EP3211171A1 - Partition curtain for sport halls or the like and hall, such as a sports hall - Google Patents

Abstract

The invention relates to a separation curtain (1) for sports halls, multipurpose halls, event and exhibition halls, industrial halls, halls or the like, wherein the separation curtain (1) has two outer surfaces (12), each with a surface extension having curtain tracks (3, 4) formed facing each other inner surfaces, wherein the curtain tracks (3,4) are aufraffbar from a lowered state to a raised state. In order to allow especially good sound absorption and sound absorption values in such a curtain, the invention proposes that a curtain track (3, 4) with respect to its inner and outer surfaces (12) in the lowered state in a cross section perpendicular to the surface extension of a curtain track (12). 3, 4) includes an acute angle (±, 2) with a vertical (V).

Description

Field of engineering

The invention initially relates to a curtain for sports halls, multi-purpose halls, event halls, industrial halls, halls or the like, wherein the curtain has two outer surfaces, which are formed by each having a surface extension curtain tracks with facing inner surfaces, the curtain tracks of a lowered Condition are aufraffbar in a raised state.

The invention further relates to a hall such as a sports hall or the like, wherein the hall can be divided by means of two or more curtains, wherein further the curtains each have two outer surfaces, which are formed by a surface extension having curtain tracks and aufraffbar from a lowered state to a raised state are, in addition, which limit each other in the lowered state curtain tracks of two curtains delimiting a subspace formed thereby the hall.

State of the art

Curtains of the type in question are known. These serve, for example, the separation of large areas, such as so-called three-compartment sports halls in several, for example. Two or three areas smaller areas. Known curtains consist of at least two in the discharged state horizontally spaced-apart curtain tracks, which have mutually facing inner surfaces and mutually repellent outer surfaces. The curtain tracks may be attached to a curtain carrier, wherein but the curtain support means may also have two or more winding shafts.

For physical education at schools, as well as for the practice sessions of sports clubs using the sports halls, a good speech intelligibility in the divided by curtains part of a sports hall is of vital and indispensable importance. The DIN 18032, halls for gymnastics, games and multi-purpose use, therefore dictates that curtains have to contribute to the sound absorption of the hall parts. For the sound insulation of curtains, the same DIN stipulates 22dB (A) values. However, the acoustical conditions in a sports hall are, in addition to the sound insulation between the hall parts separated by separating curtains, influenced quite substantially by the duration of the reverberation times or the echo effect within the individual separated hall parts.

There are different technical solutions known with which the reverberation times can be shortened.

For curtains it is from the DE 198 10 597 A1 it is known to arrange a further, provided with holes curtain web in front of a curtain, with there is a gap between the two curtain tracks. The holes arranged in the curtain track serve to reduce the reverberation effect caused by sound reflection on the curtain track, since a large part of the sound passes through the holes and is not reflected on the curtain track. The second, lying behind the perforated curtain rail curtain track is then to prevent a transfer of sound to the other side of the curtain, in the adjacent room inside. By additional sound insulating inserts, eg. Textile fabric, the sound insulation can be improved. A sound insulation of more than 12 to 14 dB is achieved by the curtains shown there, however, only if for the curtain tracks, especially for the continuous rear curtain tracks, a particularly heavy plastic or plastic material or glass material is used.

As a result, these known curtains are quite difficult and very expensive materials. In addition, in this solution only one wall surface of the curtain has a sound-absorbing effect; the non-perforated second wall surface is furthermore sound-reflecting with correspondingly high reverberation times in the adjacent part of the hall partitioned off by the separating curtain.

A second technical solution is from the EP 1174 063 A1 known. One or both panels, or the curtain panels that make up the panels, are coated outwardly with a nonwoven or other sound absorbing material that is firmly bonded to the surface of the curtain panel and is applied for cost reasons in the curtain sheet manufacturing process. This technical solution is intended to achieve both the sound insulation of 22 dB (A) required by DIN and the equally required sound absorption.

In the production of the curtain webs, for example on an extruder or a calender, both the nonwoven web and the initially liquid plastic material pass under high pressure through a number of rollers. Due to this pressure, for example, a 2 mm thick nonwoven web, which is soft, open, porous and thereby sound-absorbing before passing through the rollers, compressed to a thickness of, for example, 1 mm. The surface of the web which was soft, open and porous before passing through the rolls is considerably smoother and more closed after the production process. The sound absorption of the nonwoven web is thereby drastically reduced.

