EP2233679A1 - Venetian blind for triangular windows - Google Patents

Abstract

The venetian blind (10) has lamellas (20) arranged between an end rail and an upper rail. The lamellas and the end rail are fastened to the upper rail by a lamella joint and a rail hinge respectively, where the end rail is connected to a drive. The lamellas are moved to the end rail by pivoting the end rail from an operating position into a non-operating position around the rail hinge. The lamellas and the end rail run parallel to a window sill (22) in a horizontal direction. The drive comprises a blind cord that is mounted at an engagement unit of the end rail.

Description

The present invention relates to a Raff slat blind according to the preamble of patent claim 1.

The company Warema offers under the name oblique venetian blinds Raff slat blinds, which are suitable for windows whose windowsill and lintel are at an acute angle to each other. These slanted external venetian blinds have a top rail on the side of the window sill and a bottom rail which is likewise fixedly arranged on the windowsill, with a lateral guide for the slats in the form of a stainless steel rod or a stainless steel strand running between these two rails at both ends. The lamellae are always aligned parallel to one another and parallel to the upper side rail on the side of the lintel and are raised by means of two elevator belts from the operating position into a gathering position or lowered in the opposite direction.

It is an object of the present invention to provide a generic Raff-slat blind which is suitable for triangular windows and whose slats may have a direction other than a direction parallel to the sill-side support.

This object is achieved with a Raff slat blind, which has the features of claim 1.

In an inventive Raff lamellar store all slats and the end rail in the operating position, for example, parallel to a sill, in particular extend in the horizontal direction. This also allows aesthetically pleasing solutions in which the lamellae, in the operating position, run in the same direction as the lamellae of generally known Raff slat blinds for quadrilateral windows.

In the inventive Raff slat blind keep the lamellae when moving from the operating position in the gathering position, as is common practice, a parallel to a longitudinal direction, but each slat and the end rail is a her own stationary joint in the direction of the window lintel side support swung to (up).

The sill can be made closed because neither the end rail nor slats must be lowered into it, which is particularly advantageous for outdoor installation. Next, the lamellae package or the stack of lamellae, together with the end rail by means of a lintel cover or a gallery against environmental influences, can be particularly well protected in a gathering position without the lintel cover or gallery having to be dimensioned particularly large.

Particularly preferred embodiments of the inventive Raff slat blinds are specified in the dependent claims.

The invention will be described with reference to an embodiment shown in the drawing.

It shows purely schematically:

Fig. 1

a side view of a mounted on a triangular window Raff slat blind in the extended end position and thus in the operating position;

Fig. 2

the Raff slat blind Fig.2 with removed lintel cover in gathering position and thus in retracted end position;

Fig. 3

the Raff slat blind Fig.1 with removed lintel cover in a transitional state, which shows a movement position between contracting and operating position;

Fig. 4

in longitudinal view of a blade with end-side guide member and fin joint and Stapelzentrierelement;

Fig. 5

in plan view, a lamella together with end-side guide member and vane joint and Stapelzentrierelement;

Fig. 6

in frontal view a blade in operating position in various possible position relative to its longitudinal axis;

Fig. 7

a cross section through a guide rail together with the engagement member of the end rail;

Fig. 8

in a spatial representation of the upper part of the upper rail with drive and a blade in the operating position; and

Fig. 9

in spatial representation, the upper part of the upper rail with drive and disk pack in Raffstellung.

The following is based on the FIGS. 1 to 9 a preferred embodiment of an inventive Raff slat blind 10 described.

FIG. 1 shows a suitable for outdoor Raff slat blind 10, which is attached to the outward-facing side of a triangular window 12 at the lintel 14 and left-side soffit 16. In the area of the lintel 14 is a lamellar box 18 from which lamellae 20 extend in a vertical sequence in the direction parallel to the horizontal sill 22. The fins 20 are connected by means of a flexible support member 24 firmly together and thus form a coherent disk set 26th

On the underside of this disk set 26 is limited by a likewise in the operating position parallel and horizontally oriented end rail 28.

Because in Fig. 1 the entire triangular window 12 is covered by the disk set 26 and the end rail 28 is in the final position in the immediate vicinity, preferably even directly in almost full-surface investment and at least approximately parallel to the horizontally oriented window sill 22, is the Raff lamella blinds 10 in their so-called operating position. In this operating position shown, the slats 20 are always parallel to the end rail 28 and thus parallel to the sill 22 and thus aligned horizontally.

