EP1319772A1 - Positive return awning with one sided length compensating device - Google Patents

Abstract

The counter-pull awning has an awning winding shaft (11) with a keyed disk (17) at one end for the pull cable (45). The disk (24) at the other end of the shaft for the pull cable has an elastic rotation against the shaft through a coil spring (31), so that its rotation against the shaft can be advanced or retarded. The pull cable has an unbroken run through or at the drop rail (8), and past it, so that it can float in relation to the cable. A single winding compensation unit (23) compensates the wound diameters of the cable on the disks and the ball (12) formed on the shaft by the wound awning fabric (5) and compensate for their lengths, and operates between the sprung winding disk and the winding shaft.

Description

If awnings are to be used, large areas To stretch, the awning has in the extended Usually a very low inclination towards the horizontal. This allows the weight of the drop rail not generate sufficient force to pull the Pull the awning cover away from the winding shaft or in the open position Keep condition taut. Around the awning track anyway to be able to stretch and then also tight hold, so-called counter-pulling devices are used.

The counter-pulling devices known from the prior art basically all have the same structure. To the Counter pull device include two pulleys or belt pulleys. Both rope or belt discs are opposite the Winding shaft rotatably supported. From each rope or belt disc guides an associated traction device along the guide rail around a redirection point and on again Slightly back towards the winding shaft. That from the end of the traction mechanism that lies away from the rope or belt disc is anchored to or in the drop rail.

When the awning is extended, both traction devices, each individually, on the associated rope or belt disc coiled up while the awning web by the winding shaft is handled. Thus the diameter changes the bale that the wrapped awning fabric forms, in the opposite direction to the winding of the traction device on the associated disk generated. As a result, the pro Rotation angle wound amount of traction device depending on Wrapping condition larger or smaller than the amount of awning sheet at the same angle. Without compensation devices at least intermediate states would occur in which the awning fabric sags freely or conditions in which Awning cover is stretched excessively.

According to the state of the art are therefore for everyone Traction devices have their own length compensation devices. The result is that each equalizer is on its own must be tensioned, which increases the assembly effort considerably. In addition, the compensation device must be possible be curious to see the awning train pulling largely excluded.

Based on this, it is an object of the invention To create a retractable awning, in which the assembly effort the compensation device caused is reduced.

According to the invention, this object is achieved by the counter-pull awning solved with the features of claim 1.

With the new retractable awning, as with the state of the Technology usual, a stationary rotatable winding shaft intended. The winding shaft is used to hold the awning track with retracted awning.

There is one at the free end of the awning track Fall rail that runs in two main ways parallel guide rails is led.

The retraction device of the retraction awning includes two winding drums, each of which is at least geared is coupled to the winding shaft. Between the two winding drums a traction device extends to the drop rail is attached so that it is opposite the drop rail largely freely movable in its longitudinal direction while it is in the direction parallel to the longitudinal extent exert a force on the guide rails on the fall rail can strive to drop the drop rail from the winding shaft to move away.

The retraction device only has one Balancer. As a result, the Retracting and extending the awning rail relative to the traction moved to the drop rail in the longitudinal direction. Due to the use of a single winder is the stroke of the traction device, for example one end of the drop rail can be observed, twice as much as big as the stroke one of the two traction means one Counter-pulling device performed according to the prior art, if the traction device has a Pulley and spring device is anchored.

Due to the free longitudinal mobility of the traction device compared to the drop rail, it is automatically even Force distribution generated on both ends of the drop rail. There is no need to vote when installing the new retractable awning of two winding compensation devices on top of each other. This results in a significant simplification of assembly and in particular assembly errors are avoided. Manufacturer side needs only a compensation device biased to be delivered when the arrangement is biased becomes.

Repairs to the retractable awning are also possible correspondingly easier.

A very compact and simple design is reached when one of the winding drums rotates sits on the winding shaft while the other winding drum via the compensation device with the winding shaft is coupled. In the case of a tubular winding shaft the compensation device housed in the winding shaft his.

In this case too, the design is simplified Design compared to the state of the art because continuous bearing shafts and a tubular configuration the motor shaft or the use of double pipes in the area of the drive motor can be avoided.

Very simple constructive relationships result, if one of the winding drums is rigid and coaxial with the winding shaft is attached.