Summary of the invention

Based on the described prior art, the invention initially has the task of specifying a curtain of the type in question, which leads in particular to particularly good sound insulation or sound absorption values.

A possible solution to the problem is given according to a first idea of the invention in a curtain in which it is intended that a curtain web with respect to its inner and outer surface in the lowered state in a cross-section perpendicular to the surface extension of a curtain web forms an acute angle with a vertical ,

If a sound event with certain acoustic characteristics (for example played back via loudspeakers, musical instruments or voice) is "switched off" at an initial time, this sound event can still be measured and audible even after it has been switched off. This decay of the sound event is referred to as the reverberation time, the period in which the sound pressure level of the sound event drops by 60 dB (reduction to 1/1000) as the reverberation time. The "shutdown" of the original sound event is only to clarify the context. Even continuous sound events are able to stimulate the reverberation in a room.

The reverberation time of a room is directly dependent on the volume of the room and the number and characteristics of the sound absorbing surfaces.

According to the ideas of geometric acoustics, the reverberation of a room comes about as a result of the fact that the sound at the room boundary surfaces is thrown back again and again. The large number of incoming reflections thus forms the reverberation. As far as few sound-absorbing room boundary surfaces are present, the number of reflections and thus the corresponding reverberation time increases.

A special case is represented by the so-called flutter echoes, which result when non-absorbent, parallel space-bounding surfaces are present. These Flatterechos lead by multiple reflection with low energy loss at the reverberant reflection surface to longer reverberation times. If the parallelism of the reflection surfaces is canceled out by full or partial obliquity, as proposed according to the invention, this circumstance contributes to the reduction of the reverberation times.

Curtains are such perpendicular and rectangular surfaces that provide an ideal condition for the multiple reflection of sound waves, especially in the middle thirds of so-called three-compartment sports halls on both sides by curtains made of synthetic leather, plastic film, fleece, textile fabric o. The like. be limited. However, not only in the middle third, also in the outer hall parts of three-compartment sports halls as well as in all two-compartment sports halls with one-sided Trennvorhangfläche, the sound from the vertically arranged outer walls is also reflected, which only by consuming sound-absorbing measures on the Exterior walls can be restricted.

Due to the proposed embodiment of the curtain track this is not as usual in a cross-section elongated straight running arranged, but rather obliquely to a vertical or to a Vertical plane. As a result, the sound waves can no longer impinge on a straight path on the opposite surface, possibly arranged in the vertical plane, in order to be reflected from there several times, as explained. Rather, the sound waves are deflected at an angle up or down.

If the opposite separating curtain also has an areal extension at an acute angle to the vertical with respect to the facing curtain runway, the echo or flutter echo effect arising in the known curtains extending within vertical planes does not come into play or is largely limited.

In order to further improve a hall of the type in question in particular sound-absorbing or sound absorption technology, it is proposed that mutually facing curtain tracks both curtains in terms of their inner and outer surfaces in the lowered state in a cross-section perpendicular to the surface extension of a curtain track a sharp first angle with a vertical and at this angle extend to an end region of the respective separation curtain which has a maximum or minimum width, or extend to a turning region in which an outer surface merges into a second vertical angle enclosed acute angle.

The inner and outer surfaces of a curtain web extend with respect to a common curtain track section in a preferred embodiment at the same acute angle to a vertical. It is also possible for the inner and outer surfaces of the curtain track to run parallel to each other in this acute-angled region.

Further features of the invention are described below, also in the description of the figures, often in their preferred assignment to the claim concepts already explained above, but they can also be assigned to only one or more individual features, as described here, in particular the claims already dealt with , or independently or in another overall concept of importance. It is also possible to combine the measures of the claims already dealt with.

The inclination of a curtain track can be given, for example, starting from the bottom of the curtain to the ceiling-side suspension area. Usually, such curtains are in the spacing direction of the curtain tracks of a curtain separation between 0.20 and 0.40 m wide. Leaving such a width in the ceiling area, a width of the curtain can result in the bottom area, which is much larger compared to the width in the ceiling area. This can lead to problems with given pitch sizes and floor markings on the hall floor. It may possibly result in a width in the bottom area of 1.50 to 2 m. Such a solution is only partially suitable, as well as a corresponding broadening of the curtain in the ceiling area to 1.50 or 2 m with remaining usual width of 0.20 to 0.40 m in the floor area.

