CZ200264A3 - Roll-blind, particularly roll-blind against insect - Google Patents

Abstract

Roller blind, especially an insect-protection roller blind, for covering a window or door opening comprises a cover, e.g. insect-protection fabric, wound/unwound on a winding shaft, and roller blind guides arranged at the side of the window/door opening and open toward the covering. For infinitely variable locking of the cover, at least one rotating lock (5) engaging in the roller blind guide is provided which is transferred against spring force from a blocking position into a release position. Preferred Features: The rotating lock has an anchor (10) and a leaf (11), preferably a two-armed leaf, rotating against it. Two rotating locks are attached opposite each other to the end of the cover.

Description

Technical field

The invention relates to a blind, in particular an insect screen, for covering a window or door opening, with a screen, for example, a fabric wound onto a winding shaft, arranged laterally to the window open towards the screen.

against insects, unwound and with roller guides, or door openings; and

BACKGROUND OF THE INVENTION

Such a roller blind is described, for example, in DE 196 39 478 A1. Roller guides with resiliently deformable gripping elements, which are stiffened bristles, are provided. In this way, reliable lateral guidance can be ensured at a high cost during manufacture and assembly without the risk of gaps or tearing of the screen or insect protection fabric.

A handle is provided to operate this known roller blind, which can be locked on the lower transverse portion of the respective window frame. Intermediate shutter positions, such as a semi-open position, cannot be realized.

According to the state of the art, a releasable brake is also proposed in order to realize a continuous shutter of the roller shutter, in accordance with the state of the art. However, such a measure requires a relatively large construction of the respective winding shaft, which is particularly disadvantageous if such a roller blind is to be installed in existing installations in which only limited building space is available. . By way of example, a roller shutter box for receiving a roller shutter cover and additional roller shutters, in particular net insect screens. Similar problems arise when such a roller blind is to be combined, for example, with a caravan window or the like (see DE 196 51 618 A1).

SUMMARY OF THE INVENTION

SUMMARY OF THE INVENTION It is an object of the invention to provide a roller shutter, in particular an insect protection roller shutter, of the aforementioned embodiment which, in a compact and simple design, allows a continuous detent.

This object is achieved by a roller shutter according to the invention, characterized in that at least one rotation prevention latch engaging in the roller shutter is provided for continuous locking of the screen, which can be moved from the locking position to the released position against the spring tension. This anti-rotation bar is usually mounted on the side of the screen and engages in the roller guide. Usually, two such anti-rotation bars are used, which are arranged opposite the sides of the screen and engage in the roller guiding.

The roller guide is usually a U-shaped profiled rail, which is designed as a plastic or metal profiled rail. Such roller blind guide • ·

-, ········· ο ·· · · ······ · · · · · ····················· · It can be combined with an optimally designed roller blind guide, wherein the described roller blind is arranged in or on the roller blind housing. In this case, the roller shutter guide and the roller shutter guide can together form a component or can be joined together by means of a snap connection, as described in DE 199 46 405 7.

The roller shutter, in particular the insect protection roller, is preferably a spring roller shutter which operates in such a way that the retractable screen must be unwound from the winding shaft against the spring tension and, when the screen is released, winds up or rolls back onto the winding shaft . Such a spring roller blind is described in detail in DE 196 40 846 A1, which is considered here.

In order to obtain the locking or releasing position, the roller blind according to the invention is provided with an operating element which is generally mounted on a rail arranged at the end of the screen which in addition carries the two opposing pegs preventing rotation. In principle, however, it is also possible to position the control element independently of the rail.

The actuator may be an actuating slide or a pulling member. This performs a substantially linear movement in the winding direction of the screen so that the rotation prevention bar can be moved to different positions (at least the locking position and the released position). A rotary knob may also be suitable as an actuator, as long as it is ensured that, in this case, too, the rotation-preventing bolt, occupying mostly the sides of the rail, can be brought into the roller guide in different positions.

