EP0082302A1 - Solar and/or weather protection device - Google Patents

Abstract

1. In a protective device against the sun and/or bad weather, in particular for openings in buildings, for places and the like with an inclined or horizontal surface respectively in relation to the vertical, with at least one covering curtain (1) carried by a winding shaft (9) arranged in the zone of a surface edge of the area to be covered, and in the unwound state preferably hold in an inclined or horizontal position respectively in relation to the vertical, said covering curtain being operable by at least one traction roller (4) which acts on its end opposite the end fixed at the side of the winding shaft and can be returned by means of a guide mechanism (5) arranged in the zone of the surface edge of the area to be covered opposite the winding shaft (9), and being held in initial tension by a spring (17), characterized in that at least two traction rollers (4), by their end opposite the end acting on the covering curtain, can be fixed to a winding-up mechanism (8, 10, 11) which can be operated in both winding-up and unwinding directions by means of an actuating mechanism (13) and which is turningly bearinged in relation to the winding shaft (9) and drivingly connected herewith by means of at least one initially stressed spring (17).

Description

The invention relates to a sun and / or weather protection device, in particular for building openings, squares and the like with a surface that is inclined or horizontally with respect to the vertical, with at least one winding shaft arranged in the area of a surface longitudinal edge of the surface to be shielded, in the unwound state, preferably with respect to the vertical inclined or horizontally held covering curtain, which acts on its end opposite the end fixed on the winding shaft pulling elements can be actuated and is held in tension by means of a spring.

In the case of arrangements of the generic type, it is practically impossible to use the dead weight of the covering curtain for unwinding it from the winding shaft. It has therefore been used to provide pulling elements acting on the covering curtain, by means of which the covering curtain can be actuated against the force of a spring acting on the winding shaft in the winding direction. The spring travel of this spring corresponds to the maximum unwinding distance, which can result in design restrictions which greatly restrict the field of use of known arrangements of the generic type. However, it is particularly disadvantageous that the spring tension changes as a function of the spring travel. In the unwound state of the covering curtain, therefore, a very large force acts on it, which practically has to be transmitted by the curtain, which is thereby subjected to a not inconsiderable stress, which can also lead to constructive restrictions. It is therefore often necessary in the known arrangements to use springs with a large spring travel. However, this not only results in a comparatively large structural effort, but in many cases also requires a very large amount of space. In this context, it is also found to be particularly disadvantageous that, in the known arrangements, the spring size has to be practically adapted to the desired extension length of the covering curtain, which runs counter to component standardization and therefore a rational approach position practically does not allow.

Proceeding from this, it is therefore the object of the present invention, while avoiding the disadvantages of the known arrangements, to provide a device of the generic type which is simple in construction and inexpensive to manufacture and in which the force to be applied or unwound from the covering curtain is applied over the entire extension path remains almost constant within a narrow range.

This object is achieved in a surprisingly simple manner according to the invention in that the traction elements can be deflected by means of a deflection device arranged in the area of the surface edge of the surface to be shielded opposite the winding shaft and can be fixed to a winding device with their end opposite the end engaging the covering curtain an actuating device can be actuated in the winding and unwinding direction and is rotatably mounted with respect to the winding shaft and is coupled to the drive by means of at least one pretensioned spring.

The winding shaft is taken along practically in a ratio of 1: 1 by the winding device assigned to the pulling elements. As a result of the uniform actuation of the winding device and the winding shaft, the tension of the intermediate coupling spring advantageously remains independent of the angle of rotation traveled and thus independent of the lift of the covering curtain. The on the Cover curtain transmitted voltage therefore advantageously remains practically constant at a low level, which ensures gentle operation and thus a long service life. Nevertheless, however, a compensation for path differences is possible by means of the resilient coupling between the winding device and the winding shaft, which result from the fact that the Abdeckvorhang and the parties engaging traction elements practically opposite to the assigned winding shaft or the associated Aufwickeleinrich- do ^g up or unwound therefrom are so that the respective winding diameter increases or decreases in opposite directions. However, the bandwidth within which the spring tension fluctuates can be very limited in an advantageous manner. The positive consequence of this is that a comparatively small spring can be used, which enables a compact design. Another advantage is the fact that one and the same spring can be used for practically all sizes. An adaptation of the spring size and, accordingly, the dimensioning of the parts transmitting the spring forces to the circumstances of the individual case is advantageously no longer necessary, which enables strong component standardization and thus rational production and storage. The advantages that can be achieved with the invention can therefore be seen in particular in excellent economy.

