EP0534261A2 - Blind for a non-rectangular (glass) area - Google Patents

Abstract

The invention relates to a blind for a (glass) area, which is possibly to be shaded, in particular a non-rectangular area, with a hanging which in its shape corresponds essentially to the shape of the (glass) area, can be held on its first edge on a first holding means in the form of a stationary rail or the like, is fastened on a second edge lying essentially opposite the first edge to a second holding means in the form of a movable rail or the like which can be held detachably in position (at least) in the closed blind position, and which is guided on a first strand-shaped flexible guide means in the form of a cord, a tension wire, cable or the like, which runs between the first holding means and a stationary third rail or the like through the movable second holding means, as well as on a further strand-shaped flexible guide means, a first guide means, which is pretensioned by a (first) spring and can be held in a tensioned manner by the (first) spring in any position of the movable second holding means, running (with its strands) adjacently to the longitudinal edges of the hanging, and the second guide means, which is pretensioned by a second spring, running between the strands of the first guide means, and the strands of one guide means, which is in frictional engagement with the second holding means, intersecting in the region of the second holding means and being guided from one of its end sections to the other, from which they run in each case to the third rail or the like, the first guide means being in frictional engagement with the second holding means. <IMAGE>

Description

The invention relates to a curtain for a possibly to be shaded (glass) surface, in particular a non-rectangular surface, with a curtain corresponding in shape essentially to the shape of the (glass) surface, which at its first edge on a first holding means or the like in the manner of a fixed rail. is to be held, or the like on a second edge substantially opposite the second edge on a second holding means in the manner of a movable rail. is attached, which (at least) in the closed curtain position is to be held releasably in position, and which on one first strand-shaped, flexible guide means in the manner of a cord, a tension wire, rope or the like. is guided, or the like between the first holding means and a fixed third rail. runs through the movable second holding means, as well as on a further strand-shaped, flexible guide means, a first guide means, which is pretensioned by a (first) spring and which is to be tensioned by the (first) spring in any position of the movable second holding means (with its strands) adjacent to the longitudinal edges of the curtain, and that second guiding means, which is pretensioned by a second spring, runs between the strands of the first guiding means and the strands of a guiding means, which is in frictional engagement with the second holding means, intersect in the region of the second holding means and from one end section to the other end section, from which they or the like to the third rail. run.

Such curtains with non-rectangular geometric shapes (which, in addition to the triangular and trapezoidal shapes already mentioned above as examples, also include other polygons, segments of circles, and the like, the above geometric terms not being strictly geometric, but to be understood in the broadest sense and, for example, in the case of a triangular or trapezoidal shape, are also intended to include corresponding geometrical structures with non-linear side edges) are increasingly used, for example, and in particular for shading conservatories, greenhouses or the like. needed to be able to shade corresponding geometric sections of the glass surfaces there if necessary.

It is necessary not only to guide the pleated curtain or the curtain to be gathered in a known manner from its closed position into the open position or vice versa, but also in the open and closed position to keep appropriately managed. This is generally carried out expediently by means of strand-shaped guide means such as tensioning wires, cords or the like, which (at least) expediently are guided adjacent to the side edges of the curtain through openings which are expediently formed beforehand in such a way that the strand-shaped guide means alternately in sections on the front or rear of the curtain runs, so that the strands of the strand-shaped guide means, for example, in the case of a triangular or trapezoidal curtain (corresponding to the surface to be shaded, if necessary) also essentially follow the corresponding shape, as is the case, for example, with the subject of DE-GM 89 12 709 is the case, i.e. in the case of a curtain in which the guiding means designed as tension wires form a corresponding trapezoid independently of the respective opening or closing state of the curtain, for example in the case of a trapezoidal curtain, and thereby between a (longer) stationary upper rail (or vice versa) run directly parallel to the side edges of the curtain.

In addition, the partly perpendicular and partly oblique strands of the guide means still extend through a movable middle rail, which is arranged between the upper rail and the lower rail and, depending on the desired opening or closing state, may be more adjacent to the upper or lower rail , in addition to the curtain known from DE-GM 89 12 709 in the case of a trapezoidal shape, there are (and must be) two further tension wires between the stationary upper rail and the stationary lower rail, which extend from the end sections of the upper rail to the longer one , stationary bottom rail. These additional tensioning wires are necessary in the previously known curtain because the movable middle rail is made of several parts (namely three parts), namely has a central section, the Length is substantially equal to the length of the upper rail, and two side sections each adjacent to the central section, the total of which is equal to the difference in length between the lower and upper rails, so that the outer sections of the movable central rail, each articulated with the central section of the middle rail are connected, must run in the closed state of the curtain to the middle section of the middle rail and horizontally and therefore parallel to the bottom and top rail, because the outer sections of the movable middle rail, to which the one edge of the curtain is attached, at their respective free end of a strand of the guide means formed from tension wires are penetrated.

