Sliding door fitting

Abstract

A sliding door fitting for furniture (1) comprises a guide rail (10) formed from at least two rail sections (10a, 10b), which can be fixed to a furniture body (2) and along which at least one guide section (13, 14) is guided. This guide section can be fixed to a sliding door (3, 4) to keep the sliding door movable and guided on the furniture body (2). In a joint area between the at least two rail sections (10a, 10b), at least one support roller (24, 26) is fixed to the furniture body (2) and rotatably mounted. This support roller provides support to the at least one guide section (13, 14) when the door traverses the joint area of ​​the guide rail (10). This allows the joint area between the at least two rail sections (10a, 10b) to be traversed smoothly and without noise.

Description

[0001] The present invention relates to a sliding door fitting for furniture with a guide rail formed from at least two rail parts, which can be fixed to a furniture body and along which at least one guide part is guided, which can be fixed to a sliding door in order to keep it movable and guided on the furniture body, wherein the at least two rail parts are connected to one another in the butt area via a butt connector.

[0002] DE 10 2019 101 334 A1 shows a sliding door fitting for furniture in which a guide rail is composed of at least two rail parts that are aligned in the joint area. To prevent deflection of the rail parts in the joint area, a guide element is mounted on the joint area, forming a guide track laterally next to the track of the guide rail. This guide element allows a roller to roll along the guide track in the joint area, thus providing guidance in the joint area. To install the guide element, the rail parts are provided with recesses in the joint area, making the manufacture and assembly of the sliding door fitting complex. WO 2021 / 023772 shows another similar sliding door fitting.

[0003] EP 3 653 821 discloses a guide device for sliding doors in which a guide element is inserted into the track in a joint area between two rail sections, allowing guidance to be provided either by a main roller or an auxiliary roller. The provision of two rollers next to each other results in a bulky design and complex assembly. Another disadvantage of the upwardly open guide rails is that they become dirty over time, which adversely affects smooth running.

[0004] It is therefore an object of the present invention to provide an improved sliding door fitting which ensures smooth guidance in the joint area between two rail parts.

[0005] This object is achieved with a sliding door fitting having the features of claim 1.

[0006] In the sliding door fitting according to the invention, at least one support roller is fixable and rotatably mounted on the furniture body in a joint area between the at least two rail parts, by means of which support roller the at least one guide part can be supported when traveling over the joint area of ​​the guide rail. This allows a stationary support roller to be used to bridge any unevenness in the joint area between the two rail parts, in that the support roller supports the guide part when the at least one guide part moves over the joint area. A corresponding guide is essentially provided on an underside of the guide part so that even after extended periods of use, no impairments due to soiling occur. In addition, the transition between the two rail parts can be optimized.

[0007] Preferably, a guide track is formed on the at least one guide part, which can roll on the support roller. The guide track can have a length between 1 cm and 8 cm, in particular 2 cm and 5 cm, in order to be able to support the guide part over a certain distance. The guide track can have a curved section for raising and lowering the guide part, so that when traveling over the impact area, the guide part is first raised and then lowered. Alternatively, it is also possible to design the guide track only linearly or with a slight angle.

[0008] In the embodiment according to the invention, the at least two rail parts are connected to one another in the butt area via a butt connector. For easy assembly, the at least one support roller is rotatably mounted on the butt connector. This allows the two rail parts to be secured as a unit to a furniture carcass, for example to a base or top panel. The butt connector can form a spacer so that the two rail parts are arranged at a predetermined distance from one another. Part of the butt connector is thus located as an extension of a guide on the two rail parts. This transition area can optionally have a depression or recess, since in this area the guide part is supported by the support roller.

[0009] Preferably, a butt connector is mounted between the rail parts, on which at least two support rollers are rotatably mounted, wherein at least one of two guide parts can be supported via each support roller. A first support roller can thus support a first guide part along a first guide on the guide rail, and a second support roller can support a second guide part that can be moved along a second guide on the guide rail. This allows sliding doors arranged at different levels to be guided on the guide rail in a compact manner. The two support rollers can be arranged one above the other in the vertical direction, so that the required installation space in the horizontal direction is minimal.

[0010] Preferably, at least one guide roller is provided on the at least one guide part, which can roll along a track on the guide rail. This allows the guide part to be moved along the guide rail with minimal force. Instead of at least one guide roller, at least one sliding element can also be used to guide the guide part along the guide rail.

[0011] The guide rail preferably features two spaced-apart guides, each for a guide part. The guides can be arranged vertically one above the other to minimize installation space.