The winding compensation device is the simplest Trap from a coil spring that easily into the Fits in the winding shaft. There are practically none Space problems, because the coil spring can easily move a considerable length into the winding shaft extend so that an almost arbitrarily flat spring characteristic can be generated. The steepness of the spring characteristic depends on the number of turns of the coil spring. The more The coil spring has turns, the flatter it is Spring characteristic.

The second winding drum, which over the winding compensation device is coupled to the winding shaft, can rotatably seated on a bearing shaft, which inside the Winding shaft protrudes. The inner end of the bearing shaft is rotatably deposited there, while the outer end the winding shaft is mounted on the bearing shaft.

If the guide rails have one or more chambers contain, the traction device can be protected by these chambers run. In particular, the division of the previous and the returning run of the traction device in each guide rail in different chambers the advantage that the Do not rub parts of the traction mechanism against each other.

A well protected guidance of the traction device in the area The fall rail is reached when the fall rail itself is tubular. The winding shaft itself can be in the usual way in tubular motors or angular gear Rotations.

In addition, developments of the invention are the subject of subclaims. Such combinations of features are also intended are considered to be claimed on the no express embodiment is directed.

Fig. 1

eine auf einem Glasvorbau aufgeständerte Gegen- zugmarkise in einer perspektivischen Darstellung,

Fig. 2

eine Prinzipdarstellung der Kinematik der neuen Gegenzugmarkise, mit teilweise aufgebrochener Wickelwelle,

Fig. 3

dasjenige Ende der Wickelwelle nach Figur 1, mit der Wickelausgleichseinrichtung, in einer ver- größerten perspektivischen Schnittdarstellung und

Fig. 4

den Einlauf des Zugmittels in die Fallschiene, in einer perspektivischen Schnittdarstellung.

In the drawing, an embodiment of the object of the invention is shown. Show it:

Fig. 1

a counter pull awning on a glass stem in a perspective view,

Fig. 2

a schematic representation of the kinematics of the new counter-pull awning, with the winding shaft partially broken,

Fig. 3

that end of the winding shaft according to FIG. 1, with the winding compensation device, in an enlarged perspective sectional view and

Fig. 4

the entry of the traction device into the drop rail, in a perspective sectional view.

Figure 1 shows a house facade 1 with a glass porch 2, which has a glass roof 3. Is above the glass roof 3 a retractable awning 4 arranged around the interior of the glass stem 2 to be able to shade. To the retractable awning 4 include an awning track 5, two side guide rails 6 and 7, between which a drop rail 8 ends is guided and on which the awning track 5 is attached. Parallel to the drop rail 8 is immediately next to the Building facade 1, a housing 9 in which parts of the Awning mechanism are housed.

The structure and drive of the counter-pull awning 4 are in Figure 2 in a highly schematic and not Illustrated scale representation of the principle. The awning train is wide for reasons of clarity greatly narrowed and broken off to the essential To be able to show parts of the arrangement according to the invention.

The counter-pull awning 4 has a continuous tubular Winding shaft 11 on, with an edge, the awning 5 is attached to the wound up the winding shaft 11 forms a bale 12.

The winding shaft 11 is at one end by a Tubular motor trained gear motor 13 driven, the Provide housing with an outwardly projecting pin 14 is, which ends in a square pin 14. With help this square pin 15 is the tubular motor 13 rotatably in attached a wall bracket, not shown. The inside End of the tubular motor 13 rotatably carries a coupling disc 16, on the with a screw or not shown the winding shaft 11 is fastened to a rivet.

At the end of the winding shaft 11 in which the gear motor 13 is seated, rotatably on the winding shaft 11 one Winding disc 17, which has a cylindrical winding surface 18th forms. The winding surface 18 is flanged on both sides 19 and 21 limited.

The winding disk 17 contains in its central bore a bearing bush 22 through the bore of the pin 14 passes.

The other end of the winding shaft 11 is via a winding compensation device 23 with a second winding disc 24 torsionally flexible coupled.

One belongs to the winding compensation device 23 through cylindrical bearing shaft 25 which is coaxial to the Winding shaft 11 runs. The bearing shaft 25 leads through a matching hole in the winding disc 24, which is rotationally fixed, for example by means of a spring pin, not shown the bearing shaft 25 is connected. The bearing shaft 25 is a short distance over the winding disc 24 and forms the second journal for supporting the winding shaft 11 in a second wall bracket, not shown.

