EP1120534B1 - Curtain device with at least two moveable bars - Google Patents

Abstract

The curtain apparatus has two movable tracks (3,4) which have at least one hanging section (5,6). Cords (8,8a,9,9a) move in opening and closing movements and a friction device (11,11a,12,12a) is guided to a fixing point (10) on the second track. Both tracks are parallel to one another.

Description

The invention relates to a curtain system with at least two movable rails which at least one curtain section is attached, the rails with operating cords are to be moved into respective opening and closing positions and the actuating cords by an actuating device arranged outside the range of movement of the rails to the (first) rail next to the actuating device and from there to the other (second) rail. Such a curtain system is known for example from DE-9312350U.

With curtain systems with more than one movable rail, the problem often arises to design the drive of the individual rails in the simplest possible way so that the Open and close the rails one after the other in the desired manner, where desired can that the sequence of movements in the opening direction is different in a certain way than the sequence of movements should be in the closing direction. It should also move the rails regardless of the direction of gravity or the orientation of the curtain system (vertical or horizontal) so that they are not different for different applications Constructions are required.

The object of the invention is therefore to provide a generic curtain system further develop that the movable rails by means of actuating cords independently move by the weight of the rails in a desired motion sequence can be, e.g. to open the first rail is moved until it is against the second rail rests and then move both rails together to an end position and, to close in the opposite direction, both rails together are moved to a middle position in which the second rail is in its end position reached, and from there the first rail is moved to its end position.

This object is achieved by a curtain system with at least two movable Disengaged rails on which at least one curtain section is attached, the Moving rails with operating cords in respective opening and closing positions are and wherein the operating cords from outside the range of movement of the Rails arranged actuator to the actuator located next to the actuator (first) rail and from there to the other (second) rail, where the curtain system according to the invention is characterized in that at least one first Actuating cord starting from the actuating device to the first rail in which first rail through (each) through a friction generating device and from there (each) one attachment point is guided on the second rail, at least one second actuating cord starting from the actuating device (at least in each case) a fixed deflection point, which is outside the range of movement of the rails on a the actuator opposite side of the curtain system is arranged, and from there after deflection by essentially 180 ° to (each) an attachment point the second rail is guided, and wherein the actuating device is designed such that the at least one first actuating cord runs counter to the at least one second Actuating cord is movable.

The movable rails can be parallel to each other or alternatively around a common one Pivot point be pivoted.

In one embodiment it can be provided that the second movable rail under Formation of a pentagonal or hexagonal curtain system shorter than the first movable one Rail is, with at least a third, endlessly guided actuating cord laterally adjacent is arranged to the first and second operating cords and starting from the Actuating device for the first movable rail, in the first rail by (each) a friction-generating device through and to (at least) one stationary Deflection point and from there after deflection by essentially 180 ° back to the Actuating device is guided, wherein the actuating device is designed such that the (respective) end sections of the at least one third actuating cord in opposite directions are movable to each other.

It is preferably provided that the actuating cords have an adjustable tension.

The friction-generating device can result from a multiple deflection of the actuating cord (cords) exist within the first movable rail. Conveniently, the friction-generating device consists of a double 90 ° deflection. Conveniently, are roles on the deflections, preferably with a predetermined or adjustable Rotational resistance (frictional torque), arranged so that a certain desired Frictional force can be adjusted.

It can be provided that the stationary deflection point (s) in one or more stationary (Limiting) rail (s) is (are) arranged on the of the actuator opposite side arranged parallel and / or obliquely to the movable rails is (are).

It is expediently provided that at the (each) deflection point at least one low-friction Deflection roller is arranged.

In one embodiment it can be provided that the actuating device essentially consists of at least one stationary pulley around which all the actuating cords are guided, with one end section of the (one) first actuating cord each with an end section of the (a) second actuating cord can be connected and possibly with End portions of the third actuating cord (cords) are connected, the actuating cords are movable by hand or by motor.

In another embodiment, the actuating device has one for several or all operating cords common winding drum

End sections are expediently actuating cords which can be moved in opposite directions (each) in pairs with single or multiple wrapping around the winding drum or directly attached to it.