The Fig. 1 shows the slats 20 in a particular operating position, the so-called open position, in which the slats 20 are aligned at right angles to the window surface of the triangular window 12. The vertically uniform distances between the slats 20 in the Operating position according to Fig. 1 are ensured by the vertically extending support member 24, which is formed in the present embodiment by two pairs of flexible support cords 34, wherein also fastener tapes would be possible.

The lamellae 20 each have different lengths, wherein the difference in length from one lamella 20 to the adjacent lamellae 20 is always constant in terms of amount. In this case, the length of the slats 20 within the disk pack 26 increases continuously from top to bottom and is determined by the dimension of the triangular window 12 and the predetermined position of the slat 20 in the operating position.

The Raff lamellar store 10 further has a side of the body - in the Fig. 1 to 3 and 8th left of the triangular window 12 - vertically mounted guide rail 38, which ensures the guidance and alignment of the disk pack 26 sections and the end rail 28 both during movement, as well as in the operating position. As a result, a striking of the slats 20 and the end rail 28 against parts of the triangular window 12 due to lateral forces, for example by wind, prevented. The guide rail 38 is advantageously connected by means of an adjustable bridge member 40 with the lamella box 18, to ensure a corresponding positioning and alignment with this.

In the preferred embodiment according to Fig. 1 the Raff slat blind 10 is the same in the reveal 16 of the triangular window 12 the same side introduced that the lamella box 18 almost flush with the Outside surface of the supporting structure, such as a masonry, concludes, and the window frame is not or only slightly covered.

The lamella box 18 also includes a lintel cover 44, as in FIG Fig. 1 shown, which is in contour and dimension advantageously matched to the lintel 14 and its associated with the soffit 16 and the sill 22 connection angles.

Fig. 2 shows the Raff slat blind 10 with the plate pack 26 in a so-called Raffstellung and thus in the retracted state, wherein the lintel cover 44 of the lamella box 18 is not shown. In this gathering position, the slats 20 are brought into contact with each other as soon as possible, and the slat pack 26 is in its most compact, stack-like formation. Each lamella 20 is due to its own weight on the underlying blade 20 and is held by this in position. The bottom slat 20 in turn rests on the end rail 28.

Along the lintel 14, an upper rail 46 can be seen, which forms the supporting frame of the Raff lamellar store 10 and is firmly attached to the lintel 14 in a known manner. It carries all the components with the exception of the guide rail 38. The upper rail 46 extends over approximately the entire length of the lintel 14 and is angled along its longitudinal side twice at 90 degrees to the window facing away from the side. The smooth-surfaced upper rail 46 thus forms in its cross-section a U-profile with unequal length, mutually parallel, legs, wherein the long leg a Rear wall 48 forms and the short leg a flange 50 for mounting the lintel cover 44 is formed. The distance between the flange 50 and the rear wall 48 determines the depth of the lamella box 18. The fensterbankseitige end side of the lamella box 18 is closed with a U-shaped end plate 52 of the same width, whereby the lintel cover 44 is additionally supported. Opposite and underside of the fin box 18 is open to allow retraction and extension of the plate pack 26 and the end rail 28.

This lamella box 18 is dimensioned such that it - as in the Fig. 2 . 3 . 8 and 9 recognizable - in its interior, in the cavity of the U-shaped portion of the upper rail 46, the most essential components of the drive 56 and the shirred plate pack 26 can accommodate. The drive 56 has, inter alia, a common electric motor, a drive output 58 and a control output 60 with control modules 62. The drive 56 corresponds to drives of Raff slat blinds in a known manner.

The drive 56 accomplishes the pivoting movement of the slats 20 and the end rail 28 from the operating position to the contracting position and back by the electric motor acts on the support output 58 and thanks to the shaft and the Doppelkardangelenk on an elevator pulley 64, which is aligned with the guide rail 38.

