WO1994011592A1

WO1994011592A1 - Positive control guide for the movement of a skylight window

Info

Publication number: WO1994011592A1
Application number: PCT/DE1993/001057
Authority: WO
Inventors: Ernst Lahmann
Original assignee: W. Hautau Gmbh
Priority date: 1992-11-06
Filing date: 1993-11-05
Publication date: 1994-05-26

Abstract

A positive control guide provides for smooth adjustment of a skylight window (1). The window (1) is moved in two planes, the closure plane (10) and the main adjustment plane (9). Pairs of rollers (12, 13, 14) run on running or supporting surfaces (8, 9, 10; 10a, 10b, 10c) which may be arranged in two or three superimposed planes. In its main adjustment plane (9), the window (1) moves in a single plane. Said roller pairs may run in several planes (8, 9, 10). For the window to reach its closed position the roller pairs enter short branch sections (10a, 10b, 10c) which extend in a substantially horizontal direction, whatever the inclination of the elongated main guiding section (9). In addition, a temporarily decoupled constant force (39) may be exerted on the window during its adjusting movement (S) by a slotted guiding piece (50).

Description

Guide to the forced control of the movement of a

Skylight casement

The invention relates to a guide for the compulsory control of the movement of a roof window sash with the features of the preamble of claim 1.

With heavy skylight sashes lying in the sloping roof, a mere tilting movement of the sash or manual operation is not always possible. Large and heavy sashes are often used, which, in addition to having an additional sash assigned in a certain way, must open particularly large ventilation openings, not only to enable normal intensive ventilation, but also to safely and quickly extract smoke or vapors in the event of danger to enable.

In order to enable safe and reliable movement, guidance and support of the sash even with a large ventilation opening and a reliable seal in the

To ensure the closed position, the invention provides a guide for the forced control of the movement of a roof window wing of this type with the configuration according to the teaching of claim 1.

Due to this design, a large and heavy sash is held securely and sealingly on the seals on the frame in the closed position and is nevertheless safely and evenly parked for movement from the frame and guided parallel to the frame. This is possible with a simple guide using the elongated guide rails. The lifting and shifting movements, like the pressing of the wing in the closed position, can be carried out with the aid of motor drives which can be supported and held parallel to the guide rails and which are connected to the wing by means of drivers (claim 5). This arrangement is particularly suitable for a displacement movement of the Wing from the closed position in the direction obliquely downwards, so that the ventilation opening can be exposed in the upper area of the frame, if a folding wing is arranged above this wing in the sloping roof, so in cooperation and with synchronous opening of the two wings a very special large ventilation opening can be exposed by moving one wing down while the other wing is folded up.

However, if the sliding movement of the roof window sash is to take place without a motor drive, then the reliable movement, guidance and support can take place. The sash is adjusted between two levels, one level is its closed position, the other level is the level in which it can be moved in the direction of the sloping roof by the guide rails. The entry and exit of the wing into and out of the closing plane is achieved by the essentially horizontally running short branch sections, which run essentially horizontally regardless of the inclination of the wing plane, so that the opening and closing of the wing requires little or no vertical force components . This benefits a user who only has to exert small forces to issue a possibly heavy wing.

In order not to have to exert any significant forces in the main direction of movement, which runs in the roof slope direction (wing plane direction), a compensation force is exerted on the wing via compensation force elements arranged on both sides of the wing (claim 10), which achieve that it regardless of its position of displacement in the main direction of movement is adjustable with essentially the same force and this force is very low because the compensating force elements essentially compensate for the sash weight which is effective in the direction of the sloping roof.

If, in addition to the compensation force, a slack is also introduced, which is only effective at the moment the sash is opened or closed, the compensation force is for the short adjustment process from the closed position to the raised position or vice versa ineffective. The lifting and closing process, which is already smooth due to the horizontal branch sections, is thereby further facilitated, but the sash is kept smoothly in its main adjustment movement in the open state, because the compensating force comes into its own here.

