DE8524022U1 - Covering device - Google Patents

Description

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PATENT LAWYERS
DIPL-ING, BUSCHHOFF

Dipl.-Ing, HENNICKE

DIPL.- ING. VOLLBAGH

5 COLOGNE / RH.

KAISER.WILHELM-RING U

»Ig.-Nr.

The invention relates to a covering device with a flexible, large-area covering means, in particular one Awning fabric that can be wound up and unwound on a winding shaft provided with a drive: and on its free one Edge one end of at least one flexible traction means is attached, which is at a distance from the winding roll arranged Umlenkeinrichtung out and with its other end of a coincident with the winding shaft rotating winding device is unwound and wound, wherein spring means are provided, which the path differences Compensate for covering means and traction means when winding and unwinding in the same direction.

Covering devices, which are covered with a flexible covering material, such as an awning fabric, a net or a lamellar curtain, should cover a substantially horizontal or only slightly inclined to the horizontal surface, need a jig with the or the like on the front edge of the awning fabric. when unwinding or rewinding Train is exerted and the cover means is kept taut so that it does not sag. To achieve this, ropes or belts were previously attached to the front edge of the covering, with which the awning fabric was pulled forward and which were wound up on a take-up device. A brake on the winding shaft took care of it for ensuring that the covering material always remained taut. When

AH. "... G 85 24 022.2 I Wi 157 | COLOGNE, July 11th, 1986 j

please provide information

Note i WEINOR Dieter Weiermann GmbH & Co. |

Mathias-Brüggen-Str. 110, 5000 Cologne 30 |

Title: Covering device I

winding the fabric on the winding shaft, the belts attached to the front stand of the awning fabric were removed from the winding device unwound, which was also provided with a brake, so that the awning fabric also when winding was kept tense.

This known device is cumbersome and requires two separate drives for unwinding and winding up the covering material, which are arranged in different places. This makes the covering device very complex and expensive.

In order to achieve simplification, it is known, due to the force acting on the front end of the cover means tension means to a deflection device to the winding shaft and wound onto a same direction as the rotating Aufwickelvorrich- I processing. A single, reversible drive is then sufficient, driving the winding shaft and winding device at the same time, so that when the awning fabric is unwound, the traction means guided over the deflection device is wound up at the same time and vice versa (DE-OS 31 47 827). With this construction, however, there is the problem that the diameter of the wrapped with the covering means

Λ, winding shaft is reduced when unwinding, while the «

Diameter of the winding device when winding the train by means of enlarged, so that differences in length in the traction mechanism occur during unwinding and winding. About these path differences compensate, are in the known device winding shaft and winding device rotatable against each other and through combine a torsion spring.

However, this known construction is complicated in its construction and particularly difficult to assemble because the spring biased to a certain extent and must be locked during assembly, before they are finished after the covering device is put into effect. Besides, the

The effect of the spring is not constant, but is continuous larger ^ the more the covering agent is unwound from the winding roll. In addition, the fall widths of the cover means limited that can be mastered with such a torsion spring.

The object of the invention is to design a covering device of the type explained in more detail at the outset so that it can be used with simple, Commercially available components can be produced with little effort and even with large failure distances and angled guidance of the covering means works properly and only a single drive motor for winding and unwinding of the covering means is required.

This object is achieved with the invention in that the winding device is connected to the winding shaft in a rotationally fixed manner and the deflection device in the direction of the tensile force of the traction means is resiliently mounted and can be moved back and forth.

This configuration has the advantage that the winding device and winding shaft form a unit, which is from a single Drive is driven to rotate in one direction or the other and at the same time unwinds the covering means

j and the traction device winds up and vice versa, with the occurring Path differences can be compensated for in a simple manner that the deflection device for the traction device is and moved. In this case, the deflection device is expediently a deflection roller that operates under the action of a spring element isteht, which strives to move the pulley against the tensile force of the traction means and thereby tensioned the traction means to keep.

j This has the advantage that neither when unwinding

while the cover is being rolled up, e.g. an awning fabric, a brake is required, as the awning fabric is always held in place by the deflection device, which is held under spring tension.