Rotatable about the bearing shaft 25 in the winding shaft 11 store, are two bearing discs 26 and 27 in the winding shaft 11 attached. The bearing disc 26 is located immediately outside and contains a bore 27 through which the bearing shaft 25 passes freely rotatable. The bearing disc 27 is located further inside and also contains a bore 29 um to mount the inner end of the bearing shaft 25 rotatably.

The winding disk 24 has the same basic principle Structure, like the winding disc 17, which is why whose winding surface and flanges have the same reference numerals are used.

The rotary coupling between the bearing shaft 25 and thus the winding disc 24 and the winding shaft 11 is done by means of a coil spring 31, the bearing shaft 25 coaxial surrounds. The type of anchoring of the coil spring 31 is in the enlarged detail of FIG detect. The coil spring 31 forms one in the axial direction extending end 32, which in a bore 33rd the bearing disc 26 is inserted and there no further anchoring device shown is anchored inseparably. In this way, the relevant end of the coil spring 31 rotatably coupled to the winding shaft 11.

The connecting links for non-rotatably securing the bearing disc 26 are not shown.

Immediately next to the inner bearing plate 27 the bearing shaft 25 contains a longitudinal groove 34 in which one inwardly angled end 35 of the coil spring 31 plugged. The end 35 connects the coil spring 31 in a rotationally fixed manner with the bearing shaft 25.

The two guide rails 6 and 7 are sections in Figure 2 and shown in perspective. How to recognize is, both contain at least one in the longitudinal direction Groove or chamber 36, which is located on a slot 37 opens to the outside. The two slots 37 are on top of each other too directed and open towards each other. Each of the two Guide rails 6 or 7 is near the relevant one Winding disc 17 or 24 attached so that the groove 36 approximately tangentially with the relevant winding surface 18 flees.

At the end remote from the winding shaft 11, which in Figure 2, not shown, is on or in either of the two Guide rails 6 or 7 a pulley 38 or 39 rotatably mounted.

Between the two guide rails 6 and 7 is the Fall rail 8 out.

In Figure 4, the end facing the viewer is the Fall rail 8 enlarged and broken open to the To be able to recognize details better. The other end is mirror image. The description given below applies also for the other fall rail end.

The drop rail 8 has a tube 41, which on both Each end with a fixed locking disc 42 is closed. Coaxial with the closure disk 42 there is a tubular journal 43 on which one Roller 44 sits on the edges of the subject Slot 37 runs. A precise description of the storage is given, for example, in DE 101 50 693.7.

To drive the winding shaft 11 with the drop rail 8, in addition to the awning track 5, a single continuous, preferably uncut Traction means 45 available. The traction means 45 is linear and flexible but almost inextensible. It has the following course:

The traction means 45 is at one end on the winding disk 17 attached. It leads tangentially from here in the groove 36 of the guide rail 6 to the Deflection roller 38. The traction means 45 is on the deflection roller 38 deflected by 180 ° and also runs back in the groove 36 in the direction of the winding shaft 11 up to the bearing journal 43. At this point the traction device 45 passes through a deflecting bush widening outwards in a funnel shape the inside of the tubular drop rail 8. The deflection bushing is designed to work with the material the traction means 45 a very low friction and a very shows little wear. The introduction of the traction device 45 in the fall rail 8 can be seen in detail in Figure 4.

The traction means 45 extends uncut and in not anchored anywhere else by the drop rail 8 through to the unrecognizable opposite Bearing journal, which corresponds structurally to the bearing journal 43, to step out of the drop rail 8 and into the guide groove 36 to change the guide rail 7. As soon as the traction means 45 lies in the guide rail 7 it from the bearing pin to the deflection roller 39 and thus too the distal end of this guide rail 7. On the roller 39, the traction device is deflected by 180 ° to get out of there through the groove 36 of the guide rail 7 to the winding disc 24 to extend at the other end of the traction means 45th is attached.