The lots can be realized by a slot piece (claim 13); it can also be accomplished by a short, straight (not twisted) end portion of a known torsion bar of a compensation force element which otherwise applies a substantially constant force regardless of its elongation between its attachment ends.

A particularly slim shape of the wing and the fitting that guides it is achieved when only two levels are provided, in and between which the rollers of the wing move (claim 6). If an even more precise guidance and support of the wing - be it a hand-operated or a motor-operated wing - is to be achieved, then the pairs of rollers on the wing can not only be spaced apart in the wing plane, but also be spaced perpendicular to the wing plane.

The particularly secure support of the wing during its movements in the guide rails is achieved by the vertical and longitudinal displacement of the pairs of rollers on the wing (claim 1). In this case, the closed positions of these pairs of rollers in the guide rails can be assigned special inserts (claim 2; claim 7) which carry the branch or switch sections for the rollers which run obliquely to the longitudinal direction of the guide rails. This results in two or three superimposed levels in the guide rails, in which running or support surfaces for the rollers of the wing are arranged. At the same time, depending on the sliding movement of the wing, the desired lifting or pressing movement of the wing is automatically obtained from or into the closed position, in which the wing weight does not have to be applied by the user or motor by the essentially horizontal alignment of the short branch sections. The guide rails can be angular profile rails which have the various raceways or running surfaces and insert pieces used in a specific arrangement. The second leg of the guide rails serves primarily for fastening them to the frame, but also, if appropriate, for receiving and supporting and mounting the motor drives, which can extend along the guide rails.

A third pair of rollers can be arranged in the wing plane or offset perpendicular to it so that it runs into the guide rails from their lowermost end section, just before the wing is transferred to the closed position. At the upper end of the lower short guide section, a horizontal branch section corresponding to the horizontal branch sections mentioned is provided, so that all three pairs of rollers provided run parallel and simultaneously into the substantially horizontal branch sections when the wing is moved into the closed position and when the wing is lifted into the lifting position A. leave this.

The invention pays particular attention to the use of the elongated constant force elements which are arranged between the frame and sash so that they pivot by a small angle during the sliding movement of the roof window sash. The use of these (known) constant force elements for the roof windows to be installed obliquely makes the cable pull mechanisms previously required for the wings installed in the roof slope unnecessary (claim 15).

The coupling of a constant force element on each side (in the sloping side) of the roof window via a short-stroke lots (claim 16) allows the easy despite the substantial compensation of the sash weight for adjustment movements in its adjustment plane E ^

Lifting out and easy return to the closing level E- of the wing. Both levels mentioned are parallel to the wing level. The invention is explained in more detail below using schematic drawings of exemplary embodiments. Show it:

Figure 1 is a skylight in a vertical plan view of the sloping roof surface;

Figure 2 on a larger scale, a vertical section A-B through the parts of the guide 2, 3 running parallel to the direction of displacement of the sash and the sash 1 and the frame 4, with the sash closed;

Figure 3 in the same representation as Figure 2, the arrangement with the wing 1 open;

Figure 4 is a side view of the guide rail of the guide of Figure 1 with the wing in the closed position;

Figure 5 in the same representation as Figure 4, the guide rail with the wing open and pushed down;

FIG. 6 shows an alternative form of the guide 2, 3 from FIG. 1 with a running rail 5 which guides the rollers 12, 13, 14 of the wing 1 in one plane for adjustment movements and holds them in the closed position in a second plane;

6a shows the part indicated in figure 6 with an XX sectional view in a direction vertical to the frame plane direction, for explaining the two levels between which the blade 1 is movable, in particular the closing plane E _j _ and the plane of movement E _2;

Figures 7a, 7b and 7c three schematic representations of the wing movement when attaching the wing 1 and the window frame 4 in an inclined roof direction of about 30 °, the guide rails 5 being omitted for the sake of clarity, but can be equipped as shown in Figure 6 or Figure 5 show; Figure 8 is an enlarged cross section of the slot piece 50, which is arranged in Figures 7a, 7b and 7c at the upper end of the compensation force element (39) there, in an exemplary position according to Figure 7c.

