DK200500025U3 - System comprising slats with scissors - Google Patents

Description

DK 2005 00025 U3

Fig.3 DK 2005 00025 U3

The present invention relates to a system comprising slats, for example for use in a shutter, field / panel or blinds which can be used, for example, in connection with window sections in buildings, the system comprising a number of substantially parallel slats and mechanisms for displacing them. slats over an inner open area of the system as well as tilting the slats.

Vertical blinds are provided with slats which can be displaced across the system. using a scissor mechanism. Furthermore, the slats in these systems can be tilted by means of a tilting mechanism comprising arrangements of a spindle extending across all the slats in engagement food gear mounted on the rotary shafts of the individual slats. Examples of such systems are described in US 3,280,891 and US 5,819,833.

It is an object of the present invention to provide a system of slats, for example, a shutter or venetian blind system of the aforementioned kind comprising a frame or side pieces that encircle or delimit an inner area which can be covered more or less by a number parallel to each other extending lamellae, wherein the lamellae can be displaced between a first outer position in which they spread over substantially all of the above inner region and a second outer position, where the lamellae cover only a given portion of that region. Furthermore, the slats must be able to be made to occupy the intermediate positions between the aforementioned outer positions. Furthermore, the system according to the invention should be oriented according to a particularly preferred embodiment thereof so that the slats extend both vertically over each other, ie. with the slats extending horizontally, such as in conventional blinds, which are side by side, ie. with the slats extending vertically. Also, every conceivable intermediate orientation of the shutter must be possible, without prejudice to the proper functioning of the system. Likewise, the plane of the system must be able to extend at any angle to the horizontal, for example vertical as in a regular window or inclined as in connection with a sloping window.

It is a further object of the invention to provide a mechanism for displacing the slats over the above inner region of the system so that during the entire displacement, i.e. in any position of the slats relative to the frame or side pieces, a well-defined distance between the individual slats is provided / maintained.

2 DK 2005 00025 U3

It is a further object of the invention to provide a tilting mechanism for tilting the slats in relation to the plane of the shutter. The tilting system must operate without regard to the extent of the slats over the inner open area of the frame, ie. regardless of where the individual slats are located within this area.

The above object is met by a system which comprises either at least a partially hollow frame consisting of two side parts and a top and bottom part, the side parts being provided with grooves through the inside of the side parts through which the shafts of the slats are guided, or which mentioned instead of the completely encircling frame merely comprises the two side portions. These rotary shafts are located within the side pieces in engagement with a scissors mechanism, known per se from a variety of uses, also in other art fields (for example, a sugar cane), which will be described in detail below in the detailed part of the specification. The scissor mechanism thus comprises in a known manner a series of cross sections where the intersections of these sections, irrespective of the overall extent of the scissors mechanism, in the ideal case where there are no blurs in the bearings of the mechanism are all equally spaced from each other. Thus, if the rotary shafts of the individual slats are connected to the intersections of the scissor mechanism, the distance between the rotational shafts of the individual slats will also always be at an equal distance from each other, regardless of the overall extent of the scissor mechanism. The scissor mechanism is dimensioned in the present case so that, in its extended state, it allows the slats to cover the entire inner open area of the shutter and in the opposite, collapsed condition, the slats contract so much as to cover the desired minimum portion of the shutter. inner area.

Finally, the rotary shafts of the individual slats are rotatably passed through the intersections of the scissor mechanism so that the slats can be rotated about their longitudinal axis regardless of the degree of extension of the scissor mechanism.

The tilting mechanism of the slats may be embodied in a variety of ways, a single, currently preferred embodiment being described in the detailed description.

