EP2586956A1

EP2586956A1 - Venetian blind system

Info

Publication number: EP2586956A1
Application number: EP12189874.6A
Authority: EP
Inventors: John Urbain Houfflyn; Lieven André Eric Depraetere; Alain Henri Waelkens
Original assignee: Renson Sunprotection Projects NV
Current assignee: Renson Sunprotection Projects NV
Priority date: 2011-10-28
Filing date: 2012-10-25
Publication date: 2013-05-01
Anticipated expiration: 2032-10-25
Also published as: BE1020351A3; EP2586956B1

Abstract

The present invention relates to a Venetian blind system (1), comprising slats (2a-g), which are rotatable with respect to their rotation axle (3a-g), a displacement mechanism (15) for displacing the rotation axles (3a-g) between an open position and a closed position, and a tilting mechanism (4a-g, 5a-g, 7, 8, 9, 10, 11, 12, 13) comprising a first guide profile (7) and a second guide profile (8) laterally with respect to the slats (2a-g), each of which is displaceable substantially at right angles to the plane of the rotation axles (3a-g) and comprising a first handle (4a-g) and a second handle (5a-g) for each slat (2a-g), one side of which is attached at an angle with respect to each other to an end of the rotation axle (3a-g) and the other side of which is arranged in the first guide profile (7) and the second guide profile (8), respectively, in a guided manner, so that the slats (2a-g) rotate between an open position and a closed position upon displacement of the guide profiles (7, 8).

Description

The present invention relates to a Venetian blind system for at least partially covering an opening, comprising several slats which are arranged substantially parallel to each other and which each comprise a rotation axle by means of which they are arranged in the opening so as to be rotatable with respect to their rotation axle, in which these rotation axles are arranged substantially in a plane, in which the Venetian blind system comprises a displacement mechanism for displacing of these rotation axles between an open position, in which all rotation axles are arranged substantially on one side of the opening and a closed position, in which the rotation axles are distributed substantially evenly across the opening and in which the Venetian blind system comprises a tilting mechanism for rotating the slats in a synchronous manner, comprising a first guide profile which extends laterally with respect to the slats and which is displaceable in a plane substantially at right angles to the plane of the rotation axles and comprising a first handle for each slat, one side of which is attached to an end of the rotation axle and the other side of which is disposed in the first guide profile in a guided manner, so that the slats rotate between an open position, in which they extend substantially at right angles to the plane of their rotation axles, and a closed position, in which they extend substantially along the plane of their rotation axles when the first guide profile is displaced.
When, in such Venetian blind systems, the rotation axles are in the open position and the slats are in the open position, said opening is substantially open and when the rotation axles are in the closed position and the slats are in the closed position, said opening is substantially closed.
Such Venetian blind systems are usually (but not exclusively) used as sunblinds or as an obscuration device.
With most such Venetian blind systems, the displacement of the rotation axles to the open position is coupled to the tilting of the slats to their open position and, conversely, the displacement of the rotation axles to the closed position is coupled to the tilting of the slats to their closed position, as is the case, for example, with the Venetian blind system from FR 1 284 011 A .
This has the significant drawback that in each intermediate position, a zone of the opening remains uncovered in each case. In order to cover this zone, for example, against undesired sunlight, the sunblind has to be closed further, thereby causing unnecessary/undesirable obscuration.
The present invention therefore also relates to such Venetian blind systems in which the tilting of the slats is not coupled to the displacement of the rotation axles of these slats, as is the case, for example, with the Venetian blind system from WO 2006/077543 Al . By not coupling the tilting movement of the slats to the displacement movement of the rotation axles, it is possible, for example, in the closed position of the rotation axles, to tilt the slats at least partially open or, in a position of the rotation axles between the open position and the closed position thereof, to continuously adjust the slats in positions between their open position and their closed position. In this way, it is possible to cover the opening in a more targeted manner without the abovementioned undesirable effects.