Rather, it is preferred that the outer surface includes different acute angles with the vertical over its height. These different acute angles, as well as preferred, may be chosen to be positive and negative with respect to a transverse plane aligned perpendicular to the vertical plane. Also, the acute angle of an outer surface may be selected dimensionally different, so on, in particular each in a range of about 1 to 30 °, more preferably about 5 to 15 °.

Both outer surfaces may include different acute angle with the vertical over their height, both outer surfaces may be designed the same with respect to the acute angle.

Also, the outer surface may include two acute angles with the vertical.

The shut-down curtains, which are usually between 0.20 and 0.40 m wide in the ceiling area and on the floor, can be widened, for example, at a height between 3 and 4 m above the hall floor. This results in a broadening of the separation curtain according to corresponding greater spacing of the relevant curtain tracks transverse to the vertical extent of the same. From this broadening, the curtain track sections extend downwardly and upwardly at an acute angle to a vertical plane. Correspondingly, each curtain track extends from this extension area at an acute first angle to an end area, for example a ceiling area, and in the opposite direction, including a second acute angle to the other end area, for example the floor area. The end regions preferably have the smallest widths, in particular smaller widths than the separation curtain in the region of the extension.

Starting from the extension region, the width of the separation curtain in the direction of the end regions preferably decreases successively.

In the extension region results in the course of the curtain path between the ceiling and floor area a turning area in which an outer surface - but preferably also the inner surface - from a first region which includes a first acute angle with the vertical, in a second region with a second sharp angle passes.

The result is preferably a roof-like design of the curtain web with a in use state, i. in the lowered state, preferably horizontally extending ridge line, from which extend downwards and upwards curtain track sections roof area like.

The spreading of the curtain tracks results in a widening compared to the width in the floor or ceiling area to a level which corresponds to 1.5 to 5 times the width of the curtain in the floor and / or ceiling area. Thus, a spreading of the curtain tracks on, for example, 0.8 m, 1 m or 1.2 m may be given.

In order to make the inclination of the curtain track areas different for the purpose of greater reduction of the echo effect, the spreading of the curtain tracks can be provided at two opposite arranged curtains (eg for the separation of a central hall section in a three-compartment sports hall) in different vertical heights. For example, there may be a spread in the area of one curtain at a height of 3 m and at the opposite curtain at a height of 4 m.

The spreading as such can be done in different ways. Thus, a pneumatic spreading can be given by one or more airbags are inflated in the relevant altitude to cause the spread. It is advantageous in this case to carry out the spreading only when the separation curtain is in itself in a completely lowered position. It also appears expedient first to empty the air cushion or pillows, for example, by a pump, and only then to initiate the usual snatching the curtain.

But it is also possible to achieve the spread mechanically, for example. Electromechanically, moreover, via a pneumatically or hydraulically operated mechanism. For example, it is possible to provide a lever linkage extending transversely to the longitudinal extent, which moves, for example, by weight, even when lowering the separating curtain into an expanded position.

The partition curtain is preferred in terms of space in the area of the hall floor and the hall ceiling not wider than conventional, known curtains. Due to the spreading of the curtain tracks at a height of several meters above the hall floor, the use of the hall or sports operation is in no way impaired. In addition, such a separation curtain, as can be dispensed with high-quality and expensive clothing materials with sound-absorbing surfaces, low cost.

With regard to the disclosure, the ranges and / or ranges of values or multiple ranges given above also include all intermediate values, in particular in 1/10 increments of the respective dimension, if appropriate also without dimension. For example. the indication 1 to 30 ° also includes the disclosure of 1, 1 to 30 °, 1 to 29.9 °, 1.1 to 29.9 °, etc., the disclosure of 0.2 to 0.4 m also the Revelation of 0.21 to 0.4 m, 0.2 to 0.39 m, 0.21 to 0.39 m, etc. This disclosure may on the one hand to delimit a said range boundary from below and / or above, but alternatively or additionally serve to disclose one or more singular values from a given range.