In the following, a more detailed representation of the present invention will be provided, exemplified by a shutter comprising the scissor and tilt mechanism 3 of the present invention, reference being made to the accompanying drawings, in which Figure 1 shows a schematic representation. of a shutter according to the manufacture in a state in which the slats distribute evenly over the open area within the frame; Figure 2 shows the same shutter as shown in Figure 1 but with the slats contracted so that they cover only a portion of the open area within the frame; Figure 3 shows a schematic perspective view of a section of a side part of the frame, scissor mechanism and adjacent slats in the shutter according to the invention; Figure 3a shows a preferred embodiment of the arm of the rocker mechanism; FIG. 3b shows a special configuration of the ends of the intersections of the scissor mechanism;

Figures 4a, b, c and d show alternative displacement mechanisms for displacing the slats over the inner region of the shutter.

With reference to Figure 1, there is thus shown an embodiment of a shutter according to the present invention generally indicated by 1 and comprising at least a partially hollow frame 2 consisting of opposite side parts 2 'and top and bottom parts 2 "and 2'". In the inwardly facing sides of the side parts 2 'there are grooves 14 extending longitudinally of the side parts to such an extent that the slats 3 can be displaced sufficiently in these grooves to cover the inner region of the frame or a desired part thereof. Through the grooves 14, the shafts 4 of the individual slats 3 are passed.

Figure 2 shows the same shutter as in Figure 1 but with the slats offset to cover substantially the upper third of the inner region of the frame.

Referring to Figure 3, both the scissor mechanism mentioned above and the rocker mechanism used will be discussed in more detail. Figure 3 shows only one side part 2 'of the frame 2. The opposite side part may be formed in a similar manner, but according to a preferred embodiment, the opposite side part contains only the scissor mechanism, while the rocker mechanism is only in one side part. On 4 DK 2005 00025 1) 3 figure 3, the track 14 is seen through which the individual shafts 4's rotary shafts 4 are passed. Inside the hollow part of the side part 2 'is the said scissor mechanism indicated by 5 which, as shown, consists of a series of cross sections 5' through which the central intersecting part 4 of the shafts 4 of the slats 3 is passed so that they can rotate freely. at the intersection. At the end of the rotary shafts is provided an arm 8 which is provided at the end of the arm furthest from the rotational shaft with a first pin or roller 9. As the arm 8 is tilted as indicated by the arrows B, the corresponding slat thus tilts. In the embodiment shown in Figure 3, said first tab or roller 9 is engaged with a groove 10 of approximately the same width as the diameter of the pin or roller 9. The groove 10 is in a longitudinal rod 11 extending longitudinally of the side part 2 '. can be displaced both longitudinally of the side portion 2 'and transversely thereof. The transverse displacement is indicated by arrows A in Figure 3. In order to effect the simultaneous longitudinal and transverse displacement, the rod 11 on the surface thereof opposite the groove 10 is provided with another pin or the like 13 which can be displaced in an inclined groove 12 on the outside of the side portion 2 '. However, the inclined groove does not necessarily have to be visible from the outside of the side part or to be cut into it. It may also be provided in a separate element which is slidably attached to the inside of the frame so that it is not visible from the outside. Thus, displacement of the second pin 13 in the groove 12 causes the simultaneous displacement of the rod 11 longitudinally and transversely of the side part 2 ', thereby causing, via the engagement between the first pin or roller 9 on the rocker arm 8 and the groove 10 in the rod 11 tilting of the slats. As the rod 11 and groove 10 extend longitudinally across the entire system of slats, the tilting function will function regardless of where the individual slats are within the frame. The groove 12 can, in principle, form any desired angle (a) greater than 0 degrees and less than 90 degrees with respect to the longitudinal axis through the side piece 2 ', although it has been found that angles of the order of 30 degrees give satisfactory results.

In order to allow the arms 8, and thus the slats even in the most contracted position of the scissor mechanism, to be rotated over the widest possible angle range, and to allow the arms to be made as long as the inner space of the side pieces allows, it is advantageous to design the arms as shown in Figure 3a.

