CH714837A1 - Device for fastening slat blinds. - Google Patents

Abstract

A device for fastening a slatted blind to a building projection with a U-profile is described. The device comprises an extensible clamping device (1), which has two opposing clamping rails (2, 3), wherein the clamping rails (2, 3) of guides (6, 7) are guided in the longitudinal direction and each have a rack (4, 14) to longitudinally move the clamping rails (2, 3) by means of a gear (5) and to clamp the clamping device (1) between the side walls of the U-profile.

Description

description

Technical field The invention relates to a device for fastening slat blinds to a building projection.

PRIOR ART Devices for attaching sturgeons to a building projection are known and are described, for example, in GB 1 230 204 A, EP 1 057 436 A2, EP 1 321 623 A1 or EP 1 617 037 A1. A bracket for receiving the slat blinds is attached directly to the ceiling or to a wall above a window using a bracket, for example a mounting bracket, before the insulation layer can be used to insulate the building. To do this, the construction workers have to interrupt their work until the blind installers have installed the fastening device. Only then can the construction workers continue to insulate the building. This is very time consuming.

Description of the invention The present invention has for its object to provide a fastening device for slat blinds, which can be attached directly to the insulation layer.

This object is achieved by a device for attaching a slat blind to a building projection with a U-profile comprising an extendable clamping device. The clamping device has two opposing clamping rails, which are each guided by guides in the longitudinal direction and each have a toothed rack in order to move the clamping rails in the longitudinal direction by means of a gearwheel and to clamp the clamping device between the side walls of the U-profile.

The invention has the advantage that the fastening device enables the attachment of disturbances directly to the insulation layer on building protrusions. A particular advantage of the invention is that the fastening device can be individually adapted to the width of the place of use by the adjustable width of the clamping device.

Under a building ledge with a U-profile is understood, for example, a store niche, which is located above a window. The store niches are preferably lined with an insulation layer, so-called thermal insulation composite systems, for thermal insulation of buildings. Such thermal insulation composite systems are, for example, Sagex insulation panels made of expanded polystyrene and are also called insulation lintels. The insulation layer, in which the clamping device can be clamped, can also have a plaster layer. The clamping device according to the present invention is designed such that it can reach directly into the insulation layer or through the plaster layer into the insulation layer.

In one embodiment, a fastening element is additionally provided on the clamping device in order to fasten the slat blinds to the clamping device. According to the present invention, a fastening element is preferably understood to mean a screw or, depending on the embodiment of the invention, a screw-nut connection.

According to the invention, the extendable clamping device has two opposing clamping rails. These are preferably elongated and have a cutout in the middle. Both clamping rails each have a guide along one outer longitudinal side, as a result of which the clamping rails are guided in the longitudinal direction when they are driven apart. On the opposite long side, both clamping rails each have a rack in order to move the clamping rails in the longitudinal direction by means of a gearwheel. The teeth of the rack point inwards into the cutout in the middle of the clamping rails.

Preferably, the clamping rails on one end edge, which can be inserted into the side walls of a U-professional, on a clamping element, which is preferably formed tip-shaped and preferably comprises at least one tip. The at least one tip is expediently designed such that it can grip into the insulation material and be inserted. The at least one tip can also be designed in the form of a wedge. The clamping element preferably has at least two, more preferably at least four or five tips, preferably two tips on the outer sides of the end edges having a longer shape than the others, so that the clamping rails are held stable and do not tilt sideways. This leads to a higher stability of the procedure.

The two clamping rails are essentially identical, but mirror images, that is, opposite, trained. In the assembled state of the clamping device, the clamping elements of the individual clamping rails point in the opposite direction, in such a way that they can be clamped in the mutually opposite side walls of the U-profile.