Brief description of the drawings

Fig. 1

in schematischer Darstellung einen Trennvorhang in einer Querschnittdarstellung, den herabgelassenen und nicht gespreizten Zustand betreffend;

Fig. 2

eine der Figur 1 entsprechende Darstellung, bei einer Spreizung der Vorhangbahnen des Trennvorhanges etwa auf halber Höhenerstreckung des Trennvorhanges;

Fig. 3

eine der Figur 2 entsprechende Darstellung, jedoch bei einer Spreizung etwa in einem oberen Drittel des Trennvorhanges;

Fig. 4

in schematischer Darstellung eine Draufsicht auf eine Halle, bspw. Sporthalle, die unter Nutzung von zwei Trennvorhängen in drei Teilbereiche unterteilt ist;

Fig. 5

den schematischen Schnitt gemäß der Linie V-V in Figur 4, betreffend die Nutzung von Trennvorhängen gemäß den Darstellungen in den Figuren 2 und 3;

Fig. 6

eine weitere der Figur 2 entsprechende Darstellung, bei einer Spreizung der Vorhangbahnen im deckennahen Endbereich;

Fig. 7

eine der Figur 2 entsprechende Darstellung, eine erste Ausführungsform der Aufspreizmechanik betreffend;

Fig. 8

eine der Figur 7 entsprechende Darstellung, eine zweite Ausführungsform betreffend;

Fig. 9

eine dritte Ausführungsform in einer Darstellung gemäß Figur 7;

Fig. 10

in weiterer Ausführungsform eine Spreizmechanik des Trennvorhanges;

Fig. 11

den schematischen Schnitt gemäß der Linie XI-XI in Figur 10;

Fig. 12

eine der Figur 11 entsprechende Schnittdarstellung, jedoch die nicht gespreizte Stellung des Trennvorhanges betreffend;

Fig. 13

eine der Figur 10 entsprechende schematische Darstellung des Trennvorhanges, betreffend eine weitere Ausführungsform der Spreizmechanik;

Fig. 14

den schematischen Schnitt gemäß der Linie XIV-XIV in Figur 13;

Fig. 15

eine weitere schematische Querschnittdarstellung durch einen Trennvorhang, betreffend eine Ausführungsform einer Aufspreizmechanik;

Fig. 16

eine der Figur 15 im Wesentlichen entsprechende Darstellung, betreffend eine Aufspreizmechanik unter Nutzung von Luftkissen;

Fig. 17

eine der Figur 16 entsprechende Darstellung, eine weitere Ausführungsform betreffend.

The invention is explained below with reference to the accompanying drawing, which illustrates only exemplary embodiments. A part that is explained only with reference to one of the embodiments, and in another Embodiment is not replaced by another feature due to the particularity highlighted there, is thus described for this further embodiment as any possible existing part. On the drawing shows:

Fig. 1

a schematic representation of a separation curtain in a cross-sectional view concerning the lowered and not spread state;

Fig. 2

one of the FIG. 1 corresponding representation, at a spread of the curtain tracks of the curtain separation about half the vertical extent of the curtain separation;

Fig. 3

one of the FIG. 2 corresponding representation, but with a spread about in an upper third of the curtain separation;

Fig. 4

in a schematic representation of a plan view of a hall, eg. Sports hall, which is divided into three sections using two curtains;

Fig. 5

the schematic section along the line VV in FIG. 4 on the use of curtains according to the illustrations in FIGS. 2 and 3 ;

Fig. 6

another one FIG. 2 corresponding representation, with a spread of the curtain tracks in the ceiling-near end region;

Fig. 7

one of the FIG. 2 corresponding representation concerning a first embodiment of the spreading mechanism;

Fig. 8

one of the FIG. 7 corresponding representation concerning a second embodiment;

Fig. 9

a third embodiment in a representation according to FIG. 7 ;

Fig. 10

in another embodiment, a spreading mechanism of the separation curtain;

Fig. 11

the schematic section along the line XI-XI in FIG. 10 ;

Fig. 12

one of the FIG. 11 corresponding sectional view, but concerning the non-spread position of the curtain separation;

Fig. 13

one of the FIG. 10 corresponding schematic representation of the separation curtain, concerning a further embodiment of the spreading mechanism;

Fig. 14

the schematic section according to the line XIV-XIV in FIG. 13 ;

Fig. 15

a further schematic cross-sectional view through a separation curtain, relating to an embodiment of a spreading mechanism;

Fig. 16

one of the FIG. 15 essentially corresponding representation, relating to a spreading mechanism using air cushion;

Fig. 17

one of the FIG. 16 corresponding representation concerning a further embodiment.