Furthermore, it is advantageous if the ends 28 of the individual scissors in the scissor mechanism as shown in Figure 3b are tapered and / or that the diameter of the corresponding bearings 29 is made as small as possible. Other optimizations of the actual performance of both the scissor mechanism and the rocker arms may be envisaged, and these are considered to fall within the scope of protection of the present invention as defined by the subsequent utility model requirements.

As mentioned initially, the scissor mechanism 5 will, in principle, cause the distance between the points where the rotary axes 4 of the slats pass through the intersections will remain the same for all the extent of the scissor mechanism. Thus, for example, when the scissor mechanism is contracted from its maximum extended position, where the slats cover the entire interior area of the frame, to a more contractional position, there will in principle always be an equal distance between neighboring slats, regardless of where in the slat system they are located. . The slats thus remain evenly distributed over the portion of the inner region of the frame covered by slats.

With reference to Figures 4a, b, c and d, various ways of operating the scissor mechanism according to the invention will now be discussed. However, it should be emphasized that these alternative ways are intended as examples and that one skilled in the art is likely to devise additional ways to operate the mechanism without this being perceived as falling outside the scope of the present invention as defined by the subsequent utility model requirements. . Furthermore, which of the aforementioned propellants will be preferred will also depend on the specific application of the shutter, including its orientation (horizontal / vertical slats, vertical shutter, horizontally positioned shutter, shutter positioned with inclined plane, which such as a sloping window, etc.), because the gravity of the slats at certain orientations of the shutter will affect the displacement of the slats, and thus the function of the scissor mechanism, while other orientations of the shutter will reduce or completely eliminate the influence of gravity on the displacement of the slats.

In Figures 4a, b, c and d, reference number 15 generally indicates a fixed connection to the relevant part of the frame. Thus, as is apparent from one end junction 15a of the scissor mechanism 5, in all of the embodiments shown, it is firmly connected to the frame via fasteners which allow the corresponding slat to tilt over the desired area.

Figure 4a shows a first embodiment of propellants for the scissor mechanism. Here, the scissor mechanism is suspended from 15 (the direction UPAD is shown in the figure) and two winding lines 16 are attached to the lower intersection at 17. The wiring lines 16 may possibly have been passed through suitable guide 18 at the other intersections. The winding ropes 16 will be connected to suitable propellants (not shown in the figure) located in the top portion 2 ”of the frame, for example comprising a motor which drives a drum for up / unwinding the winding ropes through an appropriate exchange. When the drive mechanism is actuated, the pull-up cords 16 will contract the scissor mechanism in an upward direction, and conversely, the gravity of the slats will be utilized for the downward movement of the system.

Figure 4b shows an alternative way of operating the scissor mechanism, since this system is still thought to be used suspended from a fixed point 15 and thus to its downward movement due to gravity. In this case, the two winding ropes shown in Figure 4a are replaced by a single winding rope 19, one end of which is attached to the top portion 2 ”of the frame and which is passed via a suitable guide 20 around a pulley 21 mounted on the lower junction, from which the rope rope 19 via said guide 20 is provided a driving mechanism which e.g. may be designed in a manner similar to that of Figure 4a. Without this being shown, it should be mentioned that, by the appropriate use of pulleys at both ends of the winding cords, this system could be extended to a waist system that would facilitate the winding of the system.

While the two aforementioned systems specifically applied to vertically mounted (or at least relatively strongly inclined) systems of substantially horizontally extending slats (i.e., blinds-like systems for vertical windows or sloping windows of suitably large inclination), the following may be referred to embodiments of propellants for the scissor mechanism are in principle used without regard to the orientation of the frame or shaft, respectively. the slats, as they do not depend on the effect of gravity.

Thus, Figure 4c describes the scissor mechanism 5 fixedly connected at 15 and driven by pull cords 22 and 23 which, like the system shown in Figure 4b, may be passed through guide 20. The draw cord 22 is connected at 17 to the junction which is furthest from the fixed connecting point 15. The pull cord 23 is guided via the optional guide 20 around a pulley 24 which is connected to the frame side at 15 'opposite the fixed connection point 15 and from here to the point 17. A pull in the pull cord 22 will thus cause the scissor mechanism 5 to retract. together, while a pull in the pull cord 23 will cause the scissor mechanism to be pulled out. This function is, of course, in principle independent of the influence of gravity and acts without regard to the specific orientation of the frame and slats therein.