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I is kept taut, regardless of how far the awning (I. the cloth has been removed from the roll,

I The deflection device can be fitted with a bearing block at the free end

si be arranged on a spring loaded rod. Here- v at the spring element is suitably a gas spring, to dej ren piston rod of the bearing bracket of the guide roller is mounted. 1

The deflection device is expediently guided in a longitudinally displaceable manner in a guide rail, and the spring element is arranged in the guide rail. This ensures that the guide devices and the spring element, one of which is arranged on opposite sides of the covering means, are accommodated in a protected manner. In order to keep the path differences of the traction means during unwinding and winding of the Marki-1 sentuches as small as possible, it is expedient to f as a pulling means a thin steel strip to use, one end i to a connected to the covering flange and ■ the other end is attached to a winding disc serving as a winding device. The diameter of the winding device wound with the thin steel strip changes only slightly when the traction device is wound and unwound, so that the path differences are kept small i; and the deflection device is even with large failure distances

f the covering means within reasonable limits

; <and moved.

i A particularly favorable construction results when the I guide rail for the deflection device has at least one guide surface for the edge strip. On this lead

I rungsfläche can each end of the edge strip with a

Guide roller slide along when the cover means of the Winding shaft is unwound or wound on this. Since only small frictional forces are effective here, suffice for Unwinding and winding up the awning fabric relatively low driving forces.

In order to be able to use the covering device according to the invention for covering bent surfaces, as is often the case In the case of glass canopies, winter gardens or greenhouses, the guide rail can have a base part and at least one Have angled part in which the spring element and the deflection device for the traction means are housed. At the transition point between the base part and the angled part are then a deflection roller for the covering means and a Reverse roller stored for the traction mechanism. Despite the bent guidance of the awning fabric, it is stretched in every position held regardless of whether its front edge is in the base part or angled part.

Although in the case of covering devices of the type presented here, as a rule, two traction devices with deflection devices and winding devices may be used which are adjacent to the opposite side edges of the covering means, e.g. Awning, it is in the construction according to the invention also possible to provide one or more additional guide rails in the middle area of the awning fabric are located at a distance below the cover and deflect additional traction means and lead back where they are on with the winding roll synchronously rotating winding devices are wound up. Such a construction is at very broad covering means expedient, the front edge of which is then additionally grasped and tensioned in the central area can.

Further features and advantages of the invention emerge from the following description and the drawing, in the preferred one Embodiments of the invention in more detail with examples are explained. It shows:

Fig. 1 the left side of a horizontally arranged cover awning according to the invention in a Top view and partially in horizontal section along line 3> I of Fig. 2,

FIG. 2 shows the object of FIG. 1 in a vertical longitudinal section along line II-II,

3 shows a cross section through the covering device according to FIG. 2 along line III-III and

4 shows another exemplary embodiment of the invention with an angled cover means in one schematic, perspective illustration.

In the drawings, 10 denotes a cover device which is arranged substantially horizontally and with the a space arranged under the cover device 10 is protected from solar radiation or the rigors of the weather shall be. The illustrated embodiment is a cover awning in which the cover means 11 is a Awning fabric is. For other purposes, other covering means can be used instead of the awning fabric, for example a net made of wire or roving fibers, a roller curtain made of interconnected plastic rods or a roller grille, as it or the like as the conclusion of garage entrances. is used. In the following, however, the invention is intended using the example of cover awnings are described without the invention § being limited thereto.

As is known per se, the awning fabric 11 is on a winding shaft 12 wound, which is rotatably mounted in a housing or awning box 13 in a manner not shown here is and has a reversible drive, not shown, with which the winding shaft 12 in the one or can be rotated in the other direction. The awning box 13 is for example on a house wall or on a pergola attached and has a projecting roof 14, which the awning fabric 11 wound on the winding roll 12 from rain or snow protects.

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The front, free edge 14 of the awning fabric 11 is clamped in an edge strip 15 which extends over the entire width & J! S Awning fabric extends and trunnions at both ends

16 are arranged, of which only one is shown in the drawing.

On both sides of the awning fabric 11 and at a certain distance from its side edges there is a guide rail

17 arranged. These guide rails 17 are approximately
at the level of the winding shaft 12 and extend in the horizontal direction above the surface to be covered or the space to be covered. They are mounted on a suitable support structure, for example on a pergola, and are connected to the awning housing 13 at their rear end 17a (FIG. 2). Of the two guide rails 17 is only in the drawing
the one on the left side of the awning is shown. Since the guide rail is also designed on the opposite, right-hand side, only the one guide rail 17 and the parts belonging to it are to be used here
to be discribed.

As can be seen from FIG. 3, the guide rail 17 has an essentially rectangular box profile with a through opening 18 in the upper region on the side facing the awning fabric 11. Below this opening 18 there is an inwardly projecting one in the interior of the guide rail
Bar 19 with an upper guide surface 20. Through the elongated opening 18, the bearing pin 16 of the edge bar 15 protrudes into the interior of the guide rail 17, whereby it extends
with a roller 21 with a ball bearing 22 on the
Bearing pin 16 sits, is supported on the guide surface 20 of the bar 19 and can roll along on this.

