EP4284993A1

EP4284993A1 - Track fitting assembly for sliding doors, and track system

Info

Publication number: EP4284993A1
Application number: EP22708731.9A
Authority: EP
Inventors: Martin Zimmer; Günther Zimmer
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-29
Filing date: 2022-01-18
Publication date: 2023-12-06
Also published as: WO2022161568A1; DE202021000337U1; US20240301735A1

Abstract

The invention relates to: - a track fitting assembly comprising at least two mutually parallel tracks for a sliding door system, comprising at least one Z-shaped carrier part which has a fastening leg, a vertical leg and a support leg, said track fitting assembly also comprising at least one insert part, at least some regions of which can be encompassed by the carrier part, wherein both the carrier part and the insert part each have a constant cross-section along their entire length in the longitudinal direction; - a track system comprising at least one such track fitting assembly and at least one additional carrier part and/or at least one additional insert part; and - a piece of furniture comprising such a track system.

Description

Track hardware group for sliding doors and track system

Description :

The invention relates to a track fitting group with at least two parallel tracks for a sliding door system, with at least one Z-shaped carrier part, which has a fastening leg, a vertical leg and a support leg, and with at least one of the carrier part, at least in certain areas grippable slide-in part, with both the carrier part and the slide-in part each having a constant cross-section along its entire length oriented in the longitudinal direction, a track system with at least one such track fitting group and with at least one further carrier part and/or at least one further slide-in part and a piece of furniture with such a track system. DE 202020 101 165 U1 discloses a running rail system made from rolled sheet metal.

The present invention is based on the problem of developing a guide fitting for sliding doors that is stable even under changing operating loads.

This problem is solved with the features of the main claim. For this purpose, the wall thickness of the vertical leg is thinner in the area adjoining the fastening leg than in the area adjoining the supporting leg.

The raceway system is designed in such a way that the end faces of two support parts make contact at a common joint and/or that the front faces of two slide-in parts abut one another at a common contact point. Each joint is longitudinally offset from a front surface and each contact point is longitudinally offset from a front surface.

The carrier part of the running track fittings group is designed to be inherently rigid due to its geometric design. This eliminates the need for a vertical contact surface on the piece of furniture. The multi-part structure of the track hardware group also prevents deformation of the track hardware group under both static and dynamic operating loads.

If the running track fittings group is expanded to form a running track system, the longitudinally offset support parts and slide-in parts add further reinforcement to the running track hardware group. The static and dynamic strength of the running track hardware group is therefore independent of its overall length. The high level of rigidity also enables the multi-part system to be operated with little noise.

Further details of the invention result from the dependent claims and the following description of embodiments shown schematically.

Figure 1: piece of furniture with sliding door system;

FIG. 2: Track fittings group of the piece of furniture according to FIG. 1;

FIG. 3: Front view of the track fittings group from FIG. 1;

FIG. 4: carrier part of the running track fitting group according to FIG. 2;

FIG. 5: insertion part of the running track fitting group according to FIG. 2;

FIG. 6: Variant of a piece of furniture with a sliding door system;

FIG. 7: Track fitting group of the piece of furniture according to FIG. 6;

FIG. 8: Front view of the track fittings group from FIG. 6;

FIG. 9: carrier part of the running track fitting group according to FIG. 6;

Figure 10: Slide-in part of the running track fittings group according to Figure 6. Figures 1 - 6 show a piece of furniture (1) with a sliding door system and individual parts thereof. The piece of furniture (1), for example a cupboard, has two sliding doors (3, 4) that can be moved parallel to one another in a longitudinal direction (5). These sliding doors (3, 4) can, for example, be driven individually by a motor or moved manually. It is also conceivable to arrange more than two sliding doors (3, 4) on the body of the piece of furniture (1).

When moving, the sliding doors (3, 4) are guided along a track fitting group (10) arranged, for example, on the ceiling (2) of the piece of furniture (1). For this purpose, the raceway fitting group (10) shown has, for example, two parallel raceways (71, 72) next to one another. In this exemplary embodiment, the two tracks (71, 72) have the same tangential plane, which is normal to a vertical, and the same length. However, it is also conceivable to arrange the two tracks (71, 72) at different heights, for example. The two tracks (71, 72) can also have different lengths oriented in the longitudinal direction (5). The length of the individual track (71; 72) is longer than the sliding door (3; 4) guided along this track (71; 72). For example, each of the sliding doors (3; 4) has two sets of guide rollers (6, 7) for guidance along the respective track (71; 72). These guide roller groups (6, 7) are attached to the respective sliding door (3; 4) in the upper area.