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The control actuates at least two rotary levers associated with the roller guiding. These rotary levers convert the linear movement of the actuator in the winding direction of the screen into a combined rotational pulling motion perpendicular thereto. This combined rotary pulling motion - as in the winding direction - takes place in the plane of the stretched screen, only substantially perpendicular to the winding direction. This will be explained in more detail in the description of the figures.

In any case, the linear movement of the actuator ensures that the respective rotation prevention bolt is converted against the spring tension from its locking position to the released position.

The anti-rotation bar usually comprises an anchor and a rotating wing against it. This wing is preferably a two-arm wing, with its two ends blockingly engaging the open roller shutter guide. In this case, the sash or the two-sash sash, in the released position of the barrier, prevents rotation, as a rule, in a collinear manner with respect to the longitudinal formation of the groove corresponding to the roller guide. This ensures that the screen and thus the rail fastened at the end of the screen can move freely back and forth in the roller guide groove when the barrier preventing rotation is in the released position.

In the locking position, on the other hand, the sash or the two-sash sash forms an angle with the said end plate or the roller guide groove extending in the longitudinal direction. As a result, the two wing ends abut the U-shaped roller shutter guide, which is generally wedge-shaped in cross-section. Roller blind ··· ································· that is, in the blocking position of the barrier preventing rotation in the roller guiding, it is reliably wedged. It must only be ensured that the wedge force generated is greater than the restoring force of the spring blind so that the screen remains in the desired position.

When moving from the blocking to the released position, the wing usually performs a combined rotational and linear movement against the spring tension. To obtain this movement, the wing is connected to a control pin which is controlled by a coupling device connected to the control element. The coupling device may be a rod, a rope, a suitable fiber or the like.

According to the invention, a roller blind, in particular an insect protection roller blind, is always provided, which is characterized by a particularly compact and simple construction. No complicated releasable brake is required, as is the case with the prior art (see US 6,142,211). Nevertheless, it is possible to carry out a continuous arrestment of the blind or screen, and thus a flexible and variable covering of the respective window or door opening. For this purpose, it is only necessary to actuate the actuator so that the anti-rotation bolt is transferred from its normally engaged locking position to the released position.

Since two anti-rotation barriers are provided on both sides of the screen or on both sides of the end rail, the screening of the screen can be reliably avoided. When the actuating element is actuated, the two anti-rotation barriers are in their released position so that the screen, the end rail and hence the roller blind can move freely back and forth in the roller guides.

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Only when the control element is released again do the anti-rotation barriers move to their locking position, since they are actuated by a spring, which usually surrounds the control pin connected to the wing and is supported on the anchor base. In this way, the blind and also the screen can be continuously locked so that, for example, the sliding door behind the blind can be closed, the flowers placed on the window sill can be watered or the shutters can be manipulated. Also, it is no longer necessary to pull out the entire blind due to these activities, which is a significant advantage in insect-rich summer.

Thanks to its simple and compact design, the roller shutter can be easily combined with the roller shutter cabinet, in particular to integrate it. Also, no special precautions are needed with regard to roller guides, so that assembly is also problem-free. This is to be seen as the essential advantages of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is explained in more detail below with reference to the embodiment shown in the drawings, in which:

FIG. 1 is a perspective view of a roller shutter according to the invention;

FIG. 2 is a schematic cross-section of FIG. 1 along line A-A;

FIG. 3 is a view of the control element in the X direction of FIG. 2 with the screen removed;

Fig. 4 is a perspective view of a pawl to prevent rotation; FIG. and FIG. 5 is a front view of a pawl preventing rotation with different functional positions.

DETAILED DESCRIPTION OF THE INVENTION

The figures show a roller blind according to an exemplary embodiment of an insect protection roller blind. This blind serves to cover the window or door opening [L. The basic construction of the roller blind is provided with a winding shaft 2, on which a screen 3 unwound and wound there from here has its place. As regards the screen 3, in the embodiment it is a fabric, namely gauze. Of course, the use of a more or less transparent screen for protection against the sun can also be considered here. Various combinations are also contemplated. In addition, the screen 3 can be provided as a plastic foil or fabric cover. In addition, the roller blind shown is suitable not only for covering a window or door opening 1 in buildings, but also for combination with, for example, caravan windows, etc.