It can be provided that the number of loops is so large that the number of loops included cord length corresponds to the entire range of motion of the movable rails.

It is preferably provided that (in each case) a first end section of an actuating cord by (in each case) a spring-loaded guided on the winding drum Slider guided and fixed beyond the slider on the winding drum, so that the relevant end section in a state completely unwound from the winding drum is subjected to a tensioning force, with (each) a second end section of this or one other actuating cord is fixed directly on the winding drum.

It can be provided here that at least one of the end sections of the actuating cord (cords) on a clamping element that can be locked longitudinally on the winding drum is fixed.

It can be provided that the winding drum is designed as a traveling shaft, which via a thread with each revolution of an approximately one diameter of an actuating cord corresponding axial path shifted.

Fig. 1 eine rechteckige Vorhanganlage mit zwei parallelen beweglichen Schienen zeigt;

Fig. 2 eine trapezförmige Vorhanganlage mit zwei parallelen bewegbaren Schienen zeigt;

Fig. 3 eine Anlage entsprechend Fig. 2 mit einem modifizierten Schnurverlauf zeigt;

Fig. 4 eine Anlage entsprechend Fig. 2 und 3 mit leicht modifiziertem Schnurverlauf und Antrieb mittels Wanderwelle zeigt; und

Fig. 5 einen Ausschnitt aus der Wanderwelle nach Fig. 4 zeigt.

Further advantages and features of the invention result from the following description of two advantageous embodiments, reference being made to a drawing in which

Fig. 1 shows a rectangular curtain system with two parallel movable rails;

Fig. 2 shows a trapezoidal curtain system with two parallel movable rails;

Fig. 3 shows a system corresponding to Fig. 2 with a modified line course;

4 shows a system corresponding to FIGS. 2 and 3 with a slightly modified line course and drive by means of a traveling wave; and

5 shows a section of the traveling wave according to FIG. 4.

Fig. 1 shows a schematic plan view of a curtain system, for example for Shading of a rectangular window opening serves, with an upper, fixedly attached Rail 1 and a lower, also fixedly mounted rail 2, for limitation and fastening the curtain system. Between the fixed rails 1 and 2 are guided two movable rails, namely a first lower rail 3 and a second upper Rail 4, which are movable parallel to each other and to the fixed rails 1, 2. Between the movable rails 3 and 4 a first curtain section 5 is arranged, for example a pleated curtain while between the first movable rail 3 and the lower stationary Rail 2 a second curtain section 6, for example also a pleated curtain, is held. The lateral (vertical) and horizontal edges of the curtain sections 5 and 6 are indicated by dashed lines in FIG. 1, the closed state of the curtain system there is shown. In this example, the movable rails 3 and 4 are used for opening moved down until they rest on the lower stationary rail 2, the respective Combine curtain sections into a compact package.

The movable curtain rails 3 and 4 are according to the invention by first actuating cords 8, 8a and second operating cords 9, 9a moved in the manner mentioned, wherein in addition to this, further tensioning or holding cords, not shown, for stabilization the curtain sections and / or for guiding the movable rails in a known manner Way may be present.

As further shown in FIG. 1, the one operating cord 8 is not one in detail shown actuating device, which is located below the fixed rail 2, through the rail 2 and the curtain section 6 through to the first movable rail 3 guided, in which it is deflected at one end section by 90 ° (to the right) and within the rail 3 runs to its opposite end section, where it again is deflected by 90 ° (upwards) and through the curtain 5 through to the second movable Rail 4 is guided, on which it is fixed at an attachment point 10. For tensioning the actuating cord 8 can be led out a short distance laterally from the rail 4, as Fig. 1 shows.

Another first actuating cord 8a is between the actuating device, not shown and the second movable rail 4 essentially in mirror image and accordingly like the first operating cord 8, the operating cord 8a after the Entering the second movable rail 4 is deflected and through the rail extends to the attachment point 10, where it together with the actuating cord 8 is fixed and a short piece is also led out sideways for tensioning.

