EP2540951B1 - Venetian blind with twistable lamellae - Google Patents

Description

The present invention relates to a slat blind according to claim 1.

Slat blinds or Rafflamellenstoren are well known. In conventional slat blinds, the slats of a slat hanging can be raised and lowered and formed tiltable. The lifting and lowering takes place via an elevator belt to which the bottom slat or rail is fastened. When the elevator belt is lifted from a fully lowered slat curtain or rolled up onto a drum, the lowest slat gathers and laminates all the slats until the entire slat curtain is stacked and fully lifted. When lowering the slat curtain first the top slat is lifted from the stack, then the second highest slat, etc. until the bottom slat hangs freely and no slats rest on the bottom slat. Such slats are usually by means of a vertical strand pair, which acts on the blade edges and is operatively connected to a rocker tiltable. The rocker is driven, for example via a driving clutch, which cooperates with the drive motor for raising and lowering the Lamellenbehangs.

The EP 0 609 541 A1 discloses a lamellar store with a rocker and two associated pairs of strands, which are arranged at a distance from each other, measured in the longitudinal direction of the lamellae. The strands of the strand pairs are each attached to attachment points on the longitudinal edges of the slats. The slat hanging can be raised and lowered by means of the elevator belts. To the incidence of light in To make a darkened room optimal, it is envisaged that the distance between the outer lamellar edges is greater than the distance of the respective inner lamellar edges between all slats. This is achieved by making the distance, measured in the vertical direction between two successive attachment points of the outer strands, greater than the corresponding distance between two successive attachment points on the inner strands.

With the slat blind according to EP 0 609 541 A1 Although the regulation of the incidence of daylight or exterior light in the vertical direction can be optimized, in the horizontal direction, however, no optimization is possible.

The aforementioned slatted blind can also be designed in a known manner as a safety slat blind which is constrained, so that it can not be opened from outside a building or window.

In conventional, forcibly guided safety slat blinds, it is not known that the incidence of light in different parts of a room can be customized. The lamellae of such safety lamellae are only tilted parallel to each other.

It is therefore an object of the present invention to provide a slat blind in which the incidence of light in different areas of a room can be regulated or adjusted in spite of lowered slat hanging.

This object is achieved with a slat blind according to claim 1. Preferred embodiments are subject of the dependent claims.

The slat blind according to the invention has a slat curtain which has a plurality of slats arranged one above the other. Each blade has two ends, a first and a second end, wherein these two ends are arranged opposite each other in the longitudinal direction. At the first end, a first end region of the lamella connects to the second end and a second end region of the lamella. The sipe gate further includes a first winding mechanism and first rocking mechanism cooperating with the first end portion of the sipes. Furthermore, the lamellar store has a second drive mechanism and second luffing mechanism cooperating in the second end region of the lamellae, which is spaced apart from the first end region in the longitudinal direction of the lamellae, tilting axes parallel to the longitudinal direction and preferably extending through the middle of the lamellae during lifting and lowering of the lamellar curtain follow a trajectory. The lamellar store also has at least one electric drive motor, which drives the elevator mechanisms synchronously for raising and lowering the lamellar suspension and for tilting the lamellae, the luffing mechanisms. The lamellae are designed to be twistable about their associated tilting axes and the first and the second luffing mechanism can be driven independently of one another in order to twist the lamellae.

Due to the selected design of the slat blind, it is possible to better adapt the slats to the circumstances. The incidence of light can be adjusted along a horizontal region of the Lamellenbehangs. If the slats are twisted, then the lamellae is divided into a translucent area and in an opaque area. In the translucent area, with maximum light transmission, the lamellae or the lamellar surfaces are aligned at least approximately horizontally or at least approximately at right angles to the movement path, which corresponds to an open position of the lamellae. In the light-impermeable region, the lamellae are aligned at least approximately vertically or at least approximately parallel to the movement path, which corresponds to a closed position of the lamellae. Both sides adjustable and arbitrary selectable intermediate positions between closing and open position of the slats are possible. The transition seen in the longitudinal direction between the two areas is fluid, that is, the lamellae twist continuously starting from the open position, in which one end portion in a closed position at the other end.