[0012] If the guide part does not support the weight of a sliding door, each guide part is preferably mounted vertically on a mounting element fixed to the sliding door. This allows the guide part to move smoothly along the guide rail, and the flexibility also allows for compensation of assembly tolerances. If, however, the weight of the sliding door is supported by the guide part, it is preferably rigidly fixed to the sliding door.

[0013] A piece of furniture according to the invention comprises a furniture body, in particular in the form of a cabinet, and at least one sliding door, which is mounted for movement on the furniture body via a sliding door fitting. Each sliding door can be suspended from a guide rail on a top panel via at least one guide rail, and the guide rail is fixed to a floor of the furniture body to ensure the alignment of the sliding doors. The arrangement according to the invention of at least one support roller in the joint area between two rail parts can be provided both on the guide rail on the floor and optionally on the guide rail on the top panel.

[0014] The invention will be explained in more detail below using an exemplary embodiment with reference to the accompanying drawings. They show: Figure 1 shows a perspective view of a piece of furniture according to the invention; Figure 2 shows a detailed view of the piece of furniture according to the invention. Figure 1in the area of ​​a guide rail; Figures 3A and 3B show two views of the guide rail in the joint area during assembly; Figures 4A to 4C show several views of a first guide part for a front sliding door; Figures 5A to 5C show several views of a second guide part for a rear sliding door; Figures 6A to 6C show several views of a profile connector without a guide rail; Figures 7A to 7C show several views of the sliding door fitting with the guide parts spaced from the joint area; Figures 8A to 8C show several views of the sliding door fitting with the guide part in the joint area, and Figure 9 shows several views when a guide part passes over the joint area.

[0015] A piece of furniture 1 is designed as a cabinet and comprises a furniture body 2, on which a front sliding door 3 and a rear sliding door 4 are movably mounted at an opening in the furniture body 2. It is also possible to provide more than two sliding doors 3 and 4 on the furniture body 2 in order to close an opening. A guide rail 5 is fixed to a top panel 8 of the furniture body 2, on which the front sliding door 3 is suspended via guide parts 6 and the rear sliding door 4 is suspended via guide parts 7.

[0016] In Figure 2 A sliding door fitting is shown on the furniture 1, which is arranged on a base 9 of the furniture body 2. The sliding door fitting comprises a guide rail 10 fixed to the base 9, on which two superimposed guides 11 and 12 are formed. The guide rail 10 is fixed to an end face of the base 9 or a base.

[0017] The front sliding door 3 has a guide part 13 in its lower area, by means of which the sliding door 3 is guided along the guide 11. For this purpose, a guide roller 15 is rotatably mounted on the guide part 13, which rolls along a track on the guide 11. Similarly, the rear sliding door 4 is provided with a guide part 14, on which a guide roller 16 is rotatably mounted, which rolls along the guide 12. Instead of the guide rollers 15 and 16, sliding elements can also be arranged along the guides 11 and 12, alternatively or in combination with these.

[0018] Furthermore, two support rollers 24 and 26 are provided on the furniture body, by means of which the guide parts 13 and 14 can be supported over a certain distance.

[0019] In Figure 3Athe guide rail 10 is shown during assembly. The guide rail 10 consists of at least two rail parts 10a and 10b, which are connected to one another in a butt area via a butt connector 20. The butt connector 20 comprises pins 21 protruding on opposite sides, which are inserted into a cavity at an end section 19 of the guides 11 and 12. The end sections 19 taper towards the butt area, but can also be formed with a constant cross-section across the guides 11 and 12. A plate-shaped spacer 22 is provided between two pins 21, which is arranged between the two end sections 19 and specifies the distance between the two rail parts 10a and 10b in the butt area.

[0020] The butt connector 20 comprises a lower holder 23 on which a lower support roller 24 is rotatably mounted. Furthermore, an upper holder 25 is provided on which an upper support roller 26 is rotatably mounted.

[0021] In Figure 3B The assembled position of the butt connector 20 is shown, which is arranged in the joint area between the two rail parts 10a and 10b. It can be seen that the end sections 19 of the two guides 11 and 12 taper towards the spacer 22, thus forming an upper section of a guide track in a trough shape. Optionally, this section can also be linear.

[0022] In the Figures 4A to 4Cthe guide part 13 for the front sliding door 3 is shown. The guide part 13 comprises a mounting element 30, in particular a mounting plate, which is fixed to a rear side of the front sliding door 3. A holding element 31 is slidably guided on the mounting element 30, so that the guide part 13 can move vertically relative to the sliding door 3. The holding element 31 is connected via a horizontal connecting section 32 to a further holding part 33, on which the guide roller 15 is rotatably mounted. The guide roller 15 is surrounded by a bracket 34, to which an attachment 35 with a guide track 36 is fixed. For this purpose, the attachment 35 is connected to two pins 37, which pass through openings 39 in the attachment 35 and protrude laterally from the bracket 34. As a result, the attachment 35 is fixed between the pins 37 and a holding section 38 on the top side of the bracket 34.Optionally, the attachment 35 can also be formed integrally with the holding part 33 or fixed to the holding part 33 via other fastening means.