The deflections of the first actuating cords, designated 11, 1a, 12, 12a in FIG. 1 8, 8a within the first movable rail 3 can only in the simplest case Deflection pulleys exist and have the task between the confirmation cords and the first movable rail 3 to generate or increase a frictional force. For this Purpose, which will be explained in the context of the functional description, could also have a different purpose Means for generating or increasing the line friction can be provided, for example a braked roller, a slip clutch mechanism, a (partial) wrap of a fixed pin or similar

A second actuating cord 9 is through from the actuating device, not shown the rail 2, through the curtain section 6, through the movable rail 3, through the curtain section 5 and through the second movable rail 4 or without essential Contact past the parts mentioned up to the upper stationary rail 1, where they a deflection point 14 is deflected by 90 ° in the horizontal direction up to one (left) End section of the upper stationary rail 1 runs where it is at a further deflection point 15 is deflected by 90 ° (downwards) in the direction of the second movable rail 4, in which it is redirected by a further deflection by 90 ° (in the horizontal direction) and is led up to the common attachment point 10, with the second operating cord 9 a short distance laterally out of the second rail 4 for clamping purposes is.

Another second actuating cord 9a is essentially symmetrical to the second Actuating cord 9 is arranged, the actuating cord 9a after corresponding deflections 14a and 15a is led directly to the attachment point 10 and also to Clamping purposes emerges slightly from the side of the second movable rail 4.

At the upper deflection points 14, 14a, 15a, 15a within the upper stationary rail 1 are advantageously arranged as low-friction pulleys, while the Deflections of the operating cords within the second movable rail 4 none Subject to movement and are therefore only static deflection points.

The mode of operation of the curtain system according to FIG. 1 is explained below. To the facility from the closed state shown (the curtain sections 5, 6 do not cover one shown window opening or similar as far as possible) in an open state, in which the movable rails 3 and 4 are in contact with the lower stationary rail 2, are the operating cords 8, 8a, 9, 9a in arrows 16 and 17 respectively Moves directions, the first operating cords 8, 8a each at the same speed or be pulled out by a distance as large (arrow 16) as that second actuating cords 9, 9a into the system (arrow 17) are to be released.

When pulling on the operating cords 8, 8a and weakening of the operating cords 9, 9a the two movable rails 3 and 4 moved downwards parallel to each other, whereby their mutual distance does not change, i.e. the curtain section 5 its shape and size maintained unchanged, while the curtain section 6 gradually reduced or folded becomes.

This sequence of movements results from the fact that due to the friction or reinforced Frictional deflection of the first actuating cords 8, 8a on the deflections 11, 12, 11a, 12a on the first rail 3 always in the direction of the lower rail 2 acting tractive force, which results in a corresponding downward movement as soon as the upper rail 4 moves.

When the two rails 3 and 4 have moved down so far that the first movable Rail 3 comes to rest against the lower stationary rail 2 (and the lower curtain section 6 is completely folded), increases for a further downward movement the rail 4 required tensile force on the operating cords 8, 8a around Amount caused by the frictional deflections 11, 12, 11a, 12a in the rail 3, the actuating cords 8, 8a now in the manner of a slip clutch through the pass first movable rail 3. In this movement phase, only the second movable rail 4 moves while the upper curtain section 5 gradually shrinks until the rail 4 bears against the first movable rail 3 and the curtain is completely open.

When closing the curtain system, the operating cords 8, 8a, 9, 9a are reversed Moving direction, i.e. the second operating cords 9, 9a are opposite to the direction of the arrow 17 pulled out of the system, while the first actuating cords 8, 8a counter the arrow direction 16 can be eased. This initially move due to the (Reinforced) deflections 11, 12, 11a, 12a with friction of the first actuating cords 8, 8a in the first movable rail 3, both rails lying closely together upwards until the first movable rail 3 in its end position shown in Fig.1 against a stop, not shown, runs, for example, by a tension wire fixed locking device or similar can be formed. After the first movable has stopped Rail 3 increases the required tensile force of the second actuating cords 9, 9a, because now additionally the (enlarged) friction of the ones running through the deflections 11, 12, 11a, 12a first actuating cords 8, 8a to be overcome. The second movable rail 4 is by continuous pull on the second actuating cords 9, 9a to their shown in Fig. 1 Move to the upper end position in which the curtain is completely closed.

