EP4086411A1 - Awning with height adjustment - Google Patents

Abstract

An awning has a height adjustment for the deflection point (14) of a tensioning cable (12) on at least one post (10) with a tensioning device (26) with length compensation, over which the tensioning cable (12) is guided, the end (42) of the Tensioning cable (12) is fixed at a fastening point. In order to reduce the influence of the height adjustment on the tension or extension length of the tension cable, it is provided that the attachment point is formed at a point that is at an identical distance from the deflection point (14) in all positions of the height adjustment.

Description

According to the preamble of claim 1, the invention relates to an awning with a height adjustment for the deflection point of a tensioning cable on at least one post with a tensioning device over which the tensioning cable is guided, the end of the tensioning cable being fixed at a fastening point.

Height adjustments for sun sails in the area of at least one of the posts between which the sail is stretched are known.

the DE 20 2008 042870 A1 shows a weather protection in which at least one support is designed to be height-adjustable in that the post is designed to be telescopic, the tension cable of the awning tensioned there being fixed to the ground at its end by a tension spring. As a result, the cable tension changes significantly when adjusting the height and the range of height adjustment is severely restricted.

the WO 2013/080234 A1 shows an awning in which the free end of the tensioning cable is hung on a holder which is height-adjustable on a rail on the post. The system does not show any tensioning device in the height adjustment area, so that no continuous adjustment of the extension length of the sail is possible.

the DE 10 2011 112523 A1 shows an awning with a single deflection roller that can be fixed at different heights on a post. A fastening of the end of the rope in the area of the post is not provided, nor is there a tensioning device with length compensation, which is provided here by a counter-pull system.

Solutions are also known in which the deflection pulley of the tensioning cable on the post is adjustable in height and the cable is routed to a tensioning device with length compensation, so that the extension length of the awning can be changed by simply turning the winding shaft. In known solutions, however, the height adjustment has an effect on the extension length, or the curtain can only be retracted at a certain height. In any case, the operating forces for the height adjustment in these known systems are very high in at least one direction, because the tensioning force of the tensioning cable on the deflection pulley generates a reaction force acting parallel to the post.

Finally is out of the WO 03033840A1 a system is known in which the tensioning of a canvas-like roof takes place via a height adjustment, ie the end of the cloth is pulled down and thereby tightened.

The object of the present invention is to improve an awning on at least one post with a tensioning device with a height adjustment in such a way that the mutual influence of the extended length of the sail and the height adjustment on the post is reduced.

According to the invention, the object is achieved by an awning of the type mentioned at the outset, in which the attachment point is formed at a point that is at an identical distance from the deflection point in all positions of the height adjustment.

The solution according to the invention offers the advantage that the supply of tensioning cable within the post and the tensioning device no longer changes or only changes to a minimal extent. As a result, the cable tension remains essentially constant and the extension length can be adjusted at all altitudes.

In a first preferred embodiment of the invention, it is provided that the height adjustment is formed by a multi-part post consisting of a base element anchored to the ground and a movable post element that can be adjusted for this purpose the attachment point, the deflection point and the tensioning device are arranged on the movable attachment element. Unlike the DE 20 2008 042870 A1 the rope is stretched by a tensioning device, but its end is not fixed to a stationary part, even if the split post is preferably designed to be telescopic in a similar or different way.

Another, particularly preferred embodiment of an awning provides that the height adjustment is formed by a height-adjustable carriage arranged on the post, on which a deflection roller is arranged at the deflection point of the tensioning cable and at a certain distance from this the attachment point for the end of the awning Tension cable is provided.

It has been shown that the adjustment of a carriage that is movably arranged on the post with the deflection roller that defines the deflection point for height adjustment can be realized in a structurally simpler manner than a telescoping post. There are also advantages in terms of the extent of the possible height adjustment.

In a preferred embodiment of the invention, the carriage is slidably mounted on a guide within the post and the tensioning cable is guided outwards through a slot in the post, or the carriage is slidably mounted on a guide on the outside of the post and the tether and the free end of the tether are diverted through an exit opening in the post to the carriage.

The guide direction is preferably essentially perpendicular to the clamping force, with a low-friction guide being able to keep the actuating force for the height adjustment low even with high clamping forces.

A further, particularly preferred embodiment of the sun sail according to the invention provides that the tensioning cable is guided in a first direction to the deflection roller and the end of the tensioning cable is guided in an opposite direction to the attachment point.

Since the tensioning cable, which is usually deflected via low-friction deflection pulleys, is under the same tension at all points, the measures described above can be used to compensate for the forces introduced into the system by the cable tension, see above that only the frictional forces of the guide of the slide have to be overcome for the height adjustment.