The control output 60 operates the support member 24, by virtue of its two control modules 62, as in the Fig. 8 it can be seen, in each case a pair of support cords 34 moves vertically and in opposite directions up and down. Below the drive 56 is on the rear wall 48 a support rail 68 with Angled profile arranged such that one of the two flanks protrudes at right angles. In this case, the support rail 68 extends approximately diagonally over almost the entire length of the upper rail 46, the same side of the upper end to the lower end window bank side. The end rail 28 limits the disk set 26 on the underside and closes with the support rail 68, which limits this upper side, an angle, which assumes a maximum value in the operating position and a minimum value in contracting. This is decisive for the alignment of the support rail 68 relative to the upper rail 46 and is dependent on the assumed parallelism of the end rail 28 and the geometry of the shirred plate pack 26th

The support rail 68 is in several parts, in the present case in three parts, executed. The individual parts are spaced apart from one another at those points at which the support cords 34 connected to the control modules 62 intersect the support rail 68 and if at all an improved accessibility to the installed drive 56 should be ensured. Alternatively, a one-piece support rail 68 would be conceivable, which has provided corresponding recesses for the support cords 34.

At the bottom of the protruding edge of the support rail 68, and thus in the direction of the triangular window 12, the uniformly distributed and different lengths slats 20 are frontally pivotally mounted by means of a respective finned joint 70, wherein the pivot axes 73 are aligned at right angles to the rear wall 48, so that each single lamella 20 pivotal about its horizontal pivot axis 73 and parallel to the triangular window 12, starting from the Raffstellung in the Operating position and back, can perform.

On the underside, the disk set 26 is limited by the end rail 28, which is articulated by means of a trained on the end plate 52 end rail joint 74, vertically adjacent to the sill 22, pivotally on this. The pivoting movement takes place in the plane of the pivotal movement of the disk set 26, the end rail 28 in the operating position according to Fig. 1 in a position parallel to the sill 22 and in the present embodiment can even come into contact with it. In the gathering the end rail 28 is at least approximately aligned parallel to the upper rail 46 and fills the open bottom of the fin box 18, while maintaining a circumferential clearance as possible. This results in a harmonious appearance in re-creation and reduces the risk of internal pollution and the intrusion and nesting of living beings from the environment.

The light-side guide rail 38 has a C-shaped cross-section, whereby a guide channel 78 is formed with a guide gap 80. With this guide channel 78, the end rail 28 is permanently engaged by means of an attached at the free end side in the longitudinal direction Eingrifforgans 82 which carries a guide member 82 in engagement. The engagement member 82 of the end rail 28 passes through the guide slot 80, wherein in the present case, as a guide element 82 on both sides of the Eingrifforgans 82 a pair of rollers 84 'is used, which is trapped within the guide rail 38 in the guide channel 78. Alternatively, however, sliding elements or a sliding shoe would be conceivable.

Since the end rail 28 is limited on the one hand by the end rail joint 74 to a single rotational degree of freedom, and on the other hand with the guide member 82 in the guide channel 78 is engaged, it is necessary that the end rail 28 is telescopically, since this starting from the tucking position in the Pivoting movement in the operating position must adjust their length to the geometric conditions, and thus steadily shortened.

An elevator belt 88 is set in motion by means of the elevator pulley 64 mounted on the upper rail 46 in close proximity to the Leibbe, and driven by the load-bearing output 58, and thereby wound up and unwound. With the other end, the elevator belt at the extendable end of the end rail 28, preferably on the engagement member 82, fixed and arranged in the guide channel 78. The end rail 28 and with it the disk pack 26 are held by the drive 56 in the upper system and thus in the Raffstellung, whereby an uncontrolled pivoting of the end rail 28 together with the disk pack 26 from the gathering position is prevented in the operating position due to gravity.

So that this is always the case when the drive 56 is not activated, there is - as is generally known - a locking device or preferably a self-locking device.

Also, the slats 20 have, analogous to the end rail 28, a front-side engaging member 82 which engages in the guide gap 80. As Fig. 2 . 3 and 8th However, show the slats 20 are not permanently with the guide rail 38 in interaction, because the fixed in contrast to the end rail 28 length of each Slat 20 causes the engagement member 82 engages only partially in the guide gap 80. At any rate, there is no cooperation in the preparation.

