FI94661C - Slide rail extension - Google Patents

Description

94661

This invention has been distributed from Finnish application 891724, 5 filed on April 11, 1989.

The invention relates to a sliding rail extension provided with a sliding groove. Sliding rails are used, for example, for fixing and moving balcony glass, movable wall elements and the like. Sliding pieces, usually sliding wheels, are fixed to the upper or lower edge of the balcony glass or the like, which slide in the sliding groove of the upper rail fixed to the ceiling or in the sliding groove of the lower rail fixed to the balcony railing or floor, respectively.

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Sliding groove rails are usually delivered along the entire length of the wall, as unevenness easily occurs at the joints, making it difficult to make the sliding surfaces form a flat sliding surface. Due to thermal expansion and installation, the rails already generate enough torsion that the sliding surfaces of both rails do not remain in the same plane. This makes it more difficult for the sliding wheels to pass over the seams. Delivering a full-length, balcony or room-long rail to a construction site is difficult because it does not fit through the stairwells into the floors. The rails are therefore often lifted from the outside with a rope to the balcony. However, lifting easily causes the rail to warp, making it no longer work properly.

The miter joints of the corner points also cause similar difficulties as the extension joints described above.

The object of the present invention is to eliminate the above-mentioned problems and to provide an extension for sliding rails in which the extensions no longer cause difficulties.

The invention is characterized by what is set forth in the characterizing part of claim 1.

• · 2 94661

The extension according to the invention has a sliding groove and the connection of the extension and the slide rail takes place by means of connecting pieces or inserts which are inserted into the groove or grooves in the extension and / or the slide rail, respectively. The extension piece and the slide rail are aligned with each other and the connecting pieces are arranged in suitable spaces so that the slide groove continues from the slide rail over the extension piece in a flat groove.

According to a preferred embodiment of the invention, the spaces receiving the connectors in the extension and / or the slide rail are profile grooves. Most preferably, the profile grooves are located in the walls of the slide rails opening outwards.

According to another preferred embodiment of the invention, the connectors are integral with the extensions, wherein the extension and the slide rail are brought into opposition so that the connectors protrude into the respective spaces in the slide rail. The connecting pieces are preferably male pieces projecting from the walls of the extension, parallel to the slide rail, which fit into the profile grooves running in the walls of the slide rail. The connecting pieces are most preferably male pieces projecting from both end faces of the extension piece, two at each end.

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According to another preferred embodiment, the connecting pieces are separate pieces which are inserted into the respective sliding rail-parallel grooves of the slide rail and the extension piece. According to this embodiment, the connectors are first fitted into the respective grooves of the second piece, e.g. the extension piece, after which the pieces are aligned and: the connectors are moved in their profile grooves so that the joint between the pieces is approximately in the middle of the connectors.

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According to another preferred embodiment, the opposing end surfaces of the extension piece and the slide rail • form a right angle with respect to the longitudinal direction of the slide rail. In this case, 94661 3 is most effectively eliminated by detrimental deformations of thermal expansion for the entire structure.

According to another preferred embodiment, the extension is made of hard plastic or aluminum. The slide rail is usually aluminum. The outer dimensions of the extension can advantageously be made stronger than the outer dimensions of the slide rail, thus obtaining a sturdy connection. With regard to the dimensions, it is essential that the slide groove continues from the slide rail to the extension piece so that the sliding wheels 10 can move in them without hindrance.

According to another preferred embodiment, the extension piece is a straight, or branch-type, e.g. T-shaped branch piece, or a branch piece bent at an angle, such as 90 °, 45 ° sn or 135 ° tn. The rectangular extension piece is a suitable corner piece required for balcony glazing. The branch-type extensions preferably have a protrusion at the branch point which facilitates the transfer of the roller to the branch rail.

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The extension according to the invention thus makes it possible to extend the slide rails and to form their corner or branch point without connection difficulties.

25 Another advantage of the extension piece is that when selecting rails for a particular balcony or other space, it is not necessary to observe millimeter or centimeter accuracy, but cutting to the final dimension can take place on site, where connection to the corner piece 30 or directly to the extension piece is easy and efficient. that the sliding groove continues smoothly without anti-slip points.

The fact that the slide rails can only be cut to their final size only at the workplace also makes the storage and transport of the rails substantially easier. Instead of storing and transporting long and damage-sensitive rails, • · 4 94661, they can be stored and transported in shorter and longer lengths.

