EP1783315B1 - Cord retainer and end cap for a screening device - Google Patents

Description

The invention according to the preamble of claim 1 relates to a cord holder for a string, in particular tensioning cord, a shading system, in particular pleated blind, roller blind, or venetian blind, wherein the cord is clamped by a holding element, in particular a screw, in particular grub screw, frictionally, wherein on the cord holder a coupling element is provided, which can cooperate with a complementary coupling element on a movable rail, so that the movable rail can be locked to the cord holder. Furthermore, the invention relates to a rail with complementary coupling elements by means of which the rail can be locked to such a cord holder, according to claim 6 combined with such a cord holder end cap for a movable rail of the shading system and according to claim 8 a shading system with such a cord holder and / or such an end cap.

Such a cord holder for a tension cord of a shading system is from the WO 2005/062875 A2 known, which also discloses end caps of a movable rail. GB 2 334 063 A discloses a side guide wire clamp fastener mounted on a lowerable rail of a shade. DE 299 22 954 U1 discloses a drawstring for Roman blind drawstrings.

The invention is particularly concerned with improving the mountability of a shading system, in particular a plisse, on the inside of a window or a glazed door of the user. The pleat has a pleated curtain arranged between a fixed and a displaceable rail, which is pulled apart in an accordion-like manner in order to close or open the curtain. Lately, pleats are increasingly used, in which the curtain is arranged between two movable rails, so that it can be moved together on the bottom, as well as on the top of the window completely in the closed position. In addition, can be covered by the curtain any intermediate area in the window, so that the shading can be optimally adjusted to the particular needs of the user, for example, depending on the position of the sun.

Depending on the size, in particular width, of the curtain, several cords are distributed over the hanging width in order to support the curtain. This is especially the case with sloping roof windows of the case to prevent bulging of the curtain. In addition, to the arranged outside edges of the hanging cords, which are referred to in practice as outer cords and which are led from a window corner to a front side of the movable rail, from there longitudinally through the rails through to the other end side and from there to the opposite window corner. In practice, all cords are kept under a predetermined tension, the outer cords are particularly tight. The task of the outer cords is mainly to keep the movable rail in each set by the user due to their friction at the deflection points on the end faces of the movable rails.

In order to attach the strings to a wall, ceiling, in the window reveal or directly, which is usually the case with pleats, in the window frame (hereinafter referred to briefly as the building area), so-called cord holder are provided. The cords are knotted at an upper part of the cord holder and the upper part is then fastened to a lower part which is already bolted to the corresponding building surface. The tight knot of the strings is very expensive. Also, the cord length and thus the cord tension can only be adjusted inaccurately.

In the context of the present application, a cord holder is also an object with which two or more cords are combined to form a common operating cord or are fastened with the cords to a fixed or to a movable rail of a shading system, in particular a plisse.

Proceeding from this, the invention is primarily based on the problem, a cord holder, a rail, an end cap and a shading system of the type mentioned in such a way that facilitates the assembly and the line tension easier and more accurate and possibly adjustable.

To solve this problem is provided on the cord holder according to claim 1, that the cord is clamped by means of the holding means, in particular the screw, in particular the grub screw, frictionally in the cord holder; provided on the rail according to claim 5, that the complementary coupling elements is associated with an end cap; and provided on the end cap according to claim 6, that the coupling element is a spring clip, which engages behind a projection on the cord holder.

Due to the non-positive clamping, it is possible to set the cord to the desired length and thus desired cord tension and then clamp. The string tension can be adjusted exactly. In addition, the clamping is a much easier mounting option than the knot of the strings.

Preferably, the cord is pressed by the retaining element into a recess, for example a bore, and thereby clamped. As a result, the cord is deflected several times when pushing into the hole, which allows a particularly high clamping force of the standing under a significant tension cords.

In order to adjust the tension of the strings individually, each string should be assigned its own holding element. In terms of design, this can be achieved by providing a block centrally in the line holder, which block accommodates one or more holding elements. On either side of the block is provided a channel for one or more cords, with one or two cords per channel being provided in practice.

Another, independently conceivable aspect of the invention is concerned with the following problem. In particular, the upper movable rail in a curtain with two movable rails often slides back slightly down due to the weight of the rail itself and the curtain back, when the movable rail by the operator completely up against the associated building surface, especially the end position, ie usually the upper Edge of the window frame, has been pushed. But even the lower movable rail usually elastically springs back due to the bias of the pleated blind. This leaves an unsightly light gap between the respective movable rail and the associated building surface. To avoid this, coupling elements are provided on the cord holder, which cooperate with complementary coupling elements on the movable rail, so that the movable rail can be locked to the cord holder when it has been pushed into the upper or lower end position. The complementary coupling elements on the rail are preferably associated with an end cap of the rail, so that special measures on the rail are not required. The rails are usually available by the meter and are deflected to the required level, ie the window width. In the end faces of this deflected rail then the end caps are set, which then take not only the complementary coupling elements, but more functional elements.

