SHADING DEVICE

Description

[0001] The invention relates to a shading device with a fabric that can be stretched in a fabric plane and is connected to a drop rod, wherein the drop rod is displaceably guided in guides, wherein the guides run horizontally or with an inclination of a maximum of 30° relative to a horizontal, and with at least one locking device that has an adjustable stop part that can be adjusted between a stop position in which it can be brought into contact with the drop rod and a release position.

[0002] A shading device within the meaning of the invention can be, for example, a conservatory shading device, a pergola shading device, or a so-called horizontal awning. The following assumes a conservatory shading device as an example, but the invention is not limited to this.

[0003] A conventional conservatory has a frame construction, particularly made of metal profiles or wooden beams, with the wall and roof surfaces partially or preferably completely filled with glass or other surface elements. On top of the conservatory, several guide rails are mounted, arranged parallel to one another at a distance, in which a strip-shaped drop rod can be moved in the longitudinal or axial direction of the guide rails. The drop rod is connected to a front edge of a fabric that can be wound onto and unwound from a fabric shaft. By means of a drive device, the drop rod can be moved along the guide rails, whereby the fabric is unwound from the fabric shaft and stretched out. To retract the fabric, the fabric shaft is rotated, which winds up and retracts the fabric and moves the drop rod along the guide rails.

[0004] Many users want the fabric to be kept taut rather than sagging. For this purpose, manually adjustable stops are commonly provided on the guide rails. When a user has moved the stops into the stop position, the stops impede the movement of the drop rod along the guide rails, with the drop rod resting against the stops. If a further retraction movement is applied to the fabric by rotating the fabric shaft, the drop rod cannot follow this movement due to its contact with the stops, so the fabric is kept taut. However, manually adjusting these stops is very annoying and inconvenient for the user.

[0005] EP 2 722 460 A1 discloses a pergola shading system in which the drop rod can be locked relative to the guide rails by means of electrically adjustable locking pawls. Such a design is structurally complex and expensive.

[0006] EP 3 181 800 A1 describes a shading device in which a fixed stop is attached to each guide rail. The drop rod carries a spring-loaded stop pin which, when the drop rod is extended, deflects against the stop and then engages behind it, allowing the fabric to be tensioned. To retract the fabric and drop rod, the drop rod is first extended further until the stop pin engages behind a pivoting ramp element. When the drop rod is retracted, this element engages against the stop, forming a ramp surface, allowing the spring-loaded stop pin to deflect against the stop and allow the drop rod to be retracted.The disadvantage of this design is that the stop is permanently in the path of movement of the drop bar and that movable and adjustable parts must be provided on both the drop bar and the guide rails in order to be able to avoid the stop, which makes the construction complex.

[0007] All of the aforementioned prior art designs have in common that the locking device is firmly integrated into the interior of the guide rails, and that the drop rod engages with the locking device at its axial end faces. This has the disadvantage that the relative position between the guides and the drop rod is structurally predetermined, leaving little room for spatial and / or structural adjustments. In particular, it is not possible to allow the fabric to protrude laterally beyond the guides or to retract the guides inward relative to the lateral ends of the fabric.

[0008] The invention is based on the object of creating a shading device of the type mentioned, which only has constructive freedom for the relative position between the drop rod and the guides.

[0009] This object is achieved according to the invention by a shading device having the features of claim 1. It is provided that the locking device is arranged below the fabric plane and below the projection rod and has an adjustably mounted switching part which can be adjusted by means of the projection rod, the adjustment movement of which can be transmitted by means of a transmission device to the stop part for adjustment thereof between the stop position and the release position.

[0010] According to the invention, it is provided in a known manner that the adjustable stop part can be adjusted between the stop position, in which it can be brought into contact with the drop-out rod, and the release position. The adjustment of the stop part between the stop position and the release position is effected by the drop-out rod. When extended, the drop-out rod comes into contact with the adjustably mounted switching part and exerts a force on the switching part, whereby the switching part is adjusted. This adjustment movement of the switching part is transmitted to the stop part by means of a transmission device, which can be a lever or a rocker or a rod or other gear, whereby the stop part is adjusted.