Since during the pivoting movement from the gathering position into the operating position, each slat 20, which can not be telescoped, must be able to continuously engage with its engagement member 82 in the guide gap 80 and retract again when returning, the engagement member 82 must not be caught by a guide element 84 in the guide channel 78 be, and is therefore formed in the present case by a longitudinal direction of the blade 20 aligned guide pin 90. This has a cylindrical portion and preferably tapers towards the free end, comparable to a cone or a truncated cone, as in the 4 and 5 shown. In addition, the guide pin 90 may be flattened on top and bottom so that when entering or extending the slats 20 occurring at most, temporary contact receiving adjacent guide pin 90 no lateral slippage, and thus no jamming the same in the guide channel 78 may result.

In addition to the tapered configuration of the guide pin 90, the guide rail 38 may be in the required range to assist in the insertion process, as shown in FIG Fig. 7 dash-dotted line is shown, preferably in an overhead section, with a, in the direction of the guide gap 80 towards narrowing, insertion 92 be equipped.

The engagement of each blade 20 takes place due to geometric conditions each at a different location of the guide gap 80. The guide gap 80 offers the lamella 20 is centered transversely to its longitudinal direction, but not in its longitudinal direction.

Each support cord 34 is attached to each blade 20 while maintaining equal sections. Basically, the support cord 34 unfolds its effect exclusively when a blade 20 is in its operating position. As soon as she leaves, the carrying line 34 loses its function. It is stretched in the operating position and aligned vertically aligned, in gathering when the slats 20 abut close to each other, the support cord 34 is bundled in loops of the same length between the individual slats 20.

The carrying cord 34 has essentially two tasks: First, it holds in the operating position, the disk set 26 against gravity in a horizontal position, taking over the supporting function, which is completely taken over in the gathering position and on the way there successively from the elevator belt 88, and directs the weight via control modules 62 to the support rail 68 on. And secondly, it allows - in a known manner - a simultaneous rotation of all slats 20 with respect to their own longitudinal axes 94.

Since the flexible support members 24 can act only on train, a pair of support cords 34 is provided for a controlled rotational movement in both directions about the longitudinal axis 94 of each blade 20. These grip the respective lamella 20 on the window and side facing away from the window symmetrically and opposite each other in the region of their longitudinal edges 96. In the Fig. 1 to 3 In each case, only the side facing away from the supporting line 34 is visible, the opposite carrying cord 34 is each obscured while Fig. 7 a pair of carrying cords 34 shows. In principle, a single pair of carrying cords 34 would be sufficient for the functionality, but due to the length of the fins 20, there are often several pairs, in the present embodiment there are two pairs.

The first pair of support cords 34 is moved by a first control module 62 of the control output 60, each further pair of support cords 34 of a further control module 62. These control modules 62 occur only in a known manner in the operating position and in each case simultaneously in action.

In Fig. 3 It can be seen that a part of the slats 20 has already reached the horizontal end position by pivoting the end rail 28 about its end rail joint 54 from the tucking position in the direction of the operating position. In this case, a lamella 20 passes after the other due to the downwardly pivoting end rail 28 and thanks to gravity by a pivoting movement about the pivot axis 73 of the pivot joint 72 of their respective slat joint 70 in its final position. On the hinge-facing side, it is held by means of the support cords 34 in a horizontal position and thus in its operating position against gravity, the sections of the support cords 34 between the slats 20 are tensioned one after the other.

Upon return to the shirring position, the end rail 28 moves upward due to the powered elevator belt 88, pivoting about the end rail joint 74. In this case, trapped in the guide channel 78 roller pair 84 'moves vertically upwards, the end rail 28 extends telescopically and , 'collects' during the pivoting movement in the direction of the gathering successively the individual slats 20 by being stacked on top of each other successively. In this case, the parallel spaced lamellae 20 first come into contact with each other in the region of the frictional side end, before they rest against each other in a gathering position.

As in Fig. 3 one slat 20 after the other with its guide pin 90 loses contact with the guide gap 80. In order to bring successively to each other to a disk pack 26 to be stacked slats 20 on top of the end rail 28 in a mutually defined and stable position has the end rail 28 at its, the end rail joint 74 facing away and telescopically extendable end, perpendicular to their main orientation and in the direction of the slats 20 projecting tentacles 98. During the pivoting movement in the gathering these center the receiving slats 20 laterally and support the disk pack 26 side. Due to the geometry and kinematics of the movement, the tentacles 98 are in phase shortly before until shortly after the single fin 20 contacts the adjacent fin 20.