Description of the embodiments

Shown and described, first with reference to the Figures 1 and 2 , a curtain 1, as this example, in halls 2, in particular sports halls or similar areas, can be used. Hereby areas of hall 2 or the like can be separated and largely avoided that noises are transmitted from one side of the hall area to the other.

The curtain 1 consists in the illustrated embodiments of two as wall surfaces to be designated curtain tracks 3 and 4. The curtain 1 extends in the drained installation state, as this example. In FIG. 1 is shown substantially vertically.

The curtain tracks 3 and 4 may, according to the illustrated embodiments, be connected to one another at the bottom via a connecting region. This connection can also be made via each attached to the inner surfaces of the curtain tracks 3 and 4 cross connector 5. These cross connectors 5 serve as horizontal traction means.

As shown, a tie-bar 7 may be provided in the region of the end facing the hall floor 6 in the lowered state of the curtain 1. Such a Raffschiene 7 extends in a preferred embodiment over the entire longitudinal extension of the curtain 1 (in accordance with extension in the direction perpendicular to the plane with respect FIG. 1 ) and preferably acts on the underside of the connecting region between the curtain tracks 3 and 4.

The Raffschiene 7 is attached to a tieback 8. This serves as a vertical traction means and penetrates in the lowered state, the curtain 1 approximately centrally between the curtain tracks 3 and 4. The gathering line 8 is the end, i. mounted on the ceiling side on a preferably motor, in particular electric motor driven take-up shaft 9.

The cross connectors 5 are guided on the gathering cord 8 and / or attached thereto.

By means of the motor device can be on the connecting means or traction means, in particular the tieback 8, acted. Thus, the curtain 1 can be pulled under gathering of the curtain tracks 3 and 4 up under the hall ceiling 10 or be discharged from here in the direction of the hall floor 6.

The curtain tracks 3 and 4 may be divided into transverse to the vertical extension web segments, which may be connected to each other via seams. In the area of these seams, the cross connectors 5 can then be fastened on the inside surface side. In a further embodiment, the web segments can also be riveted, screwed, clamped, pressed or glued, if necessary, in the arrangement of profiles or strips.

The curtain 1 or the curtain tracks 3 and 4 are preferably attached to the hall ceiling 10 via support means 11. The considered in the use state horizontal distance of the support means 11 are essentially the minimum width a of the curtain 1 in the ceiling area before, as preferably also the width a substantially corresponding width a 'in the bottom end portion of the curtain.

The width a or a 'of the curtain 1 in the cover-side and / or bottom end region is about 0.2 to 0.4 m.

FIG. 1 schematically shows such a curtain 1 in the lowered position. In this lowered, as described below, but not the use position at the same time forming unfolding position of the curtain 1, the curtain tracks 3 and 4 extend with respect to a cross section perpendicular to the surface extension of each curtain track almost parallel to each other (see. FIG. 1 ).

In order to achieve in particular a reduction of the reverberation times in hall areas separated by such curtains 1, a partial spreading of the curtain tracks 3 and 4 in a direction transverse to the vertical longitudinal extent is provided. Such a spread, as can be seen, for example, in FIGS. 2 and 3, can be carried out automatically in the course of the lowering or after the lowering of the separating curtain 1, but alternatively also only on demand, i. by appropriately volitional triggering.

The spread of the curtain tracks 3 and 4, ie the increase in their spacing from each other and thus the increase in the width b of the curtain 1 in the spread area, is preferably carried out in a hall floor 6 from considered height, not the game and sports in the hall 2 impaired. Such is how, for example, in FIG. 2 to recognize a with respect to the vertical height extent of the curtain 1 central spreading or even, such as in FIG. 3 to recognize a spread of the curtain tracks 3 and 4 in the vertically upper third of the curtain separation. 1

Starting from the spread area, the sections of the curtain tracks 3 and 4 run in the direction of the two ends (bottom-side and ceiling-side end) with respect to a cross-section according to FIG. 2 at an acute angle α or β to a vertical V.

In preferably equal widths a and a 'in the ceiling and floor area of the curtain 1 results in a central spread of the curtain runs 3 and 4 as shown in FIG FIG. 2 same acute angle α and β. In an off-center spreading, as this example. In FIG. 3 is shown, arise unequal acute angle α and β. Thus, in the illustrated embodiment, the angle α is greater than the angle β.

The acute angle α or β may be about 5 to 15 or 20 ° in a preferred embodiment. The maximum width b of the separating curtain 1 in the region of the spreading corresponds approximately to 2 to 3 times the smallest width a or a ', so on, for example, about 1 m.