For the function it is evidently indifferent whether, as described, for the first and second Actuating cords each have separate cord sections that are used with a End section are fixed to the common attachment point 10 and with their respective free end section below in the area of the fixed rail 2 from the curtain system are led out, or whether the respective corresponding operating cords 8, 8a on the one hand and 9, 9a on the other hand at their converging in the common attachment point 10 End sections to form (each) a first and a second actuating cord are connected to each other, since always at two mutually corresponding end sections pulled by operating cords 8, 8a and 9, 9a simultaneously and at the same speed or is eased.

Fig. 2 shows a curtain system according to the invention in trapezoidal shape, with one next to the lower stationary rail 2 parallel upper stationary rail 1 yet another, obliquely for this purpose arranged upper stationary rail 1a is provided. Between the fixed rails 1, 1a and 2, two movable rails 3 and 4 'are arranged, the upper rail 4 'is correspondingly shorter than the lower or first movable rail 3.

The course of the cord of the first and second actuating cords 8, 8a, 9, 9a is identical to explained above with reference to FIG. 1. In addition there is a third operating cord 20 provided, which extends from the actuating device, not shown, to the first movable Rail 3 extends, within the rail 3 twice at deflections 21, 22 each is deflected by 90 ° and runs to the upper stationary rail 1a. After two The third actuating cord 20 runs back at deflection points 23, 24 to the actuator. The deflections 21, 22 in the area of the first movable Rail 3 correspond to the deflections 11, 12, 11a, 12a of the first and second actuating cords and increase the friction of the actuating cord guided by the rail 3, while the upper deflection points 23, 24 are formed by low-friction deflection rollers are.

The function of the third actuating cord 20 is to stabilize the actuating cords 8, 8a or 9, 9a during the parallel movement of the first movable rail 3 in their opening (arrow 18) or closing position (opposite arrow 18).

Fig. 3 shows a similar embodiment as Fig. 2, wherein the course of the second operating cords 9, 9a has been slightly modified insofar as that perpendicular to the rails extending sections immediately adjacent to the corresponding sections of the first Actuating cords 8, 8a are shifted.

In addition, in Fig. 3 is a first embodiment of an actuator for Operating cords 8, 8a, 9, 9a and 20 indicated, with the lower end portion of the lower stationary rail 2, a lateral deflection point 26 is arranged, for example a low-friction Deflection roller on which the actuating cords are turned by 90 °, for example downwards, are redirected. At a distance from the lateral deflection point 26 is a lower deflection 27 arranged around the all actuating cords to form a total of two contiguous Strands are interconnected. The third actuating cord 20 is on their end portions with an end portion of the first operating cord 8a and an end portion the second operating cord 9 connected so that there is a separate tensioning process for the third operating cord during assembly or maintenance of the system, while the remaining end portions of the operating cords 9a and 8 also together are connected. Such a connection of the actuating cords to one another is therefore possible and useful because the actuation paths due to the parallel movement of the rails are the same size for all operating cords.

The operation of the curtain system shown in Fig. 3 can be done manually or by a Area of the lower deflection point 27 arranged drive motor by the between the lateral deflection point 26 and the lower deflection point 27 extending cord strands (as a whole) to be moved.

4 and 5 illustrate another embodiment of the invention, in terms of arrangement of rails and operating cords essentially corresponds to FIGS. 2 and 3, wherein only the course of the second actuating cords 9, 9a was changed slightly. The second actuating cord 9a initially extends into the oblique fixed rail 1a, thence into the just stationary rail 1 and then runs into the second movable rail 4 ', while the second actuating cord 9 is approximately in the middle between the two first actuating cords 8, 8a is arranged. This arrangement has the advantage that the curtain material is better supported against sagging and in any other way, since the maximum distance between adjacent cords is less than in the arrangements according to FIGS. 2 and 3. This arrangement also shows that the operating cords arranged according to the invention Take over the role of guide or tensioning cables and replace them partially or completely can.