However, uncoupling the tilting of the slats from the displacement of the rotation axles may result in problems with such Venetian blind systems fitted with said tilting mechanism when tilting the slats if the rotation axles are situated in a position between their open position and their closed position. During tilting, the first handle may at a certain point in time be at substantially right angles to the guide profile, after which it is not certain that the slats will be tilted further in the correct direction. In this case, the first handle reaches a so-called dead point. The direction of the handle is considered to be the direction of the connecting line between the location where the handle is attached to the rotation axle and the location where the handle is guided in the guide profile, projected in a plane at right angles to the rotation axles and at right angles to the plane of the rotation axles.
The handle and the guide profile can now be arranged in such a manner and the movement of the guide profile can now be controlled in such a manner that the tilting movement of the slats takes place in a zone in which the handle does not reach its so-called dead point. Thus, the handle of the Venetian blind system from WO 2006/077543 Al can describe a circle of rotation between +90° (horizontal) and -90° (opposite horizontal), in which these two extremes of the circle of rotation are the dead points. However, arranging the handle and the guide profile in this way does result in a considerable number of limitations with regard to the design and position of the handle and the guide profile and with regard to the control of the guide profile. A part of the tilting mechanism of the Venetian blind system from WO 2006/077543 Al always ends up in front of the rotation axles of the slats, as a result of which it is difficult, for example, to achieve a finished product in which the front side of the slats and the front side of the framed structure are in the same plane.
It is now an object of the present invention to provide a Venetian blind system comprising an alternative solution to said problem.
This object of the invention is achieved by providing a Venetian blind system for at least partially covering an opening, comprising several slats which are arranged substantially parallel to each other and which each comprise a rotation axle by means of which they are arranged in the opening so as to be rotatable with respect to their rotation axle, in which these rotation axles are arranged substantially in a plane, in which the Venetian blind system comprises a displacement mechanism for displacing of these rotation axles between an open position, in which all rotation axles are arranged substantially on one side of the opening and a closed position, in which the rotation axles are distributed substantially evenly across the opening and in which the Venetian blind system comprises a tilting mechanism for rotating the slats in a synchronous manner, comprising a first guide profile which extends laterally with respect to the slats and which is displaceable in a plane substantially at right angles to the plane of the rotation axles and comprising a first handle for each slat, one side of which is attached to an end of the rotation axle and the other side of which is disposed in the first guide profile in a guided manner, so that the slats rotate between an open position, in which they extend substantially at right angles to the plane of their rotation axles, and a closed position, in which they extend substantially along the plane of their rotation axles, when the first guide profile is displaced, comprising a second guide profile which extends laterally with respect to the slats and which is displaceably arranged in a plane substantially at right angles to the plane of the rotation axles, and comprising a second handle for each slat, which is arranged at an angle with respect to the first handle, one side of which is attached to an end of the rotation axle and the other side of which is disposed in the second guide profile in a guided manner.
As indicated, direction of the handle is considered to be the direction of the connecting line between the location where the handle is attached to the rotation axle and the location where the handle is guided in the corresponding guide profile, projected on a plane at right angles to the rotation axles and at right angles to the plane of the rotation axles. The angle between the first and the second handle is therefore also the angle between their corresponding projections in the same plane at right angles to the rotation axles and at right angles to the plane of the rotation axles.
By providing two handles and corresponding guide profiles and due to said angle between both handles, the movement of the handles by means of the guide profiles takes place with a phase shift with respect to each other, so that the dead angle on the one handle and the one guide profile is compensated for by the other handle and the other guide profile. Both ensure that the slats are always tilted in the desired direction.
With each slat, the first handle and the second handle are preferably fitted on the same end of the rotation axle.
If both handles are provided at another end of the rotation axle, then both guide profiles are also arranged on another lateral side of the slats and this makes it necessary when driving the movement of both guide profiles, each at another end of the slats, to synchronize their movement by means of transmission means and/or by means of synchronized motors. By providing both handles on one side of the slats, it is possible to greatly simplify the drive mechanism for moving both guide profiles.
In order to produce a Venetian blind system according to the invention which is particularly aesthetic, the first guide profile and the second guide profile are furthermore preferably arranged on the same side of the plane of the rotation axles.
