EP1191183B1 - Insulation glass construction with a sheet like roller blind - Google Patents

Abstract

The insulating glass system for a coilable foil sunshade comprises an interior linear guide for alignment of the coiler shaft (3) at a right angle to its displacement direction (S).

Description

The invention relates to an insulating glass arrangement Foil roller blind according to the preamble of claim 1 specified type.

For glazing windows, facades or roofs from Buildings are mostly used with insulating glass. In the basic form, insulating glass consists of two panes, which are gas-tightly connected by spacers so there is no moisture or dirt in the Space between the panes. The distance between the washers is about 20mm and causes a good thermal insulation in terms of heat conduction. For shielding of thermal radiation can insulating glass with a Thermal protection layer. This leaves the Glass, however, also shines through less daylight, which is naturally not desirable.

Facilities that only shade when needed are for Known example in the form of blinds. In the basic form the roller blind is made for vertical installation a winding shaft arranged at the top for winding or unwinding a roll curtain, its freely hanging Weighted down by a pole. With an inclined installation position a counter-pull device is required, the attacks at the movable end and the roller blind taut holds. Foil roller blinds offer particularly effective sun protection, which as a roll curtain a thin sun protection film made of plastic with reflective coating. The invention relates to an insulating glass arrangement according to the Preamble of claim 1.

1. Eine dünne Wickelwelle hat eine geringe Tragkraft, was die maximal mögliche Breite und Länge des Folien-Rollos stark einschränkt.

2. Eine dünne Sonnenschutzfolie, die entlang einer Glasscheibe bewegt wird, kann durch elektrostatische Effekte vom Glas angezogen werden und festkleben.

Furthermore, insulating glass arrangements are known which have a film roller blind for shading in the space between the panes. DE-A-23 14 013.8 and EP 0 483 528, for example, describe such combinations of roller blinds and insulating glass, the second reference relating to a solution especially for inclined installation positions. It goes without saying that the film roller blinds considered here must be extremely compact. The compact design is characterized by a winding shaft with a very small diameter and a thin sun protection film to keep the diameter of the winding small, even with a relatively large number of turns. The compact design is problematic for the following reasons:

1. A thin winding shaft has a low load capacity, which greatly limits the maximum possible width and length of the film blind.

2. A thin sun protection film, which is moved along a glass pane, can be attracted to the glass by electrostatic effects and stick.

The electrostatic effects are particularly difficult to dominate in an inclined installation position because here the sun protection film not hanging freely, but on the lower one Disc rests and causes friction. Thereby creates electrostatic attraction between the film and glass, which significantly affects the function of the film blind can affect.

The invention is based on the object of an insulating glass with an internal foil roller blind for temporary use To create shading of glass surfaces that the above outlined Avoids disadvantages, and in particular an exact one Guide for winding a thin film on track with a small winding diameter over a large number of turns realized.

This task is characterized by the characteristics of claim 1 in conjunction with the preamble features solved.

Further advantages and refinements of the invention result itself from the subclaims.

The insulating glass uses an extremely compact foil roller blind, with a thin sun protection film as a roll curtain towards a winding shaft with a small diameter a winding that fits into the space between the panes or developed into a surface. It draws mainly through a linearly moveable Winding shaft made of sliding friction between the sun protection film and glass surface avoids, and by a Synchronization device, which is a true-to-track winding over many layers and with an extremely small winding diameter guaranteed.

In contrast to known insulating glasses with an internal one Roller blind device, in which a roller blind from unwinds or winds up a fixed winding shaft, here the winding shaft is the moving part, and the sun protection film is unwound at the end of the Partially fixed, so that the entire unwound Surface, depending on the installation position of the insulating glass, hangs motionless or lies on the glass surface.

Zu a):

Tragkraft der Wickelwelle.
Sowohl bei senkrechter als auch bei schräger Einbaulage ist die Wickelwelle am unteren Ende der Sonnenschutzfolie angeordnet, wo sie keine tragende Funktion hat bzw. der Wickel auf der unteren Glasfläche plan aufliegt.

Zu b):

Elektrostatische Effekte.
Da die abgewickelte Fläche der Sonnenschutzfolie keine Gleitreibung erzeugt, sind elektrostatische Effekte ausgeschlossen oder sind bedeutungslos für die Funktion.

This arrangement is more complex with regard to the movable mounting of the winding shaft, but on the other hand there are significant advantages for the combination of film roller blind and insulating glass considered here. In particular, this completely solves the problems described above for the following reasons.

To a):

Load capacity of the winding shaft.
With both vertical and inclined installation, the winding shaft is arranged at the lower end of the sun protection film, where it has no supporting function or the winding lies flat on the lower glass surface.

To b):

Electrostatic effects.
Since the unwound surface of the sun protection film does not generate sliding friction, electrostatic effects are excluded or are meaningless for the function.