This considerable reduction in the operating forces results in the further advantage that, as a rule, additional aids to support the actuation can be dispensed with. Such aids to support the user when adjusting the height are, for example, reduction gears, such as pulley blocks, which extend the actuation path, or motorized supports. The omission of these simplifies not only the operation but also the design and manufacturing effort for the sun sail.

An exemplary, structurally simple to implement the measure described above in an awning can provide that a first exit deflection pulley for the tension cable and a second exit deflection pulley arranged coaxially thereto for the end of the tension cable are arranged at the outlet opening in the post, wherein the exit pulleys deflect the tether and the end of the tether down towards the carriage, and below the carriage another lower tether pulley is provided for the tether on the post, which rotates the end of the tether 180° to the carriage with the attachment point redirects back.

The carriage is preferably guided on the post in such a way that the carriage is displaceably mounted on a guide rail which extends parallel to the post below the outlet opening. With such a guide rail, the already mentioned, desired low friction can be implemented in a simple manner to further reduce the operating forces.

By compensating for the clamping forces, the height can be adjusted using a simple handle that is connected to the deflection roller of the deflection point or can be connected to it at different distances from the deflection roller of the deflection point.

There are different ways to set the handle relative to the carriage. The handle can be connected directly to the carriage of the deflection roller of the deflection point.

While it is possible here to use the guide of the carriage for the handle, it is preferable to mount the handle itself on the guide rail in a displaceable manner.

An embodiment of the invention is particularly preferred in which the handle is guided below the deflection roller of the deflection point in the guide rail separately from the carriage and with a first clamping device at the end of the tensioning cable, preferably in the area between the lower deflection roller and that of the outlet - Deflection pulley is fixed detachably.

This makes it possible to fix the handle at a desired distance from the deflection point, with the transmission of the actuating forces taking place via the tension cable itself. Also preferred is an embodiment of the invention in which the handle has a second clamping device, with the aid of which the handle can be clamped at the end of the tensioning cable in the area of the other strand, which is not clamped by the first clamping device, between the lower deflection roller and the handle and/or or can be clamped to the guide rail.

With the second clamping device, the height adjustment can be locked by clamping both strands of the tensioning cable or by clamping the handle in the guide rail.

In another preferred embodiment of the invention, the carriage has a third clamping device, by means of which it can be clamped to the guide rail and/or to the area of the end of the tensioning cable that extends between the exit deflection roller and the lower deflection roller .

A structurally preferred embodiment of the clamping devices can provide that they are formed by clamping screws, the shaft of which can be clamped with its end against the respective area of the end of the tensioning cable or against the guide rail.

However, other clamping devices are also possible, such as clamping levers that act on a cable bushing.

As an alternative to a handle to be pushed, it is preferred that a drive with a drive shaft is provided for the adjustment of the carriage, which is connected in a torsionally rigid manner to the lower deflection roller.

It has been shown that, depending on the system, the frictional forces to be overcome can be quite large, so that support from a suitable drive can be desirable, which reduces the operating forces through its transmission ratio or supports the adjustment with a motor.

It is preferably provided that the drive has a removable hand crank or an electric drive motor.

• Fig. 1 eine Schrägansicht eines Pfostens eines Sonnensegels mit einem Spannseil und einer Höhenverstellung der Auslenkstelle des Spannseils;
• Fig. 2 eine verkürzte Frontansicht der Höhenverstellung des Pfostens mit abgenommener Blende;
• Fig. 3 eine geschnittene Darstellung des oberen Kopfbereiches des Pfostens;
• Fig. 4 eine Schrägansicht des Kopfbereiches des Pfostens mit zeichnerisch weggelassener Führungsschiene der Höhenverstellung;
• Fig. 5 eine Schrägansicht eines Pfostens mit einer Handkurbel zur Höhenverstellung.

Further features, details and advantages of the invention result from the wording of the claims and from the exemplary embodiment described below with reference to the drawing. Show it:

• 1 an oblique view of a post of an awning with a tensioning cable and a height adjustment of the deflection point of the tensioning cable;
• 2 an abbreviated front view of the height adjustment of the post with the panel removed;
• 3 a sectional view of the upper head area of the post;
• 4 an oblique view of the head area of the post with graphically omitted guide rail of the height adjustment;
• figure 5 an oblique view of a post with a hand crank for height adjustment.

In 1 a post 10 of an awning is shown, as it is used at a guy end of the awning. A tension cable 12 is led out of a deflection device 16 at a deflection point 14 and is hung with a snap hook 18 for hanging in an eyelet in an end of the awning, which is generally triangular in shape. The position of the snap hook 18 shown corresponds to the extended end position of the awning, not shown, ie the tensioning cable 12 is pulled back with a maximum length of cable stored in the post. The rope supply is made possible by a pulley system 20 arranged inside the post 10 with upper and lower pulley wheels 22, 24 movable relative to one another, which at the same time has a tensioning device 26 (see FIG 3 ) forms with at least one helical spring 28 subjected to tension. This jig 22 with a supply of rope keeps the tension rope under tension in all extended positions and thus tightens the awning, the extension length of which can be changed by actuating a winding shaft, not shown.