The invention will now be described with reference to the preferred embodiments with reference to the accompanying drawings, in which Fig. 1 shows extensions according to the invention in a slide rail assembly, perspective view, Fig. 2 shows in an illustrative view a part of a balcony top rail assembly with a corner piece and a branch piece Fig. 3 shows a branch extension according to the invention from above, on a smaller scale, Fig. 4 shows the branch extension according to Fig. 3 from the front, Fig. 5 shows an angle extension from above, Fig. 6 shows an angle extension according to Fig. 5, Fig. 7 shows a straight extension 20 according to the invention, Fig. 8 shows 7 extension from the front.

Corresponding parts are indicated by the same reference numerals in all figures. Figure 1 shows a slide rail assembly 25 in which the second parts are shown disassembled from each other and the second parts connected to each other in a final shape.

Connected to the slide rail 1 shown in the middle of the figure are T-shaped extensions 4, from which protruding pieces 5 protrude. The unidirectional slide rails 30 to be connected to the extensions are still separate from the extensions. The end surfaces of the slide rails 1 have sliding grooves 6 and profile grooves 9; for connectors 5 in the form of heavy pieces.

The corners of the slide rail assembly have angle extensions 3.

In the lower right corner of the figure, a straight extension 35 8 is shown separate from the slide rail.

Fig. 2 shows an enlarged top view of a part of Fig. 1. It shows a slide rail 1 and sliding rails 2 of balcony glass 2 sliding on a slide rail. The wheels 2 are shown by way of example in different positions, but they do not form part of the invention. The rail assembly has an angle piece 3 according to the invention, the seam points of which with the slide rail are marked with lines 5a 3a and 3b and furthermore a branch piece 4 according to the invention, the seam points of which are marked with lines 4a and 4b. In the case of the corner piece 3 and the branch piece 4, the seam points which would come into question if the extensions according to the invention were not used are also shown in broken lines. The miter seam of the corner point 10 is denoted by the number 3c and the jii seams of the branch body by the number 4c. The seam points 3a, 3b and 4a and 4b are straight flat extensions which do not impede the movement of the wheels 2 in the sliding groove over the extensions.

The T-branch piece 4 according to Figs. 3 and 4 has integral connectors 5. These are located below the sliding groove 6 of the extension piece and fit at a corresponding height of the sliding rail into the profile grooves 9 on both sides thereof. Reference numeral 7 denotes 20 protrusions facilitates the impeller hitting the branch slide groove.

The corner piece according to Figures 5 and 6, like the branch piece 4, has one connecting pieces 5 with the corner piece 25. The corner piece 3 corresponds exactly to the T-piece, except that it has only two branches forming a right angle with each other, and not three as in the branch piece.

The extension 8 according to Figures 7 and 8 likewise has one connecting pieces with the extension ·: 5. The straight extension shown here can be used on any part of the straight slide rail. It makes it possible to connect a rail of arbitrary length with a second rail cut to a suitable length of 35.

The cross-section of the extension piece may be stronger in external dimensions than the cross-section of the slide rail. The slide rail can partially or completely go inside the extension, which gives a firm connection. All that matters is that the sliding groove is left flat with no thresholds. In this case, the thermal expansion does not cause stresses at the joint and the joint 5 does not open.

It will be apparent to those skilled in the art that various embodiments of the invention may vary within the scope of the following claims.

Claims (7)

7 94661 An extension (3; 4; 8) for connecting two or more slide rails (1), generally at an angle of 180 ° or 90 °, the extension having a sliding groove (6) in which the glass panes of the balcony glazing or the like are movably supported, characterized in that the straight connectors (5) are adapted to fit on the slide rails (1) or the spaces (9) formed on the extension piece (4) and the slide rails (1), respectively, with a cross-section corresponding to the cross-section of the connectors 10; associated with the slide rail, and that the extension is one piece. Extension piece according to Claim 1, characterized in that the connecting pieces (5) are integral with the extension piece (3; 4; 8). Extension piece according to Claim 1, characterized in that the space or spaces adapted to receive the connecting pieces (5) are profile grooves (9). Extension piece according to one of the preceding claims, characterized in that the end surfaces of the extension piece (3; 4; 8), which abut the slide rails (1), are perpendicular to the longitudinal axis of the slide groove (6). Extension piece according to one of the preceding claims, characterized in that the extension piece (3; 4; 8) is made of hard plastic, aluminum or the like. 30 Extension piece according to one of the preceding claims, characterized in that the extension piece (3; 4; 8) is of a straight or branch type, for example a T-shaped branch piece (4), or at an angle, for example 90 ° (3), 45 °: n or 35 135 ° angle, shaped extension. Extension according to Claim 6, characterized in that the sliding groove (6) of the branch body (4), at the branch point, has a protrusion (7) for guiding the sliding body (2) onto the branch in different directions. β 94661