Pleated screen with magnetic locking

Abstract

A pleated blind (10) has a pleated fabric arranged between two movable rails (12), the rails (12) being guided by guide cables which are attached to tension shoes (14) mountable on a window frame (18) and are guided and deflected by the rails (12), wherein at least the upper rail (12) can be locked in the uppermost position by means of a magnetic locking mechanism on the upper tension shoes (14). In order to enable simple and variable installation on differently inclined window rebates (16), it is provided that the magnetic locking elements belonging to the rail (12) are arranged on a receiving element (26) which is pivotably mounted relative to the rail (12).

Description

[0001] According to the preamble of claim 1, the invention relates to a pleated blind with a pleated curtain arranged between two movable rails, wherein the rails are guided on guide cables which are fastened to tensioning shoes which can be mounted on a window frame and are guided and deflected by the rails, wherein at least the upper rail can be locked in the uppermost position by means of a magnetic lock on the upper tensioning shoes.

[0002] Pleated blinds, also known as folding blinds, are characterized by their folded panels, which can be fanned out by pulling them apart between the two movable rails. Clamping forces between the cable guide and the two rails hold the latter in the selected position.

[0003] However, especially with a fully extended pleated blind, i.e., when the lower rail is attached to the tensioning shoes at the lower end of the window to be shaded and the upper rail is attached to the tensioning shoes at the upper end of the window, restoring forces supported by gravity must be expected. These can shift the upper rail, creating an annoying gap at the upper edge of the window. In addition to mechanical locking mechanisms, magnetic locking mechanisms are also known for this purpose. Typically, magnets are fixed in the movable rail and metal counterparts are located in the tensioning shoes, or vice versa.

[0004] Such a magnetic lock fulfills its intended purpose of holding the rail in its upper end position and preventing the formation of an annoying gap. However, with the increasingly common inclined window rebates with tensioning shoes aligned at a corresponding angle to the pleated blind, there is the problem that the magnetic effect causes the rail to tilt, and in the end position, it is tilted into the room. This is usually remedied by providing shims with a fixed angle, but this annoying tilt can only be avoided with a non-adjustable angle that is optimally matched to the respective window rebate, which requires a large number of different shims to be stocked. Furthermore, installation on the window rebate is significantly more complex and error-prone.

[0005] The object of the present invention is to improve a pleated blind with regard to its installation in window frames with an inclined window rebate.

[0006] According to the invention, the object is achieved by a pleated blind of the type mentioned at the outset, in which the elements of the magnetic locking device belonging to the upper rail are arranged on a receiving element which is pivotally mounted relative to the rail.

[0007] The inventive solution offers the advantage that the magnetic elements, or in the case where the magnets are arranged in the clamping shoes, the metal counterparts, can align themselves with the clamping shoes mounted on an inclined window rebate. The rail does not change its position in this process; it remains in its optimal position. On the other hand, the clamping shoes can simply be placed on the inclined window rebate beforehand and secured there, since their position does not need to be adjusted to the window rebate, as the compensation is later achieved by the pivoting receiving element.

[0008] In a preferred embodiment of the invention, the receiving element is pivotally mounted in a profile chamber of the rail. By arranging the joint in the rail, the width of the rail can be reduced.

[0009] It is particularly preferred that a pivot joint be formed between the rail and the receiving element itself. This design allows the number of parts to be significantly reduced, since virtually no additional parts are required for the magnetic locking components in the rail compared to a conventional mounting.

[0010] For example, a structural implementation of such a swivel joint can be designed in such a way that a concave joint socket is formed by a profile wall of the rail and a corresponding, convex joint head is formed by the outer contour of the receiving element.

[0011] A further preferred embodiment of the invention provides that the profile wall is formed on an open profile chamber, the open side of which is closed at least in the region of the receiving element by an insert element, the inside of which is formed as an internal cylinder to continue the joint socket.

[0012] Such a solution offers the advantage of easy installation, as the receiving element can be inserted into the profile chamber and then secured and covered by the insert element. In a preferred embodiment, the insert element can cover the receiving element in the rail at its front end. If necessary, the insert element can also cover the entire open flank of the profile chamber and preferably also lock both receiving elements by being inserted along the entire length of the rail.

[0013] A preferred embodiment of the receiving element can provide for the joint head to be partially formed by axial projections with an outer radius. The receiving element can be mounted more easily with such projections than if its entire cross-section were designed as a joint element, since the projections only need to extend over the required pivot angle range.

[0014] The arrangement of the magnet or the metallic counterpart is preferably in such a way that the receiving element has a receptacle in which a magnet or a metallic counterpart to a magnet and / or a metallic counterpart on the clamping shoes is arranged.