The running track fitting group (10) has at least one carrier part (21; 22, 23) and at least one insertion part (41; 42) at least partially encompassed by the carrier part (21; 22; 23). The individual carrier parts (21; 22; 23) and/or the individual slide-in parts (41; 42) can have different individual lengths. The overall length of the track and hardware group (10) corresponds at least to the sum of the individual lengths of the carrier parts (21; 22; 23) and at least the sum of the individual lengths of the slide-in parts (41, 42). However, the overall length of the track-fitting group (10) can also be 25% longer than the smaller of these sums.

In the figure 2, the track fittings group (10) is shown in the design of a track system (11). The track system (11) has at least two carrier parts (21, 22; 22, 23; 21, 23) and/or at least two slide-in parts (41, 42). In this exemplary embodiment, the track system (11) has three carrier parts (21, 22, 23) and two plug-in parts (41, 42) connected to them. In this exemplary embodiment, the sum of the lengths of all carrier parts (21, 22, 23) corresponds to the sum of the lengths of all slide-in parts (41, 42). However, the overall length of the raceway system (11) can also lie within the above tolerance range. In the exemplary embodiment, the length of a carrier part (21; 22; 23) is two thirds of the length of an insertion part (41; 42). The total length of the track system (11) is two meters, for example.

FIG. 3 shows an end view of a track fittings group (10). The carrier part (21; 22; 23) is Z-shaped. It has a fastening leg (24) with which it is fastened, for example, to the ceiling (2) of the piece of furniture (1). A vertical leg (27) adjoins the fastening leg (24). This vertical leg (27) lies in front of the front of the furniture body when the running track fitting group (10) is mounted. A supporting leg (32) adjoins the lower end of the vertical leg (27). This protrudes in the transverse direction (8) in the direction away from the furniture body from the vertical leg (27). The slide-in part (41; 42) sits in the carrier part (21; 22; 23). The insertion part (41; 42) is accommodated in a form-fitting manner in the carrier part (21; 22; 23) except for an axial degree of freedom oriented in the longitudinal direction (5). In this exemplary embodiment, both raceways (71, 72) are formed in the slide-in part (41; 42). The two tracks (71; 72) are, for example, designed identically to one another.

FIG. 4 shows a single carrier part (21; 22; 23). The carrier part (21; 22; 23) has a constant cross-sectional profile and a constant cross-sectional area over its length. In this case, the cross-sectional plane is oriented normal to the longitudinal direction (5). The carrier part (21; 22; 23) can be made of metal, e.g. aluminum, plastic, a composite material, etc. For example, it is produced by means of a primary shaping process, e.g. an extrusion or pultrusion process, an extrusion process, etc. The individual carrier part (21; 22; 23) is delimited in the longitudinal direction (5) by means of two end faces (35). The two, e.g. flat, end faces (35) of a carrier part (21; 22; 23) can be aligned parallel to one another. However, you can also enclose an angle of up to 5 degrees, the apex of this angle being above the supporting leg (32).

The fastening leg (24) has an at least approximately cuboid shape. Its width, oriented in the transverse direction (8), is, for example, 1% of the length of the track fitting group (10). Its thickness is, for example, 0.1% of the length mentioned. The fastening leg (24) has, for example, three fastening bores (25). These fastening bores (25) are through bores with a cylindrical, truncated cone-shaped and/or countersunk cross-section. To fasten the running track fitting group (10) to the furniture body, cylinder screws, hexagon head screws, countersunk screws, etc. inserted into the mounting holes (25). However, the track fitting group (10) can also be fixed to the furniture body by means of adhesive bonding, by means of form-fitting gripping, clamps, clamps, setting in, spring-loaded spreading, etc.