It can be seen from Figs. 1 and 3 that the inner end 16a of the Pin 16 carries a tab 23 which is pushed onto the pin 16 with an eye 24 and is secured there with snap rings 25

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is. One end 27a of a traction means is fastened to the tab 23 with two rivets 26, which in the preferred embodiment is a thin steel belt, but also a roller shutter belt, a steel cable, a thin chain or a plastic belt can be. The traction means extends to the front end 17b of the guide rail 17 and is there around a deflection device out, which is designated as 28 in its entirety. The deflection device 28 consists of a deflection roller 29 which rotatable with a bolt 30 in a U-shaped bearing block? 1 is stored. This bearing block 31 has fastening means 32 attached to the free end 33a of a spring element 34 which is accommodated in the lower part of the guide rail 17.

In the illustrated, preferred embodiment, the spring element 34 is a gas pressure spring 35, the cylinder body with a bearing part 37 and a bolt 38, which the opposite Side walls of the guide rail 17 penetrates, is mounted in the guide rail 17 and on its piston rod 33 the pulley 29 is attached to the bearing block 31.

The gas pressure spring 35 is designed so that it tends to hold the piston rod 33 in its extended position. It is secured in its position by laterally arranged holding blocks 39 and 40.

Instead of the gas pressure spring, a helical compression spring can also be provided, which is located on a suitable abutment in the the lower part of the guide rail 17 is supported and acts on the bearing block 31 and is bestoben, this in the direction of dos front To move the end 17b of the guide rail.

It can be seen from FIGS. 1 and 2 that the traction means 27 is placed around the deflection roller 29 and held in the guide rail 17 of the spring element 3 4 is guided to the rear. There it is with its other end 27b on the circumference of an Aü £ - winding device 41 attached.

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The winder 41 consists of one with side panels 42 provided take-up roll 43, which is on the winding shaft 12 sits and is non-rotatably connected to it. A similar take-up roll 43 is of course also on that in the drawings arranged right side of the winding shaft, not shown.

The mode of operation of the device is as follows:

If the awning fabric 11 wound on the winding shaft 12 is to be unwound and pulled forward, around the under the covering device To cover lying space, the winding shaft 12 is clockwise from the drive in the direction of arrow 44 in FIG turned. Since the take-up rollers 43 are taken along, they wind the traction means attached to their circumference 27, these being pulled in the direction of arrows 45. The edge strip 15 on which one ends 27a of the traction means 27 are fastened with the tabs 23 and in which the front edge 14 of the awning fabric 11 is clamped, is here taken along and pulled forward in the direction of arrows 46, the rollers 21 of the edge strip 15 on the guide surfaces 20 roll along the strips 19.

Since the pulleys 29 of the deflection device 28 from the spring elements 34 are pressed in the direction of the front end 17b of the guide rail, i.e. in the direction of arrow 47, the pulleys 29 keep the traction means 27 always tensioned, the direction of the tensile force in the upper and lower strand of the effect is directed against the spring force.

Since the peripheral speed of the awning fabric 11 unwinding from the winding shaft 12 becomes smaller and smaller, the more If the cloth runs off the winding shaft, the feed speed of the edge strip 15 is also smaller, the closer it is approaches the front end 17b of the guide rails 17. Conversely, the peripheral speed of the take-up roller 43 becomes at the same angular velocity, the more the wind

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fertilize on pulling means 27 on the circumference of this take-up roll. The longitudinal speed of the lower run of the traction mechanism 27 therefore becomes larger. The resulting path differences between the upper run and the lower run of the However, traction means 27 can be compensated by the fact that the deflection roller 29 is against the action of the spring element 34 in Fig. 2 moved to the left.

If the awning fabric is then to be wound up on the winding shaft 12 again, the winding shaft is driven in the opposite direction by the drive Twisted sense. Here, the awning fabric is wound on the winding shaft 12 and pulls the edge strip 15 in Fig. 2 to the left, at the same time the drawstrings 27 unwind from the take-up rollers 41, since they are taken along by the edge strip will. Since the circumference of the winding shaft increases due to the increasing turns of the awning fabric, the The circumference of the take-up rolls is smaller as a result of the unwinding turns of the tension straps 27, the reverse now occurs initially Operation, i.e. the pulley moves to the free end 17b of the guide rail until the speeds of the align the running and the running run of the traction means 27 and then diverge again. During winding and unwinding depending on the circumferential proportions of the winding shaft and take-up roll and depending on the thickness of the awning fabric on the one hand and traction means on the other hand, the deflecting device 28 in the guide rail 17 emits a reciprocating movement. However, the traction means 27 and thus also the awning fabric 11 always remain taut.