Thus, a person who is in a room, for example, adjust the light of day or outside light, so that this person is not disturbed by the light and yet no artificial electricity generated by light in the room is needed. For example, the person may or may not illuminate the part of the room that is not being used, as desired, by daylight or outdoor light.

By tilting the slats these are moved from the open position to the closed position. The movement from the closed position to the open position is also made possible by tilting.

In another embodiment, the first elevator mechanism and the first rocking mechanism are driven by the drive motor and the second elevator mechanism and the second rocker mechanism are driven by another drive motor. The two drive motors are controlled by a controller so that when synchronized control of the drive motors, the slats raised, lowered and tilted and can be wound with individual control.

The selected design of the drive by means of two drive motors and the use of a controller, the operation of the slat blind is greatly simplified. The control can be programmed accordingly, so that the slat blind is easy to operate.

For example, there are only three controls needed to use all possible functions of the slat blind. A first control element for the function "lower slats", a second control element for the function "lift slats" and a third control element for the function "twist slats". The function "tilting slats" is achieved via the actuation of the first or the second operating element, as is the case with known slat blinds.

It is conceivable to combine other lifting, lowering and tilting mechanisms, for example known rocker-arm-pair combinations, in such a way that the mentioned function of twisting the slats can be achieved.

According to a further preferred embodiment, the lamellae are made of a resistant, flexible, in particular elastic material.

This improves the durability and longevity of the slat blind.

In addition, by an appropriate choice of the material of the slats, the drives or actuators for controlling the Wippmechanismen not be so strong.

The lamellae should be resistant to fatigue on repeated twisting. To achieve this, various materials such as plastic, sheet metal, aluminum or composite materials come into question.

The lamellae preferably have a flat profile formed without ribs, which for example has an arcuate shape in cross-section or is slightly curved. Furthermore, the lamellae preferably have no edge flanging.

In a further preferred embodiment, the slats are guided or held on both sides at the ends.

The lateral guide is preferably formed directly or indirectly by means of guide rails.

The use of a lateral guide prevents the slats and thus the slat curtain from dodging in a horizontal direction when twisted or tilted.

Furthermore, this has the advantage that the lamellar store can be arranged on a building exterior side and so the weather, in particular the wind, can be suspended. Such slat blinds must also withstand storms and fluctuating temperatures.

In a further preferred embodiment, the blades are arranged at an equidistant distance from each other during lifting and lowering. Furthermore, the slats can preferably only be tilted and twisted when the slat curtain is completely lowered.

From the field of Sicherheitslamellenstoren it is known Lamellenstoren in such a way that they are arranged equidistant from each other. However, the elevator and Wippmechanismen are always synchronously driven in these known safety slats or slats blinds.

The equidistant distance has the advantage that when twisting the slats, these can not touch each other, whereby no damage to the slats is possible and no friction occurs.

The fact that the lamellae can only be tilted or twisted when the lamellar curtain is completely lowered serves to ensure stability. In addition, the construction of the elevator mechanisms and the rocking mechanisms is thereby simplified.

According to a further preferred embodiment, a rocker arm is arranged at each of the ends of the lamellae, the free ends of all luffing levers associated with the first end region being guided in a first rocker rail running parallel to the movement path and the free ends of all luffing levers corresponding to the second end region are assigned are guided in a parallel to the trajectory extending second rocker rail. The rocker rails are, preferably parallel to each other, away from the movement path and on the movement path to the slats at synchronous Move the rocker rails of the rocking mechanism to tilt and, when moving, to twist only one of the rocker rails.

The first rocker mechanism has per each lamella on a rocker arm, which is connected to the associated first end of the blade and a respective first rocker rail. The second rocker mechanism also has per lamella each a rocker arm which is connected to the associated second end of the blade and a second rocker rail through the use of a rocker rail and guided therein with their free ends rocker arms, the construction of the rocker mechanism 'relatively simple and thus durable. If necessary, the rocker mechanism can also be actuated by one or more separate actuators, independently of the two drive motors already described, due to the selected design. When using actuators, it is possible to use only one drive motor, which drives the two elevator mechanisms.

The rocker rail and the rocker arm also allow the transmission of a relatively large force on the slats. Even if the lamellae are made of relatively stiff material, twisting is possible due to the selected design of the luffing mechanism.