The two dividing curtains 1 used in a hall 2 when separated into three hall areas can be designed the same with respect to the mutually facing outer surfaces 12 in the central hall area with respect to the height-wise formation of the spread of their curtain tracks 3 and 4. It can, however, as well as in FIG. 5 shown, spreads of the curtain tracks 3 and 4 be given at different heights, so for example. In a curtain 1 at half vertical height and the other curtain 1 in the region of the upper third. Accordingly, there are no parallel surfaces of the mutually facing outer surfaces 12 of the curtains 1 opposite, which further contributes to reducing the reverberation time.

In an alternative embodiment, as in FIG. 6 shown schematically, the curtain 1 be spread in the region of its ceiling-side end, so that at least approximately a continuous width extension starting from the bottom end portion can be given to the ceiling-side end portion of the curtain tracks 3 and 4. The largest width b of the curtain 1 is given in this case in the area of the ceiling-side support means 11.

Again, as in the above-described embodiment, no outer surface 12 of the curtain 1 is provided, which extends in a vertical plane. Accordingly, such a curtain 1 also nachhallreduzierend in conjunction with this curtain opposite building wall act.

In a preferred embodiment, as indicated, the spreading only takes place when the curtain 1 is completely lowered. It is further preferred that the separation curtain 1 be raised and shirred before the spread is reduced, preferably in an orientation of the curtain 1 as shown in FIG FIG. 1 ,

The FIGS. 7 to 16 show different embodiments for the realization of a targeted spreading of the curtain tracks 3 and 4.

Thus, as shown in FIG. 7 be provided in the desired Aufspreizungsbereich an air cushion 13. This is, for example, connected to the adjacent cross connector 5. As a result of expansion of the air cushion 13, spreading of the curtain tracks 3 and 4 in the relevant area is achieved.

It is also possible to provide two air cushions 13, which are positioned substantially in a horizontal juxtaposition in the use state, as shown in FIG FIG. 8 and beyond in FIG. 16 is shown schematically. Via a guided between the curtain tracks 3 and 4 to the air bag 13 line 14, for example. Hose line, air is pumped in particular after fully lowered curtain 1 air into the air bag 13, according to which they expand and bias the curtain tracks 3 and 4 in the region of their inner surfaces ,

About the same lines 14 can be done before lifting the curtain 1, a Saugentleerung the air cushion 13.

Also, as shown schematically in FIG. 9 shown, three, four or more cushions, each smaller size, be provided.

In addition, the spread can also be achieved by electrical, pneumatic or hydraulic means, this further example. Using this actuatable expansion levers 15. These spreaders can be made of a as in FIG. 12 illustrated pivoting position, in which these lie between the cross-section substantially parallel to each other extending curtain tracks 3 and 4, according to electrical actuation and / or pneumatic or hydraulic action according to a pivoting set up, the free ends of the expansion lever 15, the inner surface of the curtain tracks. 3 and 4 acting on this in the spread position according to FIG. 11 spend.

For this purpose, in particular of the hall ceiling 10 forth between the curtain tracks 3 and 4, a supply line, not shown, may be performed up to the expansion levers 15.

In the spread position according to FIG. 1 extend the expansion lever 15 at least approximately rectified to the cross connectors. 5

Also, according to the representations in the FIGS. 13 to 15 be given a purely mechanical solution for spreading the curtain runs 3 and 4. Thus, a lever linkage 16 may be provided. The lever linkage 16 has two spreading cross-sectionally arranged and pivotable about a common pivot axis 18 spreading lever 15, which are biased by a spring 17 in a the inner surfaces of the curtain tracks 3 and 4 preferably not acting on basic position.

The pivot axis 18 of a possible mechanical solution according to FIG. 15 can be fixed, for example. Ceiling side, be attached.

The spring 17 is disposed between the protruding beyond the pivot axis 18, the loading peaks for the curtain tracks 3 and 4 facing away from the ends. Pull cords 19 continue at these ends, which other ends are connected to the Raffschiene 7.

The length of the pull cords 19 is adapted to the vertical extension length of the separation curtain 1 in the lowered position.

In the course of lowering, as well as the lifting of the separation curtain 1, the pull cords 19 are unstressed according to their given length. The spring 17 loads the expansion lever 15 in an in FIG. 15 shown in phantom basic position in which the inner surfaces of the curtain tracks 3 and 4 are not acted upon or at least not spread.

