Mechanism for the mounting of sliding doors

Abstract: Mechanism for the mounting of sliding and folding doors, particularly doors consisting of at least two leaves (1 and 2, 1a and 2a), suspended by means of upper rail rolling elements (3, 3a) and which run on lower guides (33). The upper rails (3, 3a) consist of a shaped section that forms two rolling tracks (4 and 5) for sliding doors and a single rolling track for folding doors, along which move groups of carriages belonging to different door leaves. The carriages (6) making up the rolling elements have a vertical hole (8, 8a) for taking a suspension rod (9, 9a) for the leaves. The bottom of the leaves has runners (31) that slide along an inverted guide (33), fitted below the level of the gap closed by the door.

Description: This invention concerns a mechanism for the mounting of sliding doors. The doors consist of two leaves which are suspended from upper rails by means of runner elements, and are supported on lower guides. The runner elements include a carriage consisting of a housing in which are mounted parallel axis wheels and a vertical intermediate suspension rod for the door leaves. For the German publication nr. 2555289 known as device for the suspension of sliding doors which are suspended by means of suspension bolts provided on the upper door edge in a chassis for push carts running on profiled rails, in the case of which the suspension bolt protrudes into an opening in the lateral surface of the sliding door, where it can be coupled with the sliding door, in which an annular armature piece can be inserted in the opening and that the suspension bolt, protruding into the inner space of the armature, is equipped with a mobile safety device which can be coupled with a safety piece fixed in the armature piece. In this case the door fittings presents a hexagonal piece which is inserted in a circular recess on the door. This solution is not very safe when the doors are made of wood sheavings. For the Austrian patent nr. 366902 known as rail fittings for sliding doors for pieces of furniture with running rails fixed in the door or doors as well as in the furniture body, for example mounting rails fitted onto the upper furniture bottom, in which case the load of the door is transmitted from the running rails over swivelling rollers or similar onto the mounting rails and for which preferably some guiding elements are provided on the opposite edge of the door, in which the running rail or running rails are fixed to the door by means of separate two piece carrying devices, consisting of a rail part and a door part which, for example, can be coupled by means of an attachment screw and can be adjusted by a binding screw. The above patent reveals the disposition of the inverted inferior doble guide on which the runner of the sliding doors slide, of which the one corresponding to the external door is mounted by a fixed piece in U-shape. This solution reveals the inconvenience to precise pieces in different U-forms for each type of door. The objective of the invention is a mechanism for fitting of sliding doors, and in particular doors comprising at least two sliding leaves which are suspended from upper rails fitted with stops to limit the travel of the leaves and guided by bottom rails that cooperate with slides fitted on the door leaves, the mechanism further comprising runner elements including a carriage composed of a chassis fitted with parallel-axled wheels and an intermediate vertical shaft, characterized by the fact that each door leaf is suspended from each shaft by means of a plate roughly rectangular in shape, an upper part of which is bent at right angles and has an opening leading through the said plate to an aperture, into which the head of the suspension shaft slides, this upper part fitting into a cut out in the upper edge of the door leaves, and the plate being attached to the door by screws that cooperate with bores and centring lugs; and that the slide belonging to the leaf farthest from the door frame, is attached to this leaf by a U-shaped piece composed of two brackets joined adjustably by superimposition of their two angles. In the diagrams: Figure 1 is a vertical cross-section of a running door, designed along the lines of the invention. Figure 2 is a longitudinal cross-section taken along the line of intersection II-II in figure 1. Figure 3 is a cross-section according to the line of intersection III-III in figure 2. Figure 4 is a cross-section of the carriage housing, taken along the line of intersection IV-IV in figure 2, showing a different way of carrying this out. Figure 5 is a plan view of the stop that appears mounted on the rail in figure 2. Figure 6 is a section along the line of intersection VI-VI in figure 5. Figures 7 to 10 show front and plan views of the brackets making up the U-piece that is secured to the lower part of the outside leaves of the door. In figure 1, the numbers 1 and 2 refer to the two leaves of a sliding door. These leaves are suspended from an upper shaped section 3 that forms two rails numbered 4 and 5. Running along the inside of these two rails are carriages 6 making up the rolling elements for sliding the doors 1 and 2. The carriages 6, figure 2, include a housing in which are mounted two parallel axis wheels 7. Between these two wheels is a central vertical hole 8 in which is inserted, from below, an intermediate rod 9 from which the leaves 1 and 2 are suspended by means of an intermediate plate 10. The vertical hole 8 of the carriage 6, and the central rod 9, can be secured together by means of screwing. Alternatively, the hole and the rod need not be threaded, in which case they both contain a transverse hole 8a, figures 4 and 12, so that a blocking pin can be inserted. If the rod 9 is threaded, it can have an unthreaded polygonal-shape intermediate section 11 so that it can be gripped with a spanner. As can be seen in figures 2 and 3, plate 10 has a roughly rectangular shape with a central section 12 bent into a right angle from one of its longitudinal edges. On each side of this central section is a tab 13. Along the bending line of the section 12 is a notch 14 for the passage and proper positioning of the central rod 9, this notch aligning with the plate 10 via a window 15 sized to allow the head of the rod 9 to pass through. Moreover, the plate 10 has holes 17 to allow securing screws for leaves 1 and 2 to pass through and, as can be seen in figures 1 and 2, is also carries pivots 17a for it to be centred. As shown in figure 1, the central section of the plate 10 is housed in a recess 12a made in the leaves 1 and 2 of the door along their upper edge. This system of mounting allows the height of the leaves 1 and 2 to be adjusted so that their upper edge is set as close to the upper rail 3 as is wished. As can be seen better in figure 1, the shaped piece 3 has a roughly rectangular outline, with an intermediate transverse partition 18 that defines two longitudinal gaps, each of which has a longitudinal slot for the passage of the central rod 9. The upper opposite side has a longitudinal recess 19 containing drilled holes for securing screws 20 to pass. Rails 4 and 5 are fitted with internal stops 21, figure 2, that limit the passage of the carriages 6. As can be seen better in figures 5 and 6, the stops 21 consist of a body 22 with a projecting arm 23. The stops are secured by means of a bridge 24, screws 25 traversing the body 22, and nuts 26 that are housed in that body. The ends of the side arms 27 of the bridges 24 are toothed 28. As can be seen in figure 2, the stops 21 are mounted in such a way that the arm 23 points towards the carriage 6. When the door is in the closed position, the carriage 6 will knock against the body 22, while the adjacent wheel 7 couples with the arm 23, which acts as a retaining element to prevent the door from accidentally opening. When the screws 25, resting on the bottom of the rail, are pressed they exert a downward pressure on the bridge 24, which will rest with its teeth on the track of the rails. Of the two leaves making up the running door shown in figure 1, leaf number 1 occupies the outside position. Secured to the inner surface of the bottom of this leaf is a U-piece consisting of two brackets 29 and 30. The first bracket is secured to leaf 1 and the second carries the runners 31 which, along with the runners 32 secured directly to the inner door 2, slide along the inverted guide 33. Bracket 29 is shown in figures 7 and 8, and bracket 30 in figures 9 and 10. The vertical arm of bracket 29 is provided with holes 34 for the passage of the leaf 1 securing elements and the centring pivots 34a, while the other arm has a longitudinal slot. The vertical arm of bracket 30 has two holes 36 for securing a base 37 to which is mounted the runner 31. Its horizontal arm has a threaded hole 38 which fits over the slot 35 of bracket 29 to take a union screw 39, figure 1. This allows the slot 35 to vary the separation between the brackets in order to adjust the distance to the guide 33. Figure 1 shows a transverse cross-section of the guide 33, which consists of an inverted C-shape with side arms of different lengths. The shorter arm, number 40, is the one that is closer to the door leaves 1 and 2. The outside of the central arm of this guide 33 forms a longitudinal groove 41 with a central slot along its whole length. The head of pivots 42 slide along this groove, these pivots being fixed underneath in an inverted position in the bottom 43 of the enclosure or gap that is closed by the doors.