[0023] Furthermore, a protruding web 17 is formed on the holding part 33, which engages behind the guide roller 15 below and laterally and thus prevents the sliding door 3, in the mounted position, from being movable together with the guide part 13 in a direction towards the furniture body 2.

[0024] In the Figures 5A to 5Cthe guide part 14 for the rear sliding door 4 is shown. The guide part 14 also comprises a plate-shaped mounting element 40, which can be fixed to the rear of the sliding door 4 and on which a holding part 41 is guided so as to be displaceable in the vertical direction. The holding part 41 comprises a protruding bracket 42, on which the guide roller 16 is rotatably mounted. For this purpose, an axle 43 is provided on the bracket 42. Furthermore, an attachment 45 is fixed to the bracket 42, which engages over the guide roller 16. The attachment 45 is held to the bracket 42 via two pins 47. A guide track 46 is formed on an underside of the attachment 45, along which the support roller 26 can roll. The attachment 45 can optionally also be formed integrally with the bracket 42 or the holding part 41 or can be fixed to it via other fastening means.A protruding web 18 is also provided on the holding part 41, which is arranged below the guide roller 16 and thus prevents the rear sliding door 4 from being lifted upwards.

[0025] In the Figures 6A to 6C The butt connector 20 for connecting the rail parts 10a and 10b is shown. The upper support roller 26 on the holder 25 and the lower support roller 24 on the holder 23 are connected to one another via a flexible web 27, which elastically arranges the two holders 23 and 25 under load to compensate for tolerances. The support rollers 24 and 26 can be made of the same or a different material than the holders 23 and 25, in particular of a softer elastomer material to prevent noise. Optionally, the butt connector 20 can be manufactured in one piece using a two-component injection molding process if sliding elements are used instead of the guide rollers 15 and 16.

[0026] In Figure 7AThe sliding door fitting is shown on the furniture body 2 in an area spaced from the abutment area. The guide roller 15 on the guide part 13 rolls on the guide 12, while the guide roller 16 on the guide part 14 rolls on the guide 11. The web 18, in the same way as the web 17 relative to the sliding door 3, limits the movement of the sliding door 4 together with the guide part 14 in a direction toward the furniture body 2.

[0027] In the detailed view of the Figure 7B It can be seen that the guide track 46 is arranged at least partially below an upper side of the support roller 26. The guide track 46 is located at a distance from the support roller 26 in the longitudinal direction of the guide rail 10.

[0028] In Figure 7C it is shown that the guide roller 16 rests on the track of the guide 12 and thus rolls on it.

[0029] In Figure 8AThe position is shown when the guide parts 13 and 14 each move over the joint area between the rail parts 10a and 10b and the joint connector 20. In this position, the attachment 45 is supported on the guide part 14 via the support roller 26, which rolls along the guide track 46. As shown in the detailed view of the Figure 8B As can be seen, the attachment 45 is raised when the support roller 26 is moved over, since the guide track 46 is curved downwards. By raising the attachment 45, the guide part 14 is also displaced upwards relative to the mounting element 40.

[0030] As in Figure 8CAs can be seen, the upward movement of the guide part 14 slightly lifts the guide roller 16 from the track of the guide 12, so that at least over part of the path of the support roller 26 along the guide track 46, the guide is shifted from the guide roller 16 to the support roller 26. The lifting movement of the guide roller 16 is slight, for example, between 0.5 and 5 mm, so that lateral guidance is still ensured despite the lifting movement due to the grooved shape of the guide roller 16. The lifting of the lower guide part 13 via the guide track 36 on the support roller 24 takes place in the same way as by moving the guide track 46 along the support roller 26.

[0031] In Figure 9the different positions of the guide part 14 are shown when traveling over the butt area of ​​the guide rail 10, which is not shown here for the sake of simplicity. On the left-hand side, the guide part 14 moves with the guide roller 16 to the butt connector 20, and the upper support roller 26 provided on the butt connector 20 comes into contact with the guide track 46, which is curved downwards and has an ascending and a descending area that is curved in the middle area. Alternatively, the middle area can also be designed as a linear horizontal line. After the guide track 46 hits the support roller 26, this shape of the guide track 46 raises the attachment 45 with the guide part 14 until the support roller 26 travels over the lowest area of ​​the guide track 46, as can be seen in the middle illustration.Subsequently, the support roller 26 comes into contact with a sloping area of ​​the guide track 46 until the contact between the support roller 26 and the guide track 46 breaks off and the guide roller 16 now rolls on the guide 12 of the guide rail 10.