[0015] The assembly can be further simplified by mounting the magnet on an insert that is clamped in the holder.

[0016] A further preferred embodiment of the invention provides that the joint socket has a recess in the region of the receptacle, through which a radial projection of the receiving element or insert protrudes, in which the magnetic element or a metallic counterpart is arranged. Since joint support is particularly useful in the area of ​​magnetic forces, such an embodiment is advantageous, whereby the aforementioned projections in the region of the recesses can be axially adjacent to the receiving element.

[0017] Finally, in yet another embodiment, it can be provided that the edges of the recess act as radial rotation stops to limit the pivot angle of the receiving element in the rail, wherein the radial projection of the receiving element rests against the respective edge.

[0018] Further features, details, and advantages of the invention will become apparent from the wording of the claims and from the exemplary embodiment described below with reference to the drawings. They show: Fig. 1 a side view of a rail and a clamping shoe mounted on an inclined window rebate; Fig. 2 a sectioned view in the area of ​​the clamping shoe Fig. 1 ; Fig. 3 a side view of a rail and a clamping shoe mounted on a straight window rebate; Fig. 4 a sectioned view in the area of ​​the clamping shoe Fig. 3 ; Fig. 5 Fig. 6 shows an oblique view of the rail in the area of ​​a magnetic locking mechanism; Fig. 6 shows an oblique view of the rail with the plug-in element removed; Fig. 7 an oblique view of the rail without the plug-in element and the receiving element removed; Fig. 8 an oblique view of the rail from the clamping shoe side with inclined receiving element; Fig. 9 an oblique view of the rail from the clamping shoe side with the receiving element aligned straight; Fig. 10 an oblique view of the receiving element.

[0019] Fig. 1 and 2show a pleated blind 10, of which, for the sake of simplicity, only a movable rail 12 and a tensioning shoe 14 are shown. The tensioning shoe is mounted here on an inclined window rebate 16 of a window frame 18. On the side facing the rail 12, a metallic element 45 is provided for interacting with a magnet 20 arranged on the rail side. A tensioning cable (not shown) is attached to the tensioning shoe 14, with a total of four tensioning shoes being provided, between which tensioning cables are tensioned on the window frame 18 in a manner known per se. A pleated blind (not shown) is stretched between the movable rail 12 and another movable rail arranged parallel to it.The rails can be moved independently of each other, allowing the curtain to be adjusted between a folded position, in which the two rails are as close together as possible, and a fully extended position, in which the rails are positioned at the top or bottom of the window rebate. The magnetic locks mentioned above are incorporated into all tensioning shoes and the adjacent areas of the rails 12. However, they are particularly important for the closing function at the top of the window rebate, as gravity causes the upper movable rail to have a greater tendency to move away from its ideal closed position, despite the frictional forces built up between the cable guides and the rails. Therefore, the magnetic locks may be omitted at the bottom of the window rebate.

[0020] The magnets 20 are attached to inserts 22 which are clamped in receptacles 24 in receiving elements 26.

[0021] The receiving elements 26 are essentially cylindrical and form a pivot bearing head 30 with their outer circumference. As a counterpart to the formation of a pivot bearing 32, a profile chamber 34 of the rail 12 is formed with a wall 40 having a corresponding concave radius. The profile chamber 34 is open at its front side, with an insert element 36 closing the opening at least in the area of ​​the receiving element 26 and preventing the receiving element 34 from falling out. The insert element 36 has an inner cylindrical surface 38, which continues the wall 40 of the profile chamber to form the joint socket in the inserted state. Fig. 5 It is also clearly visible that the male element 36 has a cover 37 which extends to the wall 40 of the profile chamber and axially covers the female element 26.

[0022] The interacting radii of the cylindrical outer surface of the receiving element 26 and the inner cylindrical surfaces of the wall 40 of the profile chamber 34 and the male element 36 enable a pivoting movement with low friction. The pivoting movement is limited by the edges of a recess 42 in the wall 42 of the profile chamber, through which the respective insert 22 protrudes with its attached magnet 20.

[0023] Projections 43 with cylindrical outer surfaces corresponding to the outer circumference of the receiving element 26 form part of the joint head axially adjacent to the projecting insert 22, since no bearing is possible in the recess.

[0024] The possible end positions are, on the one hand, those in Fig. 3 and 4 shown straight aligned position of the magnet 20 for a right-angled window rebate 16, the maximum achievable pivot position can be designed somewhat larger than in the Fig. 1 and 2 shown pivot position with a correspondingly inclined window rebate 16 of the window frame 18.

[0025] The recess 42 also ensures axial fixing of the receiving element 26 in the profile chamber, since the insert 22 projecting into the recess 42 prevents axial displacement.