According to a structural embodiment of this aspect of the invention, a spring clip is provided on the end cap as a complementary coupling element, which engages behind a projection on the cord holder when the movable rail has been pushed into the end position. Furthermore, a pocket is preferably provided on the end cap, in which the cord holder is received as soon as the movable rail has been pushed into the end position. In this way, a light gap, which is often present in the prior art, according to the thickness, in particular height, of the cord holder is avoided.

Another, also independently conceivable improvement of the end cap is that in the end cap, a slot is provided which is open in the direction away from the pocket and thus of the cord holder direction. Through this slot, the front side of the movable rails led out cords, so in particular the above-mentioned outer cords, out. In the prior art, as shown for example in a component catalog of BENTHIN GmbH, Bremerhaven, Germany, on page P 30, the cords are passed through a hole in the end face of the end cap. The cords must therefore be threaded through this hole, which is relatively expensive. In the end cap according to the invention, however, the cords only need to be inserted into the slot.

Since the outer cords, as explained above, subject to considerable tension to hold the movable rails in their respective position, and this tension with the width of the pleat and thus increasing Behanggewicht must be stretched more, occurs at the bottom of the slot a considerable Friction on. At the same time, the cords are comparatively thin, so that they cut into the material of the end cap relatively easily. This is not only unpleasant and leads to destruction of the end cap. The cord tension decreases, as shortened by the incision of the way for the string. To avoid this, a closure-resistant slider is provided at the bottom of the slot for a further independently conceivable embodiment of the invention.

Fig. 1

ein erstes Ausführungsbeispiel für einen Schnurhalter mit den Erfindungsmerkmalen in perspektivischer Unteransicht in geöffnetem Zustand,

Fig. 2

ein Oberteil des Schnurhalters gemäß Fig. 1 in perspektivischer Unteransicht,

Fig. 3

ein weiteres Ausführungsbeispiel für einen Schnurhalter mit den Erfindungsmerkmalen in perspektivischer Darstellung in geöffnetem Zustand,

Fig. 4

den Schnurhalter gemäß Fig. 3 in geschlossenem Zustand,

Fig. 5

eine Endkappe für eine bewegliche Schiene in Explosionsdarstellung,

Fig. 6

die Endkappe gemäß Fig. 5 in montiertem Zustand,

Fig. 7

die Endkappe gemäß Fig. 5, eingebaut in eine bewegliche Schiene mit Schnurhalter gemäß Fig. 3 in perspektivischer Darstellung,

Fig. 8

ein weiteres Ausführungsbeispiel für einen Schnurhalter mit den Erfindungsmerkmalen in perspektivischer Darstellung,

Fig. 9

den Schnurhalter gemäß Fig. 8 in Explosionsdarstellung,

Fig. 10

den Schnurhalter gemäß Fig. 8 in geöffneter Stellung bei eingelegten Schnüren,

Fig. 11

ein weiteres Ausführungsbeispiel für einen Schnurhalter mit den Erfindungsmerkmalen in einer beweglichen Schiene eines Plissees eingelegt in perspektivischer Draufsicht,

The invention will be explained in more detail with reference to embodiments shown in the drawing. Show it:

Fig. 1

a first embodiment of a cord holder with the features of the invention in a perspective bottom view in the open state,

Fig. 2

an upper part of the cord holder according to Fig. 1 in perspective bottom view,

Fig. 3

a further embodiment of a cord holder with the features of the invention in a perspective view in the open state,

Fig. 4

according to the cord holder Fig. 3 in closed condition,

Fig. 5

an end cap for a movable rail in exploded view,

Fig. 6

the end cap according to Fig. 5 in assembled condition,

Fig. 7

the end cap according to Fig. 5 , built into a movable rail with cord holder according to Fig. 3 in perspective,

Fig. 8

a further embodiment of a cord holder with the features of the invention in perspective view,

Fig. 9

according to the cord holder Fig. 8 in exploded view,

Fig. 10

according to the cord holder Fig. 8 in open position with inserted cords,

Fig. 11

a further embodiment of a cord holder with the inventive features inserted in a movable rail of a pleated in perspective plan view,

Fig. 12 Cross section of a movable rail with the cord holder according to Fig. 11 ,

The in Fig. 1 shown cord holder 10 has an upper part 11 and a lower part 12, which can be releasably connected to each other. For this purpose, 11 pockets 13 are provided in the upper part, which cooperate with approximately cylindrical projections 14 on the lower part 12, such that the upper part 11 is first placed with the pockets 13 on the projections 14 and the upper part 11 is then folded against the lower part 12. It snaps into the lower part 12.