[0032] The guide track 46 can have a length in the longitudinal direction of the guide rail 10 preferably between 1 cm and 5 cm, so that in the joint area of ​​the two rail parts 10a and 10b, the support roller 26 takes over the vertical guidance of the guide part 14. The guidance of the other guide part 13 for the front sliding door 3 takes place in the same way.

[0033] In the illustrated embodiments, the guideways 36 and 46 are curved downwards, so that the guide parts 13 and 14 are raised when passing over the joint area. It is of course also possible to have only a slight curvature or to omit it entirely in order to achieve the most linear movement of the guide parts 13 and 14.

[0034] In the illustrated embodiment, the butt connector 20 with the support rollers 24 and 26 is arranged on the lower guide rail 10. It is of course also possible to design the upper guide rail 5 with two rail sections equipped with a butt connector with support rollers to support the guide sections 6 and 7 when passing over the butt area, whereby the weight forces of the sliding doors 3 and 4 can then also be absorbed by the support rollers. List of reference signs

[0035] 1Furniture 2Furniture body 3Sliding door 4Sliding door 5Running track 6Running section 7Running section 8Top panel 9Floor 10Guide rail 10a, 10bRail section 11Guide 12Guide 13Guide section 14Guide section 15Guide roller 16Guide roller 17Bar 18Bar 19End section 20Butt connector 21Pin 22Spacer 23Bracket 24Support roller 25Bracket 26Support roller 27Bar 30Mounting element 31Holding element 32Connecting section 33Holding part 34Bracket 35Top 36Guide track 37Pin 38Holding section 39Opening 40Mounting element 41Holding part 42Bracket 43Axis 45Attachment 46Guide track 47Pin

Claims

1. Sliding door fitting for furniture (1) having a guide rail (10) formed from at least two rail parts (10a, 10b), which can be fixed to a furniture body (2) and along which at least one guide part (13, 14) of the sliding door fitting is guided, which can be fixed to a sliding door (3, 4) in order to keep it movable and guided on the furniture body (2), wherein the at least two rail parts (10a, 10b) are connected to one another in the butt area by means of a butt connector (20), characterized in that in a butt area between the at least two rail parts (10a, 10b), at least one support roller (24, 26) is fixed to the furniture body (2) and is rotatably mounted, by means of which the at least one guide part (13, 14) can be supported when passing over the butt area of the guide rail (10), wherein the at least one support roller (24, 26) is rotatably mounted on the butt connector (20).

2. Sliding door fitting according to claim 1, characterized in that a guide track (36, 46) is formed on the at least one guide part (13, 14), on which the support roller (24, 26) can roll.

3. Sliding door fitting according to claim 2, characterized in that the guide track (36, 46) has a curved section for raising and lowering the at least one guide part (13, 14).

4. Sliding door fitting according to one of claims 1 to 3, characterized in that the at least two rail parts (10a, 10b) are arranged at a distance from each other via the butt connector (20).

5. Sliding door fitting according to one of claims 1 to 4, characterized in that two support rollers (24, 26) are rotatably mounted on the butt connector (20) and one of at least two guide parts (13, 14) can be supported via each support roller (24, 26).

6. Sliding door fitting according to claim 5, characterized in that the two support rollers (24, 26) are arranged one above the other in the vertical direction.

7. Sliding door fitting according to one of the preceding claims, characterized in that at least one guide roller (15, 16) is provided on the at least one guide part (13, 14), which can roll along a track on the guide rail (10).

8. Sliding door fitting according to one of the preceding claims, characterized in that two guides (11, 12) spaced apart from one another are formed on the guide rail (10) for in each case at least one guide part (13, 14).

9. Sliding door fitting according to one of the preceding claims, characterized in that each guide part (13, 14) is held movable in the vertical direction on a mounting element (30, 40) fixed to the sliding door (3, 4).

10. Furniture (1) having a furniture body (2) and at least one sliding door (3, 4) which is held movably on the furniture body (2) by means of a sliding door fitting according to one of the preceding claims.

11. Furniture according to claim 12, characterized in that each sliding door (3, 4) is suspended by at least one running part (6, 7) on a running rail (5) on an upper panel (8) and the guide rail (10) is fixed to a base (9) of the furniture body (2).

Images