[0011] Since, according to the invention, the locking device is arranged below the fabric plane and below the drop rod, or the drop rod moves over the locking device during its extension movement, the locking device can preferably be arranged on the inside of the guides or even attached to a separate support structure, as long as the drop rod moves over the locking device during its extension movement. In particular, due to the design according to the invention, it can also be provided that the drop rod protrudes laterally beyond the associated guide at at least one of its axial ends.

[0012] According to the invention, the switching part, which can be a pin or a lever, can be brought into contact with a control part formed on the drop-out rod. For this purpose, the drop-out rod can carry the preferably block-like control part, on which a control cam or surface is formed. When the drop-out rod comes into contact with the switching part, it exerts a compressive force on the switching part, thereby adjusting the switching part.

[0013] Preferably, the control part and, if applicable, also the control cam or surface are arranged on the underside of the drop rod. Furthermore, the control part can be arranged at a distance from the axial end of the drop rod and, in particular, be attached to the drop rod on its underside.

[0014] When the drop rod is extended and the fabric is tensioned, the drop rod is moved in an extension direction. Preferably, the switching part and the stop rod are arranged relative to one another such that the switching part is located downstream of the stop part in the extension direction of the drop rod. Thus, when extended, the drop rod initially moves past the stop part without coming into contact with it. The drop rod then hits the switching part behind it, comes into contact with it and adjusts it. Due to the adjustment of the switching part, the stop part is adjusted to its stop position so that the drop rod comes into contact with the stop part during its opposite retraction movement and the fabric is tensioned with further rotation of the fabric shaft.

[0015] In order to bring the locking device and the stop part back into the release position, the drop rod is first moved in the extension direction from its position in contact with the stop part until it comes into contact with the switching part again with its control part or its control cam and adjusts this again, whereby the stop part is returned to its release position so that the drop rod is no longer hindered by the stop part during its subsequent opposite retraction movement.

[0016] The stop part and the switching part are each mounted for adjustment. The switching part can be mounted for displacement, preferably linear displacement and / or pivoting. The switching part can also be mounted for displacement, preferably linear displacement and / or pivoting.

[0017] The shading device typically has several guides, which can be spaced-apart, parallel linear guides, for example in the form of straight guide rails. At least one of the guides carries the aforementioned locking device. Preferably, several guides have a aforementioned locking device, and in particular, each guide has a corresponding locking device.

[0018] In a further development of the invention, it can be provided that one guide or several guides or all guides have several locking devices arranged at an axial distance in the longitudinal direction of the guide. The several locking devices can be structurally identical and / or functionally equivalent. However, it is also possible to use different locking devices. The axial distance refers to the longitudinal extent of the guides and thus the extension and retraction movement of the drop rod. In this way, it is possible to keep the drop rod under tension not only when the fabric is fully extended, but also in an intermediate state.

[0019] In a further development of the invention, the locking device is designed as a separate structural unit comprising a support member on which the stop member, the switching member, and the transmission device are mounted. The structural unit is detachably attached to the guide and can be removed from it and reinstalled at another location on the guide. This allows the user to individually select the position of the locking device and thus determine the position of the drop bar relative to the guides and the tensioned state of the fabric.

[0020] Preferably, the assembly also comprises a housing in which the stop part, the switching part and the transmission device are accommodated, so that these components and assemblies are protected from external influences.

[0021] The support part can be optionally attached to various sections of the guide or guides. A clamping device or a screw device can be provided for this detachable fastening of the support part and thus the assembly to the guide. The support part or assembly can be secured to the guide in a force-fitting and / or form-fitting manner.

[0022] When the dropout rod is moved, it engages the switching element and adjusts it. Frictional forces arise between the dropout rod and the switching element. To minimize these frictional forces, the switching element can have a rotatably mounted roller that engages the control cam of the dropout rod and rolls along it. Alternatively, the switching element can have a slider, i.e., in particular, a component made of a material with a low coefficient of friction.