The lower part 12 is further provided with a guided through a bore 15 screw 16, by means of which the cord holder 10 is screwed to a building surface, such as a wall, a ceiling or, which is usually the case in practice, directly into the window reveal ,

The cord holder 10 serves to hold cords 17 and 18, in particular tension cords, a shading system, such as a pleated. The cords 17, 18 are held frictionally on the cord holder 10, specifically in the upper part 11. The top 11 is formed in cross-section approximately U-shaped, namely with a top wall 19 and two side walls 20, 21. Between the side walls 20, 21, two blocks 22, 23 are arranged. These are on both side walls 20, 21 so far spaced that between the blocks 22, 23 on the one hand and the side walls 20, 21 on the other hand, a channel 24 for the cords 17, 18 is formed. As in Fig. 2 it can be seen, the one string 17 is guided past the one side of the blocks 22, 23, namely through the channel 24 between the blocks 22, 23 and the side wall 21, and the other cord 18 through the other channel 24 between the blocks 22, 23 and the side wall 20.

The blocks 22, 23 are threaded through bores 25 and 26, which extend transversely to the longitudinal direction of the cords 17, 18. In the side wall 21, a bore 27 is provided, which is aligned with the threaded bore 25 in the block 22. In the side wall 20, a further bore 28 is provided, which is aligned with the threaded bore 26 in the block 23. Through the holes 27 and 28 can each screw a grub screw 29, 30 in the threaded holes 25 and 26 respectively.

At the bore 27 in the side wall 21 opposite side wall 20, a blind bore 31 is provided which is aligned with the threaded bore 25 and thus to the bore 27. In the same way, the bore 28 opposite a blind bore 32 is provided on the side wall 21, which in turn is aligned with the threaded bore 25 and the bore 28.

The cords 17, 18 are now clamped in the upper part 11 as follows: The cords 17, 18 are inserted into the channel 24 provided for them and pulled to the desired tension, that is, adjusted to the desired length. Now, the grub screw 29 and 30, which may be previously used in the threaded bore 25 and 26, further screwed until its facing the blind bore 31 and 32 facing ends into this blind hole 31, 32. As a result, the respective cord 17, 18 is deflected by the edges of the blind bore 31 and 32 on the front side of the maggot bore and clamped. The blind holes 31, 32 are fitted for this purpose to a corresponding bore diameter to the grub screws 29, 30.

The in 3 and 4 shown cord holder 33 is formed analogous to the cord holder 10. The same parts are therefore designated here by the same reference numerals. The cords 17, 18 are clamped here in the same way as the cord holder 10.

However, the cord holder 33 differs from the cord holder 10 in that here a lower part 34 has been used, as it has previously been used in the known cord holders on which the strings still need to be knotted. The upper part 35 has on its underside a pocket 36, by means of which the upper part 35 can be pushed onto the lower part 34 in a conventional manner.

The cord holder 33, specifically its upper part 35, but is also formed in a special way in other respects. The upper part 35 is able to hold a movable rail 36 of a shading system, in particular a plisse, by clamping. In particular, in pleats, in which the curtain is arranged between two movable rails, it happens that when completely pushed up upper movable rail 36 due to gravity again slightly sags down, so that between the window reveal and the upper rail 36, a light gap , The same thing can happen if a lower movable rail 36 is pulled all the way down. This is the result of a certain resilient restoring force of the pleated fabric. The clamping between rail 36 and cord holder 33 and its upper part 35 takes place via an end face retracted into the rail 36 end cap 37 (see Fig. 7 ). The end cap 37 has on its underside a pocket 38, which is chosen in terms of their dimensions so that in them the upper part 35 of the cord holder 33 can be used. At its free edge into the pocket 37, an approximately U-shaped spring clip 39 is inserted. The resilient strap has inwardly directed bays 40. With these bays 40, the resilient bracket 39 engages behind projections 41 on the upper part 35 of the cord holder 33 with the rail 36 completely closed. The area of the side walls 20, 21, ie the area facing the rail 36, which is located above the projections 41, is provided with obliquely directed shoulders 42 provided, which run in a wedge shape towards the rail 36 to each other. When the rail 36 is fully closed, the bays 40 initially slide along the shoulders 42 and widen until they snap behind the projections 41. The rail 36 is now held in the fully closed position on the cord holder 33.

Even if this in Fig. 1 and 2 is not expressly drawn so, of course, the cord holder 10 shown there may of course be analog, so that he is also able to hold the rail 36.