Each guide profile of a specific embodiment of a Venetian blind system according to the invention comprises a slot which extends substantially along the length of the guide profile, having an access opening which is situated on a side of the guide profile which extends substantially at right angles to the plane of the rotation axles, and each handle of such a Venetian blind system comprises a guide element which is arranged in the slot of the corresponding guide profile in a guided manner.
With such a Venetian blind system according to the invention in which the first and the second handle of each slat are arranged at the same end of the rotation axle and in which, in addition, the first guide profile and the second guide profile are arranged on the same side of the plane of the rotation axles, said access openings of the first guide profile and the second guide profile preferably face each other. In this way, a compact positioning of the handles and the guide profiles is made possible without having to make sacrifices regarding the tilting angle of the slats.
In order to limit the friction when guiding the handles in the corresponding guide profile, each guide element preferably comprises a guide wheel which is arranged in the corresponding slot so that it can roll.
The displacement mechanism of a particular embodiment of a Venetian blind system according to the present invention comprises a linkage guide which comprises linkage arms which are connected to one another in pairs in a crosswise and hinged manner by means of a centre hinge pin to form cross pieces, the various cross pieces being hingedly connected to one another at the ends of the linkage arms by means of outer hinge pins.
Due to their connection to the centre hinge pins and outer hinge pins, the linkage arms of such a linkage guide can be moved in a concertina-like manner with respect to each other. Such a linkage guide is also referred to as a pantograph structure. Characteristic of the movement of the rotation axles by means of such a pantograph structure is the fact that the rotation axles remain at the same intermediate distance from one another in any position of said rotation axles.
In a particularly aesthetic embodiment of a Venetian blind system according to the present invention, the rotation axles of the slats are connected to or configured as outer hinge pins of the linkage guide.
In such a Venetian blind system, in which, in addition, the first and the second handle of each slat is arranged on the same end of the rotation axle, in which the first guide profile and the second guide profile are arranged on the same side of the plane of the rotation axles, and in which said access openings of the first guide profile and the second guide profile face each other, the first guide profile and the second guide profile are preferably arranged on the same side of the plane of the rotation axles as that on which the linkage arms are mainly arranged.
In this case, the linkage guide is furthermore preferably arranged between the slats and the said guide profiles.
In order to keep the slat axles as accurately as possible in their plane, a Venetian blind system according to the present invention furthermore preferably comprises a slat guide profile which is arranged laterally with respect to the slats for guiding the movement of the rotation axles of the slats upon displacement thereof. With such a Venetian blind system with a linkage guide, said linkage guide is furthermore preferably arranged between the slats and said slat guide profile. In this way, a good horizontal stability of the slats can be achieved more easily than if a lock of the slats is situated between the slats and the linkage guide. Such a horizontal stability is important in connection with wind loads.
Furthermore, a Venetian blind system according to the invention preferably comprises drive means for driving the movement of the guide profiles in a synchronous manner upon displacement thereof.
These drive means preferably comprise a motor with a motor shaft, a first drive handle for converting the movement of the motor shaft to a movement of the first guide profile, and a second drive handle which is arranged at an angle with respect to the first drive handle for converting the movement of the motor shaft to a movement of the second guide profile.
With such a Venetian blind system, in which, in addition, the first and the second handle of each slat are arranged on the same end of the rotation axle, in which the first guide profile and the second guide profile are arranged on the same side of the plane of the rotation axles, and in which said access openings of the first guide profile and the second guide profile face each other, the first drive handle and the second drive handle are preferably arranged one behind the other between the first guide profile and the second guide profile.
The present invention will now be explained in more detail by means of the following detailed description of some preferred embodiments of Venetian blind systems according to the present invention. This description is solely intended to give illustrative examples and to indicate further advantages and features of these Venetian blind systems, and can therefore not be interpreted as a limitation of the area of application of the invention or of the patent rights defined in the claims.