The winding shaft 2 is surrounded by a torsion spring 4, only indicated here. This torsion spring 4 is tensioned during unwinding of the screen 3 from the winding shaft 2. The winding takes place almost automatically by relieving the prestressed torsion spring 4, as is generally known for automatic roller shutters (see, for example, GB-A 927 567). In any case, the torsion spring 4 ensures that the screen 3, unwound from the winding shaft 2, automatically rewinds the winding shaft 2 if it is not provided with a detent.

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In the context of the invention, this arresting is effected by means of rotation prevention bolts 5 which engage in roller shutter guides 6 extending on the sides of the window or door opening 11, respectively. For this purpose, the shutter guides 6 are open towards the screen 3 and are generally U-shaped in cross-section. The screen 3 is connected at its end by a rail which is guided in the longitudinally extending groove 8 of the shutter guide 6. on both sides of the window or door opening 11 and are in the form of U-shaped roller guide rails 6, respectively.

Brushes (not shown) on both sides of the U-shaped guide rails 6 with their bristles facing the screen 3 serve to close the insect screen 2 in the roller guide 6, as described in the above-mentioned DE 196 39 478 A1.

On both sides of the rail 7, rotation prevention bars 5 are arranged, as shown in the enlargement of FIG. 4. The two rotation prevention bars 5 are diametrically opposed to one another on the control element 16 arranged centrally on the rail. The anti-rotation bolt 5 ensures a continuous arrestment of the blind and hence of the screen 13 by being brought into its locking position. This function position is normally taken by the rotation prevention bar 5, as the tongue 9 ensures that the rotation prevention bar 5 is in its blocking position, shown in FIG. In contrast, the released position of the anti-rotation bar 15 is shown in dashed lines in FIG.

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The anti-rotation bolt 5 is provided with an anchor 10 and a pivot wing 11. By means of the anchor 10 or its end plate 19, the rail 7 is guided in the groove 8 of the roller guiding 6. As regards the wing 11, which is housed in the recess 12 at the end of the control pin 13.

The control pin 13 is provided with guide pins 14 arranged diametrically to the axis of rotation D which engage in guide 15 in the armature 10. This guide 15 runs helically so that the control pin 13, guide pins 14, recess 12 and two-arm wing 11 perform a combined pivoting and linear movement against the tension of the tongue 9 when a linear force, or a combined rotational and linear force, respectively, is applied in the direction of the axis of rotation D as shown by the double arrow L in Fig. 4.

As part of this combined rotational and linear movement against the tension of the tongue 9, the two-arm wing 11 is moved from its normally engaged locking position (indicated in full in FIG. 5) to a released position (shown in dashed-up in FIG. 5). The forces shown in FIG. 4 by the double arrow 4 have their origin in the actuating element 16, which is connected to the actuating pin 13 via a connecting device 17.

The actuating element 16 is, in an exemplary embodiment, a actuating slide 16 which can be manually pushed downwards in the direction of the winding direction W in the sense of the arrow of FIG. 2 and which automatically jumps back upwards from this position. In principle, the reverse operation of the slider upwards and its retraction downward - both also in the direction of rotation - is also possible. In any case, this manual release of the control element 16 results in the two rotation-preventing bar 5 or the two-armed wings 11 arranged at the end of the rail 11 being transferred from their normal locking position. to the relaxed position.

In the blocking position, the double-winged wing 11 abuts with its ends 18 from the inside on the U-shaped arms of the roller guide 6, as shown in FIG. 5. In this case, the double-wing 11 closes with the groove 8 and the longitudinal part the angle α, which is in the range between 40 ° and 90 °. The same angle α of course also occurs between the two-winged wing 11 and the end plate 19 of the armature 10.

If the actuating element 16 is now manually applied, the force thus exerted on the coupling device 17 results in the actuating pin 13 being pulled to the right in FIG. 4. This pulling movement is converted by means of a guide pin 14 and the corresponding guide 15 in the armature 10 into a combined rotational and linear movement, at the end of which the two-arm wing 11 assumes a relaxed position, indicated by dash-dotted lines in FIG.