The winding shaft and the winding device ^g assigned to the traction elements can advantageously be arranged coaxially to one another. Hereby a particularly space-saving and compact design can be achieved. In a further development of this idea, the take-up device assigned to the pulling elements can be provided with a drive shaft which passes through the winding shaft and is coupled to it in a spring-like manner, on which take-up elements which are assigned to the pulling elements and are arranged laterally next to the winding shaft are fastened. The winding shaft can be mounted on the drive shaft in an advantageous manner, which not only reduces the structural outlay and the space required, but also enables a pre-assembly on the workshop side and thus a simple on-site assembly of this entire assembly.

A particularly simple embodiment of the superordinate measures can consist in the spring coupling the drive shaft with the winding shaft being designed as a spiral spring encompassing the drive shaft. This is a comparatively cheap, yet very robust component.

In a further development of the higher-level measures, the structural unit assigned to the winding shaft and the structural unit assigned to the deflection device can each be arranged in a box provided with an outlet slot for the covering curtain or for the traction elements. This not only results in the protected accommodation of these units, but also a clean appearance.

The measures according to the invention can at a equipped with an awning fabric Verschattun ^g On find application. The end of the awning fabric opposite the end fastened to the winding shaft can expediently be fastened to a pulling rail which extends over the entire width of the web and on which the pulling elements act. This ensures an even tension of the awning fabric.

However, the measures according to the invention can also be used in a device equipped with a slatted armor, for example a roller shutter, a roller shutter or a roller cover or the like. In this case, the front lamella in the unwinding direction can expediently be designed as a pulling rail on which the pulling elements act.

Guide rails arranged between the winding shaft and the deflection device can be provided for guiding the pull rail and possibly all the slats of a slat armor. This advantageously results in a ^g e-accurate height fixation of the traction rail, whereby the traction elements are relieved. At the same time, these guide rails are advantageously suitable for protecting the associated run of the traction members.

Further advantageous refinements and preferred developments of the superordinate measures result from the following description of an exemplary embodiment with reference to the drawing in conjunction with the remaining subclaims.

• Fig. 1 eine Seitenansicht einer erfindungsgemäßen Pergolaverschattung,
• Fig. 2 einen Längsschnitt durch die die Wickelwelle und die den Zugorganen zugeordnete Aufwickeleinrichtung enthaltende Baueinheit,
• Fig. 3 eine Seitenansicht einer Spannschiene, an welcher das den Abdeckvorhang bildende Markisentuch und die Zugorgane festgelegt sind und
• Fig. 4 einen Längsschnitt durch die in seitlichen Führungsschienen aufgenommene Spannschiene.

The drawing shows:

• 1 is a side view of a pergola shade according to the invention,
• 2 shows a longitudinal section through the structural unit containing the winding shaft and the winding device assigned to the pulling elements,
• Fig. 3 is a side view of a tensioning rail on which the awning fabric forming the covering curtain and the traction elements are fixed and
• Fig. 4 shows a longitudinal section through the clamping rail received in the lateral guide rails.

