EP0363454B1 - Covering for masking an opening - Google Patents

Abstract

A divided flexible covering (1, 2) serves to expose any desired region of a surface or opening while masking the other regions. Two gripping slats (3, 10) are located respectively at the beginning of a length of fabric (1 or 2) or at the beginning and end of at least one or two strips (4 or 8), each of which is guided endlessly over four rollers (5, 9) or sliding blocks (47). Each length of fabric (1 or 2) is provided with an end piece (7 or 12). The length of the lengths of fabric (1 or 2) is approximately half that of the strips (4 or 8). The end pieces (7, 12) are mutually offset and are provided with a slot (14a) or are attached to a rod (43) provided for the other length of fabric, so that when a covering part (1), for example, is pulled down over the centre of the cupboard, the covering part (2) is pulled simultaneoulsy because one end piece (7) entrains another end piece (12) upward in the direction of traction. The operations are identical in the opposite direction. The gripping slats (3 and 10) and the end pieces (7 and 12) for unattached strips (4 and 8) have slits which ensure frictionless sliding.

Description

The invention relates to a covering for covering an opening or covering a surface with a sheet of flexible material according to the preamble of claim 1.

As with well-known roller shutter systems, however, there is the disadvantage that the removal of objects from certain parts of the cabinet element - e.g. from those that are accommodated in the area that faces away from the edge of the covering delimiting the opening - is inevitably associated with a complete opening of the covering. However, this is often not desirable because e.g. takes more time than e.g. opening a cabinet door attached to hinges, which at the same time releases all areas of the cabinet. This is irrespective of whether the roller shutter is operated by hand or by an electric motor, as described in the aforementioned DE-OS.

An aim of the invention is therefore a partial opening of the fabric.

Coverings in the form of tapestries, e.g. Tapestries, but also curtains are known which can be pulled up or lowered by means of tapes guided by rollers.

Such fabrics are e.g. for cabinet elements or their front coverings are known and are characterized by a small space requirement when opening and a stylistically appealing design. Such a cabinet element is shown in DE-OS 35 31 675.

The known constructions of the front coverings for boxes, for example according to the aforementioned DE-OS, allow the coverings to be partially left open with the effect behind them To display objects in the cabinet element for longer. In the areas described above, however, which face away from the opening-limiting edge of the covering, this is only possible by completely opening the covering. This means that hiding or hiding the other areas is not possible.

The same also applies to curtains or roller blinds that only allow partial opening below their lower edge (or only to the side of the side edge). Did you want e.g. Allowing sunlight to flow into a room through a window opening is only possible with the lower window area being exposed at the same time.

A further object of the invention is therefore to create a covering that allows partial opening or display of areas behind it, regardless of the position of these areas, and without thereby causing a complete opening of the cabinet element or the covering in certain areas must be presented or without the need to present or exempt certain areas from the display.

Split shutters are also known (for example in DE-PSs 211972, 221575 and 549678). These roller shutters allow, for example, a partial display of the cabinet elements closed by them for the central area - ie the area between the two opening-limiting edges of the two roller shutter parts. The above-mentioned disadvantage applies to the areas which are remote from the margins mentioned. In addition, these roller shutters are connected to each other by ropes or chains in such a way that they can only be moved together. Opening the upper roller shutter upwards also automatically opens the lower roller shutter downward; the objectives of the invention can therefore not be fully achieved by such a known construction.

On the other hand, however, the connection of the upper and lower roller shutters is necessary, since in the known constructions it must be prevented that the weight of the roller shutters causes them to open or close automatically.

In addition, divided cabinet elements are also known, in which, in principle, a cabinet element with a roller shutter opening upwards and a cabinet element with a roller shutter opening downwards can be seen - separated from one another. Such designs are somewhat better in the individuality of opening, since the upper roller shutter can be moved independently of the lower roller shutter; in the end, however, they only represent a doubling of a cupboard element according to DE-OS 3531675 (one of them turned upside down), which requires additional material and which nevertheless only partially achieves the objectives of the invention.

On the other hand, all of the objects of the invention are achieved in a surprisingly simple manner by combining the features of the characterizing part of claim 1.