Fig. 4 also shows a common actuator for all pull cords that in the lower stationary rail 2 is housed. A drive motor 30 drives one in drive shaft 31 extending essentially over the entire length of lower rail 2, which is mounted by means of a thread so that it turns axially with one complete revolution Direction shifted about a diameter of the actuating cords used. Thereby it is ensured that the individual operating cords to be wound on the drive shaft 31 place close to each other on the shaft.

Fig. 5 shows a winding unit 33 of the drive shaft 31, with the two operating cords are wound up and down simultaneously, for example the two end sections of the third Actuating cord 20, the actuating cords 8 and 9a and the actuating cords 9 and 8a (Fig. 4). In Fig. 5, the first pull cord is an example on the left side of the operating unit 8a, while on the right side the second actuating cord 9 is indicated is. As explained above, these operating cords are to be moved so that one wound or unwound and the other unwound or wound at the same speed becomes. 5 shows one of the operating cords to be moved in an operating unit, in the present example, the first actuating cord 8a, by means of one on the drive shaft 31 fixable fastening ring 35 firmly connected to the shaft during the End portion of the second operating cord 9 after a number of wraps, the entire cord length corresponds to the entire winding path, due to a fixed position on the drive shaft 31 fixed deflection ring 36 and by means of a longitudinally displaceable on the Drive shaft 31 held slide 35 a is fixedly connected to the drive shaft 31. A Coil spring 37 is supported with an end section against the deflection ring 35a and presses with its other end portion in the direction of arrow 38 against the slide 35a, so that there is an automatic re-tensioning of the second actuating cord 9 as soon as this is completely unwound from the drive shaft 31 and the drive shaft 31 so far has moved to the left that the deflection ring 36 is located in the region of the deflection eyelet 39.

Of course, in a drive unit, as shown in FIG. 5, other, combinations of two end sections of operating cords, not mentioned be moved if their actuation paths are opposite in the same way, whereby only unnecessarily long or crossing lines within the lower fixed rail 2 should be avoided.

The drive concept according to the invention of a movable rail solely on the basis of an enlarged one or sufficient line friction within the rail is on systems with more applicable as two movable rails, with corresponding deflections in further rails or suitable friction-generating means are to be arranged as in rail 3 of the described embodiments.

LIST OF REFERENCE NUMBERS

1

upper stationary rail

1a

sloping upper fixed rail

2

lower fixed rail

3

first movable rail

4

second movable rail

4 '

"

5

upper curtain section

6

lower curtain section

8, 8a

first operating cords

9, 9a

second operating cords

10

attachment point

11, 11a

redirection

12, 12a

redirection

14

upper deflection point

15

further deflection point

16

arrow

17

"

18

"

20

third operating cord

21

redirection

22

redirection

23

upper deflection point

24

"

26

lateral deflection point

27

lower deflection point

30

drive motor

31

drive shaft

32

drive unit

35

fixing ring

35a

pusher

36

deflector

37

feather

38

arrow

39

guide eyelet

Claims (21)