In a further preferred embodiment, the first and second elevator mechanism each have an endless chain and a respective scissor chain. The endless chain passes over a lower and an upper sprocket, wherein one of these sprockets is connected to the associated drive motor. The endless chain is connected to a carriage and the carriage is movable up and down along the path of travel by means of the endless chain, with one end a scissor chain is mounted on the carriage and another end of the scissors chain is mounted in the vicinity of a sprocket stationary. The lamellae are mounted on hinge points of the scissor chain so that the tilting axes run through the hinge points. In this case the trajectory is defined by the points of articulation.

The described design of the elevator mechanisms is a positive guidance of the slats or the Lamellenbehangs. The slats are stably guided and can thus protect a window or an entrance area from vandalism and burglary. By using a carriage which can be displaced along the movement path, the lifting and lowering of the lamellae takes place with little friction.

Due to the arrangement of the slats on the hinge points of the legs of the scissor chain, the slats move when lifting and lowering centered and equidistant along the trajectory. Furthermore, the scissor chain has the advantage that the lamellae can not move in the horizontal direction or in the vertical direction when the circulating chain is stationary and braked. If the rocker mechanisms are activated, the lamellas can be tilted (synchronous drive of the rocker mechanisms) or twisted (one-sided drive of one of the rocking mechanisms).

In a further preferred embodiment, the carriage moves, preferably by means of a Umhebhebels, in a lower end region of the movement path, the rocker rail along a backdrop, parallel to itself to tilt the slats from an open position to a closed position.

As a result, no separate drive for the rocker mechanisms must be used. The drive motor is, so to speak, coupled via the carriage with the rocker mechanism by means of the elevator mechanism. The backdrop ensures that the rocker rail moves smoothly and guided.

When lifting the slatted blind, the slats are first tilted back into the open position and then lifted. The rocker mechanisms and the elevator mechanisms are designed accordingly, for example with return springs.

According to a further preferred embodiment, a driver is attached to the endless chain, and this driver is guided in a recess of the along the trajectory up and down movable carriage, wherein the recess in the carriage is formed so that the car, or the driver, at fully extended slat hanging is blocked.

This ensures that the slat curtain can not be lifted manually from the outside. This corresponds to a burglar alarm.

In the lowermost, fully extended position of the slat curtain, the follower is located at the lowest point of the endless chain at the periphery of the lower sprocket.

The recess in the carriage may be formed such as arcuate that the driver can run along a first run of the endless chain in the direction of the lower sprocket, while the carriage moves in the direction of the lower sprocket, wherein subsequently the Driver can run around the lower sprocket around and then along a second run of the endless chain can move back in the direction of the lower sprocket away while moving the car again, also in the direction of the lower sprocket away. As a result, the direction of rotation of the endless chain need not be reversed in order to lower the lamellar store and then lift it again. The drive direction of the endless chain is formed reversible.

In a further preferred embodiment, all the slats are tilted from the open position into a closed position when the first and second elevator mechanisms are lowered synchronously, while in the lower end region all the slats of the slat curtain are tilted from the open position. With subsequent one-sided lifting in the end of one of the elevator mechanisms, the slats are wound.

This has the advantage that the two elevator mechanisms or the drive motors control the rocking mechanism. No additional drives are required for the rocking mechanisms.

Further, the structure and construction of the slatted blind is simplified thereby, whereby the service life and ease of maintenance is increased.

The trajectory is defined for example by guide pins which are guided in the guide rails, which are for example C-shaped in cross-section. On the other hand, it is possible to define the trajectory through the scissor chain, and indeed, as already mentioned by their points of articulation.

Reference to the accompanying schematic drawings, the invention will be explained using an embodiment.