In the assembled state, the clamping rails are arranged one on top of the other so that the guide of the one clamping rail can slide along the outside of the rack of the other clamping rail. As a result, the clamping rails are guided in the longitudinal direction and are held in position by the mutual guides. The teeth of the two racks face each other in the cutout in the middle of the clamping rails. The outside of the rack of one clamping rail is preferably in a projection along the guide of the other

CH 714 837 A1

Clamping rail. Such a projection serves to limit the freedom of movement between the two clamping rails and to prevent unwanted lateral loosening of the clamping rails during the rotation of the gearwheel. The height of the gear has at least a height of two racks, so that the gear can accommodate both racks. The height of the gearwheel is preferably somewhat higher than the two toothed racks. The gearwheel is preferably arranged on a disk. The gear wheel engages in the teeth of the rack of the two clamping rails. If the gearwheel is turned, the two clamping rails can be pulled apart at the same time and brought to the desired length. As a result, the length of the clamping device varies and can be adapted to different widths of the building projection or the store niche. Depending on the width of the building projection or the store niche, the length of the individual clamping rail is, for example, between 5 cm and 20 cm, preferably between 5 cm and 15 cm, more preferably between 8 and 12 cm. With a length of the clamping rails of 10 cm, the clamping device can, for example, be adjusted to a width of 10 cm to 18 cm and driven apart. If longer clamping rails are used, the clamping device can be spread apart over a greater length.

The clamping rails can be driven apart by means of a gear via various screw or screw-nut constructions.

In a preferred embodiment, the clamping device has a rotating element to rotate the gear. The rotating element preferably has a hexagonal element in the form of a nut and can be rotated directly or using a suitable tool. In an exemplary embodiment, the nut is a 17 mm nut and the suitable tool is, for example, a socket wrench with a 17 mm socket. The hexagonal element is preferably arranged on a disk.

In a preferred embodiment, the rotating element has an internal thread for receiving a screw, via which the rotating element is rotatable. Both the rotary element and the gearwheel preferably have an internal thread.

In an even more preferred embodiment, the rotary element and the gear have an opening for receiving a press sleeve with an internal thread. During the manufacture of the clamping device, the compression sleeve is pressed into the opening of the rotating element and the gear wheel. The rotary element and the gearwheel are connected to one another via the press sleeve. If the rotating element is rotated, the gearwheel also rotates, as a result of which the clamping rails are driven apart. The internal thread serves to receive a screw, by means of which a bracket for slat blinds can be attached to the clamping device. A compression sleeve is understood to be a cylindrical hollow body which has an internal thread. In an exemplary embodiment, the internal thread has a diameter of 4 mm to 10 mm, preferably 6 mm.

In a further embodiment, the rotary element has a cutout for receiving a screw nut. If the rotating element is rotated, in this embodiment the screw nut and the screw screwed into it and thus also the gearwheel connected to the screw are rotated. This allows the clamping rails to be driven apart. The retaining bracket for slat blinds can be attached to the screw using another nut.

The gear and the rotating element form a connecting part for the two clamping rails. The clamping rails are held together and moved via the connecting part.

In a preferred embodiment, the clamping rails are arranged between the disc with a gear and the disc with the rotating element. This keeps them in position and they can be adjusted lengthways.

When assembling sturgeons with the fastening device according to the invention, the clamping device is preferably first clamped in the insulation layer. For this purpose, the clamping rails are moved over the rotating element using a suitable tool and pressed into the insulation layer. Either in the same work step or afterwards, a holding bracket, also called a channel support, is attached to the clamping device, preferably screwed on. The bracket is used to hold the blind channel with the slats. The clamping devices are attached at the desired distance in the building projection, preferably at a distance of about 20 to 50 cm, depending on the size and weight of the slat blind and the length of the building projection. A slat blind weighs about 5 to 10 kilograms. Once the clamping devices and the holding brackets have been installed, the slat blinds can be inserted into the holding brackets and, if necessary, attached to them using a screw or a screw-nut connection.

In one embodiment, the entire clamping device, that is, both the two clamping rails as well as the gear and the rotating element, are made of the same material, preferably of metal. In a preferred embodiment, the clamping device is made of metal treated with trowalised material. Tumbling is also understood to mean surface grinding.

In a further embodiment of the invention, another object, which would like to be attached to a building projection, can be attached to the clamping device. Examples of such objects are inspection panels.

CH 714 837 A1 Further advantages and features of the invention follow and from the following description, in which the invention is explained in more detail with reference to an embodiment shown in the schematic drawings.