Immediately thereafter, the rail 1 and thus the screen 3 can be resiliently moved back and forth in the longitudinal direction in the respective roller guide 6, as long as the control element 16 is manually applied. As soon as the actuating element 16 is released, the coupling device 17 stops acting and the anti-rotation barriers 5 return to the locking position. The screen is locked.

The actuator 16 converts the linear movement in the direction of rotation W of the screen 3 associated with the operator into a linear movement perpendicular thereto in the longitudinal direction of the rail Ί. This perpendicular direction is represented by the double arrow L in Figure 1.

For this purpose, the actuating element 16 according to FIG. 3 is provided with two pivoting levers 20 corresponding to the roller guides 6. These pivoting levers 20 rotate about an axis 21. Along the pivoting lever 20, a guide pin adjusting the pivoting lever 20 moves in the winding direction W when the actuator 16 is actuated manually in this direction. It causes the pivot lever 20 to deflect, namely in the longitudinal direction L of the rail. In FIG. 3, this is shown by an arrow. It is in this longitudinal direction L that the actuating pin 13 is influenced to adjust the bolt 15 so that the drive chain is evident from the actuating element 16 via the connecting device 17 to the actuating pin 13 and finally to the double-arm 11.

Finally, with reference to FIG. 2, the actuator 16 is located in the latch box 22, which is recessed into the rail or slid onto it. This is particularly simple in terms of production. A coupling device 17 emerges from two double-sided openings 23 of this latch housing and provides the described actuation of the control pin 13 by means of an actuator 16. The coupling device 17 is a cable in the embodiment shown.

Claims (7)

PATENT CLAIMS 61-61 1 to 3, characterized in that the sash (11) performs a combined rotational and linear movement against the spring tension when moving from the locking position to the released position. characterized Roller shutter, in particular an insect screen, for covering a window or door opening (1), with a screen (3), for example an insect screen, unwound and wound on a winding shaft (2), and roller shutter guides (6) arranged laterally to the window or door opening (1) and open towards the screen (3), characterized in that at least one anti-rotation bolt (5) engaging in the roller shutter (6) is provided for continuous locking of the screen (3), which can be moved from the locking position to the released position against the spring tension. Roller shutter according to claim 1, characterized in that the anti-rotation bar (5) comprises an anchor (10) and a rotatable wing (11), in particular a two-arm wing (11). Roller shutter according to claim 1 or 2, characterized in that the sash (11) in the released position of the anti-rotation bar (5) runs collinearly with respect to the groove (8) of the roller guide (6) and closes with the groove (8) given angle (α). Roller shutter according to one of the claims Roller shutter according to one of Claims 1 to 4, characterized in that the wing (11) is 0 · 0 0 • at «00« · · 0 0 0 0 0 0 · 0 0 0 0 «0 0 0 • 0 0 0 0 · 0000 connected to a control pin (13) which is controlled by a coupling device (17) connected to the control element (16). Roller shutter according to one of Claims 1 to 5, characterized in that an operating element (16) is provided for displaying the locked and released position, which is preferably mounted on a rail (7) fixed at the end of the screen (3), the rails (7) carries a rotation prevention bar (5). Roller shutter according to one of Claims 1 to 6, characterized in that the actuating element (16) is designed as an actuating slide (16) or a pulling member and essentially performs a linear movement in the direction of rotation (W). screens (3) k converting latches (5) preventive turning to different positions. 8. Blind according to one of claims 1 to 7 v y z n a č u j ící s e t í m that control element (16) controls least two roller guides (6) respectively rotatable a lever (20) that changes the linear movement of the control element (16) in the direction (W) of the screen rotation (3) to a combined rotational and tensile movement perpendicular thereto, by means of which the bar (5) prevents rotation position i transferred against to the relaxed position. Tension springs of your blocking 9. Roller blind according to one of the claims 1 to 8, v y z n ačující s e t í m that on the end screens (3) two opposites are arranged latches (5) to prevent rotation.