The wing 1, which is shown in FIG. 1, has guides 2, 3 under a cover that replaces the wing overlap on the two wing sides, which allow the wing to be displaced in the oblique direction of the roof. FIGS. 2 and 3 are cross sections along the section lines A-B of FIG. 1.

In the figures, 1 denotes the casement and 4 the frame. On the lateral frame spars one leg 6 of an angular guide rail 5 is attached, on the other leg 7 guide and

Support surfaces 8,9,10 are formed, on which rollers 12,13 can be supported, which are fastened with a mounting plate 11 on the casement side. Arranged on the guide rail 5 is a motor drive 15 which extends over the length of the side of the wing and is fixedly connected to the wing frame 1 with its movable member via a driver 16. The entire arrangement is covered by a hood-shaped cover 17, which is firmly connected to the casement 1 and can sealingly cooperate at 18 with a corresponding seal 19 on the frame or on the guide rail 5, as can be seen from FIGS. 2 and 3.

The rollers on the wing are arranged in pairs on both sides in axial alignment, the wing being two pairs of rollers as

Has role group. The pairs of rollers 12 and 13 are, as can be seen from FIGS. 4 and 5, with respect to the plane of the casement both in the direction of displacement and in the direction perpendicular to each other. There is a different one in the guide rail for each pair of rollers

Management level 8 and 9 provided. In addition, insert pieces 30 are inserted in the guide rails at selected points, which guide switch sections 31 for the Provide guideways. As can be seen from FIGS. 4 and 5, the two insert pieces 30 are arranged in the same sense and with the same dimensions in the direction of displacement and perpendicular to one another, as is the case with the pairs of rollers 12 and 13. The

Switch sections 31 connect the different height levels of the running or support surfaces 8, 9, 10 for the running rollers.

Figure 5 shows the arrangement with dash-dotted wing 1 in the open position. The offset in the direction of displacement of the pairs of rollers 12, 13 is designated 32. It ensures that the sash weight is securely picked up and set down when it moves on the guide rails 5, 6, 7. The distance in the direction of displacement of the pairs of rollers corresponds to approximately half the possible maximum displacement movement of the sash between the closed position and the maximum open position. The size of the opening to be exposed in the sliding direction is designated 33. The switch sections 31 in the inserts 30 ensure a parallel lifting and pressing of the wing at the beginning of the opening movement or at the end of the closing movement, the angle of the guide rail switch 31 in the insert 30 being adapted to the roof slope so that the movement of the wing into the lifting position (Start of opening) and from the lifting position when transferring to the closed position can be achieved without a substantial vertical force component. The sash is thus reliably and securely held and guided and allows easy opening over a large area.

FIG. 6 schematically shows the guidance of a roof window sash 1 when it is kept in a particularly narrow design. Only one guide surface 9 is provided, which runs parallel to the sloping roof and has two upper inlet sections 10a and 10b and a lower inlet section 10c, which lead into the second plane - the closing plane - of the window sash 1. The elongated straight section of the guide is continuous. The short inlet and outlet sections 10a, 10b and 10c in the inserts 30a, 30b, 30c of the entire guide rail 5 are essentially horizontal. A role of the roller pairs 12, 13, which are guided in the guide rail shown in FIG. 6, is shown in each case. These rollers 12a, 13a are shown in two wing positions, on the one hand in the closed position, in which they have run in at the rear end in the two upper inlet sections 10a, 10b which are close to one another. This is the wing closed position. The second wing position shown is the maximum open position at which the two spaced rollers 12a, 13a come to rest in their end position at the lower end of the guide. The deep-lying roller 12a has run against a stop 5a, which is arranged in the course of the guide 5 to determine the maximum opening travel of the wing.