The invention allows an optional opening, closing or partial opening or concealing or exposing any areas behind it, without unintentionally displaying other areas. The following structural elements come into consideration as covering in the sense of the invention: roll-up doors (any flexible material - stretchable or inextensible - is to be understood as material), roller shutters, chain links, flexible photo or picture boards, projection walls, sun blinds, wall claddings, room dividers etc.

Due to the divided, independently movable covering, there is also the possibility of a decorative redesign if the two covering parts are colored differently or have different designs, for example.

Depending on requirements or wishes, the lower or upper covering part can predominate - in extreme cases even take over the exclusive covering. Combinations e.g. of transparent covering parts allows a variety of effects to be achieved by overlapping the covering parts.

The pulling device ensures that the ends of the covering or the covering parts are each parallel, so that, regardless of the current position of the two parts, a linear covering of the covering lying in the direction of movement is retained. A power transmission between the parts of the pulling device on both sides of the covering is so well ensured by the invention that a pull-in shelf attached by hand at which point on the handle strip leads to a safe, uniform rolling up and unrolling of the covering part in question. This is one of the most important effects of the invention, since it ensures that the fabric never cant.

In the subclaims and in the description of the figures, further details and variants of the invention are identified or described in more detail by way of example.

The resulting benefits are listed below:
The design according to claim 2 always ensures a smooth covering, the same regardless of the open state gives a clean impression. The design of the pulling device enables a completely independent pre-tensioning of the covering relative to the pulling device.

The design according to claim 3 guarantees the aforementioned guidance of the covering, while the features of claim 4 allow the interaction of the two covering parts insofar as the complete covering with one covering part automatically leads to the complete retraction of the other covering part.

The features of claim 5 describe a variant in which the covering is rolled up in a simple manner - similar to a roller blind - so that very little force has to be applied when the covering is opened. Under certain circumstances, a known and therefore not described latch mechanism can be provided, which causes an automatic opening - due to the force of the spring - in which, for the purpose of opening, there is a brief jerk in the closing direction and then releasing the covering.

Another advantage of the embodiment according to claim 5 is the reduced space requirement. With this configuration, neither the end of the covering nor the traction device has to be guided into the rear region, for example of a box. In such a case, the pulling device can be limited to the use of 4 rollers (2 at the top and 2 at the bottom), whereas otherwise 8 rollers are usually used (2 at the top, 2 at the rear, 2 at the bottom and 2 at the bottom per cover) . Such a variant is also most likely to be used for room dividers, curtain constructions, etc.

A cost-effective simplification is described by claim 6. Such guide pieces can be bent from sheet metal or, for example, also be made from plastic injection molding.

Claim 7 describes a practical embodiment in which the traction devices are completely covered and, in the case of a design according to claim 5, a suitable brake is provided which is capable of absorbing the force of the spring, so that a covering is in its preselected position despite spring tension remains.

The embodiment according to claim 8 represents a self-regulating prestressing device for the respective covering part. Regardless of the amount of the rolled up covering web as well as regardless of temperature or other external influences, the tension between the roller and the handle strip is always kept constant. This tension can also be adjusted by loosening the covering from the roller, rotating the roller against the force of the spring (in the winding direction of the covering) and then reattaching it to the roller. The prerequisite for the correct functioning of this pretensioning device for the covering is, of course, the freedom of movement of the pulling device. Alternatively, the fastening point of the covering on the traction devices or belts can be varied. It is there e.g. fixed via a grip bar using clamping screws.

The training according to claim 9 will be used in particular in room dividers or wall coverings or window coverings. A maximum of flexibility is guaranteed.

The feature of claim 10 is suitable for use, for example, in cinemas or in audiovisual devices.