In this detailed description, reference numerals are used to refer to the attached drawings, in which:

Fig. 1 shows an embodiment of a Venetian blind system according to the present invention in side view, with the rotation axles in their closed position and with the slats in their closed position, in which the front side of this Venetian blind system is turned to the left;
Fig. 2 shows a detail of the upper side of the Venetian blind system from Fig. 1 in side view, with the rotation axles in their closed position and with the slats in their closed position, in which the front side of this Venetian blind system is turned to the right;
Fig. 3 shows a detail of the upper side of the Venetian blind system from Fig. 1 in perspective, with the rotation axles in their closed position and with the slats in their closed position, in which the front side of this Venetian blind system is turned to the right;
Fig. 4 shows the Venetian blind system from Fig. 1 in side view, with the rotation axles in their open position and with the slats in their open position, in which the front side of this Venetian blind system is turned to the left;
Fig. 5 shows the Venetian blind system from Fig. 1 in side view, with the rotation axles in a position between their open position and their closed position and with the slats in their open position, in which the front side of this Venetian blind system is turned to the left;
Fig. 6 shows the Venetian blind system from Fig. 1 in side view, with the rotation axles in a position between their open position and their closed position and with the slats in a position between their open position and their closed position, in which the front side of this Venetian blind system is turned to the left;
Fig. 7 shows the Venetian blind system from Fig. 1 in side view, with the rotation axles in their closed position and with the slats in their open position, in which the front side of this Venetian blind system is turned to the left;
Fig. 8 shows a detail of the upper side of the Venetian blind system from Fig. 1 in side view, with the rotation axles in their closed position and with the slats in their open position, in which the front side of this Venetian blind system is turned to the right;
Fig. 9 shows a detail of the upper side of the Venetian blind system from Fig. 1 in perspective, with the rotation axles in their closed position and with the slats in their open position, in which the front side of this Venetian blind system is turned to the right;
Fig. 10 shows a detail of the upper side of the Venetian blind system from Fig. 1 in perspective, with the rotation axles in their closed position and with the slats in a position between their open position and their closed position, in which the front side of this Venetian blind system is turned to the right;
Fig. 11 shows a detail of the upper side of the Venetian blind system from Fig. 1 in side view, with the rotation axles in their closed position and with the slats in a position between their open position and their closed position, in which the front side of this Venetian blind system is turned to the right;
Fig. 12 shows a detail of the upper side of the Venetian blind system from Fig. 1 in perspective, with the rotation axles in their closed position and with the slats in a position between their open position and their closed position, in which the front side of this Venetian blind system is turned to the right;
Fig. 13 shows a detail of the upper side of the Venetian blind system from Fig. 1 in side view, with the rotation axles in their closed position and with the slats in a position between their open position and their closed position, in which the front side of this Venetian blind system is turned to the right;
Fig. 14 shows a detail of the left-hand side of the Venetian blind system from Fig. 1 in top view.

The illustrated embodiment of a Venetian blind system (1) according to the present invention comprises slats (2a-g) which are arranged substantially horizontally and parallel to each other. The slats (2a-g) each comprise a rotation axle (3a-g) which is fixedly connected to the body of the slats (2a-g) and which are rotatably arranged in the Venetian blind system (1).
The rotation axles (3a-g) of the slats (2a-g) of this Venetian blind system (1) extend in a vertical plane. It is obvious that the features of the invention can also be used to produce Venetian blind systems (1), in which the slats (2a-g) extend, for example, substantially vertically or in which the rotation axles (3a-g) are arranged in a horizontal plane or in a plane which is arranged at an incline.
In the vertical plane, the rotation axles (3a-g) can be pulled up between an open position, as illustrated in Fig. 4, and a closed position, as illustrated in Figs. 1-3 and 7-13. To this end, the Venetian blind system (1) is provided with a linkage guide (15) on one side. The linkage arms of this linkage guide (15) are connected to one another in pairs in a crosswise and hinged manner by means of a centre hinge pin to form cross pieces. The various cross pieces are hingedly connected to each other at the ends of the linkage arms by means of outer hinge pins. The Venetian blind system (1) is preferably provided with such a linkage guide (15) on each side. On the other side, the Venetian blind system (1) comprises pulling-up means for this purpose. These pulling-up means may comprise, for example, a motor with pulling cable to be able to pull up the linkage guide and to lower it. Alternatively, these pulling-up means may comprise, for example, a motor and a spindle to which the underside of the linkage guide is attached in a guided manner and is raised or lowered by rotating the spindle. Of course, still other pulling-up means using, for example, chains, belts, gear wheel systems, etc. are conceivable.