The pergola shade according to the invention, which is the basis for the figures, is primarily used as sun protection for the arcade below. For this purpose, an almost horizontal covering curtain 1 is provided, which is in the form of a wrapping bale 3 arranged in the area of a surface edge of the space to be shielded, here in the region of the surface edge formed by the adjacent wall 2, and can be unwound if necessary , in the unwinding direction the front end of the awning fabric forming the cover curtain 1, here indicated by dash-dotted lines, preferably designed as straps 4, by means of which the cover curtain 1 is pulled arranged wrapping bales 3 is removable. The traction elements 4 are deflected in the region of a deflecting device 5 arranged on the surface edge of the surface to be shielded, opposite the direction of extension of the covering curtain 1 illustrated by the arrow 6. The deflection device 5 is here simply provided with the individual, freely rotatably mounted deflection rollers 7 associated with the straps 4 forming belts. The end of the traction elements 4 which is at the front in the direction of movement when the covering curtain 1 is unwound from the wrapping bale 2, that is to say the end opposite the end of the covering curtain 1, is fastened to an associated winding device 8. The winding and unwinding directions of the covering curtain 1 and pulling elements 3 are in opposite directions, so that when the covering curtain 1 is unwound from the winding bale 3, the pulling elements 4 are simultaneously wound onto the associated winding device 8 and vice versa. In the illustrated embodiment, with a coaxial arrangement and gleichsinni- he ^g rotation of wrapping bales 3 and take-up device 8, this is simply accomplished by the Abdeckvorhang 1 in the region of the upper edge of the wrapping bale 3 and the tension elements 4 in the region of the lower edge of the respectively associated take-up device 8 , that is to say practically diametrically opposite one another, can be wound up or unwound.

A tubular winding shaft 9 is provided for receiving the covering curtain 1 or the associated wrapping roll 3, as can best be seen in FIG. 2, which extends over the entire width of the sheet of material forming the covering curtain 1 here.

The winding device 8 assigned here in the region of the outer corners of the front edge of the covering curtain 1 attacking in the unwinding direction consists, as can also be seen in FIG. 2, of belt pulleys 10 arranged laterally next to the winding shaft 9 and coaxially on one of the winding shaft 9 penetrating drive shaft 11 are rotatably fixed by pins 12. The drive shaft 11 can be driven by means of an associated drive device 13. In the exemplary embodiment shown, this consists of a drive pin which can be brought into engagement with a removable crank. To achieve the desired reduction, a countershaft 14 is provided, the input of which is formed by the drive pin 13 and the output of which is connected to the drive shaft 11. However, it would also be readily conceivable to provide a motor instead of a manual drive for driving the drive shaft 11. This could be accommodated in a space-saving manner directly in the drive shaft 11, which is likewise expediently formed by a tube, as is indicated in FIG. 2 by dash-dotted lines at 15.

The winding shaft 9 is freely rotatably received on the drive shaft 11 by lateral support rings 16 and can be driven by the latter via a prestressed spring 17 in the same direction and uniformly. The spring 17 is in the illustrated embodiment, as the _T friction shaft 11 comprising, in the annular space between drive shaft 11 and the winding shaft 9 is formed arranged spiral spring, which at one end to a driving shaft side fixed cam ring 18 and by its other end to a wik fixed on the shaft side, is formed here by the adjacent support ring 16 driver ring. The resilient coupling brought about by the spring 17 between the drive shaft 11, which can be driven by means of a drive device, and the winding shaft 9 ensures that it is driven together with the drive shaft 9 here uniformly and in the same direction, with which the covering curtain 1 and the traction elements 4 are offset diametrically as a result 1 can be wound up or unwound in opposite directions. By means of the spring 17, the path differences resulting as a result of the opposite diameter enlargement or reduction in the region of the winding bale 3 and the windings recorded on the belt pulleys 10 are compensated for at the same time. The spring tension fluctuates within a narrow range around a set output value.

The preload set in the area of the spring 17 is selected such that the covering curtain 1 is taut on the one hand in the unwound state, but on the other hand is not overused. The spring 17 is to be designed in such a way that the available spring travel is sufficient to compensate for the travel differences mentioned above. The pretensioning of the spring 17 can be accomplished in that, starting from a relaxed position, the freely rotatably mounted winding shaft 9 is rotated by a corresponding angle when the drive shaft 11 is at a standstill, and then only a tight connection of the front end of the covering curtain 1 in the pull-out direction with the Tension members 4 produced becomes. This can be done on site during assembly work. However, it would also be conceivable to preload the spring 17 at the factory. In this case, the shafts 9 and 11 coupled together by the prestressed spring 17 would first have to be secured against mutual rotation by means of a pin or the like. The unlocking would take place after the covering curtain 1 had been connected to the associated pulling elements 4.