• Fig.1 bis 6 verschiedene Stellungen der erfindungsgemässen Bespannung in Ansicht;
• Fig.7 bis 10 Details der Führung der Bespannung;
• Fig.11 und 12 Details von Endstücken und Griffleisten;
• Fig.13 eine Variante mit halber Bandlänge;
• Fig.14 und 15 eine Variante der Endstücke;
• Fig.16 Details einer Rollen- und Walzenführung;
• Fig.17 eine erfindungsgemässe Variante mit rolloartig gelagerten Teilen der Bespannung;
• Fig.18 ein Detail der Variante nach Fig. 17;
• Fig.19 ein Detail der Seitenführung der Griffleisten;
• Fig.20 bis 23 Schnittzeichnungen von verschiedenen Stellungen der Bespannungen entsprechend den Fig. 1 bis 6;
• Fig.24 eine detaillierte Darstellung der Walzen- und Rollenkonstruktion;
• Fig.25 sowie 25a eine detaillierte Darstellung der Griffleistenausführung;
• Fig.26 bis 28 Varianten bzw. Details der Endstücke;
• Fig.29 eine Variante mit zylindersegmentartigen Gleitstük ken;
• Fig.30 sowie 30a eine Variante mit automatischer Vorspanneinrichtung für die Bespannungsteile und
• Fig.31 bis 34 Variationen mit in Rahmen verschiebbaren Bespannungen, stilisiert.

Show in the sketches:

• 1 to 6 different positions of the covering according to the invention in view;
• 7 to 10 details of the guidance of the covering;
• Fig.11 and 12 details of end pieces and handle strips;
• 13 shows a variant with half the length of the tape;
• 14 and 15 a variant of the end pieces;
• Fig. 16 Details of a roller and roller guide;
• 17 shows a variant according to the invention with roller-type parts of the covering;
• 18 shows a detail of the variant according to FIG. 17;
• Fig. 19 shows a detail of the side guide of the handle strips;
• 20 to 23 are sectional drawings of different positions of the coverings corresponding to FIGS. 1 to 6;
• Fig. 24 shows a detailed representation of the roller and roller construction;
• 25 and 25a show a detailed illustration of the handle strip design;
• Fig. 26 to 28 variants or details of the end pieces;
• Fig.29 a variant with cylinder segment-like sliding pieces;
• 30 and 30a show a variant with an automatic pretensioning device for the covering parts and
• Fig. 31 to 34 variations with covers that can be moved in frames, stylized.

The figures are described together; same parts have the same reference numbers; Similar parts have the same reference numbers with different indices.

Although essentially roll-up doors are shown, the invention is not restricted to doors, however, but also includes purely stylistic structural components such as curtains, room dividers, wall coverings, stage sets, Tapestries, advertisements, and possibly also audiovisual aids such as projection surfaces, shields from welding stations or the like.

There are always two covering parts 1, 2 in use, although both parts need not always be visible, as will be explained later. One covering part 1 is to be closed from above, the second (2) from below. However, there are also two laterally running covering parts (one from the left and one from the right) within the scope of the invention. About that
In addition, several front covering parts can also be seen one above the other within the scope of the invention, although for reasons of illustration mostly only one layer is shown.

One task, as shown in FIGS. 1 to 6 and 31 to 34, is to achieve as different design effects or opening positions as possible.

In FIG. 1, for example, the covering parts 1 and 2 are opened to four fifths, in FIG. 2 they are closed, the lower covering part 2 being pulled upward more than part 1 downwards. In FIG. 3, the covering part 1 is pulled down completely and part 2 is therefore no longer visible. In FIG. 4, the covering part 2 is pulled up by about half and the part 1 is pushed slightly upwards. In FIG. 5, both parts are pushed or pulled approximately the same distance to the center, and in FIG. 6 the entire cabinet opening is closed almost exclusively by the covering part 2. 31 to 34, frames 21, 21a are indicated which, according to the invention, accommodate the covering parts 1, 1a, 1b, 2. 31, in the left area, both parts 1, 2 are half open, in the middle area part 2 is pulled up by five sixths and part 1 is only visible by one sixth. In the right area, part 2 covers part 1 by a quarter. Since part 2 is transparent, a pattern combination 50 results. 32, a combination of 4 frames 21 can be seen, the coverings 1, 2, 1a, 2a of the frames 21 partially overlapping, in that the frames 21 are pushed one behind the other, while a frame 21 is pushed to the side in the middle, so
that a free passage 41 is specified. The covering part 1b of the frame 21 to the right is pulled all the way down. It is designed as a screen or projection surface. The frames 21 are moved, for example, on rollers 51 (see FIG. 31); however, hanging arrangements are also possible. 33 shows a frame 21a which is pushed in front of a window 48. A heating element 49 is covered with the covering part 2. In the heating season, the radiator 49 is at least partially exposed and the window 48 may be covered.