Quite apart from the fact that the curtain known from DE-GM 89 12 709 is extraordinarily complex due to the multi-part design of the movable middle rail and the required articulated connections, it is obviously extremely disadvantageous, in particular with a curtain made of pleated material, because the folds of the pleated material in the area of the triangular side sections can only maintain their intended course (parallel to the lower and upper rails) in the open state and are deformed in the area of the articulated connections at the start of the opening process, this deformation process being evident in the course of the opening movement increases and the bottom folds of the curtain - depending on the trapezoidal shape - can be deformed to such an extent that there are permanent kinks in the curtain material, which are not only perceived as highly undesirable, but also become a problem impairment of functionality.

In addition, it is perceived as bothersome in the curtain known from DE-GM 89 12 709 that the guide means forming tension wires in the open state of the curtain run obliquely to the first or second edge of the curtain, and not in a direction in which (with the exception of rafters, if any) the vast majority of struts and other construction elements of a winter garden, greenhouse or the like. the like runs.

From DE-GM 89 09 836 a guide device for a curtain, in particular a pleated or louvre blind or a roller blind, is known which - as far as it relates to a curtain - is relevant in this category. The curtain known from this document, however, avoids the disadvantages of the curtain according to DE-GM 89 12 709 described above, but it, too, cannot yet optimally meet the requirements for a generic curtain.

In order to avoid the disadvantages described above with reference to the prior art according to DE-GM 89 12 709, a box-shaped rail is provided in the curtain according to DE-GM 89 09 836 at the fastening point of the lower edge of the curtain, in which a winding shaft is rotatably held on trunnions. The winding shaft is hollow. Inside, a torsion spring is provided, which is attached at one end to one end of the winding shaft and at its other end to a stationary bearing journal, it being noted that such a bearing journal is also provided at the other end of the box-shaped rail which the winding shaft is mounted. The winding shaft is prestressed in the winding direction by the torsion spring in order to always keep the strand-shaped guide means (designed as a rope) under tension.

However, it has been shown that such torsion springs for the The intended use in question is only suitable to a very limited extent, or at least has considerable handling disadvantages. Because due to the unavoidable considerable friction, considerable (large) forces are required to actuate this known curtain in order to achieve the desired effect of keeping the guide means strands taut in every hanging position.

In addition, it has been found to be disadvantageous in a curtain according to DE-GM 89 09 836 that one has chosen those guide means which are adjacent to the longitudinal edges of the "brake cables" (ie as strand-shaped, flexible guide means) Run curvature (essentially in the middle) between the outer guide means or guide means strands, since - as is readily apparent to the person skilled in the art - it is obviously not expedient, particularly in the case of relatively acute-angled, triangular curtains, with regard to the desired (and necessary) braking effect, when the guiding strands more or less directly adjacent to the longitudinal line of symmetry of the curtain perform the "braking task". In this context it should be added that the two strands of the (middle) guide means forming the "brake cable" are connected at their end sections facing the (stationary) first holding means by a small tension spring which frictionally engages the middle guide means with the curtain or the through openings should hold.

It should also be noted that brake ropes of this type, such as those introduced in DE-GM 89 09 836 as (subjective or supposed) new, had long been known, for example from EP 0 195 483 B1, that is, a document that is based on non-generic folding blinds with four rails, in which the strand-shaped guide means are in frictional engagement with the respective holding means are, in addition to the holding means of generic curtains in the folding blind according to EP 0 195 483 B1 there is a further holding means and the curtain is arranged between this further holding means and the second holding means.

In order to be able to hold the second holding means and the further (fourth) holding means (between which the curtain is arranged) in the respectively selected (intermediate) opening position (frictionally), the curtain known from EP 0 195 483 B1 (folding blind) the guiding means, which are designed as cords and run between the second holding means and the further (fourth) holding means and are stretched between the second holding means and the further (fourth) holding means, with these two holding means in a frictional engagement.