A further inlet switch 10c is provided below the stop 5a, which corresponds to the section 30b. In it, the roller 14a, which is a roller of the axially aligned roller pair 14, is only held in the wing closed position, while the roller pair 14 is in the open position of the wing without guidance, that is to say exposed. In order to accommodate the pair of rollers 14 shortly before reaching the closed position of the wing in the guide rail 5 on the guide plane 9, an expanding guide receiving section 9a can be provided at the lower end of the guide rail 5.

The entire guide rail 5 can be embodied integrally or in one piece with its elongated one guide section 9 and its three short substantially horizontally running inlet sections 10a, 10b and 10c. Then a guide rail 5 is only suitable for a sloping roof. Modularly, a large number of sloping ceilings can be equipped with the guide rail according to FIG. 6 if the two upper sections 30a and 30b and possibly also the optional third section 30c are interchangeable. They then form short switch sections 30a, 30b, 30c, which have already been explained in the context of FIGS. 4 and 5 as switch sections 30 were. These switch sections can be designed such that they have different inclinations of the inlet and outlet sections 10a, 10b, 10c depending on the roof slope, as is shown schematically with the switch sections 30b 'and 30b "for the switch 30b. The different angles that the

Inlet sections 10b 'and 10b "in this case opposite the direction of the elongated tread 9 can then be matched to the respective roof slope in which the window is to be installed. With only a limited number of switch sections 30, 30a, 30b and 30c, of which the

Switch sections 30b and 30c can even be identical, almost all angles of roofs can be compensated so that the short inlet and outlet sections 10a, 10b and 10c each run essentially horizontally, in order to raise almost no vertical force component when lifting and running in the wing to have to.

Even if the modular switch sections do not have the exact angle that is required for a certain roof slope, the switch section that best guarantees a horizontal alignment of the short inlet section can be used for this roof. In this way it can be ensured that the vertical force component when the wing is raised can be reduced to zero with only a limited number of rail pieces or switch pieces or with slight inclinations of the short ones

Inlet sections 10a, 10b, 10c from the horizontal only small vertical force components have to be applied.

The vertical force can thus be kept independent of the sloping roof.

If in the opening adjustment area of the wing 1, after lifting the wing from the short inlet sections 10a, 10b and 10c mentioned up to the lowest end position at the stop 5a, no motorized wing drive is provided, as was explained with FIGS. 2 and 3, but instead if the wing movement is to be carried out by hand, the movement shown in FIGS. 7a, 7b and 7c shown compensation force elements 39 are pivotally hinged laterally on the wing 1 with their longitudinal axis 39a. They allow compensation of the leaf weight acting in the adjustment direction so that the leaf is balanced in every open position, that is to say it does not move in the closing direction or further in the opening direction. Only small adjustment forces then have to be applied by hand in order to move the leaf in the closing direction or further in the opening direction.

These compensation forces are only effective in FIGS. 7 when the sash is in the open position S, but they are not effective when the sash moves from the closed position into the raised position (indicated by arrow A) or from the smallest open position to the closed position is moved, which is achieved by a slit 50.

Before the slit piece 50, which achieves an initial decoupling of the compensating force from the wing movement, is explained briefly, the elements 39 themselves, which are able to apply a force that is independent of their elongation.

These compensation force elements consist, for example, of two mutually extending springs that mutually neutralize their tensile force (inner and outer springs 41), which can be precisely matched to the effective weight of the sash (depending on the sloping roof and the window size). For this purpose, compensation force elements are commercially available under the name "Torso", each specifying a specific weight class.