Fig. 1

eine Ansicht einer Lamellenstore mit gesenktem Lamellenbehang, wobei sich Lamellen in einer Schliesstellung befinden;

Fig. 2

eine Ansicht der Lamellenstore aus Figur 1 mit gesenktem Lamellenbehang, wobei sich die Lamellen in einer Offenstellung befinden;

Fig. 3

eine Ansicht der Lamellenstore aus Figur 1 mit gesenktem Lamellenbehang, wobei die Lamellen in eine Richtung verwunden sind;

Fig. 4

eine Ansicht der Lamellenstore aus Figur 1 mit gesenktem Lamellenbehang, wobei die Lamellen in eine andere Richtung verwunden sind;

Fig. 5

eine Ansicht eines Aufzugs- und eines Wippmechnismus;

Fig. 6

eine Ansicht einer Scherenkette des Aufzugsmechanismus' mit einem Wagen und Klammern, auf denen Lamellen aufgesteckt werden können;

Fig. 7

eine Draufsicht auf die Klammer, an der eine Lamelle befestigt werden kann, auf die Scherenkette sowie auf einen mit der Klammer verbunden Wipphebel des Wippmechanismus; und

Fig. 8

eine Ansicht eines unteren Endes der Scherenkette mit Gelenkpunkten.

It shows:

Fig. 1

a view of a slat blind with lowered lamellar, with slats are in a closed position;

Fig. 2

a view of the slat blind FIG. 1 with lamellae lowered, with the lamellae in an open position;

Fig. 3

a view of the slat blind FIG. 1 with lowered lamellae, the lamellae being twisted in one direction;

Fig. 4

a view of the slat blind FIG. 1 with lamellae lowered, with the lamellae twisted in a different direction;

Fig. 5

a view of an elevator and a rocking mechanism;

Fig. 6

a view of a scissor chain of the elevator mechanism 'with a carriage and brackets on which slats can be attached;

Fig. 7

a plan view of the clip on which a blade can be attached, on the scissor chain and on a rocker arm connected to the bracket of the rocking mechanism; and

Fig. 8

a view of a lower end of the scissor chain with hinge points.

The FIG. 1 shows a slatted blind 10 with a multiple fins 12 having Lamellenbehang 14. The Lamellenbehang 14 is located in FIG. 1 in a lowered, fully extended state. The slats 12 are in a closed position, so that no light can pass through the slat curtain 14. In the closed position, the slats 12 or slat surfaces 17 are aligned parallel to a movement path B or, if the slatted blind 10 is vertically arranged, at least approximately vertically.

The lamellae 12 are held in the first and the second end region 18, 20 by means of clamps 22 which are respectively guided in a first or second guide rail 24, 26 arranged laterally of the lamellae hanging 14. The brackets 22 are respectively disposed on the associated first and second elevator mechanisms 28, 30. The guide rails 24, 26 are preferably made of metal, particularly preferably of aluminum. However, it is also conceivable to produce the guide rails 24, 26 from another suitable stable material.

At an upper end 32 of the slat blind 10, an upper rail 34 is arranged. The upper rail 34 is fixedly connected to the first and second guide rails 24, 26. On the upper rail 34, a diaphragm 36 on the underside, that is, on the side of the Lamellenbehangs 14, fixed. The aperture 36 may be of any desired design; preferably For example, the bezel 36 has a U-shaped cross-section to allow an electric drive motor 38 to be mounted therein. The drive motor 38 is associated with the first elevator mechanism 28, connected thereto via a first motor shaft 40 and arranged in the vicinity of the first guide rail 24. Another, electric drive motor 42 is associated with the second elevator mechanism 30, connected thereto via a second motor shaft 44 and arranged in the vicinity of the second guide rail 26. The drive motors 38, 42 are interconnected via a controller 46 and drive the connected motor shafts 40, 44, and thus the associated elevator mechanisms 28, 30, to.

By means of the elevator mechanisms 28, 30 and the drive motors 38, 42, it is possible to lift and lower the lamellae 12 along the movement path B of the tilting axes K of the lamellae 12.

A first rocking mechanism 48 is disposed in the first guide rail 24 and operatively connected to the first elevator mechanism 28. Further, a second rocker mechanism 50 is disposed in the second guide rail 26 and operatively connected to the second elevator mechanism 30. However, it is also conceivable to design the rocker mechanisms 48, 50 in such a way that the lamellae 12 can be tilted even when the lamellar suspension 14 is not completely lowered.