BRIEF DESCRIPTION OF THE FIGURES [0024] It shows:

Fig. 1A the first clamping rail in a perspective view from above, Figure 1B the first clamping rail in a view from above, 1C the first clamping rail in a view from the front to the transverse side, Figure 2A the second clamping rail in a perspective view obliquely from above, Figure 2B the second clamping rail in a view from above, Figure 2C the second clamping rail in a view from the front to the transverse side, Figure 3A the gear wheel on a disk in a perspective view obliquely from above, Figure 3B the gear on a disc in a view from above, Figure 3C the gear on a disc in a side view, 4A-4D the rotating element on a disc in an oblique view from above, from above, from the side or from below, Figure 5A the compression sleeve from the side, Figure 5B the compression sleeve from obliquely below, Figure 5C the compression sleeve from diagonally above, Figure 5D the compression sleeve from below, Figure 6A the clamping device closed in a perspective view obliquely from above, Figure 6B the clamping device closed in a view from above, Figure 6C the clamping device closed in a view from below, Figure 6D the clamping device closed in a perspective view obliquely from below, Figure 7A the clamping device opened in a perspective view obliquely from above, Figure 7B the clamping device opened in a view from above, Figure 7C the clamping device opened in a perspective view obliquely from below, Figure 7D the clamping device opened in a view from below, Figure 7E the clamping device opened in a view from the front on the transverse side, Figure 8A the clamping device opened in a further embodiment in a perspective view obliquely from above, 8B-8C the rotating element on a disc viewed obliquely from above or from below, Fig. 9 the clamping device with a screwed-on bracket clamped in the insulation layer of the side walls of the ledge.

In the figures, the same reference numerals have been used for the same elements, and first-time explanations apply to all figures, unless expressly stated otherwise.

Exemplary embodiments of the invention [0025] FIG. 1A shows the first clamping rail 2, which is elongated and has a cutout 20 in the middle. Along one outer long side, the clamping rail 2 has a first guide 6, which

CH 714 837 A1 forms a projection along one long side. On the opposite longitudinal side of the guide 6, the clamping rail 2 has a rack 4, the teeth of the rack 4 pointing inwards into the cutout 20. The cutout 20 with the rack 4 serves to receive the gear 5 as described in FIGS. 3A-3C. At one end edge, the clamping rail 2 has a clamping element 10 for clamping in the insulation layer of a building projection. The clamping element 10 has tip-shaped elements 19 which can engage in the side walls.

1B shows the clamping rail 2 as described in relation to FIG. 1A in a view from above. The first guide 6 is used to guide a second clamping rail in the longitudinal direction so that the clamping rails do not swing out when they are driven apart.

1C shows the transverse side of the first clamping rail 2 with the first guide 6 and the tip-shaped elements 19 of the clamping element 10 in a perspective view.

2A and 2B, the second clamping rail 3 is shown with the second guide 7 along the one outer longitudinal side of the clamping rail 3, the cutout 20 and the rack 14 along the opposite longitudinal side of the guide 7 with the teeth inside in Section 20. The clamping rail 3 is a mirror image, ie formed opposite to the clamping rail 2. Because the first clamp rail 2 and the second clamp rail 3 are mirror images, i.e. are configured in the same way, the tip-shaped elements 19 of the clamping element 10 of the second clamping rail 3 are mounted on the other end edge than in the first clamping rail 2.

2C shows the transverse side of the second clamping rail 3 with the second guide 7 and the tip-shaped elements 19 of the clamping element 10. The second guide 7 points downwards. The second clamping rail 3 can be positively placed on the first clamping rail 2 from FIG. 1A, as shown in FIG. 6A.

3A and 3B show the gear 5 with a compression sleeve 15 with an internal thread 11 for receiving a screw. The gear wheel 5 is mounted on a first disk 16. In the assembled state, the first clamping rail 2 lies on the first disk 16, so that the gear 5 comes to rest in the cutout 20 with the first rack 4. The first guide 6 points upwards. The second clamping rail 3 is placed on the first clamping rail 2 with the guide 7 facing downwards, as shown in FIGS. 7A-7E.