The use of these compensation force elements, which do not apply a spring force dependent on the lengthening, but rather an essentially constant force independent of the lengthening, makes it possible to omit the conventional cable-pull mechanisms with which oblique roof window sashes have so far been kept in balance. At the upper end of the constant force elements 39, a slot piece 50 is shown in FIG. 7, which is shown enlarged in cross section in FIG. It forms a separate ^lots' lift-off of the wing 1 from its closed position in

Cover frame 4. The slack is achieved in that a roof-mounted bolt (arranged on the cover frame 4 or the running rail 5) is displaced in a longitudinal slot 51. While the bolt is in the closed position of the wing 1 at the lower end of the longitudinal slot 51, it lies in the

Lifting division A (at the beginning of the opening position of the wing in the direction of the arrow S) at the upper end of the longitudinal slot 51. This begins the effect of the constant force of the element 39 on the wing 1. It is then constantly effective with the elongated spring 41 until the wing has reached the lower stop 5a. This is shown in Figure 7c. If the wing is moved back from the adjustment position shown in FIG. 7c in the direction of its closed position in the direction of the arrow S shown, then it arrives in the adjustment position which is sketched in FIG 39 picks up. The wing can be brought into and out of its closed position without great effort, which is shown in FIG. 7a. This adjustment of the wing is short and, if it is combined with the horizontal switch sections according to FIG. 6, it can also be carried out by persons who are able to exert only little force.

The connection of the slot piece 50 with the balancing constant force of the element 39 and the horizontal inlet sections 10a, 10b, 10c can thus provide the total ease of movement of an otherwise difficult to operate roof wing in the direction of the sloping roof.

The slot piece 50 is shown in cross section in FIG. 8. It consists of a rectangular metal plate (tab), which has an elongated slot 51 approximately in the middle, the Width is adapted to the bolt diameter 52. The lower end of the tab is attached to the outer spring 41 of the constant force element 39 via a rivet attachment 43. If a split pin 53 prevents the slotted piece 50 from sliding off the bolt 52 during operation, the interchangeability of the spring element 39 can nevertheless be made possible. Depending on the slope of the roof and the weight of the sash, a constant force element 39 (for example the torso "spring" mentioned above) can be interchangeably arranged on the roof window. Damaged constant force elements can also be easily replaced.

In addition to the longitudinal displacement on the bolt, the slotted piece also permits a pivoting movement of the axis 39a of the compensation force elements 39, which ensures continuous alignment of all parts of the element 39, regardless of the lifting / displacement movement of the wing 1.

Without the slot piece 50, a loose effect can also be achieved with a special design of the twisted (not shown) inner rod of the constant force element. For this purpose, the technical design of the known elongated constant force element will be briefly discussed. It consists of a precision hollow tube 40 with a first spring 41 (outer spring) recessed therein. The hollow tube 40 is rotatably articulated on a fastening tab 42 on the wing 1. The

Outer spring 41 is either attached to the slot piece 50 (with the constant force element unchanged) or directly linked to the bolt 52 with the changed constant force element described below, via an upper attachment tab 43.

In the outer spring 41 runs a wound inner spring, which is twisted or relaxed by a twisted rod with a variable thread pitch so that an inner spring force counteracts the external spring force. Becomes the elongated twisted rod with variable thread pitch

(Torsion bar) designed so that it has at one end a short, untwisted flat piece corresponding to the opening movement A of the wing 1, so that by Slot piece 50 lots can also be reached without this slot piece. In the almost relaxed state, the outer spring 41 has essentially no force; the entire force would be exerted by the inner spring which has been pulled open. The opening is now avoided by the straight piece in the otherwise unchanged twisted inner rod, so that just the short lifting movement of the wing 1 is coupled only with the low force of the outer spring 41. In terms of effectiveness, this is almost equal to the total decoupling of the spring force by the slot piece 50.

It should be emphasized that the smoothest lifting movement of the wing 1 is achieved when the slack and the horizontal alignment of the inlet / outlet sections of the switches 10a, 10b and 10c are used, combined with a constant force element that is on the wing and roof slope is coordinated. Nevertheless, all three measures can also be used independently, with only a moderate increase in the respective adjusting and lifting forces compared to the combined use.

