26 to be screwed directly into the thread on the cover 20. Otherwise, the shape of the cover and the stop 17 corresponds to the previous embodiment.

[0027] In the Fig. Figures 10 to 12B show a modified fitting in which a cover 20' is mounted on a recess 6 of a guide rail 4. The cover 20' is essentially the same as the cover 20 and has a web 22 that engages behind the recess 6 on a front side and rests on the guide rail 4. A U-shaped rim 21 rests on a rear side of the guide rail 4. On a side opposite the web 22, the cover 20' has a detent receptacle 27, which serves to secure a stop 17'. The stop 17' has two arms 19 for engaging a projection of a running element. Perpendicular to the arms 19, preferably at right angles, two spring-loaded detent lugs 28 with undercut projections are provided, which are inserted into the detent receptacle 29 of the cover 20' to mount the stop 17', as shown in Fig. As shown in Figure 12B. During assembly, the undercut projections engage behind the back of the cover 20', whereby the guide rail 4 can be essentially frictionally fixed by the locking of the stop 17' to the cover 20'.

[0028] In the Fig. Figures 13 to 15B show a further embodiment of a fitting in which a cover 20 is mounted on a recess 6 of the guide rail 4. The stop 17 is fixed by means of a screw 29, which has a self-tapping thread. The screw 29 is screwed into an opening 18' in the stop 17, which has a smaller diameter than the outer diameter of the screw 29. Furthermore, an opening 36 is provided in the cover 20, which also has a smaller diameter than the thread of the screw 29, so that the threads of the screw 29 screw into the material of the cover 20. Fig. 15A and Fig. Figure 15B shows a mounted position in which the guide rail 4 is clamped between the stop 17 and the cover 20.

[0029] In the Fig.Figures 16 to 19 show another embodiment of a cover 20, which is mounted on the recess 6 of the guide rail 4. The cover 20 is integrally formed with the stop 30 and can be attached to the recess 6 from the front. Two webs 35 are provided on the rear side of the cover 20, which engage in the recess 6 and support the cover 20 against the inner walls of the recess 6 by resting on the longitudinal inner sides of the recess 6. To secure the stop 30, a socket head cap screw 26 is inserted into an opening 31 of the stop 30. The screw passes through the stop 30 and the recess 6, and through an opening 33 in a plate 32 on the rear side of the guide rail 4, where it is secured with a lock nut 34. By tightening the cylinder screw 26 and the locking nut 34, the guide rail 4 is clamped between the plate 32 and the stop 30.In this embodiment as well, the recess 6 is essentially filled in a form-fitting manner by the cover 20.

[0030] The cover 20 can be flush-mounted on the front of the guide rail 4, so that the installation of the cover 20 also results in a visually appealing appearance. The material of the cover 20 can be plastic, metal, or a combination of these materials. The cover 20 can also be made of multiple parts, although for assembly purposes, a one-piece design of the cover 20 is preferred. Reference symbol list 1 cabinet furniture 2 side wall 3 Topsoil 4 guide rail 5 Career 6 recess 7 drivers 8 cases 9 Opening 10 strikes 11. Passage opening 12 screws 13 Contact area 14 Threaded sleeve 15 Rand 16 Bridge 17, 17' stop 18, 18' Opening 19 Arm 20, 20' cover 21 Rand 22 Bridge 23 Opening 24 Fastening section 25 mother 26 Cylinder screw 27 Rastaufnahme 28 Resting Footbridge 29 screw 30 strikes 31 Opening 32 plate 33 Opening 34 Lock nut 35 Bridge 36 Opening 40 Bridge

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