Fig. 3C shows the first disc 16 and the gear 5 from the side.

4A-4C show the rotating element 9 on a second disc 17 with an opening for the compression sleeve 15 with an internal thread 11 as described in FIGS. 5A-5D. In the assembled state, the second disk 17 with the rotating element 9 rests on the gear wheel 5 (as described in FIG. 3), the rotating element 9 being located on the side of the second disk 17 facing away from the gear wheel 5.

4D shows the second disk 17 with the opening of the compression sleeve 15 with an internal thread 11.

5A-5D, the compression sleeve 15 with the internal thread 11 is shown in different perspectives. In the assembled state, the compression sleeve 15 with the internal thread 11 is pressed into the opening of the gear wheel 5 and into the opening of the rotating element and holds them together. In an exemplary embodiment, the internal thread 11 has a diameter of 6 mm.

6A-6B show the clamping device 1 in the assembled and closed state from above, before the clamping rails 2 and 3 are driven apart and inserted into the insulation layer. The first clamping rail 2 is shown with the first guide 6, the cutout 20 and the first rack 4 as described in FIG. 1A. The second clamping rail 3, as described in FIG. 2A, has a second guide 7, a second rack 14 and tip-shaped elements 19. The second disk 17 with the rotating element 9 rests on the second clamping rail 3 and the first guide 6 of the first clamping rail 2. The rotating element 9 has an opening with a compression sleeve 15 with an internal thread 11.

6A also shows the first disc 16 on which the first clamping rail 2 rests. The second clamping rail 3 lies on the first clamping rail 2 and the second disk 17 with the rotating element 9 lies on the gear wheel 5 (not visible in this illustration).

In the assembled state, the clamping rails 2 and 3 are arranged one on the other such that the guide 6 of the first clamping rail 2 can slide along the outside of the rack 14 of the other clamping rail 3. Due to the mutual guidance, the two clamping rails can be guided in the longitudinal direction and held in position. The teeth of the two racks face each other. The outside of the first rack 4 of the first clamping rail 2 lies in a projection along the guide 7 of the second clamping rail 3. The outside of the second rack 14 of the second clamping rail 3 lies in a projection along the guide 6 of the first clamping rail 2. Such a projection serves to limit the freedom of movement between the two clamping rails and to prevent unwanted lateral loosening of the clamping rails during the rotation of the gear.

6C and 6D, the clamping device 1 is shown from below, as described in FIGS. 6A and 6B.

7A and 7B, the clamping device 1 is shown in the assembled and opened state from above, as it could clamp in the insulation layer of the side walls. The first clamping rail 2 with the first guide 6, the cutout 20, the first rack 4 and the clamping element 10 with the tip-shaped elements 19 and

CH 714 837 A1 the second clamping rail 3 with the second rack 14, the cutout 20, the second guide 7 and the clamping element 10 with the tip-shaped elements 19 are driven apart. The second disk 17 with the rotating element 9 rests on the second clamping rail 3 and the first guide 6 of the first clamping rail 2. The rotating element 9 has an opening with a compression sleeve 15 with an internal thread 11. The two clamping rails 2 and 3 rest on the first disc 16.

In an exemplary embodiment, the clamping device 1 is adjustable to a length between 10 cm and 30 cm, preferably between 10 cm and 20 cm, even more preferably to 10 cm to 18 cm. Here, length is understood to mean the entire length from the end of the tip-shaped elements 19 of the first clamping rail 2 to the end of the tip-shaped elements 19 of the second clamping rail 3.

7C and 7D show the clamping device 1 from below, as described in FIGS. 7A and 7B.