An additional safeguard was achieved by the third pair of rollers 14, which runs in at the low-lying end of the lateral guide 5 shortly before reaching the closed position or lifting position. This pair of rollers is also advantageous for the large-area locking of the roof window in the closed position, but is not absolutely necessary for its function with the two upper roller pairs 12, 13 spaced apart in the sash plane.

FIG. 6a shows the section indicated by XX in FIG. 6 in a vertical plane relative to the sash plane of sash 1. The section illustrates the frame spar 4 and the sash 1 which can be displaced in an adjustment plane E ₂ and which has its closed position in the plane E ^ Has. The wing 1 is guided by pairs of rollers 12, 13 (possibly also 14) on a supporting surface or plane 9, which forms the track for the roller 12 a shown in section in the adjustment plane E ₂ . In the Closing plane E- _j _ the roller 12a shown in section has entered the inlet section 10b and lies against the rear semicircular end thereof.

Except for the attachment of the constant force element 39 now described, the structure of FIG. 6a is otherwise designed like the section according to FIG. 3 (but without a motor).

The constant force element 39 is articulated at its two ends 42, 43. With its lower end 42 it is

Hollow tube 40 hinged to a bracket 16 which is attached to the outside of the wing spar 1 extending in the sloping direction so that it forms a U-profile around the running rail 5. The other end 43 is articulated via the slot piece 50 already described on the running rail or the frame. The constant force element 39 is thus located above the support bracket 16 outside the running rail 5, but still above and in the area of the frame spar 4. The constant force elements in the double-articulated form are provided on both sides of the wing on both oblique frame spars 1. An approximately L-shaped bent metal shield 19a can protect the running rail 5, U-bracket 16 and the easily pivotable constant force element 39 against wind and weather influences, for which elastic rubber lips 19 additionally take care of the free edge of the

Shield 19a cooperate sealingly in the closed position E _{1 of} the wing.

The use of the easily pivotable constant force elements 39 arranged on the outside enables the cable pull mechanisms previously used to be eliminated in the case of inclined roof windows, enables modularization by adapting the specific constant force to the respective sash weight and enables simple mounting and adjustment of the roof windows without threading of ropes and weights with

Counterweights would be required. Due to the saving of weights and counterweights as well as the deflection pulleys for the cable mechanism, the overall size can be reduced despite maintaining the compensation of the entire sash weight.

Claims

Expectations:

1. Guide for the compulsory control of the movement of a roof window sash (1) on an inclined window frame (4),

- In which the sash is lifted parallel to open from the frame and then parallel to the frame level, in particular obliquely downwards, can be moved;

- In which the wing (1) on its wing frame areas parallel to the direction of displacement two each

Has roller groups (12, 13) of pairs of rollers (12; 13) which are each axially aligned transversely to the direction of displacement and which are arranged offset with respect to one another in the direction of displacement (32) and perpendicularly thereto;

- In the elongated guide rails (5; 6, 7) are provided on the corresponding frame sections (4) in the sliding direction, which on one of the legs of the frame (1,4) approximately vertical leg (7) superimposed raceways in three superimposed levels arranged running or support surfaces (8,9,10) for the pairs of rollers (12; 13), which have a mutual vertical distance equal to the amount of displacement of the pairs of rollers perpendicular (20) to the plane of displacement, the running and support surfaces (8 , 9, 10) can be connected to one another in a predetermined manner.

2. Guide according to claim 1, characterized in that in the - to the planes of the frame (1,4) approximately - vertical legs (7) of the guide rails (5) at selected locations insert pieces (30, 30a, 30b, 30c; 30b ', 30 "), each with two running or support surfaces, which run obliquely to the direction of displacement

Points (31; 10a, 10b, 10c) can be used for the impellers (12, 13, 14).