The cover curtain 1-formed here by a web-shaped awning cloth is fixed with its front end in the unwinding direction to a tensioning rail 19 which extends over the entire width of the web and which uniformly transmit the forces exerted by the traction elements 4 to the entire front edge of the cover curtain 1. The tensioning rail 19 can be pinned to the associated end of the covering curtain 1. In the embodiment shown in FIG. 3, the awning fabric forming the covering curtain 1 is provided with a hemstitch 20, in which the tensioning rail 19, which is expediently designed as a tube to avoid sharp edges, is inserted. The tensioning rail 19 is provided in the region of its ends with guide tabs 21 which project beyond the relevant side edges of the covering curtain 1 and, as can best be seen from FIG. 4, into a respectively assigned guide channel from the side. 1 engage, which, as shown in FIG. 1, connect the structural unit accommodating the deflection device 5 and the structural unit accommodating the winding bale 3 and the winding device 8.

The guide tabs 21 can be molded directly onto the tensioning rail 19. In the exemplary embodiment shown, the tubular tensioning rail 19 is provided with lateral plug pins, which have the guide tabs 21 and are preferably designed as plastic moldings. The straps provided here to form the traction elements 4 are fastened to the guide tabs projecting laterally from the covering curtain 1, which ensures that the straps 10 which can be accommodated on the belt disks 10 arranged laterally next to the winding shaft 9 run perpendicular to the axis of their winding device, thereby avoiding side pull and the belt edges ^e-g are spares. At the same time, this ensures that the straps forming the traction elements 4 run in the region of the guide rails 22 in the running channel 23 assigned to the guide plates 21, which removes the straps from the direct influence of the weather in the region of their end strand which is at risk. When using a slat armor to form the covering curtain 1, for example in the case of a roller shutter, a swimming pool cover and the like, the foremost slat in the unwinding direction can simply be reinforced to form the tensioning rail and somewhat lengthened compared to the other slats. In an embodiment of this type, the ends of all the slats can advantageously engage in lateral guide rails which absorb the slat weight and ensure exact straight guidance of the slat armor.

The here the tension elements 4 forming belts are provided on their rail-side span ends, such as _o Fig 3, each provided with a loop 24 which can be suspended in a bracket 25 provided on the tensioning rail side. The bracket 25 is provided in the illustrated embodiment with a threaded pin 26 which extends through an associated bore in the area of the associated guide plate 21 and is adjustably supported thereon by means of a nut 27, which can be secured by means of a lock nut. This makes it possible to compensate for differences in length in the area of the tension members 4 and thus to ensure a uniform pull of all the tension members 4.

1, the distance between the assembly assigned to the wrapping bale 3 and the assembly containing the deflection device 5 is bridged by the guide rails 22 receiving the guide tabs 22 in the illustrated embodiment, as can be seen best in FIG. 1. In the exemplary embodiment shown, the structural unit containing the winding 3 assigned to the covering curtain 1 and the winding device 8 assigned to the belts 4 is accommodated in a box designated 28 as a whole. This can, as can be seen best in FIG. 2, by lateral bearing shells 29 for mounting the drive shaft 11 arranged here centrally and a jacket 30 connecting these bearing shells to one another and extending over the entire width of the arrangement according to the invention. The same can be done for the deflection device 5 receiving unit apply. However, it would also be possible here to assign each deflection roller 7 its own box 31, which simply consists of a bearing shell accommodating the deflection roller 7 and a cover fixed thereon can hen. The boxes 28 and 31 are provided with inlet and outlet slots for the covering curtain 1 and the traction elements 4. The guide rails 22 can simply be fixed to the boxes 28 and 31. In the example on which FIG. 4 is based, the guide rails 22 are supported on the building side by additional supports 32.

In the case of a very large width of the surface to be shielded, it may be advisable, in order to avoid a deflection of the tensioning rail 19, which extends over the entire width, to provide a plurality of tension members distributed uniformly over the length of the tensioning rail 19 and to divide the covering curtain 1 into a correspondingly large number of fields. A winding shaft can be assigned to each curtain_field, it being possible for all winding shafts arranged in alignment next to one another to be accommodated on a common drive shaft. In the area between the individual winding shafts, additional belt pulleys or the like can be provided for winding up additional traction elements.