The present invention is based on the object, the curtain according to DE-GM 89 09 836 while avoiding its and other disadvantages, in particular with regard to the arrangement of the frictional mounting of the second holding means (and thus ultimately the curtain) causing guide means ("friction cables" or the like.) To improve. In addition - with less effort - the handling of the curtain should result in significantly lower (due to friction) resistance forces when handling the curtain due to the type of spring force, while at the same time a very simple (and also unobtrusive) design with a long service life is aimed for.

According to the invention, this object is achieved in that the first guide means is in frictional engagement with the second holding means.

Preferred embodiments of the present invention are in described the subclaims.

Fig. 1

eine seitliche Draufsicht auf einen trapezförmigen erfindungsgemäßen Vorhang (ohne Behang) in geschlossener Stellung;

Fig. 2

den Vorhang gemäß Fig. 1 (ebenfalls ohne Behang) in geöffneter Stellung;

Fig. 3

den Vorhang gemäß Fig. 1 und 2 mit Behang in seiner geöffneten Stellung gemäß Fig. 2;

Fig. 4

den Vorhang gemäß den Fig. 1 bis 3 mit Behang in seiner geschlossenen Stellung gemäß Fig. 1;

Fig. 5

eine Darstellung eines weiteren Ausführungsbeispiels eines (trapezförmigen) Vorhangs mit einer rechtwinklig zum oberen und unteren Behangrand verlaufenden Seitenkante sowie einer im Winkel zum oberen und unteren Behangrand verlaufenden Seitenkante (mit Behang) in einer Darstellung gemäß Fig. 4; und

Fig. 6

den Vorhang gemäß Fig. 5 ohne Behang.

The invention is explained below using exemplary embodiments with reference to a drawing. It shows:

Fig. 1

a side plan view of a trapezoidal curtain according to the invention (without curtain) in the closed position;

Fig. 2

the curtain of Figure 1 (also without curtain) in the open position.

Fig. 3

1 and 2 with curtain in its open position according to FIG. 2;

Fig. 4

the curtain according to Figures 1 to 3 with curtain in its closed position shown in FIG. 1.

Fig. 5

a representation of a further embodiment of a (trapezoidal) curtain with a side edge running at right angles to the upper and lower curtain edge and a side edge (with curtain) running at an angle to the upper and lower curtain edge in a representation according to FIG. 4; and

Fig. 6

5 without curtain.

1 to 4 show a curtain, generally designated 1, for a (not shown) trapezoidal (glass) surface with a geometric shape which essentially corresponds to the shape of the surface to be shaded, if necessary Curtain 2, which has been omitted in FIGS. 1 and 2 for the sake of a better overview, in order to better illustrate the essential features of the curtain 1, and which in FIG. 3 in the open state of the curtain 1 or its curtain 2, as it were Fold package can be seen, which results in the open state according to FIG. 3 in that the accordion-shaped folds of the pleated curtain material lie together like a leporello.

The curtain 2 is held stationary on a first edge 3 by means of a rail 3 'and is fastened to a movable rail 4' on a second edge 4 opposite the first edge 3, which both in the closed curtain position (FIGS. 1, 4) and can also be releasably locked or held (frictionally) in intermediate positions between the closed and open curtain positions.

Adjacent to its side edges (continuous from the first edge 3) is the curtain 2 on a strand-shaped, flexible first guide means 5 in the manner of a tension wire, a cord, a rope or the like. guided, which with two strands 6 and 7, which run as it were "wave-like" through the curtain 2 (see in particular Fig. 4) between the first holding means 3 'and a third rail 15 and through the also as (movable) rail 4' trained second holding means 4 'and is fixed at the upper free ends (at 8) of the strands 5, 6 fixed to the (third) rail 15.

The strands 6, 7 of the strand-shaped, flexible guide means 5 are each pretensioned at their lower end section by an element 9 which generates a restoring force and which holds the first guide means 5 tensioned in each position of the movable rail 4 ', namely that the restoring force generating element 9 in the present embodiment consists of two springs 9, 9, each of which is assigned to a strand 6 or 7 of the first guide means 5.

The springs 9, 9 are tension springs, each with one end with the associated strand-shaped guide means strand 6 or 7 and with its other end (adjacent to the first edge 3 of the curtain 2) with the stationary rail 3 '. or the environment 10 are to be connected.