After assembling the counter-pull awning 4 is the awning track 5 completely wound on the winding shaft 11. The fall rail 8 is in the immediate vicinity of the bale 12. There are only a few of the traction means 45 at both ends Rounds, 1 or 2 rounds, on each of the two winding discs 17 and 24 wound up. Both winding disks 17 and 24 carry about the same number of turns. The coil spring 31, from the perspective of the winding disc 24 like a Spring motor acts, a predetermined amount is drawn. Around to achieve this, for example after hanging up of the traction means 45 on the two winding disks 17 and 21 and after threading into the corresponding parts, for example the bearing shaft 25 in the sense of winding up the Coil spring 31 rotated until the desired preload is reached. Only then is through pens or the like the non-rotatable connection between the position shaft 25 and the Winding disc 24 made.

Since the winding shaft 11 on the braking effect of the gear motor 13, which in turn rotatably on the wall bracket is attached, is braked, is quasi the interior End of the coil spring 31 also anchored in a rotationally fixed manner. The coil spring 31 strives to the winding disc 24 in Meaning of winding the traction means 45 on the winding disc 24 to turn. So that's it Traction means 45 under a corresponding bias, the exclusively from one coil spring 31, i.e. one single winding compensation device 23 is applied.

Except for minor friction losses thus the same tensile forces at both ends of the drop rail 8 between the deflection roller 38 and the pin 43, on the one hand and between the guide roller 39 and the other journal the fall rail 8 on the other.

The awning track 5 is consequently on both longitudinal edges kept under tension with the same force, though only a single pretensioner 23 is present.

If the awning track 5 is to be extended, the gear motor 13 with a corresponding direction of rotation started. This At the same time, the direction of rotation causes the traction means 45 wound on both winding disks 17 and 24 from the end becomes.

For example, since the winding diameter of the bale 12 is initially larger than the winding diameter of the turns of the traction device 45 on the two winding disks 17 and 24 form, is initially per revolution of the winding shaft 11 more awning fabric than the end of each traction device 45 wound on each of the two winding disks 17 and 45 becomes. The length difference would be without the coil spring 31 cause the traction mechanism 45 to become loose. There however, the coil spring 31 in the sense of winding the Is tensioned 45, this difference in length caught by the winding disc 24, which is relatively can rotate to the winding shaft 11, in relation to this in a leading direction is rotated by the spring 31. As a result, the additional length of traction device 45 added. This relative rotation between the winding shaft 11 and the winding disc occurs on the side of the winding disc 17 because of their rigid connection to the winding shaft 11 not on. The concept on this page Excess of traction means 45 is also from the Winding disk 24 added, for which purpose the traction means 45 moved accordingly through the drop rail 8.

The fall rail 8 is as it were floating on the Traction means 45 arranged so that the traction means 45 is indeed can move freely in the longitudinal direction, on the other hand but generate a force in the direction away from the winding shaft 11 can.

From a certain awning position, the diameter of the bale 12 become smaller than the winding diameter, the traction means 45 on one or the two winding disks 17 and 24 forms. From here the winding disc must 24 start against the rotation of the winding shaft 11 to lag. The traction means 45 is in the opposite Direction as described above through the drop rail 8 slide through. In any position however, the condition reached that at both ends of the Fall rail 8 attack the same tensile forces that strives are to pull the drop rail 8 away from the winding shaft 6.

With the help of the floating connection between the Fall rail 8 and the traction device 5 opens up the possibility the counter-pulling device with a single winding compensation device 23 to be provided. As a result, this is no longer applicable the need for preload as in the state of the Technology usual on two compensation devices if possible regulate evenly.

There is also no longer a need to turn the two winding disks 17 and 24 with each other through the winding shaft 11 to couple with each other, as is the case with State of the art is necessary if only a single balancing spring should be used.

With regard to the sliding movement of the traction means the bearing arrangement 43 is not the new arrangement less favorable than counter-pulling devices, in which the winding compensation in the drop rail 8.

A counter-pull awning (4) has a winding shaft, the one rigid with a winding disc for the traction device connected is. The other winding disc for the traction device at the other end of the winding shaft is via a coil spring torsionally elastic connected to the winding shaft so that this winding disc against the rotation of the winding shaft can lead or lag. The traction device of the retractable awning runs uncut through or past the drop rail 8, which are thus arranged floating with respect to the traction means is.