1. A curtain system comprising at least two movable rails (3, 4) to which at least one curtain portion (5, 6) is fastened, wherein the rails (3, 4) are moved into respective opening and closed positions by cords (8, 8a, 9, 9a) and wherein the cores (8, 8a, 9, 9a) are guided by an actuating device (30, 31) disposed outside the range of action of the rails to the first rail (3) nearest the actuating device and thence to the other or second rail (4), characterised in that at least one first actuating cord (8, 8a), starting from the actuating device (30, 31), is run to the first rail (3) through a friction-generating means (11, 12, 11a, 12a) in the first rail (3), and thence to a fastening place (10) on the second rail (4), wherein at least one second cord (9, 9a), starting from the actuating device (30, 31), runs through at least one stationary turning place (14, 14a, 15, 15a) disposed outside the range of motion of the rails (3, 4) on a side of the curtain system opposite the actuating device (30, 31) and thence, after turning through approximately 180°, runs to a fastening place (10) on the second rail (4) and wherein the actuating device (30, 31) is so constructed that the at least one first actuating cord (8, 8a) is movable in the opposite direction to the at least one second actuating cord (9, 9a).
2. A curtain system according to claim 1, characterised in that the movable rails (3, 4) are guided in parallel with one another.
3. A curtain system according to claim 1, characterised in that the movable rails are pivotable around a common centre of rotation.
4. A curtain system according to any of the preceding claims, characterised in that the second movable rail (4) is shorter than the first movable rail (3) and forms a pentagonal or hexagonal curtain system, wherein at least one third endlessly guided actuating cord (20) is disposed at the side near the first and second cords (8, 8a, 9, 9a), and, starting from the actuating device (30, 31), runs to the first movable rail (3), through a friction-generating device (21, 22) in the first rail, and to at least one fixed turning place (23, 24) and thence, after turning through substantially 180°, runs back to the actuating device (30, 31), wherein the actuating device (30, 31) is so constructed that the end portions of the at least one third actuating cord (20) are movable in the opposite direction to one another.
5. A curtain system according to any of the preceding claims, characterised in that the actuating cords have an adjustable tension.
6. A curtain system according to any of the preceding claims, characterised in that the friction-generating device (11, 12, 11a, 12a, 21, 22) comprises multiple turning of the actuating cord inside the first movable rail (3).
7. A curtain system according to claim 6, characterised in that the friction-generating device comprises a double 90° turn (11, 11a; 12, 12a; 21, 22).
8. A curtain system according to any of the preceding claims, characterised in that pulleys are disposed at the turns (11, 11a, 12, 12a, 21, 22).
9. A curtain system according to claim 8, characterised in that the pulleys have a presettable or adjustable resistance to rotation.
10. A curtain system according to any of the preceding claims, characterised in that the at least one fixed turning place is situated in at least one fixed rail (1, 1a) disposed parallel and/or at an angle to the movable rail (3, 4, 4') on the side opposite the actuating device (30, 31).
11. A curtain system according to any of the preceding claims, characterised in that at least one low-friction guide pulley is disposed at the or each turning place.
12. A curtain system according to any of the preceding claims, characterised in that the actuating device comprises at least one fixed guide pulley (26, 27) around which all the actuating cords 8, 8a, 9, 9a, 20) are guided.
13. A curtain system according to claim 12, characterised in that each end portion of the first actuating cord (8, 8a) is connected to a respective end portion of the second actuating cord (9, 9a).
14. A curtain system according to claim 12 or 13, characterised in that end portions of the at least one third actuating cord (20) are connected to at least one end portion of the first actuating cord (8, 8a) and/or to at least one end portion of the second actuating cord (9, 9a).
15. A curtain system according to any of claims 12 to 14, characterised in that the actuating cords are movable by hand or by a motor.
16. A curtain system according to any of claims 1 to 11, characterised in that the actuating device comprises a common winding drum (31) for some or all the actuating cords.
17. A curtain system according to claim 16, characterised in that end portions of actuating cords movable in opposite directions are respectively fixed in pairs to the winding drum, either directly or after looping it one or more times.
18. A curtain system according to claim 17, characterised in that the number of loops is such that the length of cord therein is equal to the total range of motion of the movable rails (3, 4, 4').
19. A curtain system according to any of claims 16 to 18, characterised in that each case a first end portion of an actuating cord is guided by a respective guide element (36) fixed to the winding drum (31) and is fixed on the other side of the guide element (36) so as to be longitudinally movable and spring-biased (35a, 37) on the winding drum (31), so that the respective end portion is subjected to a tensioning force when completely unwound by the drum, wherein in each case a second end portion of the said cord or of another cord is fixed directly (35) to the winding drum.
20. A curtain system according to claim 19, characterised in that at least one of the end portions of the actuating cords is fixed to a lockable tension element (35) which is longitudinally movable on the winding drum (31).
21. A curtain system according to any of claims 16 to 20, characterised in that the winding drum is in the form of a moving shaft (31) which at each rotation is movable on a screw thread by an axial distance approximately equal to a diameter of an actuating cord.

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