It can be seen that the first edge 3 of the curtain 2 is arranged or held in the stationary lower rail 3 ', and that the springs 9 are also arranged within this rail 3' (see FIGS. 1, 2). On its side facing the first guide means 5, the rail 3 'each has a through opening 11 for a strand 6 or 7 of the first guide means 5, through which the guide means strand 6 or 7 coming from the movable rail 4' is guided and deflected ( 1, 2), each spring 9 having at its end facing the respective guide means strand 6 or 7 a deflection roller 12 around which the strand 6 or 7 in question leads with its to its fastening point 8 on the third rail 15 Section is led around.

It can be seen that the guide means strands 6 and 7 of the first guide means 5 are "not in the shortest way" through the movable rail 4 'forming the second holding means, but that they enter a through opening 11 after entering the movable rail 4''are each guided from the relevant end section of the rail 4' initially essentially parallel to the rail 4 'to the other end section of the rail 4' and only there from a through opening 11 '' (each after a corresponding deflection) emerge from the movable rail 4 'in order to then - at right angles to the holding means 3', 4 'and 15 - arrive at the relevant fastening point 8 on the third rail 15.

The through openings 11 'and 11' 'are designed in relation to the contour of the first guide means 5 so that they are in frictional engagement with the through openings 11' and 11 '', so that there is an excellent frictional engagement, even after a longer period Operating time of the curtain 1 is retained, namely firstly / first of all due to the friction which arises due to the dimensioning of the through openings 11 ', 11' 'in relation to the diameter of the strands 6, 7 of the first guide means 5, and secondly due to the multiple Redirection that occurs (according to Eytelwein's equation) when wrapping objects because of the wrap angle on the one hand and the coefficient of friction on the other.

Even if there is a certain amount of abrasion at the through openings 11 ', 11' 'due to long-term use, so that the frictional engagement initially present is at least partially lost / worse, the frictional engagement resulting from this looping / deflection still remains that the curtain according to the invention remains functional even after a long period of operation and can be locked in all intermediate positions selected in each case.

At this point, it should be mentioned that the strand-like first guide means 5 can be formed in one piece (and directly spring-loaded), according to one embodiment, whereby it is then, for example, adjacent to the second edge 4 of the curtain 2 via a deflection roller 12 or the like. can be guided to the other side and a further (second) spring arrangement stationary be attached or can be dispensed with.

As has already been indicated above, it is not only expedient if the curtain 2 is arranged on its longer edge in its open position (see FIGS. 2, 3), but also if this longer edge is arranged below.

If the curtain 1 is to be closed from its open position, the movable rail 4 ', to which the upper edge of the curtain 2 is fastened, is pulled up from its lowered position in accordance with the arrow 13. The tension springs 9, 9 relax - as before with constant tightening of the strands 6, 7, which move from their initially angled, vertical arrangement in the open state (FIGS. 2, 3) to their diagonal or oblique arrangement in the closed state (Fig. 1, 4) move.

It can be seen that the upper end sections of the strands 6, 7 run parallel to window bars, support struts etc. in the open state, that is to say they are arranged optically (aesthetically) in a highly satisfactory manner, while in the closed state they run directly adjacent to the side edges of the curtain and this give optimal guidance.

In the embodiment shown in FIGS. 1 to 4 there are two further guide means strands 14, 14 which form a second guide means. The two strands of the second guide means 14 always run essentially vertically, are in the open state (FIGS. 2, 3) immediately adjacent to the then vertical upper end sections of the strands 6, 7, so that a viewer there optically essentially only two strands perceives and are connected at their end sections facing the first holding means 3 'to a (second) tension spring 16.

This basic concept also applies to the exemplary embodiment according to FIGS. 5 and 6, which shows a curtain 1 with a curtain 2, the geometric configuration of which differs from the curtain 2 according to the exemplary embodiment according to FIGS. 1 to 4; 5, 6 is a side plan view of a curtain 1 in the closed state, or the like while adapting to the window to be covered. on its left side has a side edge running at right angles to the first holding means 3 'and on its right side an oblique side edge. The basic construction also corresponds to the construction described above with reference to FIGS. 1 to 4 and differs (insignificantly) only in that the two stationary guide means strands 14, 14 do not run essentially centrally to the curtain 2, but rather to the edge are offset. Otherwise, the exemplary embodiment according to FIGS. 5 and 6 is provided with the same reference numerals as the exemplary embodiment according to FIGS. 1 to 4.