[0023] The switching part is preferably displaced linearly, with this movement being transmitted via the transmission device to the stop part, which adjusts the latter. A so-called push-push mechanism, as is known, for example, from the actuation of ballpoint pens, can be integrated into the switching part. This mechanism ensures that the switching part returns to its original position or a position close to the original position after it has been actuated and does not remain in the adjusted or displaced position. When the switching part is activated, it only returns to its original starting position every second activation. In the intermediate states, the switching part can be held in a position slightly different from the starting position, with this different position preferably deviating from the switching position into which the switching part is displaced by the drop-out rod.

[0024] The transmission device can be a rocker, a lever, a rod assembly, or any gear mechanism, such as a rack and pinion with multiple gears or a belt drive. The transmission device is designed such that actuation or adjustment of the switching element by means of the drop-out rod results in an adjustment of the stop element. If the stop element is in its stop position, it is moved to its release position as a result of actuation of the switching element. If the stop element is in its release position, it is moved to its stop position by actuation of the switching element.

[0025] To ensure that the switching part is in a position in which it can engage with the drop-out rod, the switching part can be pre-tensioned into this position by means of a spring.

[0026] In a further development of the invention, it can be provided that the stop part is adjustably mounted in such a way that it can be adjusted both by the adjustment movement transmitted via the transmission device and manually by the user. If the switching part and / or the transmission device do not function properly due to a defect, the user can release the stop part from the functional engagement with the transmission device and then manually adjust the stop part between the stop position and the release position so that the functionality of the locking device is maintained. This release can be irreversible, but it is also possible for the user to later restore the functional engagement between the stop part and the transmission device, i.e. the release is reversible.

[0027] In one possible embodiment of the invention, the guides can be arranged perpendicular to the drop bar and at the edges of the fabric running perpendicular to the drop bar. Alternatively or additionally, the guides can also run below and / or above the fabric, and in particular in its edge areas.

[0028] Further details and features of the invention will become apparent from the following description of embodiments of the invention with reference to the drawings. They show: Fig. 1A schematic view of a shading device according to the invention, Fig. 2the section II-II in Figure 1 , Fig. 3a and 3b the activation of the locking device when extending the drop rod, Fig. 4 a Figure 2 corresponding representation, with the dropout rod resting on the stop part, Fig. 5a and 5b the individual phases of deactivation of the locking device, Fig. 6 a Figure 1corresponding representation of a shading device according to a 1st modification, Fig. 7 a Figure 1 corresponding representation of a shading device according to a 2nd modification, Fig. 8a Figure 1 corresponding representation of a shading device according to a 3rd modification, Fig. 9 the side view IX in Figure 8 .

[0029] One in Figure 1 The schematically illustrated shading device 10 has two guides 11 in the form of straight guide rails running parallel to one another and arranged at a mutual distance, between which a drop rod 14 is arranged, which is guided in the guides 11 at its respective end section and is adjustable along the guides 11, as indicated by the double arrow A.

[0030] At the rear, according to Figure 1At the upper end of the guides 11, a cloth shaft housing 16 is arranged, in which a cloth shaft 13, only schematically indicated, is accommodated. A cloth 12 can be wound onto the cloth shaft 13 and unwound from the cloth shaft 13. The front, according to Figure 1 The lower longitudinal side of the cloth 12 is connected to the drop rod 14.

[0031] By means of a drive device (not shown), the drop rod 14 can be moved along the guides 11 and thereby moved away from the fabric shaft 13. This is referred to as the extension movement. The extension movement of the drop rod 14 pulls the fabric 12 off the fabric shaft 13 and stretches it between the fabric shaft 13 and the drop rod 14.

[0032] A cloth shaft motor (not shown) is assigned to the cloth shaft 13, by means of which the cloth shaft 13 can be rotated so that the cloth 12 is wound up on the cloth shaft 13 and the drop rod 14 is drawn in along the guides 11 to the cloth shaft 13.

[0033] Near the outer end of the guides 11 facing away from the fabric shaft housing 16, a locking device 15 is attached to each of them on their inner side facing each other, which locking device 15 is particularly suitable for Figure 2 The locking devices 15 are arranged below the fabric 12 and can be overrun by the drop bar 14.