The rotation axles (3a-g) of the slats (2a-g) in each case serve as outer hinge pins on the front side of said linkage guide (15). In this way, the slats (2a-g) are attached to the front side of the Venetian blind system (1) in an aesthetic manner. In order to limit the width of the hinge guide (15) with respect to the width of the slats (2a-g) so as to make it possible to give the Venetian blind system (1) an aesthetic finish, another additional outer hinge pin is provided between in each case two successive rotation axles (3a-g) of the slats (2a-g) on the front side of the linkage guide (15), so that two cross pieces of the linkage guide (15) are situated between two slats (2a-g). In order to prevent the slats (2a-g) from pulling out of alignment, the ends of the rotation axles (3a-g) on each side are arranged in a slot of a respective slat guide profile (6) in a guided manner.
In substantially every position of the rotation axles (3a-g), the slats (2a-g) can furthermore be tilted in a synchronous manner by means of a tilting mechanism (4a-g, 5a-g, 7, 8, 9, 10, 11, 12, 13) between an open position (in which the tilt angle is 90°), in which the slats (2a-g) extend substantially at right angles to the plane of the rotation axles (3a-g) (see Figs. 4-5 and 7-9) and a closed position, in which the slats (2a-g) extend substantially along the plane of their rotation axles (3a-g) (see Figs. 1-3). The tilting mechanism (4a-g, 5a-g, 7, 8, 9, 10, 11, 12, 13) is provided on one side of the Venetian blind system (1) for the sake of simplicity of the drive mechanism and is situated as much as possible on the rear side of the Venetian blind system (1) for aesthetic reasons.
On the left-hand side of the Venetian blind system (1), as is illustrated in Fig. 14, a first handle (4a-g) and a second handle (5a-g) are attached on the end of the rotation axles (3a-g) as part of said tilting mechanism (4a-g, 5a-g, 7, 8, 9, 10, 11, 12, 13). These handles (4a-g, 5a-g) are attached to said rotation axles (3a-g) by their one end and are provided on their other end with a guide wheel (16, 17) which is arranged in a slot in a corresponding first guide profile (7) or second guide profile (8), respectively, so that it can roll. This first guide profile (7) and this second guide profile (8) are arranged on a lateral side of the slats (2a-g) and displaceable in a plane substantially at right angles to the plane of the rotation axles (3a-g).
In order to displace the guide profiles (7, 8),the tilting mechanism (4a-g, 5a-g, 7, 8, 9, 10, 11, 12, 13) is provided with a motor, with a motor shaft (13) and a first drive handle (9) and a second drive handle (11) for converting the movement of the motor shaft (13) into a movement of the first guide profile (7) and a movement of the second guide profile (8), respectively. As a result of the fact that the handles (4a-g, 5a-g) are all provided on one side of the Venetian blind system (1), the guide profiles
(7, 8) can also be provided on this side and their movement can easily be driven in a synchronous manner using one single motor and using corresponding drive handles (9, 11). If the first handles (4a-g) and the second handles (5a-g) are each provided on a different side of the slats (2a-g), then either additional transmission means have to be provided in order to be able to drive the movement of the corresponding guide profiles (7, 8) (which also have to be arranged on another side of the slats (2a-g)) in a synchronous manner, or two synchronised motors have to be provided.