Fig. 7E shows the clamping device 1 in a view of the outer side. The first clamping rail 2 with the tip-shaped elements 19 and the first guide 6 is located on the first disc 16 as the bottom layer. The second clamping rail 3 with the second guide 7 is located thereon, the second guide having the same height as the first clamping rail 2 and the second clamping rail 3 together and also rests on the first disk 16. The second disk 17, which has the rotating element 9, lies on the second clamping rail 3. Preferably, the second disc 17 does not lie directly on the second clamping rail 3, but there is play between the second disc 17 and the second clamping rail 3, so that the clamping rails can be driven apart more easily. The game, or the distance between the second disc 17 and the second clamping rail 3 is achieved by the height of the gear. The gearwheel is preferably minimally higher than the height of the first clamping rail 2 and the second clamping rail 3 together. In an exemplary embodiment, the total height of the clamping device 1, as shown in FIG. 7E, from the first disk 16 to the rotating element 9 is between 12 mm and 20 mm, preferably between 14 mm and 18 mm, particularly preferably 16 mm.

8A shows a further embodiment of a clamping device 1 with the first clamping rail 2 with the first guide 6, the cutout 20 and the first rack 4 and the second clamping rail 3 with the second guide 7, the second rack 14 and the clamping element 10 with the tip-shaped elements 19. The connecting part between the first clamping rail 2 and the second clamping rail 3 has a first disk 16 with a gear wheel 5 (as shown in FIG. 3A) and a second disk 17 with a rotating element 9, the rotating element 9 being one Cutout 13 for receiving a screw nut. If the rotating element is rotated, in this embodiment the screw nut and the screw screwed into it and thus also the gearwheel connected to the screw are rotated. This allows the clamping rails to be driven apart.

8B shows the second disk 17 with the hexagonal rotating element 9, the cutout for receiving a screw nut 13 and the opening 22 for a screw in the disk 17.

8C shows the second disk 17 with the opening 22 for a screw.

FIG. 9 shows the insulation layer 18 of a building projection, in which the clamping device 1 clamps with the first clamping rail 2, the second clamping rail 3 and with the clamping elements 10. The first disc 16 of the clamping device 1 is in contact with the ceiling 23 of the insulation layer 18 of the U-shaped building projection. The bracket 21 for receiving a starter box is fastened to the clamping device 1 via a fastening element 8. The fastening element 8 is a screw 12 and is screwed into the internal thread of the compression sleeve, which is located inside the rotating element 9, the second disk 17 and the gearwheel from FIG. 3A.

LIST OF REFERENCE NUMERALS [0044]

Clamping device first clamping rail second clamping rail first rack

Gear first guide second guide

fastener

rotating member

clamping element

CH 714 837 A1

inner thread

screw

Cutout for receiving a screw nut second rack

compression sleeve

First slice

Second disc

insulation layer

Lacy elements

neckline

headband

Opening for screw

blanket

claims

Claims (10)

1. Device for attaching a slat blind to a building projection with a U-profile, characterized in that an extendable clamping device (1) is provided which has two opposing clamping rails (2, 3), the clamping rails (2, 3) each from Guides (6, 7) are guided in the longitudinal direction and each have a rack (4, 14) in order to move the clamping rails (2, 3) in the longitudinal direction by means of a gear wheel (5) and the clamping device (1) between the side walls of the U -Clamp profiles. 2. Device according to claim 1, characterized in that the clamping rails (2, 3) are of opposite construction. 3. Device according to one of claims 1-2, characterized in that a fastening element (8) on the clamping device (1) is provided in order to fasten the slat blind on the clamping device (1). 4. The device according to claim 3, characterized in that the fastening element (8) is a screw (12). 5. Device according to one of claims 1-4, characterized in that the clamping rails (2, 3) each have at one end edge at least one clamping element (10) in order to insert the clamping rails (2, 3) into the side walls of the U-profile , 6. Device according to one of claims 1-5, characterized in that the clamping device (1) has a rotating element (9) to rotate the gear (5). 7. The device according to claim 6, characterized in that the gear (5) and the rotating element (9) have an internal thread (11) for a screw. 8. The device according to claim 6, characterized in that the gear (5) and the rotary element (9) have an opening for receiving a press sleeve (15) with an internal thread (11). 9. The device according to claim 6, characterized in that the rotary element (9) has a cutout for receiving a screw nut (13). 10. Device according to one of claims 1-9, characterized in that the clamping rails (2, 3) can be inserted into the insulation layer of the U-profile by means of their end edges.