In FIG. 34, frames 21 according to FIG. 31 are displaced relative to one another. There is therefore a partial overlap with novel design effects between the partially open covering parts 1a and 2a of the middle frame 21 and the adjacent parts 1 and 2.

So much for the outer appearance of the covering.

In principle, the mechanics can be constructed in two different ways. In both cases there is an overlap in principle: These are endless belts 4, 8 (FIG. 30) which are connected to the side with corresponding handle strips 3, 10 of the respective covering part 1, 2. The handle strips 3c and 10c (Fig. 30), as will be explained later, are only intended for fastening the respective covering parts 1, 2 and no longer for gripping.

7 shows the covering part 1 with the handle 3 and the two bands 4a, b, with the cabinet 46 and the lower covering part 2 being omitted. The belts 4 are endless belts, the beginning and end of which Handle bar 3 are fixed. The belts 4 are guided over four rollers 5a, b each, as can be better seen in FIG. 8, which shows a side view of FIG. At least the front rollers 5a - preferably also the rear ones (5a) - are rigidly connected to one another, while the rollers 5b are pivoted.

The fabric of the covering part 1 is fastened to the handle bar 3 and guided over two rollers 6 to the rear wall of the cabinet 46, as can be seen better in FIG. 9, which shows the side view according to FIG. 8, but with the omission of the belts 4a and Rolls 5a and 5b on the right side. The rollers 6 are axially aligned with the rollers.

In the area of the rear wall of the cabinet 46, the fabric of the covering part 1 ends at an end piece 7, which end piece 7 is also rigidly connected to the bands 4a and 4b. The four straps thus serve to tension and move the fabric web or the handle bar 3 uniformly. If the handle bar 3 is pushed upward, for example, the tapes 4a and 4b attract the end piece 7, and this thus attracts the fabric web of the covering part 1 down the back wall of the closet. The covering part 1 rolls over the rollers 6 and the belts 4 roll over the rollers 5, wherein the covering part 1 can also overlay the rollers 5.

Instead of the rollers 6 and rollers 5, well sliding surfaces, for example Teflon-coated sheets (cylinder jacket segments) or the like, could also be used. (See Fig. 29) In such a case, the rollers 5 can also be mounted remotely from the segments 47. Decisive for this, however, is the desired lifting height of the grip strip 3. However, preference is given, at least for the belts 4, to well-supported rollers 5 with little rolling resistance and a large frictional resistance of the running surface of the rollers 5, for example by a rubber coating on the circumference of the rollers 5 can be achieved. The formation of the tread is crucial for the good power transmission of the belts 4 to the rollers 5 or vice versa.

The rollers 5 are also connected by means of a rigid axle which, as can be seen better from FIG. 16, is formed by the roller 6. As a result, the rotation of one roller 5a automatically leads to a rotation of the other roller 5a connected to it and the belts 4a, b thereby always run at the same speed, which results in the parallel guidance of the grip strip 3. A variant can be seen from FIGS. 18 and 17, the rollers 5a of which are not axially aligned with the roller, which is designed as a receiving roller 18. This is because this take-up roller 18 is used to automatically roll up the clothing and the rollers 5a, 9a must nevertheless be connected to one another in a torsionally rigid manner, but the shaft 23 of the roller 18 must be rigid in order to offer an attack to a spring 26, as explained later becomes.

The covering part 2 functions with a grip strip 10, with bands 8a, b, with rollers 9a, b, with rollers 13 and with an end piece 12 analogously to the covering part 1.

10 shows an elevation to show the covering part 2 with its bands 8a and 8b and the rollers 9a and 9b. A grip strip 10 is firmly connected to the covering part 2, as well as to the beginning and end of the straps 8a and 8b. The tapes 4a and 4b are slidably guided through slots 11 in the handle 10. Such slots 11 are, of course, also in the omitted grip strip 3. This initially results in the possibility of an individual shifting of the covering parts 1 and 2. However, in this variant, this individual shifting only takes place until the grip strips 3 and 10 lie against one another, as in FIGS 1 to 9, or 1.4 and 5 or 22 and 23 is shown. The rollers 5a and 5b are outside or. shown inside. However, since a roller ... b is always freely rotating and a roller ... a is connected, it may also be expedient to arrange the rollers 5,9 alternately (FIG. 30), so that the upper and lower arrangement only move around Are rotated 180 degrees, which is a simplification of production.