The first drive handle (9) and the second drive handle (11) are arranged at an angle with respect to each other. The first handle (4a-g) and the second handle (5a-g) of each slat (2a-g) are arranged at the same angle with respect to each other. The direction of a handle (9, 11, 4a-g, 5a-g) is considered to be the direction of the connecting line between the points on the handle (9, 11, 4a-g, 5a-g) where it is attached or guided, projected on a plane at right angles to the rotation axles (3a-g) and at right angles to the plane of the rotation axles (3a-g). The angle between respective handles (9, 11, 4a-g, 5a-g) is therefore also the angle between their corresponding projections in the same plane at right angles to the rotation axles (3a-g) and at right angles to the plane of the rotation axles (3a-g).
The guide profiles (7, 8) can be displaced in a plane at right angles to the plane of the rotation axles (3a-g) by means of the motor, the motor shaft (13) and the drive handles (9, 11). Due to the angle between the drive handles (9, 11), the movement of the second guide profile (8) takes place with a phase shift with respect to the movement of the first guide profile (7). By means of the handles (4a-g, 5a-g) on the slats (2a-g), the movement of the guide profiles (7, 8) is in turn converted into a tilting of the slats (2a-g). By providing two guide profiles (7, 8), two drive handles (9, 11) and in each case two handles (4a-g, 5a-g) for each slat (2a-g) and due to the phase shift of the movement of the guide profiles (7, 8), the dead angle of the one guide profile (7 or 8), the one drive handle (9, 11, respectively) and the one handle (4a-g, 5a-g, respectively) is in each case compensated for by the other guide profile (8, 7, respectively), the other drive handle (11, 9, respectively) and the other handle (5a-g, 4a-g, respectively).
For aesthetic reasons, the guide profiles (7, 8) of the illustrated Venetian blind system (1) are arranged on the rear side of the Venetian blind system (1), displaceable on one side of the plane of the rotation axles (3a-g).
In order to be able to stack the slats (2a-g) in a compact manner (in the open position of both the slats (2a-g) and the rotation axles (3a-g)), the handles (4a-g, 5a-g) as well as the drive handles (9, 11) are arranged between the guide profiles (7, 8), one behind the other, viewed in the direction of the rotation axles (3a-g), as can clearly be seen in Fig. 14. If both handles (4a-g, 5a-g) were to be in the same plane, the differently oriented handles (4a-g, 5a-g) would come into conflict with one another during stacking. In this case, the access openings to the slots of the guide profiles (7, 8) face each other.
The linkage guide (15) is arranged between the slats (2a-g) and the second guide profile (8). This arrangement could in principle also be reversed. However, the present arrangement has the advantage that the bending moment on the rotation axles (3a-g) is limited due to the short distance.
In the closed position of the rotation axles (3a-g) and in the closed position of the slats (2a-g), both the linkage guide (15) and the tilting mechanism (4a-g, 5a-g, 7, 8, 9, 10, 11, 12, 13) are situated behind the slats (2a-g) in the illustrated Venetian blind system (1), as is illustrated in Figs. 1-3.

Claims

Venetian blind system (1) for at least partially covering an opening, comprising several slats (2a-g) which are arranged substantially parallel to each other and which each comprise a rotation axle (3a-g) by means of which they are arranged in the opening so as to be rotatable with respect to their rotation axle (3a-g), in which these rotation axles (3a-g) are arranged substantially in a plane, in which the Venetian blind system (1) comprises a displacement mechanism (15) for displacing of these rotation axles (3a-g) between an open position, in which all rotation axles (3a-g) are arranged substantially on one side of the opening and a closed position, in which the rotation axles (3a-g) are distributed substantially evenly across the opening and in which the Venetian blind system (1) comprises a tilting mechanism (4a-g, 5a-g, 7, 8, 9, 10, 11, 12, 13) for rotating the slats (2a-g) in a synchronous manner, comprising a first guide profile (7) which extends laterally with respect to the slats (2a-g) and which is displaceable in a plane substantially at right angles to the plane of the rotation axles (3a-g) and comprising a first handle (4a-g) for each slat (2a-g), one side of which is attached to an end of the rotation axle (3a-g) and the other side of which is disposed in the first guide profile (7) in a guided manner, so that the slats (2a-g) rotate between an open position, in which they extend substantially at right angles to the plane of their rotation axles (3a-g), and a closed position, in which they extend substantially along the plane of their rotation axles (3a-g) when the first guide profile (7) is displaced, characterized in that the tilting mechanism (4a-g, 5a-g, 7, 8, 9, 10, 11, 12, 13) comprises a second guide profile (8) which extends laterally with respect to the slats (2a-g) and which is displaceable in a plane substantially at right angles to the plane of the rotation axles (3a-g) and comprising a second handle (5a-g) for each slat (2a-g) which is arranged at an angle with respect to the first handle (4a-g), one side of which is attached to an end of the rotation axle (3a-g) and the other side of which is disposed in the second guide profile (8) in a guided manner.