Claims (21)

Retractable awning (4) with a stationary rotatable winding shaft (11), with an awning track (4) attached to the winding shaft (11) with an edge (), with a drop rail (8) attached to the awning track (4), with at least two guide rails (6, 7) which run at least approximately radially with respect to the winding shaft (11), by means of which the drop rail (8) is mounted and guided and each of which has a deflection device (38) at a point away from the winding shaft (11) , 39) has with a first winding drum (17), which is coupled inelastic to the winding shaft (11), with a second winding drum (24) which is coupled to the winding shaft (11), with a line-shaped, essentially inextensible, flexible traction means (45) which is fastened to the first winding drum (17), from there along the guide rail (6) adjacent to the first winding drum (17) to the associated deflection point (38) the deflection point (38) runs to the end of the drop rail (8) adjacent to the guide rail (6), extends at least a part along the drop rail (8), from the other end of the drop rail (8) along that of the second winding drum (24 ) runs adjacent guide rail (7) to the deflection point (39) there and extends from there to the second winding drum (24),
the traction means (45) being connected to the drop rail (8) in such a way that the traction means (45) can be freely displaced at least to a certain extent relative to the fall rail (8), but a force in the direction parallel to the guide rails (6, 7) can transmit, and with a single winding compensation device (23) for compensating the winding diameter of the traction means (45) on the winding drums (17,24) and the bale (12) formed by the awning track (5) on the winding shaft (11). Counter-pull awning according to claim 1, characterized in that the winding compensation device (23) is arranged in a geared manner between the second winding drum (24) and the winding shaft (11). Counter-tension awning according to claim 1, characterized in that the first and / or the second winding drum (17.24) is formed by a disc (), the winding surface (18) of which is delimited by two flanges (19,21). A counter-tension awning according to claim 1, characterized in that the first winding drum (17) is arranged coaxially with the winding shaft (11) and is rigidly attached to the latter. Counter-pull awning according to claim 1, characterized in that the second winding drum (24) is arranged coaxially to the winding shaft (11). A counter-tension awning according to claim 1, characterized in that the winding compensation device (23) has a spring (31), preferably a helical spring (). Counter-tension awning according to claim 1, characterized in that the winding shaft (11) is tubular. Counter-pull awning according to claim 7, characterized in that the second winding drum (24) is non-rotatably seated on a bearing shaft (25) which projects into the interior of the winding shaft (11), and that the inner end () of the bearing shaft (25) inside the winding shaft (11) is rotatably mounted. Counter-pull awning according to Claim 1, characterized in that the winding compensation device (23) is arranged in a geared manner between the bearing shaft (25) and the winding shaft (11). Counter-pull awning according to claim 8, characterized in that the winding compensation device (23) is arranged in the form of a helical spring (31) coaxially to the bearing shaft (25). Counter-tension awning according to claim 10, characterized in that one end () of the helical spring (31) is anchored to an external bearing disc (28) by means of which the winding shaft (11) is rotatably mounted on the bearing shaft (25), and in that the other End of the coil spring (31) is anchored to the bearing shaft (25). Counter-tension awning according to claim 1, characterized in that the traction means (45) runs through one or more chambers (36) present in the respective guide rail (6, 7), one of the chambers (36) extending over the length of the guide rail (6 , 7) continuous slot (37) is accessible from the outside in such a way that the traction means (45) emerges from the relevant chamber (36) through the slot (37). Counter-pull awning according to claim 1, characterized in that the drop rail (8) is tubular. A counter-tension awning according to claim 1, characterized in that the traction means (45) runs through the drop rail (8). Counter-pull awning according to Claim 1, characterized in that each deflection point () is formed by a deflection roller (38, 39) which is arranged at least in the vicinity of that end () of the respective guide rail (6, 7) that the winding shaft (11 ) away. A counter-tension awning according to claim 1, characterized in that the traction means (45) can be freely moved in the direction along the drop rail (8) at least over a length which corresponds to the required winding compensation () which the traction means (45) winds between the complete and the completely developed blind sheet (5) is required. A counter-tension awning according to claim 1, characterized in that a drive device (13) is associated with the winding shaft (11). Counter-pull awning according to claim 17, characterized in that the drive device (13) is formed by a geared motor () accommodated in the winding shaft (8). Counter-pull awning according to claim 1, characterized in that the drop rail (8) is provided with guide devices (44), with the aid of which the drop rail (8) is guided along the guide rails (6, 7). Counter-pull awning according to claim 19, characterized in that the drop rail (8) is provided at the end with the guide device (44). Counter-pull awning according to Claim 1, characterized in that the guide rails (6, 7) are designed in mirror image.

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