7 DK 2005 00025 U3

It should be noted that the term "leash" as used herein is intended to mean any flexible traction means capable of performing a leash function, for example, chains, for example, fall within this meaning, and in the case of large shutters with heavy blades, it may be appropriate in fact to use chains or wires instead of cords.

An alternative mechanism for operating the scissor mechanism, which will also operate without regard to the orientation of the shutters and slats, is shown in Figure 4d. In this embodiment of the scissor mechanism according to the invention, the pull cords in the previous embodiments are replaced by a threaded spindle 25, which may have been passed through guide 20 at the individual junctions and which at the junction located furthest from the fixed connection point 15 of the scissor mechanism is passed through a threaded member 26 attached to the end of the scissor mechanism which is furthest away from the attachment point 15. The spindle 25 may optionally be supported by a bearing 27 attached to the frame. As the spindle 25 rotates in one direction, the scissor mechanism will be stretched out and in the opposite direction it will be pulled apart.

Finally, it should be noted that although the shear means, viz. (up) the drawstrings 16, 19, 22 and 23 and the spindle 25, although previously described as acting on the intersections farthest away from the first intersection 5 'of the scissors, these shear means may in principle be connected to any of the preferably the intersections of the scissor mechanism, and yet cause the displacements of the scissor mechanism described above, and thus of the slats. The displacement means also do not have to act at the outermost points of the junction (as in Figure 4a) or at the central, intersecting points (as in Figures 4b, 4c and 4d) but can in principle act at any point on the junction.

Furthermore, although the foregoing is illustrated in detail in the form of a shutter comprising a frame extending on all sides of the inner open area, the production also includes systems comprising only the two side pieces (2 ') in which the scissors and rocker mechanisms are located. In this case, these side pieces will each be attached to the building, sloping window or the like.

8 DK 2005 00025 U3

Use model requirements 1. A system comprising a partially hollow frame (2) with side parts (2 '), a top part (2') and a bottom part (2 '') encircling an inner region in which there are a plurality of slats (3) extending in substantially parallel to each other, or comprising two opposite side portions (2 ') defining the above inner region, the inwardly facing walls of the side portions (2') being provided with through grooves (14) through which shafts (4) of the slats (3) a process wherein the system is further provided with a displacement mechanism for the slats comprising a scissor mechanism (5) consisting of cross sections in which the junction shafts (4) of the slats (3) are pivotally passed to a distal end so that a contraction / extension of the scissor mechanism (5) causes the slats (3) to cover a greater or lesser portion of the above inner region of the system.

System according to claim 1, characterized in that said scissor mechanism (5) is attached to the frame (2) at the first junction (5 ') of the scissor mechanism (5) and further provided with shear means (16, 19, 22, 23, 25) which are either attached to or engaged with one of the intersections of the scissor mechanism (5) so that an activation of the shear means causes a contraction or an extension of the scissor mechanism (5).

System according to claim 2, characterized in that the aforementioned shear means (16, 19, 22, 23, 25) are attached to or engaged with the intersection furthest away from said first intersection (5 ').

System according to claim 2, characterized in that the aforementioned shear means comprise at least one winding cord, winding wire, winding chain or similar flexible means (16), one end of which is fixed to end points (17) of the scissor mechanism (5) located at a given junction of the scissor mechanism (5), and wherein the other end of the aforementioned scissor cord, scissor wire, scissor chain or similar flexible means (16) is connected to propellants in the frame which, when activated thereby, cause / enable an extension / contraction of the scissor mechanism, whereby the slats (3) are displaced across the inner region of the frame.