Venetian blind system (1) according to Claim 1, characterized in that the first handle (4a-g) and the second handle (5a-g) of each slat (2a-g) are arranged at the same end of the rotation axle (3a-g).
Venetian blind system (1) according to one of the preceding claims, characterized in that the first guide profile (7) and the second guide profile (8) are arranged on the same side of the plane of the rotation axles (3a-g).
Venetian blind system (1) according to one of the preceding claims, characterized in that each guide profile (7, 8) comprises a slot which extends substantially along the length of the guide profile (7, 8), having an access opening which is situated on a side of the guide profile (7, 8) which extends substantially at right angles to the plane of the rotation axles (3a-g) and in that each handle (4a-g, 5a-g) comprises a guide element (16, 17) which is arranged in the slot of the corresponding guide profile (7, 8) in a guided manner.
Venetian blind system (1) according to Claims 2, 3 and 4, characterized in that the said access openings of the first guide profile (7) and the second guide profile (8) face each other.
Venetian blind system (1) according to Claim 4 or 5, characterized in that each guide element (16, 17) comprises a guide wheel (16, 17) which is arranged in the corresponding slot so it can roll.
Venetian blind system (1) according to one of the preceding claims, characterized in that the displacement mechanism (15) comprises a linkage guide (15) which comprises linkage arms which are connected to one another in pairs in a crosswise and hinged manner by means of a centre hinge pin to form cross pieces, the various cross pieces being hingedly connected to one another at the ends of the linkage arms by means of outer hinge pins.
Venetian blind system (1) according to Claim 7, characterized in that the rotation axles (3a-g) of the slats (2a-g) are connected to or configured as outer hinge pins of the linkage guide (15).
Venetian blind system (1) according to Claims 8 and 5, characterized in that the first guide profile (7) and the second guide profile (8) are arranged on the same side of the plane of the rotation axles (3a-g) as that on which the linkage arms are mainly arranged.
Venetian blind system (1) according to Claim 9, characterized in that the linkage guide (15) is arranged between the slats (2a-g) and the said guide profiles (7, 8).
Venetian blind system (1) according to one of the preceding claims, characterized in that the Venetian blind system (1) comprises a slat guide profile (6) which is arranged laterally with respect to the slats (2a-g) for guiding the movement of the rotation axles (3a-g) of the slats upon displacement thereof.
Venetian blind system (1) according to Claims 7 and 11, characterized in that the linkage guide (15) is arranged between the slats (2a-g) and the said slat guide profile (6).
Venetian blind system (1) according to one of the preceding claims, characterized in that the Venetian blind system (1) comprises drive means (9, 11, 13) for driving the movement of the guide profiles (7, 8) in a synchronous manner upon displacement thereof.
Venetian blind system (1) according to Claim 13, characterized in that the drive means (9, 11, 13) comprise a motor with a motor shaft (13), comprise a first drive handle (9) for converting the movement of the motor shaft (13) to a movement of the first guide profile (7), and comprise a second drive handle (11) which is arranged at an angle with respect to the first drive handle (9) for converting the movement of the motor shaft (13) to a movement of the second guide profile (8).
Venetian blind system (1) according to Claim 14 and Claim 5, characterized in that the first drive handle (9) and the second drive handle (11) are arranged one behind the other between the first guide profile (7) and the second guide profile (8).