In the area of the rear wall, the covering part 2 also has an end piece 12 which - as described below - interacts with the end piece 7 of the covering part 1:

As can be seen from FIGS. 11 and 26, at least (preferably only one) of the end pieces 7 or 12 each has a longitudinal slot 14 or 15 for the respective other fabric web of the covering parts 1 and 2, so
that the respective end pieces 7 and 12 of the other covering part 1 or 2 lie beyond the other end pieces 12, 7. For the tapes 4 and 8 there is a slot 11b, c as well as in the handle strips 3, 10 in the end piece 7 or 12 of the respective other covering part 1 or 2 (cf. FIG. 27).

12 shows the two handle strips 3 and 10, which likewise have lead-through slots 11 and 16 for the other bands 8 and 4, respectively. The area of these feed-through slots 11 and 16, or the bands 4 and 8, are of course covered by the front wall of the cabinet in the event of an operation.

As an alternative to the longitudinal slots 14 and 15, a rod 43 (FIGS. 27 and 28) can also be provided, which is held on both sides by a side part 42 at a distance from the end piece 12d. The other covering part 1 slides through this distance, while the covering part 2 is fastened to the rod 43. With such a construction, the other end piece 7c can also be designed without a rod 43 or a longitudinal slot, since the covering part 2 can slide past it unhindered anyway. The covering part 1 is by means of Staples 45 attached to the end piece 7c. The strips 8b and 4b are fixed in the slots 11b and 11c, while the respectively adjacent strips 4b and 8b slide freely.

In the embodiment just described, two grip strips 3 and 10 each form the starting point of the covering parts 1 or 2 and the starting and ending point of at least one or two bands 4 or 8, which are guided endlessly by four rollers 5,9 or slides, not shown are. The fabric panels 1 or 2 each end at end pieces 7 or 12.

The length of the fabric webs 1 or 2 usefully corresponds to approximately half the length of the webs 4 or 8.

The end pieces 7, 12 can be arranged offset, and they are provided with a slot 14a or with a rod 43 for the other covering part
that when tightening on a covering part, for example 1, the covering part 2 is pulled along over the center of the cabinet or the opening or the surface by the end piece 7 also acting on the end piece 12 in the pulling direction upwards. In the opposite direction, the traction transmission works the same way.

The grip strips 3 and 10, like the end pieces 7 and 12, have slots 11a and 16 for the respectively unassigned or fixed strips 4 and 8. Alternatively, the grip strips and end pieces in the variants according to FIGS. 30 to 34 are narrow and without Slots made. As is known to a person skilled in the art and therefore not shown in more detail, they run on different levels, so that overlapping or sliding past one another is possible.

With a corresponding selection of the in this case preferably inextensible material for the covering parts 1 and 2, one could also use only half-length bands 4 and 8 find the end of it by leaving out the respective ribbons where the respective fabric runs. In this case - viewed in side view - the fabric web with the assigned bands would form a closed circle (see FIG. 13).

A further variant can be seen from FIGS. 14 and 20 to 23 (schematically), in which the end pieces 7 and 12 are not formed with slots for the fabric web 1, 2 for the respective other covering parts, but rather are guided laterally in rails, so
that the entrainment movement of one end piece is guaranteed for the other in the event of the handle bars being moved accordingly. The rails are designated 17a, b in FIG. 14. In this case, the slots 11, 16 for the bands must be provided. In this case, they take over the guidance of the end pieces 7, 12.

15 shows a section through the rail 17a in the longitudinal direction. The tapes, which in this case also act on the end pieces 7b and 12b, are guided in slots of the end pieces 12b and 7b analogously to the embodiment according to FIG. 11 - no longer shown. As not shown in detail, it is expedient if the effective diameter of the rollers 5 and 9 is identical to that of the roller 6 and 13 if the rollers are connected to the roller in a rotationally rigid manner.