The vertical leg (27) has a wedge-shaped cross section. Its thickness, that is the wall thickness of the vertical leg (27), increases from the fastening leg (24) to the supporting leg (32). In the exemplary embodiment, the thickness of the vertical leg (27) in the area adjoining the fastening leg (24) corresponds to the thickness of the fastening leg (24). In the area adjoining the support leg (32), the thickness of the vertical leg (27) is, for example, 1.75 times the thickness of the area adjoining the fastening leg (24). The increase in thickness from the fastening leg (24) to the supporting leg (32) is continuous and designed with a constant gradient in the exemplary embodiment. However, it is also conceivable for the increase to be progressive, degressive or with discontinuities. With such an embodiment of the vertical leg (27), the individual value of the thickness along a coordinate axis of an imaginary coordinate system oriented in the height direction (9) is, for example, greater than or equal to the thickness in the case of a linear increase. The transitions from the vertical leg (27) to the fastening leg (24) and to the supporting leg (32) are rounded. In the exemplary embodiment, the height of the vertical leg is approximately 3% of the length of the track fitting group (10).

The rear side (28) of the vertical leg (27) facing the furniture body lies in a plane normal to the plane of a bearing surface (26) of the fastening leg (24). The guide side (29) facing away from the furniture body has an encompassing strip (31). This is oriented in the direction of the supporting leg (32). entent. The thickness of the angled gripping strip (31) is, for example, three quarters of the thickness of the fastening leg (32). The distance between the encircling strip (31) and the plane of the bearing surface (26) is, for example, 0.4% of the length of the track fitting group (10).

The support leg (32) is oriented in the transverse direction (8). Its width, oriented in the transverse direction (8), corresponds, for example, to the width of the fastening leg (24). At the transition to the vertical leg (27), the thickness of the supporting leg (32) is, for example, the thickness of the vertical leg (27). The thickness of the supporting leg (32) at its free end corresponds, for example, to the thickness of the fastening leg (24). At its free end, the supporting leg has an engagement bar (33). This protrudes upwards out of the supporting leg (32). The supporting leg (32) has a T-rail (34) between the vertical leg (27) and the gripping strip (33). This also protrudes upwards out of the supporting leg (32). The T-rail (34) is designed, for example, symmetrically to a vertical central longitudinal plane.

An insertion part (41; 42) is shown in FIG. The insertion part (41; 42) can consist of the same material as the carrier part (21; 22; 23). However, it can also be made from one of the other materials mentioned in connection with the carrier part (21; 22; 23). The slide-in part (41; 42) is produced using one of the manufacturing processes mentioned in connection with the carrier part (21; 22; 23). The insertion part (41; 42) also has the same cross section and a constant cross section profile over its entire length. The individual slide-in part (41; 42) is delimited in the longitudinal direction (5) by two front surfaces (44). These front surfaces (44) can be designed in such a way and so to each other be arranged like the end faces (35) of the individual carrier part (21; 22; 23).

In this exemplary embodiment, the insertion part (41; 42) has an L-shaped cross section. It has a holding leg (43) and a track leg (51). The holding leg (43) and the web leg (51) are oriented at least approximately at right angles to one another. The holding leg (43) is plate-shaped. In the illustration in FIG. 3, it lies parallel to the guide side (29) of the carrier part (21; 22; 23). In this representation, it reaches under the gripping strip (31) of the vertical leg (27) and stands on the supporting leg (32). In the exemplary embodiment, the thickness of the holding leg (43) is 80% of the thickness of the fastening leg (24) of the carrier part (21; 22; 23).

In this exemplary embodiment, the track leg (51) has both an inner track (71) and an outer track (72). If the track fitting group (10) is designed with more than two tracks (71, 72), the insertion part (41; 42) can have additional tracks (71; 72). The slide-in part (41; 42) has at least the outermost track (72). The width of the web leg (51) in the transverse direction (8) is, for example, 90% of the width of the supporting leg (32).

The distance between the two tracks (71, 72) is, for example, half the width of the leg (51) of the track. In the exemplary embodiment, the individual running track (71; 72) has a V-shaped, channel-shaped cross section. The opening angle is 120 degrees, for example. The bottom (73) of the individual track (71; 72) is arched. However, it is also conceivable for the tracks (71; 72) to be raised relative to the track leg (51). Also a different design of the individual tracks (71; 72) is conceivable. The tracks (71; 72) are delimited laterally by means of delimiting webs (74). The height of the individual delimiting web (74) is, for example, 90% of the thickness of the fastening leg (24).