In Fig. 4 the known cross section of a lamella 20 is shown in the longitudinal direction. This complex cross section has the disadvantage that the lamellae 20 come into abutment only in the region of their outer edges, the stacking can be unstable, and the lamellae 20 could thereby easily slip or tilt. To prevent this, have the slats 20 in the region of its longitudinal axis 94 at its top, as well as in Fig. 4, 5 and 8th shown, additional Stapelzentrierelemente 100, which preferably in their, the lamellar joint 70 facing away from the end region are centrally mounted, and on which in an engaged position adjacent lamella 20 is applied, whereby in consequence the stability of the shirred lamella packet 26 is improved.

In Fig. 1 the slats 20 of Raff slat blind 10 are fully extended and shown in the operating position. The illustrated position of the fins 20 is referred to as an open position, the fins 20 are aligned approximately at right angles to the window surface and thus allow the maximum transparency and the maximum light transmission in the operating position. The open position corresponds to the neutral starting position, which the lamellae 20 have when they are pivoted from the tucking position to the operating position. As with known slat blinds, it makes sense in the present case to make the passage of light through the Raff slat blind 10 adjustable. For this purpose, it is necessary for each slat 20 to be able to execute a rotational movement about its longitudinal axis 94 in addition to the pivoting movement about the pivot axis 73 of its slat joint 70.

In order to allow a rotational movement about the longitudinal axis 94, the blade 20 is rotatable at its front ends, and aligned with the longitudinal axis 94, stored. The reveal side can be omitted because of the guide pin 90, a rotary joint, since the rotation is guaranteed.

In contrast, the lamellar joint 70 includes in addition to its pivot joint 72 - as in the present case in Fig. 5 shown - also a rotary joint 104, the axis of rotation 106 coincides with the longitudinal axis 94 of the corresponding blade 20 in alignment. The hinge side is the Slat joint 70 fixed to the blade 20, swivel joint side firmly connected to the support rail 68. In so doing, the lamellar joint 70 absorbs tensile forces acting in the direction of the axis of rotation 106 and the longitudinal axis 94 which is aligned therewith.

Alternatively, instead of a combination of a separate swivel joint 72 and a separate swivel joint 104, each slat joint 70 can also be realized by means of ball joints or cardan joints.

The elevator belt 88 and the support cords 34 are set in motion by the drive 56, which has an electric motor and sequentially controls its transmission-separate outputs 58 and 60 such that upon activation of the support output 58 in the gathering position only the end rail 28, and with her the Disc pack 26 are pivoted by means of elevator belt 88 in the operating position. With sustained activation of the motor after reaching the end position of the support output 58 is stopped and the control output 60 is activated, whereby the slats 20 of the, due to the pulling position, open position as a starting position continuously rotate into the closed position.

For this purpose, the support cord 34 is extended on the longitudinal edge away from the window 96 of the blade 20 by the associated control module 62 to the same extent as the support cord 34 is shortened vis à vis on the window-facing longitudinal edge 96. Thus, each slat 20, as in Fig. 6 schematically shown to the maximum possible angle, which may be up to 90 degrees, pivoted, and there is the so-called closing position and the triangular window 12 is darkened, the light transmission tends to zero. In this case, the longitudinal edge 96 of a lamella 20 comes with the opposite longitudinal edge 96 of the adjacent lamella 20 in the immediate vicinity or even in abutment. Since the support cords 34 each connect the fins 20 at a fixed distance, all the fins 20 simultaneously perform the same rotational movement. Between the open position and the closed position any intermediate positions are conceivable. The longitudinal axis 94 always remains in a spatially constant position.

When activating the drive 56 in the opposite direction of this process runs in reverse order, the slats 20 are only rotated from the closed position to the open position and only then get the slats 20 thanks to the pivoting of the end profile 28 in the tucking back.

Due to the design of the slats 20 can perform their rotational movements about their longitudinal axes 94, however, only in the operating position and in the present case only when fully covered triangular window 12.

The end profile 28 itself is not connected to the support members 24 and can not perform any rotational movement about its longitudinal axis. Its end rail joint 74 allows only a pivoting movement and no rotational movement.

The Raff lamellar blind 10 shown can be placed in a similar embodiment instead of inside of the inside of the torso on the outside of a supporting framework, such as masonry or in an embodiment window inside the application.