The above statements show that the general idea of the solution according to the invention is not limited to the exemplary embodiments shown and described, but can be adapted to the circumstances of the individual case.

Claims (10)

1. Sun and / or weather protection device, in particular for building openings, squares and the like with a surface that is inclined or horizontal with respect to the vertical, with at least one winding shaft (9) arranged in the area of a surface edge of the surface to be shielded, preferably in the developed state opposite the vertical inclined or horizontally held covering curtain (1) which can be actuated by tension members (4) engaging at its end opposite the end of the winding shaft which is fixed ^g e-placed and is held in tension by means of a spring (17), characterized in that the Traction elements (4) can be deflected by means of a deflection device (5) arranged in the area of the surface edge of the surface to be shielded, which is opposite the winding shaft (9), and can be fixed to a winding device (8, 10, 11) with its end opposite the end engaging the covering curtain (1) which by means of an actuating device (13) in Aufun d unwinding direction can be actuated and is rotatably mounted with respect to the winding shaft (9) and by means of at least one prestressed spring (17) is hereby coupled in terms of drive. 2. Device according to claim 1, characterized in that the winding shaft (9) and the winding device (8; 10, 11) are arranged coaxially to one another and can be driven in the same direction and that the leading and trailing edge of the covering curtain (1) and traction elements ( 4) diametrically opposed to each other 3 _o Device according to claim 1 or 2, characterized. that the winding device (8) associated with the traction elements (4) has a drive shaft (11) which passes through the winding shaft (9), which is preferably designed as a tube, and is resiliently coupled therewith, preferably also designed as a tube, on which the traction elements (4), which are preferably designed as belts assigned, laterally arranged next to the winding shaft (9), preferably designed as belt pulleys (10), are fastened. 4. The device according to claim 3, characterized in that the winding device (8) in the drive shaft (11) formed as a tube arranged motor (15) and a preferably self-locking gear (14). 5. Device according to one of the preceding claims, characterized in that the drive shaft (11) with the winding shaft (9) resiliently coupling spring (17) is designed as the drive shaft (11) encompassing spiral spring which on the one hand on a drive shaft fixed and on the other a winding shaft-fixed driver (18) is held. 6. Device according to one of the preceding claims, characterized in that the winding shaft (9) and the winding device (8) associated unit in a with outlet slots for the cover curtain (1) and the traction elements (4) provided box (28) and the deflection device (5), which is preferably associated with deflection rollers (7) that are freely rotatably mounted about deflection rollers (7), is arranged in a box (31) provided with outlet slots for the tension elements (4). 7. Device according to one of the preceding claims, characterized in that the covering curtain (1) is designed as a web-shaped awning fabric, the end opposite the end fixed to the winding shaft (9) is fastened to a pulling rail (19) extending over the entire web width The lateral ends of which are guided in guide rails (22) which are arranged in the region between the winding shaft (9) and the deflection device (5) and on which the tension members (4) which are also preferably arranged in the region of the guide rails (22) act 8. Device according to one of the preceding claims 1 to 6, characterized in that the covering curtain (1) is designed as a slat armor, the lateral ends of the slats in the region between the winding shaft (9) and the deflection device (5) arranged guide rails (22) are led and the foremost lamella in the unwinding direction is designed as a pulling rail (19) which attack the tension members (4), which are preferably also arranged in the region of the guide rails (22). 9. Device according to one of the preceding claims, characterized in that the length of the traction elements (4) can be adjusted by means of an actuating device (26, 27) supported in each case and supported on the cover curtain. 10. Device according to one of the preceding claims, characterized in that two or more cover curtain panels arranged next to one another are provided, each cover curtain panel being assigned a winding shaft (9), all winding shafts (9) being penetrated by a common drive shaft (11), wherein In the area between the side-by-side winding shafts (9) there is at least one winding element for a traction element (4) attached to the drive shaft (11), which is mounted on a tensioning rail (19) that is movably mounted in the direction of curtain extension and retraction, preferably through all cover curtain panels ) attacks.

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