DE29801203U1 - Holding element, in particular opening scissors, for tilt, turn-tilt or slide-tilt windows - Google Patents

Description

Rudolf Boog Train

Holding device, in particular opening scissors, for tilt, turn and tilt windows

Dr. SU/dp 45 _{992 a}

19.01.1998

•T

Holding device, in particular opening scissors, for tilt, turn and tilt windows

The innovation relates to a holding element for tilt, turn-tilt or slide-tilt windows, a tilt, turn-tilt or slide-tilt window with such a holding element and a slider for such a holding element according to the generic term of the independent claims.

Conventional tilt, turn-tilt or slide-tilt windows can be tilted from the closed, vertical position into a tilt position. A holding element or a scissor arm is provided to guide the tilting movement, which usually has a scissor arm, one end of which forms the scissor bearing, for example, and the other end of which is connected to a slider that runs in a rail. If the window is tilted open, the slider hits a stop that defines the tilt position.

Windows of this type are described, for example, in CH-627 226 and EP-A-385 414.

These windows have the disadvantage that only one tilt position is provided, i.e. the tilt opening angle of the window sash cannot be chosen arbitrarily.

The present innovation is therefore based on the task of equipping a window or a holding device of the type mentioned above in such a way that various, freely selectable tilt opening angles are possible.

This task is solved by the holding element or the window and the slider according to the independent claims.

By equipping the slider with means to increase the static friction for its movement in the rail, it can use this static friction to hold the window in any tilt position.

Dr. SU/dp 45 992 a

19.01.1998

Preferably, one or more permanent magnets are used as a means of increasing the static friction. These have the advantage that they only get stuck when the window is stationary and that when it moves they are released by the play of the mechanism and are slightly lifted or tilted. The permanent magnet(s) thus ensure that the window is held securely in the desired position without generating too much resistance when the window is tilted. Furthermore, the magnets are not subject to mechanical fatigue or wear.

The slider can be designed so compactly that it can be placed in a commonly used U-rail as a replacement for conventional sliders. This makes it extremely easy to equip existing systems with an innovative opening scissor.

Another advantage of the innovation is

in that the window opened in a tilted position can be moved by very strong gusts of wind, but that this movement is dampened in contrast to conventional windows, so that violent slamming and damage to the window are prevented.

The retaining element is particularly suitable for installation as a scissor-stay in tilt-and-turn or tilt-and-slide windows.

Further advantages and applications of the innovation emerge from the following description of an embodiment based on the figures. They show:

Figure 1 a tilt and turn window, Figure 2 a scissor-stay,

Figure 3 shows a section through the extension scissors according to Figure 2, and

Figure 4 shows the slider of the extension scissors according to Figures 2 and 3.

The figures show a tilt and turn window. Such a window is designed in such a way that its sash can be turned around a vertical

Rotation axis 1 and on the other hand around a horizontal tilt axis 2. The desired window movement is selected by the position of the handle 3. As mentioned at the beginning, the innovation can also be used in a sliding tilt window, which can be moved parallel in a horizontal direction and tilted around a horizontal tilt axis.

As shown in Figure 1, the window sash of the tilt and turn window is attached at the top via a scissor stay 4. This scissor stay 4 is pivotably mounted on the scissor stay bearing 5.

Figure 2 shows the extension scissors 4 in detail. It comprises an extension arm 6, an auxiliary arm 7 articulated on the extension arm 6 and a rail 8.

The auxiliary arm 7 is attached to the rail 8 via a swivel joint 9. The extension arm 6 is connected to a slider 11 through a longitudinal opening 10 in the rail 8, which can be seen in Figure 3 and Figure 4. Figure 3 shows a section through the rail 8 in the area of the slider 11, Figure 4 shows a schematic view of the slider 11.

The rail 8 is designed as a U-profile and has a base part 8a and two legs 8b that are perpendicular to it. The legs are attached to the frame of the window sash (not shown). The slider 11 runs inside the U-profile. It can be made of plastic, metal or other materials. It has a neck 11a that protrudes through the longitudinal opening 10. A bolt 12 with a fastening ring 13 is arranged in the slider, which forms the articulated connection with the extension arm 6.

The height of the neck 11a is greater than the thickness of the base part 8a, so that the neck slightly protrudes over the base part. This prevents the mechanism from jamming.

On the side of the neck 11a, the slide 11 forms two shoulders, each of which has a permanent magnetic band 15 glued to it. These bands act as permanent magnets together with two steel bands 16, which

are attached to the rail 8 and extend on both sides of the longitudinal opening 10.

The way the opening scissors work is simple. In every tilted position, the slider is pulled to the steel strips 16 via the magnetic strips 15, creating a connection with relatively high static friction that is so strong that it can hold the window sash against gravity and against light gusts of wind. On the other hand, the strength and size of the magnetic strips 15 are selected so that the window can be moved by hand. As a rule, a relatively high adhesive force will only have to be overcome in the first moment. As soon as the window is set in motion, the slider 11 will tilt slightly because the mechanism and in particular the joint at the bolt 12 has some play. This reduces the friction force during the movement of the window.

In the present embodiment, the slider 11 and the rail 8 are made of aluminum. The rail 8 can, however, also be made of steel, in which case the steel strips 16 can be omitted. The slider 11 can also be designed as a whole as a permanent magnet, so that it does not have to be equipped with special magnetic strips.

Instead of a magnetic coupling between slider 11 and rail 8, a mechanical coupling can also be used, for example in the form of a spring. However, such a solution has the disadvantage that it tends to be subject to greater mechanical wear and fatigue and can also lead to the carriage becoming jammed.

As mentioned, the innovation can also be used in

Sliding tilt and slide windows can be used. The scissor arm can be positioned at the top or side of the window. The auxiliary arm 7 can also be omitted, particularly in the case of tilt windows, so that the scissor arm becomes a holding device of conventional design, but with an innovative slider.

Claims (10)

Protection claims 1., Holding device for a tilt, turn-tilt or slide-tilt window with a projection arm (6) which at a first end merges into a swivel joint (5) and at a second end is connected to a slider (11), wherein the slider is arranged displaceably in a rail (8), characterized in that the slider (11) and/or the rail (8) has means (15, 16) for increasing the static friction between the slider (11) and the rail (8). 2. Holding member according to claim 1, characterized in that the means (15, 16) for increasing the static friction comprise at least one permanent magnet. 3. Holding member according to one of the preceding claims, characterized in that the rail (8) forms a U-shaped profile with two legs (8b) and a base part (8a), in the interior of which the slide (11) is arranged. 4. Holding member according to claim 3, characterized in that the base part (8a) has a longitudinal opening (10), and that the slider (11) is connected to the extension arm (6) through this longitudinal opening (10). 5. Holding member according to claims 2 and 4, characterized in that the at least one permanent magnet (15) is arranged on the side of the slide (11) which faces the base part (8a). 6. Holding member according to claim 5, characterized characterized in that at least one track (16) made of steel, which interacts with the at least one permanent magnet (15), is arranged on the base part (8a). 7. Holding device according to one of claims 5 or 6, characterized in that the slide (11) has two permanent magnets (15) which interact with the rail (8) on both sides of the longitudinal opening (10). 8. Holding device according to one of the preceding claims, characterized in that an auxiliary arm (7) is arranged in an articulated manner on the extension arm (6), which is connected in an articulated manner to the rail (8). . 9. Tilt, turn-tilt or slide-tilt windows with a holding member (4) according to one of the preceding claims, characterized in that the static friction of the slider (11) in the rail (8) is designed such that the window is held in any tilt position by the static friction. 10. Slide for a holding member (4) according to one of claims 1-8.