The FIG. 2 shows the Lamellenbehang 14 off FIG. 1 in an open position, wherein the fins 12, or the fin surfaces 17, at least Aligned at approximately right angles to the movement path B or, in a slatted blind 10, which is arranged vertically, are aligned at least approximately horizontally. In this case, light can pass through the open surfaces 54 which are arranged between the lamellae 12 which are in the open position. In order to move the slats 12 from the closed position to the open position, the first and second rocking mechanism 48, 50 are actuated. In this case, the controller 46 (see FIG. 1 ) for use.

The controller 46 is programmed so that it synchronously drives for raising and lowering the Lamellenbehangs 14, or the fins 12, the drive motor 38 and the other drive motor 42. To tilt the slats 12, the controller 46 also activates synchronously the drive motors 38, 42 which are coupled to the two rocker mechanisms 48, 50. Further, the controller 46 is designed so that the drive motor 38, and thus the first rocker mechanism 48, independently of the further drive motor 42, and thus the second rocker mechanism 50, or the further drive motor 42 can be driven independently of the drive motor 38. Due to this function, the slats 12 can be wound on both sides, as shown in the Figures 3 and 4 is shown. In this case, a torsional force is applied to the slats 12.

In FIG. 3 It is shown how the first rocking mechanism 48, starting from the closed position of the fins 12, has been activated to move the fins 12 in the first end portion 18 in an open position. The second rocker mechanism 50 has not been actuated and is still in the closed position. Thus, the open ones Surfaces 54 ', through which the light can pass, arranged on the side of the Lamellenbehangs 14, which is closer to the first end portion 18. About 40% of the surface of the Lamellenbehangs 14 can be in this position of the slats 12 light, in particular day or outside light pass through.

This makes it possible to shade a room on one side and to illuminate the other side with day or outside light. This makes it possible to avoid the use of artificial light and to better adapt the lighting inside the room by the day or outside light to the needs.

In FIG. 4 It is shown how only the second rocker mechanism 50, starting from the closed position of the fins 12, has been activated in order to move the fins 12 in the second end region 20 into an open position. In this position of the fins 12, the open surfaces 54 "through which the light or daylight can pass are located on the side of the finned curtain 14 which is closer to the second end region 20. Again, about 40% of the surface of the finned curtain 14 in this position of the slats 12 light or daylight pass through.

FIG. 5 shows a plan view of a possible embodiment of the first (or second) guide rail 24 (or 26). This drive is well known and has been used for some time, especially in the field of burglar-resistant safety slat blinds.

In the guide rail 24, the first elevator mechanism 28 and the first rocking mechanism 48 are arranged. The second guide rail 26 is identical, but mirrored accordingly formed. For the sake of simplicity, the mode of operation will be explained below with reference to the first elevator 28 and rocker mechanism 48.

The first elevator mechanism 28 has an endless chain 56. The endless chain 56 extends over a lower sprocket 58 and over an upper sprocket 60. The upper sprocket 60 is connected to the first motor shaft 40 and thus by the drive motor 38 (both in FIG FIG. 5 not shown). At the endless chain 56, a driver 62 is attached to a chain link 64. The driver 62 is in a recess 66 of a carriage 68, which is U-shaped and the driver 62 at least approximately positively in the U-shaped recess leads. The carriage 68 has an approximately rectangular disc 70, wherein the recess 66 is formed in this disc 70. On the disc 70 four rollers 72 are arranged, which guide the carriage 68 in the guide rail 24. The disk 70 is preferably made of metal. The carriage 68 can be raised and lowered along the movement path B. By the U-shaped recess 66 is prevented with completely extended Lamellenbehang 14, that the driver 62 and thus the endless chain 56 can be moved by an external force. The Lamellenbehang 14 is blocked in this position.

On the carriage 68, a lower end 74 of a scissors chain 76 is attached. The scissors chain 76 has a plurality of legs 78, which are connected at their ends 80 to peripheral hinges 82 hingedly connected to the next leg 78 '. Next, the legs 78, respectively in the longitudinal direction of the Leg 78 at least approximately in the middle, with an associated, diagonally offset leg 78 "connected in a hinge point 84. The tilt axes K of the fins 12 (in FIG. 5 not shown) also pass through these hinge points 84. An upper end of the scissor chain 76 is fixedly mounted on a fixed, immovable disc 88. The stationary disc 88 is preferably formed of metal. In order to allow the necessary movement of the scissors chain 76, the uppermost, the stationary plate 88 facing leg 90 slots 92.