During assembly, the fabric covering 1.2 is stretched by hand. By fixing the handle strips 3, 10 and end pieces 7, 12 by means of the straps 4.8, the tension remains upright
that there is always a smooth impression of the covering. A special variant for pretensioning the covering is shown in Fig. 30. The torsionally rigidly connected rollers 5a are fastened on a shaft 23 on which a roller 18b is also ball-bearing mounted. A spiral spring 26b is tensioned between the roller 18b and the shaft 23, so that the covering part 1 is acted on in the winding direction. An automatic winding can not take place, however, because the front end of the covering 1 is attached to the handle bar 3c, which is fixed to the belts 4a and 4b (for example by screws 40), which in turn are attached to the non-slip coating of the rollers 5a Shaft 23 are fixed against rotation. The pretension therefore only acts between the grip bar 3c and the shaft 23 or the roller 18b. Rolling up or unrolling the covering part 1 is only possible by moving the handle 3c. This does not change the tension of the spring 26b. The visible part of the covering part 1 is therefore always stretched uniformly, regardless of the length drawn out. Such a covering is operated by means of a pulley 52a, b and a belt 53a, b which is endlessly guided therein. The pulley 52a for part 1 is rigidly connected to the shaft 23, while the pulley 52b is rotatably supported on this shaft. The training for part 2 is reversed. An end plate 54 guides the rolled-up fabric web 1. The entire mechanism is accommodated in a frame 21b, which is only continuous in the engagement area 55 of the covering parts 1, 2. As can be seen more clearly from FIG. 30a, the covering parts 1, 2 and the straps 4, 8 are deflected via a deflecting rod 56 (one above and one below). The thickness of the deflecting rod 56 determines the distance between the parts 1, 2. The frame 21b can be hung on eyelets 57, for example in existing curtain rails. The covering parts 1, 2 are tensioned by opening the screws 40 in each connecting part 58, which is connected to the handle strips 3c or 10c, or by adjusting the relative position of the parts 1, 2 to the bands 4, 8. In this tensioning process, the pulley 52 must be fixed, which can be done by a fixing screw.

FIG. 16 shows a roller 6 with the rollers 5 and 9 and the belts 4 and 8 in detail, it being clearly evident that both roller 6 and rollers 5.9 lie on one axis.

A second variant of the invention has, as already mentioned in part, roller-type tension springs with rollers 18 or 19 designed as a spring drum, both for the upper covering part 1 and for the lower (2), as can be seen from FIG. 17. The spring drums 18 and 19 try to roll up the covering parts 1b and 2b, as can be seen better in FIGS. 17 and 18.

The handle strips 3b and 10a are laterally guided in a rail 17c, which is lined on the inside with felt, so
that the static friction of the handle strips 3b and 10a in the rail 17c is so great that the force of the spring drums 18 and 19 is not sufficient to roll up the handle strips and thus the fabric doors 1b and 2b (see Fig. 19). The spring drums 18 and 19 wind the fabric webs up or down only after you have lined up and pushed or pulled in the desired direction. In this variant, the bands 8 and 4 are fastened or guided in the front area, that is to say in the case of the grip strips, for example in a rail, in the same way as in the first variant. However, there are no end pieces in the rear area, so
that only two rollers 6a and 13a are provided, on the side of which, as in the first variant, cf. Fig.16, the rollers 5 and 9 for the belts 4 and 8 are located. In this case, the tapes merely have the task of fixing the grip strips 3b or 10a in a horizontal position, so that they cannot tilt in the guide rail 17 when they are moved. In this case, the rollers 5 and 9 should not lie in the axis of the rollers 6 or 13. As already mentioned, they are stored in a different location - but connected to one another in a rotationally rigid manner. The spring drums can also over have a ratchet mechanism that prevents automatic rolling up (similar to a roller blind and known, therefore not shown). The handle strips 3, 10 and the end pieces 7, 12 can in turn be covered with felt or the like in the area of their engagement in the guide rails 17.