It also results from the avoidance of sliding friction on the sun protection film that they are significantly lower Tensile forces and other mechanical loads is exposed. It can therefore be made of extremely thin material be made with regard to here required compact design another advantage is. For the reasons given above thus that the arrangement the use of a winding shaft with a small diameter and thin sun protection film allowed. On the other hand, the experience with Test samples showed that winding up a sufficient wide and long sun protection film on one thin winding shaft is problematic.

It has been shown that with many turns, the inevitably because of the extremely small winding diameter arise, the film is not always wound true to the track. This problem is further exacerbated by that a side guide that with larger dimensions Roller blinds are common when used here very thin and therefore unstable sun protection film, none Solution.

The invention solves this problem by an internal one Linear guide for aligning the winding shaft in the right angle to a linear trajectory to a true track Winding up the sun protection film with a small winding diameter and to guarantee over many layers.

The sun protection film has a thickness of 0.01 up to 0.07 mm, and the winding shaft has a diameter in the range of 5 to 15 mm. The sun protection film consists preferably of polyester. In a variant the sun protection film has an embossed shape Shape of a wrap on, such that it acts as a spring motor has a torque in the direction of winding. Another variant of the shape embossing is kink embossing.

A linear guide is in the form of a cable system realized, consisting of two ropes, which are over pulleys on the sides along the side guide and over Cross are guided synchronously from side to side. The means that the two bearings of the winding shaft in the right Angle fixed to the linear path and in the course of movement are performed synchronously.

The cable pull system is in a special embodiment at the same time drive for moving the winding shaft along the linear path. The ropes are used as a drive belt and the deflection rollers are designed as drive pulleys, and a roller blind drive in the form of an electric motor as the drive of the film blind is to one or coupled several drive pulleys.

In one embodiment, the winding drive consists of two wheels in the left and right side guides roll, and by a one-way clutch and a slip clutch, also combined, with the winding shaft are connected and transmit a torque. The in one variant, both wheels have different large diameters and are each over a freewheel and slip clutch connected to the winding shaft. When winding up, only the smaller one transmits and when unwinding only the bigger and therefore slowly rotating Impeller the torque on the winding shaft.

An electric motor is a variant of the roller blind drive arranged on the movable bearing of the winding shaft. That means that when you operate the electric motor together with the winding shaft a movement along the linear path.

In another variant, the roller blind drive consists of a magnetic coupling attached to the movable bearing the winding shaft is arranged and a displacement force transmitted through one of the two glass panes.

The invention is described below with reference to in the Drawing illustrated embodiments described in more detail. In the description, in the protection claims and in the drawing, those in the back List of terms and terms used assigned reference numerals used.

Fig. 1

eine prinzipielle Anordnung der Rollo-Folie im Scheibenzwischenraum eines Isolierglases, und

Fig. 2

eine schematische Darstellung einer Linearführung.

The drawing shows:

Fig. 1

a basic arrangement of the blind film in the space between the panes of insulating glass, and

Fig. 2

a schematic representation of a linear guide.

In Figure 1 is an insulating glass assembly in cross section shown, the glass panes 1 and 1 'and the Edge bond 2 exists. Between the two panes of glass 1, 1 'is a film roller blind for temporary shading of the glass surface arranged, the distance between the Washers is about 20 mm. The foil roller blind used a thin plastic sun protection film with reflective Coating.

In contrast to usual roller blinds, where a roller slope unwound from a fixed winding shaft, here the winding 41 is the moving one Part, and the sun protection film is 40 on the end side of the part developed to face 42 is fixed. At the The winding 41 moves along winding or unwinding a linear path S, with the entire developed Surface 42, depending on the installation position of the insulating glass, motionless hangs or lies on the glass surface.

In one variant, the sun protection film has a Shape embossing in the shape of the wrap 41 so that it as a spring motor, a torque in the direction of winding having. In another shape, the Sun protection film crease 43 on the developed surface 42 a zigzag or wave profile form.

A mechanism for guiding is shown schematically in FIG of the winding 41 along the linear path S. The winding shaft 3 is rotatably supported on the sides, and the lateral guidance of the bearings along the linear Path S takes place here by a right and left Side guide 5a or 5b. So that the developed area 42 of the thin sun protection film over many layers and Reliable and true to track with a small winding diameter the linear guide 6a, 6b is required. It causes the winding shaft 3 exactly in right angle to the linear path S is aligned.

In the embodiment shown, there is a linear guide 6a, 6b from two ropes 7a, 7b, which over pulleys R along the side guide 5a, 5b and over Cross led from side to side. In one variant this linear guide 6a, 6b can also be used to move the winding shaft 3 can be used along the linear path S. For this purpose, the ropes 7a, 7b as drive belts and the deflection pulleys R designed as drive pulleys, with a Electric motor M as a roller blind drive to one or more Drive pulleys is coupled.