The end cap 37, which in FIGS. 5 and 6 drawn again in more detail, has a slot 43 in its front side. The slot 43 is oriented so that it is open when mounted pleated in the direction of the cord holder 33 direction (please refer Fig. 7 ). The cords 17, 18 are thus deflected from the bottom of the slot 43. Since at this point an increased friction occurs, a wear-resistant slider 44 is inserted into the slot at this point, which end face in the slot 43 and in the bottom of the slot 43 can be inserted, as in Fig. 5 is indicated. The slider 44 may be made of any wear-resistant material, preferably a wear-resistant plastic.

The wear resistant material for the slider 24 is comparatively expensive and only available in a limited color palette, currently only white or gray. In order nevertheless to have a wide range of colors available and thus the slider 24 does not distractively color sets, the visible end face of the end cap 37 with a cover, not shown, provided.

The in the Fig. 8 to 10 shown cord holder 45 has an upper part 46 and a lower part 47. These can be, as in Fig. 9 indicated, plug together into a closed housing in which the actual cord holder 48 is arranged. The actual cord holder 48 has, analogously to the cord holder 10, a middle block 49, on the two sides of which channels 50 are arranged. In these channels 50 in turn strings 51, 52 can be inserted and clamped by means of grub screws 53.

Bulges 54 in the upper part 46 and the lower part 47 form when the upper part 46 and the lower part 47 are closed (see FIG Fig. 8 ) 55 passages for the cords 51 and 52. In each case a further bulge 56 in the upper part 46 and lower part 47 form a passage 57 for an operating cord 58. This is, as in Fig. 10 recognizable, held in the passage 57 by means of a node 59.

Fig. 11 and 12 show a inserted into a movable in the present case rail 60 of a pleated cord holder. It is particularly advantageous here that it is an identical cord holder for the already described above, actual cord holder 48, so that storage is minimized. The actual cord holder 48 is here clamped in the movable rail 60 and serves to hold straps 61 and 62 on the movable rail 60th <B><u> REFERENCE LIST: </ u></b> 10 cord holder 51 line 11 top 52 line 12 lower part 53 grub screw 13 bag 54 bulge 14 head Start 55 execution 15 drilling 56 bulge 16 screw 57 execution 17 line 58 operating cord 18 line 59 thickening 19 upper wall 60 rail 20 Side wall 61 line 21 Side wall 62 line 22 block 23 block 24 channel 25 threaded hole 26 threaded hole 27 drilling 28 drilling 29 grub screw 30 grub screw 31 blind hole 32 blind hole 33 cord holder 34 lower part 35 top 36 rail 37 endcap 38 bag 39 spring clip 40 bay 41 head Start 42 shoulder 43 slot 44 slide 45 cord holder 46 top 47 lower part 48 cord holder 49 block 50 channel

Claims (8)

1. A cord retainer for a cord (17, 18), in particular a tension cord, of a screening device having a movable rail (36), in particular pleated blind, roller blind, in particular roman blind or jalousie, wherein the cord (17, 18) is non-positively clamped by means of a retainer means, in particular a screw (29, 30), in particular a grub screw, wherein a coupling element is provided on the cord retainer (10, 33), being able to interact with a complementary coupling element on the movable rail (36), so that the movable rail (36) is lockable on the cord retainer, characterized in that the cord (17,18) is clamped in the cord retainer (10) in a non-positive way by means of the retainer means, in particular the screw (29, 30), in particular the grub screw.
2. A cord retainer according to claim 1, characterized in that the cord (17, 18) is pressed by the retainer means into a recess, in particular a bore (31, 32), and thereby clamped.
3. A cord retainer according to claim 1 or 2, characterized in that a separate retainer means is assigned to each cord (17, 18).
4. A cord retainer according to any one of claims 1 to 3, characterized in that channels (24) for one or more cords (17, 18) are provided on both sides of a block (22, 23) for receiving the retainer means.
5. A rail having complementary coupling elements, by means of which the rail is lockable on a cord retainer (10, 33) according to any one of claims 1 to 4, characterized in that the complementary coupling elements are each assigned to a respective end cap (37).
6. An end cap of a movable rail (36) of a screening device having coupling elements for locking the movable rail (36) on a cord retainer (10, 33) according to any one of claims 1 to 4 of the screening device, characterized in that the coupling element is a spring clip (39) engaging behind a protrusion (41) on the cord retainer (10, 33).
7. An end cap according to claim 6, characterized by a pocket (38) in which the cord retainer (10, 33) is arranged in the engaged condition of the movable rail (36).
8. A screening device having a cord retainer (10, 33) according to any one of claims 1 to 4 and/or having a rail according to claim 5 and/or having an end cap (37) according to any one of claims 6 or 7.

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