3. Guide according to claim 2, characterized in that the insert pieces designed as fixed track switches (30, 30a, 30b, 30c; 30b ', 30 ") each in the amount of the position of the running wheels (12, 13, 14) which they in take the wing closed position, are arranged.

4. Guide according to claim 3, characterized in that - seen in the sliding direction - the mutual distance between the upper two insert pieces (30) is approximately equal to half the displacement dimension (33) of the wing (1).

5. Guide according to one of claims 1 to 4, characterized in that the other leg (6) of the angular guide rails (5) for fastening them to the frame (4) and at the same time for supporting an elongated (motorized) sliding drive (15) for the Wing (1) is formed.

6. Guide for the compulsory control of the movements of a roof window wing (1), in which the wing (1) in two parallel to the wing plane

Levels (9, 10) can be adjusted on at least two pairs of rollers (12, 13, 14) spaced apart in the wing plane, which are positively guided on elongated guide rails (5), the adjustment movement of the roof window wing (1) from one level (main movement level ; 9) into the other - lower - level (closing level; 10) via - in the installed state - essentially horizontal short branch sections (10a, 10b, 10c).

7. Guide according to one of the preceding claims, in which the branch sections (10a, 10b, 10c) or support surfaces (10) are essentially 5 geometrically adapted to the elongated guide rail (5) or its running surface in the main plane of movement (9), however, are inclined towards it so that they (10; 10a, 10b, 10c) - in the installed state - run essentially horizontally, regardless of the angle of the elongated guide rails (5) from the horizontal.

10 8. Guide according to claim 6 or 7, wherein the short branch sections (10a, 10b, 10c) are interchangeable modular sections (30a, 30b, 30c) of the guide rail (5).

15 9. Guide according to claim 6 to 8, wherein the guide rails (5) is a - in cross-section - box-shaped profile rail with one-sided open longitudinal slots in which the rollers (12,13) can be used.

0 10. sash weight compensation for a sash guide according to one of the preceding claims, in which

- A compensation force which is essentially independent of the adjustment position of the wing (1) is exerted on it (39; 40, 41, 42, 3) in order to balance it in every 5 shift position in the wing plane direction and to keep it easily displaceable;

- A slack (50, 51, 52) influences the compensation force in such a way that when the sash (1) is adjusted from the closed position to the lift-off position (A) - beginning of the 0 downward movement (S) - no compensation force acts on the sash (1) .

11. Weight compensation according to claim 10, in which two elongated compensation force elements (39) 5 on both sides of the wing (1) between it and the frame (4) or guide rail (5) are arranged, which are essentially independent of their elongation Apply compensating force adapted to sash level and sash weight to balance the sash (1). O

12. Compensation according to claim 10 or 11, in which the compensating force element (39) contains at least one flat bar (torsion bar) which is twisted in itself and its slope varies, the short bar (50; 51, 52) at one end, straight and not twisted section.

13. Compensation according to claim 10 or 11, in which the lots (50, 51, 52) by means of a tab (slot piece; 50) having a longitudinal slot (51)

Direction of action (39a) of the compensation force, in particular at the upper end of the compensation force elements (39), is attached.

14. Compensation according to claim 13, wherein the longitudinal slot (51) is guided in a fixed frame side or guide rail-side bolt (52) and has such a length that the bolt shifts from one end of the longitudinal slot (51) to its other end when the sash (1) is moved from the closing level to the lifting position (A) - and vice versa.

15. Use of a (known) elongated

Compensating force element (39), regardless of its length / elongation (41,39) between its two

Articulation points (50, 51, 52, 43; 42) exert a substantially constant force between these points for sloping roof sliding windows (1,4).

16. Use of a short-stroke loose (50, 51) between one of the articulation points (42, 43) of the compensating force element (39) and the frame (4) or the wing (1) for decoupling the sloping roof sliding window (1) from the constant force otherwise acting on it from the frame essentially during adjustment between the sliding plane (E ^) parallel to the sash plane and the adjustment plane (E ₂ ).