In a variant of the side guide 5a, 5b, this can can also be used for winding drives. The one shown Winding drive consists of two impellers 8a, 8b roll in the right and left side guides 5a, 5b and the torque for winding onto the winding shaft Submit 3. Because the winding drive only has a torque may have in the direction of winding and the tensile force should be as small as possible on the sun protection film, are a one-way clutch and a slip clutch between the wheels 8a, 8b and winding shaft 3 are provided. Of course, slip and free-wheel clutch also realized in combination with each other his.

In a further variant, the two wheels have 8a, 8b different diameters and are individual via freewheel and slip clutch to the winding shaft 3 coupled. Thus, the smaller one couples when winding and thus fast rotating impeller 8a to the winding shaft 3, while unwinding the larger and therefore slowly rotating impeller 8b hitched. In this way becomes during the unwinding of the tension of the sun protection film outward rotation of the winding shaft 3 braked.

LIST OF REFERENCE NUMBERS

1, 1 '

Glass pane in front, in the back

2

edge seal

3

winding shaft

40

end side

41

reel

42

area

43

kink embossing

5a, 5b

Right, left side guidance

6a, 6b

Linear guide right, left

7a, 7b

Rope right, left

8a, 8b

Impeller right, left

R

guide rollers

M

electric motor

S

linear path

Claims (12)

1. Insulation glass construction comprising at least one intermediate space between glass panes (1,1') joined together at their edges by a strip-like member (3) and a sheet-like roller blind arranged in said intermediate space and consisting of a sun-protection sheet and winding roll drive means for delivering a turning force to the take-up roll and lateral guide means (5a, 5b) for guiding the take-up roll (3) support means along a linear path (S) and roller drive means for actuating said sheet-like roller blind, wherein the outermost end of the sun-protection sheet is fastened to one side of the glass panes (1,1') to be covered and adapted to be wound up by a rotating roll (3) and to be pulled off to form a protecting length of the blind (42) and in that the insulation glass construction is provided with inner linear guide means (6a, 6b) to align and maintain said roll shaft (3) at a right angle with respect to the linear path (S).
2. Insulation glass construction according to claim 1, wherein the sun-protection sheet is 0.01 to 0.07 mm thick.
3. Insulation glass construction according to claim 1 or 2, wherein the diameter of the take-up roll (3) is 5 to 15 mm.
4. Insulation glass construction according to any one of claims 1 to 3, wherein the sun-protection sheet is made of polyester and is temporarily heated to deform into desired embossments.
5. Insulation glass construction according to any one of the precedent claims, wherein the embossing pattern of the sun-protection sheet is in the form of the wound-up blind (41) and designed to act as a spring motor for delivering a torque in the winding-up direction of rotation.
6. Insulation glass construction according to any one of the precedent claims, wherein the embossing pattern of the sun-protection sheet forms angular indentations (43) extending parallel or longitudinally in regard to the roll (3) and the indentations where they turn either present an alternately zigzagged profile or have the turning angle uniformly oriented in the direction of rotation of the blind (41).
7. Insulation glass construction according to any one of the precedent claims, wherein the linear guide means (6a, 6b) include a traction cord system consisting of two cords (7a, 7b) running on guide pulleys (R) which are guided at the side edges and along the lateral guides (5a,5b) and crosswise from one side to the other such that the two support means of the roll (3) are moving in synchronism.
8. Insulation glass construction according to any one of claims 1 to 6 comprising the linear guide means (6) according to claim 7, wherein the cords (7a, 7b) are designed to function as drive belts and the guide pulleys (R) as drive pulleys for delivering a turning force and that the roller blind drive is comprised of an electric motor (M) which is coupled to one or more of said guide pulleys (R).
9. Insulation glass construction according to any one of the precedent claims, wherein winding roll drive means consisting of two track wheels (8a, 8b) to be moved along the left or right guide means (5a, 5b) is provided and an overrunning clutch and a friction clutch for coupling one or both track wheels (8a,8b) with the roll (3), such that the overrunning clutch is engaged only in the winding-up direction and the friction clutch transmits a torque up to a predetermined maximum value.
10. Insulation glass construction according to any one of claims 1 to 8 and comprising track wheels (8a, 8b) according to claim 9, wherein both track wheels (8a,8b) are different in diameter and adapted to be engaged individually through the overrunning clutch and friction clutch to the roll (3) such that during the winding-up movement only the smaller and therefore fast running wheel (8a) and during the withdrawing movement only the larger and therefore slower moving wheel (8b) is connected and transmits a torque in the winding-up direction of rotation up to a predetermined maximum value.
11. Insulation glass construction according to any one of the precedent claims, wherein the electric motor (M) for driving the sheet-like roller blind is arranged at the displaceable support means of the take-up roll.
12. Insulation glass construction according to any one of the precedent claims, wherein the roller drive means is comprised of a magnetic clutch which is arranged at the displaceable support means of the roll (3) and transmits a sliding force along the linear path (S) through one of both glass panes (1,1').

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