On its underside (52), the web leg (51) has an engagement groove (53) in the outer region for receiving the engagement strip (33). The engagement groove (53) is delimited by means of an overlapping web (54) protruding downwards, which engages around the supporting leg (32) after assembly. This wraparound can be subject to play. For example, approximately centrally on its underside (52), the web leg (51) has a T-groove (55) oriented in the longitudinal direction (5) for receiving the T-rail (34). This positive connection centers and secures the position of the insertion part (41; 42) relative to the carrier part (21; 22; 23) at least in the transverse direction (8) and in the vertical direction (9). Any moments that may occur are also supported in all directions by means of this moment-resistant connection. The underside (51) of the web leg (51) is thus designed to complement the upper side of the support leg (32).

When assembling the track fittings group (10), an insertion part (41; 42) is pushed into a carrier part (21; 22; 23). This is done in the longitudinal direction (5). The joining process here is folding by sliding them into one another. Here, the carrier part (21; 22; 23) and the insertion part (41; 42) engage in one another in such a way that all degrees of freedom except for the axial degree of freedom for assembly are positively blocked. If necessary, the carrier part (21; 22; 23) and the insertion part (41; 42) can be fixed relative to one another in the axial direction after assembly. A track fitting group (10) which is longer than the length of a carrier part (21; 22; 23) and/or an insertion part (41; 42) can be designed as a track system (11). At least one slide-in part (41; 42) has a different length than a carrier part (21; 22; 23). In the exemplary embodiment, the two components have the above-mentioned length ratios to one another. In this case, the individual insertion part (41; 42) is longer than the individual carrier part (21; 22; 23).

When assembling this running track system (11), first an insertion part (21; 22; 23) and a carrier part (41; 42) are joined together, e.g. in such a way that a first front surface (44) of a first insertion part (41; 42) is flush with a first End face (35) of a first carrier part (21; 22; 23). A further carrier part (22; 23; 21) is then connected to the slide-in part (41; 42). After joining a further slide-in part (42; 41) and a third carrier part (23; 21;

22), the track fittings group (10) shown in FIGS. 1 and 2 is assembled in the form of a track system (11). In this track system (11), two carrier parts (21, 22; 22, 23) make contact at a common joint (36). The two carrier parts (21, 22; 22,

23) rest against each other with their end faces (35). Depending on the configuration of the end faces (35), this contact can be a point contact, a line contact or a surface contact. Furthermore, two slide-in parts (41, 42) rest against one another with their front surfaces (44). The system of these two front surfaces (44) forms a contact point (45) of the insert parts (41, 42). The contact point (45) can also be in the form of a point, line or area. After assembly, these contact points (45) of the insertion parts (41, 42) are offset in the longitudinal direction (5) in relation to the joints (36) of the carrier parts (21, 22; 22, 23). This offset in the longitudinal direction (5) is half the length in the exemplary embodiment a carrier part (21; 22; 23). The magnitude of the axial offset is, for example, between 10% and 90% of the length of the shortest of the carrier parts (21; 22; 23) and insert parts (41; 42). With such an arrangement, each joint (36) of the carrier parts (21, 22; 22, 23) is offset in the longitudinal direction (5) to each front face (44) of one of the slide-in parts (41; 42). At the same time, each contact point (45) of two insertion parts (41, 42) is offset in the longitudinal direction (5) with respect to each end face (35) of a carrier part (21; 22; 23).

After assembling the track fitting group (10), it can be mounted on the piece of furniture (1). In this case, the fastening leg (24) is placed, for example, on the cover (2) of the piece of furniture (1) and fastened, as described above. After this assembly, the vertical leg (27) hangs down, covering the upper area of the furniture body, for example. Due to the inherent rigidity of the track fittings group (10), it is not necessary to place the vertical leg (27) on the front side of the ceiling (2). The front side of the ceiling (2) can therefore be unprocessed.

The sliding doors (3, 4) are hooked into the track fitting group (10) in such a way that the guide roller groups (6, 7) of a sliding door (3; 4) with their track rollers move together in a track (71; 72) sitting. For example, the individual sliding door (3; 4) can be supported on the furniture body in the lower area. A sliding or roller guide for the lower area of the sliding door (3; 4) on the furniture body is also conceivable. In the case of a sliding guide, this can be designed on one side, for example as an abutment guide on the bottom part of the furniture body. Such an abutment guide can be arranged, for example, as a strip oriented in the longitudinal direction (5) and extending vertically on the base part. After the sliding doors (3; 4) have been hung in, the weight of the sliding doors (3; 4) loads the track fittings group (10). The design of the cross section of the track fittings group (10) prevents bending of the track fittings group (10) both in a plane normal to the longitudinal direction (5) and in a vertical plane containing the longitudinal direction (5).