Claims: Mechanism for fitting of sliding doors, and in particular doors comprising at least two sliding leaves (1, 2) which are suspended from upper rails (3, 4) fitted with stops (21) to limit the travel of the leaves (1, 2) and guided by bottom rails (33) that cooperate with slides (31, 32) fitted on the door leaves (1, 2), the mechanism further comprising runner elements including a carriage (6) composed of a chassis fitted with parallel-axled wheels and an intermediate vertical shaft (9), characterized by the fact that each door leaf (1, 2) is suspended from each shaft (9) by means of a plate (10) roughly rectangular in shape, an upper part of which (12) is bent at right angles and has an opening (14) leading through the said plate to an aperture (15), into which the head of the suspension shaft (9) slides, this upper part fitting into a cut out (12a) in the upper edge of the door leaves, and the plate being attached to the door by screws that cooperate with bores (17) and centring lugs (17a); and that the slide (31) belonging to the leaf (1) farthest from the door frame, is attached to this leaf by a U-shaped piece composed of two brackets (29, 30) joined adjustably by superimposition of their two angles.

Inventors: TARREGA I LLORET MIQUEL ANGEL, TARREGA I LLORET, MIQUEL ANGEL
Applicants: KLEIN IBERICA, KLEIN IBERICA, S.A.
Application year: 1991
Main classification: E05D15
IPC codes: E05F5, E05D15