In this context it should be noted that the spring, in particular a gas pressure spring, can be designed in such a way that it exerts an essentially constant force on the deflection device 28 exercises. There is also the possibility of coordinating the thickness ratios of covering means 11 on the one hand and Traction means 27 on the other hand and by coordinating the diameter of winding shaft 12 and winding roller 41, the winding speed

the speed of the traction means to increase more slowly than the unwinding speed of the awning fabric Ii.

Another embodiment of the invention is shown in FIG. 4, in which the guide rails 17 run approximately horizontally Have base part 46 and an approximately vertically extending angled part 47. In this embodiment, the is suitable, for example, for winter gardens or for balconies with a glass roof and front glazing, the spring elements 34 are and the deflection devices 28 for the traction means 27 housed in the angled parts 47 of the guide rails 17. The awning fabric 11 is guided over a deflection roller 48, which at the transition point 49 between the base part 46 and the angled part 47 of the guide rails 17 is arranged. There are reversing rollers in the guide rails in the same places 50 freely rotatably mounted, via which the traction means 27 are returned to the take-up rollers 43, which, as in the embodiment described above, are rotatably connected to the winding shaft 12 and when unwinding the awning fabric 11 wind up the traction means 27, which are continuously returned from the edge strip 15 around the deflection rollers 28 and the reversing rollers 50 are. In this embodiment, too, the awning fabric is always kept taut in any position, and here, too, only a single drive is required for unwinding and winding up the awning fabric 11.

The invention is not restricted to the exemplary embodiments shown, but several changes and additions are possible without departing from the scope of the invention. For example, in the case of wide awnings, more than two traction means can be used, which act on the edge strip. In this case it makes sense to design the necessary guide rails ¹ -nen for the spring elements and deflection rollers somewhat differently and to arrange them below the awning fabric at a distance from it. In addition, the necessary take-up rollers must then be arranged below the winding roller and connected to it.

instinctively coupled in such a way that they move in the same direction this and rotate at the same speed. A find reversible electric motor use; however, a hand crank is often sufficient.

Claims (5)

PATENT LAWYERS! DlPL-ING. BUSCHHOFF H DIPL.-ING. HENNICKE DIPL.- ING. VOLLBACH 5 COLOGNE / RH. KAISER-WILHELM-RING 24 RiB.-Nr. A-- G 85 24 022.2 <ÖLN <<"" please state Note: WEINOR Dieter Weiermann GmbH & Co. Mathias-Brüggen-Str. 110, 5000 Cologne 30 Title: Covering device Protection claims: 1. Covering device with a flexible, large-area covering means, in particular an awning fabric that is on a with A winding shaft equipped with a drive can be wound and unwound Ϊ
\ is and at its free edge one end of at least one flexible traction means is attached, which is guided around a deflection device arranged at a distance from the winding roll and with its other end of a rotating in the same direction as the winding shaft and non-rotatably with this connected winding device can be unwound and wound up, the deflection device being a deflection roller and spring means which compensate for the differences in the path of the covering means and the traction means when winding and unwinding in the same direction, characterized in that the deflection roller (29) with a bearing block (31) on the free End (33a) of a gas pressure spring (35) is arranged. 2. Apparatus according to claim 1, characterized in that the deflecting device (28) in one Guide rail (17) guided slowly and that the Gas pressure spring (34) is arranged in the guide rail (17). Il IfIItI I *
II 3. Apparatus according to claim 1 or 2, characterized in that the traction means (27) is a thin Steel band is one end (27a) at one with - The cover means (11) connected to the edge strip (15) and the sen other end (27b) is attached to a winding roller (43) serving as a winding device (41). 4. Device according to one of claims 1 to 3, d a - characterized by the fact that the I; guide rail (17) for the deflection device (28) in the at least one guide surface (20) for the edge strip (15) [s has. 5. Device according to one of claims 1 to 4, characterized in that the guide rail (17) has a base part (46) and at least one angled part (47) in which the The spring element (34) and the deflection device (28) for the traction means (27) are accommodated, and that at the transition point (49) a deflection roller (48) for the covering means between the base part (46) and the angled part (47) (11) and a reversing roller (50) for the traction means (27) are.