To open and close the piece of furniture (1), the sliding doors (3; 4) are moved relative to the body of the furniture. The rollers of the individual sliding doors (3; 4) are rolled and/or rolled over the contact points (45). A maximum of one roller rolls over a contact point (45) at a time. Due to the firm connection between the carrier parts (21, 22, 23) and the slide-in parts (41, 42), the contact points (45) are gap-free even under load. There is only little running noise. The gripping of the insertion part (41; 42) around the carrier part (21; 22; 23) by means of the overlapping web (54) also prevents the fitter or the operator from being injured.

Figures 6 - 10 show a variant of the running track fittings group (10) in the form of a running track system (11). Like the first exemplary embodiment, the running track system (11) shown has three support parts (21, 22, 23) and two slide-in parts (41, 42). This track system (11) can also have a different number of carrier parts (21, 22, 23) and/or slide-in parts (41, 42). The track system (11) can thus be adapted to different installation lengths.

The individual support part (21; 22; 23), cf. Figures 7-9, is also Z-shaped in this exemplary embodiment. It can be made of the same materials as the carrier part (21; 22; 23) shown in FIGS. 1-4. Also can these carrier parts (21, 22, 23) can be produced using the same primary shaping process.

The fastening leg (24) corresponds in its geometric dimensions and in its structure to the fastening leg (24) of the first exemplary embodiment. The fastening leg (24) merges into the vertical leg (27) in an arc of constant thickness. The height of the vertical leg (27) is also e.g. 8% of the length of the individual carrier part (21; 22; 23) in this embodiment. The thickness of the vertical leg (27) at the transition to the fastening leg (24) corresponds, for example, to the thickness of the fastening leg (24). From here, the wall thickness of the vertical leg (27) increases in the exemplary embodiment, e.g. to double in the area of the transition to the supporting leg (32). The increase in thickness is linear, for example. In this exemplary embodiment, the vertical leg (27) is designed without an encompassing strip (31).

The transition from the vertical leg (27) to the support leg (32) is designed with a large radius. In the exemplary embodiment, a longitudinal opening (38) is formed in the transition area (37).

The supporting leg (32) has, for example, the same width as the fastening leg (24). He has an inside track (71). This raceway (71) is designed, for example, like the inner raceway (71) of the first exemplary embodiment of the raceway fitting group (10). If the track fitting group (10) is designed with more than two tracks (71, 72), a further track (72; 71) adjacent to the inner track (71) can also be part of the carrier part ( 21; 22; 23). Next to the outermost track (71) of the carrier part (21; 22; 23) is a wrap-around hook strip (39) educated. This encompasses an engagement space (61). The supporting leg (32) tapers towards its outer end.

In this exemplary embodiment, the insertion part (41; 42), see FIGS. 8 and 10, has only the web leg (51). On its inner side facing the vertical leg (27), the insertion part (41; 42) has a gripping strip (56). In the assembled state, this engages in the engagement space (61) behind the wrap-around hook strip (39) and thus secures the position of the insertion part (41; 42) relative to the carrier part (21; 22; 23). The slide-in part (41; 42) has a track (72) on its upper side. In the representations of Figures 7 and 8, this is an outer track (72). This track (72) is designed, for example, like the inner track (71) of the track fittings group (10). It is also conceivable to design the slide-in part (41; 42) with further raceways (71, 72) adjacent to and parallel to the outer raceway (72).

At its outer end, the slide-in part (41; 42) has an overlapping web (54) projecting downwards. When the running track fitting group (10) is assembled, this grips around the support leg (32) of the support part (21; 22; 23). It also closes the track fittings group (10) from the outside.

The assembly of the track fittings group (10) and the track system (11) takes place as described above. The assembly and operation of the running track fitting group (10) of this exemplary embodiment also corresponds to the first exemplary embodiment.