Reference symbol list

1

curtain

2nd

Curtain

3rd

first edge (of 2) 3 'rail (stationary)

4th

second edge (of 2) 4 'rail (movable)

5 (first)

Leadership resources

6

Strand (of 5)

7

Strand (of 5)

8th

Attachment points (from 5 or 6, 7)

9 (first)

feather

10th

Surroundings (of 1)

11, 11 ', 11' '

Through opening

12

Pulley

13

arrow

14

Guide strands

15 (third)

rail

16 (second)

feather

Claims (12)

Curtain for a (glass) surface to be shaded, in particular a non-rectangular surface, with a curtain corresponding in shape essentially to the shape of the (glass) surface, which at its first edge is connected to a first holding means in the Kind of a fixed rail or the like. To be held, on a second edge substantially opposite the first edge on a second holding means in the manner of a movable rail or the like. is attached which (at least) in the closed curtain position is to be held releasably in position, and the like on a first strand-shaped, flexible guide means in the manner of a cord, a tensioning wire, a rope or the like. is guided, or the like between the first holding means and a fixed third rail. runs through the movable second holding means, as well as on a further strand-shaped, flexible guide means, a first guide means, which is pretensioned by a (first) spring and which is to be held tensioned by the (first) spring in each position of the movable second holding means (with its strands) adjacent to the longitudinal edges of the curtain, and the second guide means, which is pretensioned by a second spring, runs between the strands of the first guide means and the strands of a guide means which are in frictional engagement with the second holding means intersect in the region of the second holding means and from one end section to the other end section, from which they or the like to the third rail. run, characterized in that the first guide means (5 = 6, 7) is in frictional engagement with the second holding means (4 '). Curtain according to Claim 1, characterized in that the first spring (9) which interacts with the first guide means (5) is (at least) a tension spring which has one end connected to a strand (6 or 7) of the first guide means (5) connected and held stationary at its other end. Curtain according to claim 1 or 2, characterized in that the first spring (s) (9) is (are) arranged within the stationary first holding means (3 ') holding the first edge (3) of the curtain (2). . Curtain according to claim 3, characterized in that the stationary second holding means (3 ') on its side facing the first guide means (5) each has a passage opening (11) for the strands of the first guide means (5) through which the movable one second holding means (4 ') coming guide means strands (6, 7) are passed through; and that the spring (s) (9) has a deflection roller (12) or the like at its end (s) facing the guide means (5). has (have) around which the strand-shaped guide means (5) is led with its section (s) leading to its attachment point (8). Curtain according to one or more of the preceding claims, characterized in that the first guide means (5) is formed in one piece, its one strand being adjacent to the second strand (4) of the curtain (2) via at least one deflection roller or the like. is led to the second strand, the free end of which is fixed in place. Curtain according to one or more of claims 1 to 4, characterized in that the first guide means (5) is (at least) formed in two parts, each strand (6, 7) being acted upon by a separate spring (9, 9), and that the other end of each strand (6 or 7) is fixed adjacent to the second edge (4) of the curtain (2). Curtain according to one or more of the preceding claims, characterized in that the second spring (16) is a tension spring. Curtain according to Claim 7, characterized in that the second spring (16) is fastened to the end sections of the strands of the second holding means (14) facing the first holding means (3 '). Curtain according to claim 7 or 8, characterized in that the second spring (16) is arranged in / immediately adjacent to the first holding means (3 '); and that the section of the first holding means (3 ') facing the curtain (2) in the region of the strands (14, 14) of the second guide means (14) is designed such that the second spring (16) always the second guide means (14) holds in frictional engagement with the curtain (2) or its through openings. Curtain according to one or more of the preceding claims, characterized in that the curtain (2) is arranged on its longer edge in its open position. Curtain according to claim 10, characterized in that with a substantially previously known arrangement of the curtain, the longer edge of the curtain (2) is arranged at the bottom. Curtain according to one or more of the preceding claims, characterized in that the strands (6, 7) of the first guide means (5) each - running adjacent to a longitudinal edge of the curtain (2) - from the first holding means (3 ') to the second holding means (4 ') guided, there under frictional engagement with the relevant passage opening (11) substantially parallel to the second holding means (4') to the other end portion thereof, and there under frictional engagement with the relevant passage opening (11) to the third rail or the like . are led.

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