[0026] Based on Fig. 5 bis 10 The assembly of the pivot bearings 32 in the rail 12 is illustrated, with only one edge area of ​​a rail 12 being shown in the area of ​​the magnetic locking device provided there. Typically, the rails have another, mirror-symmetrical pivot bearing at the opposite end for another magnetic locking device provided there.

[0027] In Fig. 10 is a pre-assembled receiving element 26, ie already provided with an inserted insert 22 with a magnet 20, shown as an individual part. In Fig. 7 The rail is shown prior to assembly, with the recess 42 clearly visible. In a first step, the receiving element 26 is inserted into the profile chamber 34, with the protruding insert 22 being inserted into the recess 42. Subsequently, the insertion element 36 is mounted, with the receiving element 26 being secured between the inner cylindrical surfaces and the recess 42 in such a way that it can only be pivoted between the previously discussed end positions defined by the recess.

[0028] Depending on the design, the insert elements can be inserted along the length of the rail or snapped into place from the opening side of the profile chamber 34. A combination of these two insertion movements is also possible to first snap the insert element into place and then slide it into its final assembly, whereby parts of the insert element 36 can be pushed, for example, behind an already mounted end cap 44 at the front end of the rail.

[0029] Fig. 8 and 9 show the rail 12 again in an oblique view from the frame side. Clearly visible in Fig. 8 the corresponding inclination of the receiving element 26 from Fig. 1 and Fig. 2 in order to adapt the alignment of the magnet 20 to the inclination of the clamping shoe on the window rebate when the locking position is reached when the rail 12 is moved into its upper end position.

[0030] Fig. 9 shows the alignment for a simple rectangular window rebate according to Fig. 3 and 4 .

[0031] The invention is not limited to one of the embodiments described above, but can be modified in many ways.

[0032] All features and advantages arising from the claims and the description, including structural details, spatial arrangements and method steps, can be essential to the invention both individually and in a wide variety of combinations. Bezugszeichenliste

[0033] 10Pleated blind 12Rail 14Clamping shoe 16Window rebate 18Window frame 20Magnets 22Insert 24Receptacle 26Receiving element 30Pivot bearing head 32Pivot bearing 34Profile chamber 36Insert element 37Cover 38Inner cylindrical surface of the cover 40Wall (of the profile chamber) 42Recess (in the wall) 43Protrusions 44End cap 45Metallic element

Claims

1. Pleated blind with a pleated curtain arranged between two movable rails (12), wherein the rails (12) are guided on guide cables which are attached to tensioning shoes (14) which can be mounted on a window frame (18) and are guided and deflected by the rails (12), wherein at least the upper rail (12) can be locked in the uppermost position by means of a magnetic lock on the upper tensioning shoes (14), characterized in that the elements of the magnetic locking device belonging to the rail (12) are arranged on a receiving element (26) which is pivotally mounted relative to the rail (12).

2. Pleated blind according to claim 1, characterized in that the receiving element (26) is pivotally mounted in a profile chamber (34) of the rail (12).

3. Pleated blind according to claim 2, characterized in that a pivot joint (32) is formed between the rail (12) and the receiving element (26).

4. Pleated blind according to claim 3, characterized in thata concave joint socket is formed by a profile wall (40) of the rail (12) and a corresponding, convex joint head (30) is formed by the outer contour of the receiving element (26).

5. Pleated blind according to claim 4, characterized in that the profile wall (40) is formed on an open profile chamber (34), the open side of which is closed at least in the region of the receiving element (26) by an insert element (36), the inside of which has an internally cylindrical surface (38) for the continuation of the joint socket.

6. Pleated blind according to claim 5, characterized in that the plug-in element (36) covers the receiving element (26) in the rail (12) at its front side.

7. Pleated blind according to one of claims 4 to 6, characterized in that the joint head is partially formed by projections (43) with an outer radius.

8. Pleated blind according to one of the preceding claims, characterized in thatthe receiving element (26) has a receptacle (24) in which a magnet (20) or a metallic counterpart to a magnet and / or a metallic counterpart on the clamping shoes (14) is arranged.

9. Pleated blind according to claim 8, characterized in that the magnet (20) is mounted on an insert (22) which is clamped in the receptacle (24).

10. Pleated blind according to claim 8 or 9, characterized in that the joint socket has a recess (42) in the region of the receptacle (24) through which a projection of the receptacle element or the insert (22) projects, in which the magnetic element (20) or a metallic counterpart is arranged.

11. Pleated blind according to claim 10, characterized in that the edges of the recess (42) act as rotation stops to limit the pivoting angle of the receiving element (26) in the rail (12).

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