[0034] The locking device 15 comprises a housing-like support part 19, which is detachably attached to the guide 11 and can be positioned in various positions on the guide 11. A stop part 17 is arranged on the support part 19 and is adjustable between a stop position, in which it protrudes into the path of movement of the drop rod 14, and a release position, as indicated by the double arrow B. In the release position, the drop rod 14 can move past the stop part 17 without coming into contact with it.

[0035] On the side of the stop part 17 facing away from the fabric shaft 13, an adjustable switching part 18 is arranged on the support part 19. In the illustrated embodiment, the switching part 18 is designed as a linearly adjustable pin 23, which has a rotatably mounted roller 22 at its upper end facing the path of movement of the drop-out rod 14. The switching part 18 has a push-push mechanism, i.e. after adjustment of the switching part 18 by contact with the drop-out profile 14 and triggering a switching process, the switching part 18 returns completely or at least approximately to its original position, as indicated by the double arrow C.

[0036] A transmission device 20, shown only schematically, for example in the form of a gear, is arranged within the housing-like support part 19. By means of the transmission device 20, an adjustment movement of the switching part 18 is converted into a linear adjustment movement of the stop part 17.

[0037] The drop rod 14 has on its underside a control part 24 which carries a control cam 21.

[0038] Based on the Figure 2 , 3a and 3b The activation of the locking device 15 is explained below. The drop rod 14 is extended along the guides 11 with a drive device (not shown), as indicated by the arrow R in Fig. 2is indicated. The fabric 12 is pulled off the fabric shaft 13 and spread out. With the further movement of the drop rod 14, it comes into the area of ​​the locking device 15. Since the stop part 17 is in its retracted release position, the drop rod 14 can move past the stop part 17 without coming into contact with it. This state is in Figure 3a shown.

[0039] During the further extension movement of the drop rod 14, its control part 24 comes into contact with the roller 22 of the switching part 18 and presses the switching part 18 downwards. The movement of the switching part 18 is transmitted via the transmission device 20 to the stop part 17, so that the stop part 17 is adjusted to its stop position, as shown in Figure 3b is indicated by the arrow D. In the stop position, the stop part 17 projects into the travel path of the drop rod 14.

[0040] The direction of movement of the dropout rod 14 is then reversed, as indicated by the arrow S in Figure 3b is indicated. The drop rod 14 rests against the stop part 17, so that further movement of the drop rod 14 in the direction of the cloth shaft 13 is prevented. By activating the cloth shaft 13, the cloth 12 is now tensioned and can be held under this tension. This state is shown in Fig. 4 shown.

[0041] By reversing the direction of movement of the drop-out rod 14, its control part 24 is released from the switching part 18 of the locking device 15, so that the switching part 18 returns to its initial position as a result of a spring (not shown).

[0042] Figure 4shows the drop rod 14 in contact with the stop part 17 of the locking device 15, whereby the fabric 12 is held under tension. In order to retract the shading device from this position, ie to wind the fabric 12 back onto the fabric shaft 13, the locking device 15 must be deactivated. For this purpose, the drop rod 14 is first moved in the extension direction, ie moved away from the fabric shaft 13 and the stop part 17, as shown in Figure 5a is indicated by the arrow R. This adjustment of the drop rod 14 takes place until its control part 24 comes into contact with the switching part 18 and adjusts it, whereby the stop part 17 is moved from its stop position to the release position, as shown in Figure 5ais indicated by the arrow E. Since the stop part 17 no longer hinders the movement of the drop rod 14, the drop rod 14 can be retracted in the direction of the fabric shaft 13 (arrow S), passing the stop part 17 without coming into contact with it, as shown in Figure 5b is shown.

[0043] Figure 6 shows an alternative embodiment to the shading device according to Figure 1 . According to Figure 1 The shading device 10 has two rail-like guides 11, which guide opposite end sections of the extension rod 14, so that the fabric 12 extends between the guides 11. The design according to Figure 6 This is achieved by positioning the guides 11 below the fabric 12, so that the fabric 12 also covers the tops of the guides when extended. Alternatively, the fabric 12 can also be positioned below the guides 11.

[0044] When designing according to Figure 7 a third rail-like guide 11 is provided, with all guides being arranged at a distance and running parallel to each other.