The FIG. 6 shows the scissors chain 76 with the mounted in the hinge points 84 brackets 22, formed on the uppermost legs 90 slots 92 and connected to the scissors chain 76 at the lower end 74 carriage 68th

The brackets 22 on which the slats 12 (in FIG. 5 not shown), have rocker arms 94 which are in FIG. 7 are shown on. The rocker arms 94 are rotatably connected to the brackets 22, and thus rotatably connected to the brackets 22 arranged fins 12. The rocker arms 94 have a lever arm 96. At the free end 98 of the lever arm 96, a guide plate 100 is arranged.

The guide disks 100 of all rocker arms 94, which are associated with the first end portion 18 engage in a first rocker rail 102, the in FIG. 5 shown is one. The guide disks 100 of all rocker arms 94 which are assigned to the second end region 20 engage in a second rocker rail 102 'which is in FIG. 1 is implied, a. The longitudinal axis of the lever arm 96 extends in the Closing position and the open position of the slats 12, obliquely to the longitudinal axis L of the rocker rail 102. When the carriage 68 is moved into a lower end portion 104 of the path B, then this converts a Umstellhebel 106, wherein the rocker rail 102 along several scenes 108 parallel to the path of movement B is moved. Characterized the brackets 22 are rotated by means of the guided in the rocker rail 102 rocker arm 94 by an angle of approximately 90 °, whereby attached to the brackets 22 fins 12 are moved from the open position to the closed position. The arrangement of multiple scenes 108 over the entire length or height of the path B ensures that the rocker rail 102 moves parallel to the movement path B.

The lamellae 12 can only be moved into the closed position when the carriage 68 is located in a lower end region 104 of the movement path B.

Further, due to the described construction of the first elevator mechanism 28 and the first rocker mechanism 48, the fins 12 are always arranged at an equidistant distance from each other.

Since the first guide rail 24 is constructed with the first elevator mechanism 28 and the first rocker mechanism 48 and the second guide rail 26 with the second elevator mechanism 30 and the second rocker mechanism 50 as described above, it will now be apparent that when the rocker mechanisms 48, 50 are driven one-sidedly the lamellae 12 can be twisted when both carriages 68 of the elevator mechanisms 28, 30 or the rocking mechanisms 48, 50 in a lower end region 104 are located.

Alternatively, it is of course possible, the guide rails 24, 26 to rotate through an angle of 180 ° and so, for example, in a facade of a building to install. The driven upper sprocket 58 would then be down.

The FIG. 8 shows the lower end 74 of the scissor chain 76 and one of the hinge points 84. The rocker arm 94 (in FIG. 8 not shown) extends through the hinge point 84, but is mounted in the hinge point 84 so that it is rotatable relative to the hinge point 84.

It is also conceivable to design the first or second rocker mechanism 48, 50 such that the rocker mechanisms 48, 50 can be actuated by a driving clutch, which is connected, for example, to the first or second motor shaft 40, 44.

Alternatively, it is also possible to use as rocker mechanisms 48, 50 strand pairs, each with a rocker as in conventional lamellar blinds 10, which are more likely to be used on building inside. It would then only be the appropriately trained rocker mechanisms 48, 50 can be driven separately.

In order to further optimize the incidence of light, it would theoretically be conceivable to use the function of the lamella blind according to the EP 0 609 541 A1 to be superimposed with that of the present invention. With respect to this function, the disclosure of the EP 0 609 541 A1 involved by reference. For this purpose, in the first place, the angle between the longitudinal direction of the lever arm 96 and the parallels to the slat surface 17 of each individual would have Combination of rocker arm 94, bracket 22 and lamella 12 are adjusted accordingly.