System according to claim 2, characterized in that the aforementioned shear means comprise a pull-up cord, pull-up wire, pull-up chain or similar flexible means (19), one end of which is fixed to the frame (2 ') and then passed around a pulley or similar (21) located at a given junction of the scissor mechanism, and from this pulley (21) to propellants in the frame which, when activated thereby, cause / enable an extension / contraction of the scissor mechanism, thereby displacing the slats (3) over the inner area of the frame.

System according to claim 2, characterized in that the aforementioned shear means comprise two pull-up cords, pull-up wires, pull-up chains or similar flexible means (22, 23), one of which shear means (22) is fixed at one end to a given junction and the other end thereof is connected to propellants in the frame and the second shear means (23) from the above junction is passed over a pulley (24) connected to the frame (2 "') opposite to the place where the scissor mechanism (5) is attached to the frame (2') and wherein the second displacement means (23) from the pulley (24) is directed to propellants in the frame, such that when the propellants are actuated this causes an extension / contraction of the scissor mechanism, whereby the slats (3) are displaced across the inner region of the frame.

System according to claim 2, characterized in that the aforementioned shear means comprise a threaded shaft (spindle) (25) extending substantially longitudinally of the scissor mechanism (5) and operatively engaged by a threaded element (26) connected to one of the the intersections of the scissor mechanism (5), whereby the threaded shaft (25) is further connected to propellants for rotation thereof, such that a rotation thereof causes an extension / contraction of the scissors mechanism, whereby the slats (3) are displaced over the inner region. of the frame.

System according to claim 1, characterized in that it further comprises a tilting mechanism for tilting the slats (3) consisting of an arm (8) connected to the aforementioned distal end of the shaft (4) of the individual slats (3), wherein the arm ( 8) at a distance from the shaft (4) is provided with a first pin or roller (9) for engaging a first groove (10) provided in a longitudinally and transversely longitudinally displaceable rod (2 ') 11), wherein the rod (11) is further provided with a second pin (13) in engagement with another groove (12) in or associated with the side part (2 *), said second groove (13) extending at an inclined angle (a) relative to the longitudinal axis of the side portion (2 *) such that a displacement of the second pin (13) in the second groove (12) causes a combined longitudinal and transverse movement of the rod (11) which, in turn, via the engagement between the first pin or roller (9) and the 10 10DK 2005 00025 U3 first groove (10) causes it to the rotating shaft concerned (4), and thus the corresponding slat (3) rotates.

System according to Claim 8, characterized in that the above inclined angle (a) lies in the interval between 20 and 40 degrees.

A tilting mechanism for tilting slats (3), for example, in a shutter or blind, wherein the tilting mechanism comprises an arm (8) connected to the aforementioned distal end of the shaft (4) of the individual slats (3), wherein the arm (8) a distance from the pivot shaft (4) is provided with a first pin or roller (9) for engaging a first groove (10) provided in a longitudinally and transversely longitudinally displaceable rod (11), wherein the rod (11) is further provided with a second pin (13) in engagement with a second groove (12) in or associated with the side part (Z), said second groove (13) extending at an inclined angle (a) with respect to the longitudinal axis of the side portion (Z) such that a displacement of the second pin (13) in the second groove (12) causes a combined longitudinal and transverse movement of the rod (11) which in turn, via the engagement between the first pin or roller (9) and the first groove (10) causes the said shaft (4) to rotate, and d with the corresponding slat (3) turning.

Tilting mechanism according to claim 10, characterized in that the above inclined angle (a) is in the range between 20 and 40 degrees.

DK 2005 00025 U3

DK 2005 00025 U3

Fig.3 DK 2005 00025 U3 DK 2005 00025 U3 9

FIG. 3a

FIG. 3b DK 2005 00025 U3

A Q I FIG. 4a DK 2005 00025 U3

FIG. 4b DK 2005 00025 U3

FIG. 4c DK 2005 00025 U3

FIG. 4d