The tension cable 12 is via a first deflection pulley 30 (see 3 ) is deflected at the deflection point 14 in a direction parallel to the post 10, the deflection roller 30 being mounted on a carriage 32 which is linearly movably guided in a guide rail 34 which is attached to the outside of the post 10. A cover 36 protects the idler pulley 30 and prevents the user from touching it.

The tension cable 12 is deflected via a first exit deflection pulley 38 at an opening 40 in the post into its interior and guided over the pulley system 20 . The pulley system of the exemplary embodiment shown is only to be understood as an example; in particular, several pulley systems can also be provided in series.

Irrespective of this, one end 42 of the tension cable 12 is connected via a second exit deflection roller 44 which is arranged coaxially with the first exit deflection roller 38 .

The end 42 of the tensioning cable is guided downwards by the second exit deflection roller 44 parallel to the tensioning cable 12 in the guide rail 34, being deflected upwards by 180° past the carriage 32 to a lower deflection roller 46 and from there to to an attachment point on the carriage 32 where it is fixedly connected to the carriage 32. The lower deflection roller 46 is rotatably mounted in a stationary manner on the guide rail 34 or directly on the post 10 .

This arrangement enables a height adjustment over the length of the guide rail 34, with the deflection of the end 42 of the tensioning cable 12 and its attachment from an opposite direction in relation to the feed of the tensioning cable to the first deflection roller 30 being able to achieve a cancellation of the tensioning force. So it is possible to adjust the height with little effort, which only has to overcome the frictional forces of the guide. The extension length of the tether does not change, or only minimally, when the height is adjusted, since the end of the tether 42 is always fed back or forth by a suitable length due to its attachment to the carriage.

Due to the low operating forces required for the height adjustment, this can be done with a simple handle 48, which is 1 is shown. This is also movably guided in the guide rail 34, with no direct connection being provided between the carriage 32 and the handle 48 in the exemplary embodiment shown. As an alternative, however, the handle 48 can also be configured together with the carriage 32 .

With such a design, however, the possibility of adjusting the height of the handle 32 independently of the carriage 32, as implemented in the exemplary embodiment shown, is then eliminated. The handle 48 is locked relative to the carriage 32 by means of one of two clamping devices 50, 52 which can be clamped by means of two grub screws against a respective strand 58, 60 of the end 42 of the tensioning cable 12.

It is possible to provide only one of these two clamping devices 50, 52, since it is sufficient for locking the handle 48 relative to the carriage 32 to adjust the height of the deflection point 14 to clamp the handle on a strand, while the additional clamping relative to the opposing strand of the carriage 32 and the handle 48 can be clamped at a certain height.

If both clamping devices 50, 52 are released, the handle 48 can be moved freely to the carriage 32, although the adjustment path of the height adjustment can be restricted if the distance selected is too large.

A first clamping device 50 acts with the shank of the grub screw on strand 58 of tensioning cable end 12, which runs between lower deflection roller 46 and the attachment point of tensioning cable end 42 on carriage 32, while the second clamping device 52 acts on strand 60 of tensioning cable end 42 running in the opposite direction between the lower deflection roller 46 and the second exit deflection roller 44 acts.

Alternatively, one of the two clamping devices can also interact with the guide rail 34 in order to lock the handle 48 in place.

The carriage 32 can also have a third clamping device (not shown), which either acts on the run 60 between the lower deflection roller 46 and the second exit deflection roller 44 or can be clamped against the guide rail 34 .

As an alternative to a simple handle, a hand crank 148 can be provided to reduce the operating forces. Such a solution is in figure 5 shown. Instead of the handle 48 that can be moved along the post 10, a hand crank 148 is provided, which is connected to the lower deflection roller 46 in a torsionally rigid manner with its crankshaft, for example by means of a polygonal plug connection. The translation of the crank as such already ensures the desired reduction in the operating forces, but if necessary a gear stage can also be interposed.

If necessary, the crank can have a detent, by means of which it can be blocked in the direction of rotation. As a rule, however, this is not necessary due to the sufficiently high frictional forces in the system.

The crank can be detachable.

The use of an electric drive motor is also readily possible if the ease of use is to be further improved.

The invention is not limited to one of the embodiments described above, but can be modified in many ways.

All of the features and advantages resulting from the claims and the description, including structural details, spatial arrangements and method steps, can be essential to the invention both on their own and in the most varied of combinations.