Claims (10)

1. Slatted blind having a slatted-blind body (14), which has a plurality of slats (12) arranged one above the other, having a first lifting mechanisms (28), and first tilting mechanism (48), interacting with a first end region (18) of the slats (12), and having a second lifting mechanism (30), and second tilting mechanism (48), interacting with a second end region (20) of the slats (12), said second end region being spaced apart longitudinally from the first, end region (18) of the slats (12), wherein tilting axes (,K) of the slats (12), said axes running in the longitudinal direction of the slats (12), follow a movement path (B) when the slatted-blind body (14) is being raised and lowered, and having at least one electric drive motor (38), which synchronously drives the lifting mechanisms (28, 30), for the purpose of raising and lowering the slatted-blind body (14), and the tilting mechanisms (48, 50), for the purpose of tilting the slats, characterized in that the slats (12) are designed such that they can be twisted about their associated tilting axes (K), and in that the first and the second tilting mechanisms (48, 50) can be driven independently of one another in order to twist the slats (12).
2. Slatted blind according to Claim 1, characterized in that the first lifting mechanism (28) and the first tilting mechanism (48) are driven by the drive motor (38), and in that the second lifting mechanisms (30) and the second tilting mechanism (50) are driven by a further drive motor (42), wherein the two drive motors (38, 42) can be activated via a control means (46) such that, in the case of the drive motors (38, 42) being activated in synchronized fashion, the slats (12) are raised, flowered and tilted and, in the case of said drive motors being activated individually, the slats (12) are twisted.
3. Slatted blind according to Claim 1 or 2, characterized in that the slats (12) are produced from a resistant, flexible, in particular elastic, material.
4. Slatted blind according to one of Claims 1 to 3, characterised in that the slats (12) are guided and/or retained at both ends.
5. Slatted blind according to one of Claims 1 to 4, characterized in that the slats (12) are spaced apart from one another in equidistant fashion during the raising and lowering operations, and in that the slats (12) can be tilted and twisted only when the slatted-blind body (14) is at least more or less fully lowered.
6. slatted blind according to one of Claims 1 to 5, characterized in that a tilting lever (94) is arranged at each of the ends of the slats (12), wherein the free ends (98) of all the tilting levers (94) which are assigned to the first end region (18) are guided in a first tilting rail (102) running parallel to the movement path (B) and the free ends (98) of all the tilting lovers (94) which are assigned to the second end region (20) are guided in a second tilting rail (102') running parallel to the movement path (B), and the tilting rails (102, 102') can be moved away from the movement path (B) and towards the movement path (B) so as to give rise to the slats (12) tilting, when the tilting rails (102, 102') of the tilting mechanisms (48, 50) are moved synchronously, and twisting, when just one of the tilting rails (102, 102') is moved.
7. Slatted blind according to one of Claims 1 to 6, characterized in that the first and second lifting mechanisms (28, 30) have a respective endless chain (56) and a respective scissor-action chain (76), the endless chain (56) running over a lower and an upper chain wheel (58, 60), wherein one of these chain wheels (60, 58) is connected to the associated drive motor (38, 42), in that the endless chain (56) is connected to a carriage (68), and the carriage (68) can be moved upwards and downwards along the movement path, and in that one end (74) of the scissor-action chain (76) is mounted on the carriage (68) and another end (86) of the scissor-action chain (76) is mounted at a fixed location in the vicinity of the one chain wheel (60), wherein the slats (12) are mounted at points of articulation (84) of the scissor-action chain (76), and therefore the tilting axes (K) run through the points of articulation (84).
8. Slatted blind according to Claims 6 and 7, characterized in that the relevant carriage (68), preferably by means of a changeover lever (106), in a lower end region (104) of the movement path (B), displaces the associated tilting rail (102), preferably along a guide track (108), parallel to itself in order to tilt, or to twist, the slats (12) from an open position into a closed position.
9. Slatted blind according to Claim 7 or 8, characterized in that a drive (62) is fastened on the endless chain (56), and this drive (62) is guided in an aperture (66) of the carriage (68), which can be moved upwards and downwards along the movement path (B), wherein the aperture (66) in the carriage (68) is designed such that the carriage (68), or the drive (62), is blocked when the slatted-blind body (14) is fully extended.
10. Slatted blind according to Claims 8 to 9, characterized in that, when the first and second lifting mechanisms (28, 30) are lowered synchronously, in the lower end region (104) of the movement path (B), all the slats (12) of the slatted-blind body (14) are tilted from an open position into a closed position and, when one of the lifting mechanisms (28, 30) is then raised on one side, in the end region (104), the slats (12) are twisted.

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