The present invention of a Raff-Lamellenstore 10th is particularly suitable for all triangular windows 12 having an angle of greater than or equal to 90 degrees between the soffit 16 and sill 22, wherein the lamella box 18 is mounted on the lintel 14, which forms the Hypothenusenseite the triangular window 12. For other triangular window shapes, combinations of Raff slat blinds 10 of the present type may be used.

Further, it is conceivable that instead of a drive 56 a plurality of drives are used, or a drive 56 uses two or more electric motors, so that the drives 58 and 60 are mechanically completely separated. Individual electric motors could be easily integrated into each control module 62 due to the low power required, thereby completely eliminating any mechanical connection to a main drive of the elevator pulley 64. As a result, an electric motor for the elevator pulley 64 could also be arranged differently within the lamella box 18, possibly as a common assembly with the elevator pulley. The sequential control would be realized electronically in these cases.

Claims (13)

Venetian blind for triangular window (12), comprising a sill-side upper rail (46), a end rail (28) and a plurality of fins (20) disposed between the end rail (28) and the upper rail (46) and by means of a drive ( 56) from an operating position, in which they are aligned parallel to one another, in the direction of the upper rail (46), are movable into a gathering position, characterized in that the slats (20) are each connected by means of a slat joint (70) and the end rail ( 28) are fastened to the upper rail (46) by means of a end rail joint (74), the end rail (28) is coupled to the drive (56) and the slats (20) are pivoted about the end rail joint (74) by pivoting the end rail (28) ) from the operating position into the gathering position, reach the end rail (28) in a pile-like manner and are pivoted about their slat joints (70). Raff-slat blind according to claim 1, characterized in that the end rail (28) and the slats (20) extend in the operating position at least approximately horizontally. Raff lamellar blind according to claim 1 or 2, characterized by a groove-side guide rail (38) with a in the direction of the upper rail (46) open guide gap (80), with which the end rail (28) and the lamellae (20), in Operating position, each by means of an engagement member (82) are engaged. Raff-slat blind according to claim 3, characterized in that the guide rail (38) is equipped at least in one, preferably upper portion with a in the direction of the guide gap (80) towards narrowing insertion profile (92). Raff-slat blind according to claim 3 or 4, characterized in that the end rail (28) formed telescopically and with its engagement member (82) permanently with the guide gap (80) is engaged. Raff-slat blind according to claim 5, characterized in that the guide rail (38) has a, a guide channel (78) forming, C-shaped cross section and the engagement member (82) of the end rail (28) with a guide element (84), preferably one Pair of rollers (84 ') or a shoe, which is trapped in the guide channel (78). Raff-slat blind according to claim 5 or 6, characterized in that the drive (56) comprises an elevator belt 88), which on the end rail (28), preferably on the engagement member (82) of the end rail (28) is fixed and, if a guide channel (78) is preferably present in this runs. Raff slat blind according to one of claims 3 to 7,
characterized in that the engagement member (82) of the lamellae (20) each one, preferably pointed in the free end region, at the respective lamella (20) in the longitudinal direction of this blade (20) arranged guide pin (90) which is intended to cooperate with the guide gap (80). Raff-slat blind according to one of claims 1 to 8, characterized in that on each blade (20) a band or cord-like support member (24) engages to hold in operating position, the slats (20) in mutually parallel alignment. Raff-slat blind according to claim 9, characterized in that the lamellar joints (70) in addition to their pivot joint (72) each have a pivot (104) with a rotation axis (106) which extends in the longitudinal direction of the respective lamella (20), and by the support member (24) the lamellae (20) about its longitudinal axis (94) from a closed position to an open position and back are rotatable. Raff-slat blind according to claim 10, characterized in that the lamellar joints (70) instead of separate pivot joints (72) and swivel joints (104) have ball joints or universal joints. Raff-slat blind according to one of claims 1 to 11, characterized in that lamellae (20), preferably in their the lamellar joint (70) facing away from the end portion, a lamella Stapelzentrierelement (100), on which, in Raffstellung, an adjacent lamella (20) 20) is applied. Raff-slat blind according to one of claims 1 to (12), characterized in that the end rail (28), preferably in its the end rail joint (74) facing away from end region in the direction against the slats (20) projecting tentacles (98) to when pivoting in the tying position lamellas (20) between them.

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