Combinations of the individual exemplary embodiments are also conceivable. List of references:

1 piece of furniture

2 blanket

3 sliding door

4 sliding door

5 longitudinal

6 guide roller group

7 guide roller group

8 transverse direction

9 height direction

10 track hardware group

11 career system

21 carrier part

22 carrier part

23 carrier part

24 mounting legs

25 mounting holes

26 contact surface of (24)

27 vertical legs

28 back of (27)

29 guide page

31 wrap-around strip

32 carrying legs

33 intervention bar

34 T rail

35 face

36 bump

37 transition area

38 longitudinal breakthrough

39 wrap-around hook bar 41 slide-in part

42 slide-in part

43 retaining legs

44 front face

45 contact point

51 track legs

52 bottom of (51)

53 engagement groove

54 overlap web

55 T slot

56 grip bar

61 intervention room

71 career, inner career

72 track, outer track

73 bottom of (71, 72)

74 delimitation bars

Claims

Patent claims :

1. Track fitting group (10) with at least two mutually parallel tracks (71, 72) for a sliding door system, with at least one Z-shaped carrier part (21; 22; 23) which has a fastening leg (24), a vertical leg ( 27) and a supporting leg (32) and having at least one insertion part (41; 42) which can be gripped at least in regions by the supporting part (21; 22; 23), wherein both the supporting part (21;

22; 23) and the insertion part (41; 42) each have a constant cross-section along their entire length oriented in the longitudinal direction (5), characterized in that

- that the wall thickness of the vertical leg (27) is thinner in the area adjoining the fastening leg (24) than in the area adjoining the supporting leg (32).

2. Running track fittings group (10) according to claim 1, characterized in that the wall thickness of the vertical leg (27) from the fastening leg (24) to the supporting leg (32) increases steadily.

3. Running track fitting group (10) according to Claim 1, characterized in that the maximum wall thickness of the carrier part (21; 22; 23) is greater than one and a half times the minimum wall thickness of the carrier part (21; 22; 23 ).

4. Running track fitting group (10) according to claim 1, characterized in that the total length of the running track fitting group (10) is at least the sum of the individual lengths and at most 1.25 times the sum of the individual lengths of all carrier parts (21; 22; 23) as well as at least the sum of the individual lengths and at most 1.25 times the sum of the individual lengths of all slide-in parts (41; 42).

5. Running track fitting group (10) according to claim 1, characterized in that the carrier part (21; 22; 23) has at least one T-rail (34) or at least one wrap-around hook strip (39) for securing the position of the insertion part ( 41; 42) relative to the carrier part (21; 22; 23).

6. Running track fitting group (10) according to claim 1, characterized in that the carrier part (21; 22; 23) has a maximum of all running tracks (71) except for an outer running track (72).

7. Running track fitting group (10) according to claim 1, characterized in that the insertion part (41; 42) has at least one running track (71; 72).

8. Track fitting group (10) according to claim 7, characterized in that at least one track (72) of the insertion part (41; 42) is an outer track (72) of the track fitting group (10).

9. track fitting group (10) according to claim 1, characterized in that the insert part (41; 42) at least one T-groove (55) or at least one gripping strip (56) for gripping behind the carrier part (21; 22; 23) in some areas.

10. Runway fittings group (10) according to claim 1, characterized in that the carrier part (21; 22; 23) and the insertion part (41, 42) interlock positively and block at least five degrees of freedom.

11. Running track system (11) with at least one running track fitting group (10) according to claim 1 and with at least one further carrier part (21; 22; 23) and/or at least one further insertion part (41; 42), characterized in that

- That the end faces (35) of two carrier parts (21, 22;

22, 23) make contact at a common joint (36) and/or that the front surfaces (44) of two slide-in parts (41, 42) abut one another at a common contact point (45),

- that each joint (36) is offset in the longitudinal direction (5) to a front surface (44) and

- That each contact point (45) is offset in the longitudinal direction (5) to an end face (35).

12. Track system (11) according to claim 11, characterized in that the sum of the lengths of all carrier parts (21, 22, 23) corresponds to the sum of the lengths of all slide-in parts (41, 42).

13. Running track system (11) according to claim 11, characterized in that at least one carrier part (21; 22; 23) and at least one insertion part (41; 42) have different lengths.

14. Piece of furniture (1) with a track system (11) according to claim 11.