As can also be seen from FIG. 18, the spring drums 18 and 19 are formed from two drums 25, which are laterally closed by a bearing plate 24, which is supported on a rigid shaft 23 via a bearing 29. Inside each drum 25 there is a spiral spring 26, which is fixed at the spring engagement points 27 on the rigid shaft 23 and 28 on the inside of the drum 25. A relative rotation of the drum 25 to the rigid shaft 23 thus leads to a tension or relaxation of the spring 26. The spring 26 is biased in the rolling direction of the roller doors 1 and 2. If the grip strip is loosened, the associated spring drum 18 or 19 automatically winds up the covering part.

The diameter of the drum 25 and thus the spring diameter of the spiral spring 26 should be kept as large as possible. In this way, the tensile force of the spring 26 is prevented from increasing sharply with each revolution. With a fabric length of about 150 cm of a covering 1 or 2, the circumference of the drum should be 15 to 25 cm, so that about 6 to 10 revolutions are necessary for the complete winding of the covering.

20 shows a cover wall 30 which covers the end pieces 7 or 12 or the rear region of the covering parts, so
that damage or contact with the relevant elements is prevented when loading the cabinet 46.

In a variant, FIG. 24 also shows in detail that the rollers 5a, b and 9a, b are mounted or fastened on a shaft 34 which has a flange 35 and a pin 33. The flange 35 forms the end of the roller 6 or 13, while the pin 33 rests in a blind hole 32 of the roller 6 or 13. The pin 33 is longitudinally displaceable in the blind hole 32 and can be fixed by means of a fastening screw 31. This means that a different width setting can be taken into account or brought about. A block 59 serves as a carrier for the roller 6. Instead of this embodiment, the block 59, the flange 35 and the shaft 34 can be formed in one piece as a variant, as a result of which the pin 33 is omitted and the adjustment is carried out by means of screw 31 on the roller circumference.

The rollers 9b are rotatably mounted on the roller 6 or on the shaft 34, while the rollers 9a are rigidly fastened on the roller 13 or on the shaft 34 thereof. The opposite is the case with the rollers 5b and 5a. Thus, when the grip strip 10 is moved over the belts 5b, there is a rotation of the roller 13 which has no influence on the roller 6. As a result, the covering part 2 is moved. The rollers 9a and b are fastened or mounted in the reverse order, so that moving the grip strip 3 causes the covering part 1 to be displaced without influencing the roller 13 or the covering part 2. Of course, as already stated above, the covering parts 1 and 2 are attached to the handle strips 3 and 10, and the straps 4b and 8b are attached to the handle strips 10 and 3, for example by screws or staples. The rollers 5,9 are arranged either symmetrically or offset.

The detailed illustration in FIG. 25 shows that the grip strip 10b, like the grip strip 3 (not shown), consist of a cross strip 37 and a cover strip 38 which are connected to one another, for example, by an adhesive tape 39 are. The cross bar 37 has laterally slots 11a for the bands 4b and 8b and carries on its side surfaces a felt 36 for the somewhat braked sliding in side guides of the cabinet, not shown. Fastening screws 40 serve to fasten the respectively assigned band 4b. 25A shows a side view of the handle 10b.

The invention is not restricted to the figures shown and explained by way of example. All handle strips or end pieces, side guides, etc. can be made of wood as well as metal or plastic. Furthermore, multi-layer coverings can also be provided
that in the case of picture boards, for example, a large number of different picture boards can be brought to view, so that, in the case of decorating an apartment, for example, differently colored coverings can be selected. In such cases, several rolls or rollers are provided in parallel one above the other. This does not change the principle of the invention. In particular, those variants are also within the scope of the invention in which the coverings lie one behind the other (in the direction of the plan view), so that the overlap of the upper and lower parts is possible, which results in special effects, for example with partial transparency of the front cover parts, as can be seen in FIGS Fig. 31 and 32 can be seen.

To support the parallel guidance of the handle strips and / or end pieces, T-shaped lugs can also slide on the same in the rails, so that canting is made more difficult or prevented by these lugs. Under certain circumstances, this could also be provided as an alternative to the measures of claim 3.