Reference List

10

Pole of the sun sail

12

tension rope

14

deflection point

16

deflection device

18

snap hook

20

pulley system

22, 24

pulley wheels

26

clamping device

28

coil spring

30

First pulley

32

Sleds

34

guide rail

36

cover

38

First exit pulley

40

post opening

42

guy rope end

44

Second exit pulley

46

Lower pulley

48

handle

50

First clamping device

52

Second clamping device

58, 60

twisting of the end of the tension cable

148

hand crank

Claims (15)

Awning with a height adjustment for the deflection point (14) of a tensioning cable (12) on at least one post (10) with a tensioning device (26) with length compensation, over which the tensioning cable (12) is guided, the end (42) of the tensioning cable (12) is fixed at an attachment point, characterized in that the attachment point is formed at a point which is at an identical distance from the deflection point (14) in all positions of the height adjustment. Awning according to Claim 1, characterized in that the height adjustment is formed by a multi-part post consisting of a base element anchored to the ground and a movable post element adjustable thereto, the fastening point, the deflection point and the tensioning device being arranged on the movable fastening element. Awning according to Claim 2, characterized in that the divided post is designed to be telescopic. Awning according to Claim 1, characterized in that the height adjustment is formed by a height-adjustable carriage (32) arranged on the post (12) on which a deflection roller (30) is arranged at the deflection point (14) of the tensioning cable (12). and at a certain distance therefrom the attachment point for the end (42) of the tension cable is provided. Awning according to Claim 4, characterized in that the carriage is slidably mounted on a guide within the post and the tensioning cable is guided outwards through a slot in the post, or that the carriage (32) on a guide (34) on the outside of the Post (10) is displaceably mounted and the tensioning cable (12) and the end (42) of the tensioning cable (12) are deflected through an outlet opening (40) in the post (10) to the carriage (32). Sun sail according to Claim 4 or 5, characterized in that the tensioning cable (12) is guided in a first direction to the deflection roller (30) on the carriage (32) and the end (42) of the tensioning cable (12) in an opposite direction is guided to the attachment point on the carriage (32). Awning according to Claim 6, characterized in that at the exit opening (40) in the post (10) there is a first exit deflection roller (38) for the tensioning cable (12) and a second exit deflection roller (44) arranged coaxially thereto for the end (42) of the tension cable (12), the exit deflection pulleys (38, 44) deflecting the tension cable (12) and the end (42) of the tension cable (12) downwards towards the carriage (32), and below of the carriage (32), a further lower deflection roller (46) for the end (42) of the tensioning cable (12) is provided on the post (10), which rotates the end (42) of the tensioning cable (12) by 180° to the carriage (32 ) deflects back to the attachment point. Awning according to one of Claims 4 to 7, characterized in that the carriage (32) is displaceably mounted on a guide rail (34) which extends parallel to the post (12) below the outlet opening (40). Sun sail according to one of Claims 4 to 8, characterized in that the height adjustment has a handle (48) which is connected to the deflection roller (30) of the deflection point (14) or is at different distances from the deflection roller (30) of the deflection point ( 14) can be connected to this. Sun sail according to Claim 9, characterized in that the handle (48) is connected to the carriage (32) of the deflection roller (30) of the deflection point (14) and is preferably movably mounted on the guide rail (34). Awning according to Claims 7, 8 and 10, characterized in that the handle (48) is guided below the deflection roller (30) of the deflection point (14) in the guide rail (34) separately from the carriage (32) and is provided with a first clamping device ( 50) is releasably fixed to the end (42) of the tensioning cable (12), preferably in the area between the lower deflection roller (46) and the second exit deflection roller (44), and preferably the handle (48) via a second clamping device (52 ) with the help of which the handle (48) at the end (42) of the tensioning cable (12) in the region of the other strand not clamped by the first clamping device between the lower deflection roller (46) and the handle (48) and/ or can be clamped with the guide rail (34). Sun sail according to one of Claims 8 to 11, characterized in that the carriage (32) has a third clamping device, by means of which it can be clamped to the guide rail and/or to the region of the end (42) of the tensioning cable which is between the second exit deflection roller (44) and the lower deflection roller (46). Sun sail according to Claim 11 or 12, characterized in that the clamping devices (50, 52) are formed by clamping screws, the shaft of which can be clamped with its end against the respective region of the end (42) of the tensioning cable (12) or against the guide rail (34). is. Sun sail according to Claims 7 and 8, characterized in that a drive with a drive shaft which is connected in a torsionally rigid manner to the lower deflection roller (46) is provided for adjusting the carriage (36). Awning according to Claim 14, characterized in that the drive has a removable hand crank (148) or an electric drive motor.

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