Only with preferred complete lowering of the curtain 1 in the predetermined Absenkstellung a tightening of the pull cords 19 and this against the force of the spring 17 is a Aufschwenkung the spreader 15, which under appropriate action on the inner surfaces of the curtain runs 3 and 4, the spreading of the same provides. The largest width b of the curtain 1 is preferably obtained in the Spreizhebelbeaufschlagung.

Also, according to the schematic representation in FIG FIG. 17 the respective free, the inner surface of the curtain track 3 and 4 facing away from an expansion lever 15 can be acted upon via an actuator 20. The actuator 20 may be a hydraulically, pneumatically or electrically controllable Hubstangenausbildung.

The above explanations serve to explain the inventions as a whole, which further develop the state of the art independently, at least by the following feature combinations, namely:

A curtain characterized in that a curtain sheet 3, 4 has an acute angle α, β with a vertical V with respect to its inner and outer surfaces 12 in the lowered condition in a cross section perpendicular to the surface extension of a curtain sheet 3, 4.

A separation curtain characterized in that the outer surface 12 includes different acute angles α, β with the vertical V over its height.

A separation curtain, which is characterized in that both outer surfaces 12 include over their height different acute angle α, β with the vertical V.

A separation curtain characterized in that the outer surfaces 12 enclose two acute angles α, β with the vertical V.

A hall which is characterized in that mutually facing curtain tracks 3, 4 of both curtains 1 with respect to their inner and outer surfaces 12 in the lowered state in a cross section perpendicular to the surface extension of a curtain track 3, 4 a sharp first angle α with a vertical V and extend at this angle α up to an end region of the respective separating curtain 1 which has a greatest b or minimum width a, a ', or extend to a turning region in which an outer surface 12 is enclosed in a second vertical V acute angle β passes.

All disclosed features are essential to the invention (individually, but also in combination with one another). The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize with their features independent inventive developments of the prior art, in particular to make on the basis of these claims divisional applications. <b> List of Reference Numbers </ b> 1 curtain a width 2 Hall a ' width 3 curtain rail b width 4 curtain rail 5 cross-connector 6 shop floor V vertical 7 Raffschiene 8th Raffschnur 9 winding shaft α angle 10 hall ceiling β width 11 support means 12 outer surface 13 air cushion 14 management 15 spreading lever 16 lever linkage 17 feather 18 swivel axis 19 drawstring 20 actuator

Claims (6)

Separating curtain (1) for sports halls, multipurpose halls, event and exhibition halls, industrial halls, halls or the like, wherein the separation curtain (1) has two outer surfaces (12), each having a surface extension having curtain tracks (3, 4) facing each other with inner surfaces wherein the curtain sheets (3, 4) are elevatable from a lowered state to a raised state, characterized in that a curtain sheet (3, 4) is rectangular in cross-section with respect to its inner and outer surfaces (12) in the lowered state to the surface extent of a curtain web (3, 4) includes an acute angle (α, β) with a vertical (V). Separating curtain according to claim 1, characterized in that the outer surface (12) includes over its height different acute angle (α, β) with the vertical (V). Separating curtain according to one of the preceding claims, characterized in that both outer surfaces (12) include over their height different acute angles (α, β) with the vertical (V). Curtain according to one of the preceding claims, characterized in that the outer surfaces (12) include two acute angles (α, β) with the vertical (V). Hall (2) as a sports hall or the like, wherein the hall (2) by means of two or more curtains (1) is subdivided, further wherein the curtains (1) each have two outer surfaces (12), which by a surface extension having curtain tracks (3 , 4) are formed and are aufraffbar from a lowered state to a raised state, wherein moreover the opposite each other in the lowered state curtain tracks (3, 4) of two curtains (1) define a subspace formed thereby the hall (2), characterized in that mutually facing curtain tracks (3, 4) of both curtains (1) with respect to their inner and outer surfaces (12) in the lowered state in a cross-section perpendicular to the surface extension of a curtain track (3, 4) an acute first angle (α) with a vertical (V) and extend at this angle (α) as far as an end region of the respective separation curtain (1) which has a maximum (b) or minimum width (a, a ') or to a turning region in which an outer surface ( 12) into a second with the vertical (V) enclosed acute angle (β) passes. Curtain or hall, characterized by one or more of the characterizing features of one of the preceding claims.

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