Claims (10)

1. Covering for covering an opening or lining a surface, having a web of flexible material, which can be closed at both sides of the covering by a continuous tension means (4, 8) which is guided via pulleys (5, 9), characterised in that the covering consists of two parts (1, 2), for each of which a tension means (4, 8) is provided at both sides of the covering parts (1, 2), each tension means (4, 8) being connected exclusively to that part (1, 2) of the covering which is coordinated with it, and each part of the covering (1 or 2) being capable of movement independently of the other part (2 or 1) or of its tension elements (8, 4) and being capable of being fixed in any desired position, and at least two pulleys (5, 9), provided at both sides of the parts of the covering (1, 2) which are coordinated with it, being nonrotatably connected to one another and being designed for slip-free transmission of a tension to the tension means (4, 8).

2. Covering according to Claim 1, characterised in that the covering parts (1, 2) consist of a material which is elastically stretchable only in the opening direction which is preferably non-stretchable at right angles to the opening direction, the tension means consisting of tapes (4, 8) or ropes which are each guided via 4 pulleys (5, 9) - or each guided by 8 pulleys (5, 9) - 4 adjacent to the coordinated part of the covering (1, 2) and 4 adjacent to the other part of the covering (2, 1) - and form a closed system, and that the first 4 pulleys (5a, 9a) are covered with a friction cover - for example of rubber.

3. Covering according to Claim 1 or 2, characterised in that the covering parts (1, 2) are guided over rollers (6, 13), the pulleys (5a, 9a) which are nonrotatably connected to one another - and if necessary with the rollers (6 or 13) - being those over which the particular covering part (1 or 2) is guided, while the other pulleys (5b, 9b) are rotatably mounted independently of one another - if necessary independently of the other rollers (13, 6).

4. Covering according to any of the preceding Claims, characterised in that each of the covering parts (1, 2) has a grip bar (3, 10) at its front end and an end piece (7, 12) at a rear end, and that the tension means (8, 4) (of the other covering part) (2, 1) can glide freely in recesses in the grip bars (3, 10) or in the end pieces (7, 12), the rear ends of the two parts (1, 2) having their end pieces (7, 12) in each case on the other side of the other end pieces (12, 7) and being prevented from gliding past one another.

5. Covering as claimed in Claim 4, characterised in that at least one of the rollers is in the form of a take-up roller (18a, 19a) and is arranged on a shaft (34a) away from the pulleys (5a, 9a) nonrotatably connected to one another, but, if required, aligned with the other pulleys (5b, 9b) for winding up the coordinated covering part (1, 2), the take-up roller (18a, 19a) being subjected to a tension with respect to the shaft (34a) by a spring (26a), if necessary by a coil spring, in the winding direction, and the grip bar (3, 10) being guided laterally, with braking, in at least one rail (17).

6. Covering according to Claim 1 or 2, characterised in that the covering parts (1, 2) are guided via guide pieces (20) which are in the form of cylindrical segments and preferably have, for example, a Teflon antifriction coating.

7. Covering as claimed in any of the preceding Claims, characterised in that the tapes (4, 8) consist of a non-stretch material, and/or that they run at least partly in rails (17), which may be lined - for example with felt (36) - for braking of the grip bars (3, 10) and/or of the end pieces (7, 12) on the tapes (4, 8) or on the covering parts (1, 2).

8. Covering according to any of the preceding Claims, characterised in that the covering parts (1, 2) in the open state are each wound on a take-up roller (18b, 19b) mounted on a shaft (23), which take-up roller has a tension apparatus - preferably in the form of a coil spring (26b) - between the shaft (23) and the roller (18b, 19b) for tensioning the covering parts (1, 2) with respect to the tension means (4, 8), the tension means (4, 8) or pulleys (5a, 9a) coordinated with its take-up roller (186, 196) being nonrotatably connected to the shaft (23).

9. Covering according to any of the preceding Claims, characterised in that more than 2 covering parts (1 and 2) are present, and that one pair of the covering parts (1 and 2) in each case is mounted in a movable frame (21), for example a laterally displaceable one, the frames, for example, being displaceable relative to one another in further rails (22), and the grip bars (3, 10) and the end pieces (7, 12) of the covering parts (1, 2) preferably being capable of gliding past one another, so that at least partial overlap of the covering parts (1, 2) can be obtained.

10. Covering as claimed in any of the preceding Claims, characterised in that at least a part of the covering (1, 2) is image-reflecting.

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