[0045] In the previous designs of the shading device 10, each guide 11 was assigned exactly one locking device 15. The Figure 8 and 9 show a further embodiment in which each guide 11 is assigned two locking devices 15.1 and 15.2, which are mounted at an axial distance on the respective guide 11. The locking devices 15.1 and 15.2 are each structurally and / or functionally identical and have the above-mentioned structure. When the drop rod 14 is extended (arrow R in Figure 9), it runs onto the first locking device 15.1, whereby its stop part 17 is moved from the release position into the contact position in the manner described above. If the user wishes to tension the fabric in this position, he can retract the drop rod 14 in the manner described above and bring it into contact with the stop part 17.

[0046] Alternatively, the user can extend the drop bar 14 further until it hits the second locking device 15.2 and moves its stop part 17 into the stop position as described above. By subsequently retracting the drop bar 14, it then engages the stop part 17.

[0047] To deactivate the locking device 15.1 or 15.2, the drop rod 14 is first moved in the extension direction as described above, so that the stop part 17 of the 2nd locking device 15.2 returns to its release position, allowing the drop rod 14 to be retracted. When the drop rod 14 then runs onto the 1st locking device 15.1, its switching part 18 is actuated, causing the stop part 17 of the 1st locking device 15.1 to move into the release position, allowing the drop rod 14 to be retracted further.

Claims

1. Shading device, comprising a cloth (12) that can be spread out in a cloth plane and is connected to a lead bar (14), the lead bar (14) being slidably guided in guides (11), the guides (11) running horizontally or at an inclination of at most 30° to a horizontal, and comprising at least one blocking device (15) that has a displaceable stop part (17) which can be displaced between a stop position, in which it can be brought into contact with the lead bar (14), and a release position, the blocking device (15) being arranged below the cloth plane and below the lead bar (14) and having a displaceably mounted switching part (18) which can be displaced, the displacement movement of which switching part is conveyed to the stop part (17) by means of a transmission device (20) in order to displace said stop part between the stop position and the release position, characterized in that the switching part (18) is displaceable by means of the lead bar (14) and that the switching part (18) can be brought into contact with a control part (24) formed on the lead bar (14).

2. Shading device according to claim 1, characterized in that the control part (24) is arranged on the underside of the lead bar (14).

3. Shading device according to either claim 1 or claim 2, characterized in that the control part (24) carries a control cam (21).

4. Shading device according to any of claims 1 to 3, characterized in that the control part (24) is arranged at a distance from the axial end of the lead bar (14).

5. Shading device according to any of claims 1 to 4, characterized in that the switching part (18) is arranged downstream of the stop part (17) in an extension direction (R) of the lead profile (14).

6. Shading device according to any of claims 1 to 5, characterized in that the stop part (17) is mounted so as to be slidable and / or pivotable.

7. Shading device according to any of claims 1 to 6, characterized in that the switching part (18) is mounted so as to be slidable and / or pivotable.

8. Shading device according to any of claims 1 to 7, characterized in that each guide (11) has a blocking device (15).

9. Shading device according to any of claims 1 to 8, characterized in that each guide (11) has a plurality of blocking devices (15.1, 15.2) arranged at an axial distance.

10. Shading device according to any of claims 1 to 9, characterized in that the stop part (17), the switching part (18), and the transmission device (20) are mounted on a carrier part (19) and can be removed from the guide (11) together with said carrier part as a modular unit (25).

11. Shading device according to claim 10, characterized in that the carrier part (19) can be selectively attached to different portions of the guide (11).

12. Shading device according to any of claims 1 to 11, characterized in that the switching part (18) has a rotatably mounted roller (22) which can be brought into contact with the control cam (21) of the lead profile (14).

13. Shading device according to any of claims 1 to 12, characterized in that the transmission device (20) has a gear mechanism and / or a lever and / or a toothed drive and / or a belt drive.

14. Shading device according to claim 13, characterized in that the transmission device (20) comprises a push-push mechanism.

15. Shading device according to any of claims 1 to 14, characterized in that the switching part (18) is prestressed by means of a spring.

16. Shading device according to any of claims 1 to 15, characterized in that the stop part (17) can also be manually displaced between the stop position and the release position.