DE19644685A1 - Electromechanical adjustment drive for brightness control - Google Patents

Abstract

The drive moves an aperture plate mounted in a displacement device within the insulating glazing. The aperture plate and the glass have stripes transverse to the displacement direction which are adjustable in their degree of overlap by displacing the aperture plate. The displacement drive has an electric motor (31), a lifting mechanism driven by the motor via its drive shaft (34) and a support (51) between the lifting mechanism and the plate (14). The drive is mounted within the insulating glazing.

Description

The present invention relates to an electromechanical Adjustment drive for brightness control in an insulation glazing.

Such electromechanical actuators are general known from practice.  

With increasing use of large glass areas on buildings it for the air conditioning of the rooms, in particular for glare protection at computer workstations etc. required by the disks transmitted brightness, in particular the direct one To be able to change solar radiation. The glass surfaces are usually through gas-filled double glazing formed to good insulation, good sound insulation as well as to achieve a certain security against burglary.

Brightness is often controlled by external blinds with horizontal slats or through the inside behind interior blinds with horizontal or vertical slats. By changing the inclination of the slats, the light can enter more or less continuously Lich be varied, the blinds usually also can still be fully retracted. The drive of the blinds as well as the slats can be both manual and electromechanical respectively.

These exterior and interior blinds are mechanically very often complex and prone to failure. Beyond that, there is often none stepless brightness adjustment possible, especially if the inclination of the slats is gradual or jerky can be changed. In addition, large cleaning occurs problems with the slats as well as with the Slices to cover. This is particularly so a question of accessibility, as the blinds are neither in the rolled up in the extended state from the side are accessible where they assign to the glass panes.

These disadvantages can be remedied by double glazing, in the interior of an aperture disc in a direction of displacement is arranged adjustable, the diaphragm disk and the  Double glazing is essentially one to move have a transverse stripe pattern and the Stripe pattern of double glazing and panel Adjusting the aperture disc with respect to each other Coverage can be set.

In this way, a by moving the aperture disc stepless control of the coverage of the stripe patterns takes place, by choosing the widths of stripes and light zones in the stripe pattern e.g. B. a brightness control between 50 and 100% is possible. If e.g. B. 50% of the double glazing and 50% of the aperture plate with dark or little light transmission casual stripes are covered, there is a 100% Cover the glass surface when the stripe patterns match each other are staggered, i.e. a dark stripe of the panels pane lies in front of a light strip of insulating glass and vice versa. If, on the other hand, the dark stripes of panels pane and double glazing are brought to cover, so 50% of the glass surface is not darker or opaque tiger stripes covered.

Although this principle of brightness control is very much is promising and most of the disadvantages mentioned above overcomes, so far a simple and mechanically reliable is missing casual adjustment mechanism for the aperture disc. A big The problem in this case is the construction of the double glazing itself, which in a known manner consists of two spaced apart arranged glass panes, with the space through sealing the edges of the pane with the all-round joint must be gas-tight. This will cause fogging the panes from the inside, especially in applications prevents where the double glazing areas with heavily below different temperatures or air humidity from each other  separates. To further prevent fogging, it is also known the interior of the double glazing with a suitable Fill gas.

However, this results in an adjustment mechanism for an aperture disk to be arranged in the space special requirements are to be made, in particular the Preservation of the sealing of the space even in long-term use but also the smoothest possible, stepless movement of the Affect aperture disc.

Against this background, it is therefore the task of the present one Invention, a reliable, simply constructed adjustment drive for a panel in insulating glazing create that meets the above requirements.

According to the invention, this object is achieved with an electromechanical Adjustment drive for an aperture disc in an insulation glazing, with the diaphragm inside the insulating glazing adjustable in one direction is, the panel and the insulating glazing each in essentially transverse to the direction of displacement Stripe pattern, and the stripe pattern by Isolier glazing and panel by adjusting the panel with respect to their mutual overlap, solved in that the adjustment drive an electric motor, one actuated by the electric motor via its drive shaft Lift mechanism and one between the lift mechanism and the Cover plate arranged support includes, and in the interior the double glazing is arranged.

The object on which the invention is based is achieved in this way completely solved.  

The inventors of the present application have recognized that build modern electric motors as steep motors and very narrow that suitable lifting mechanisms can be constructed so that the entire adjustment drive between the two outer disks the double glazing can be placed inside. The great advantage here is that only electrical cables lead into the interior of the double glazing, which is easy to remove are dense. The adjustment drive can be a complete supplier be manufactured in the manufacture of the insulating Glazing only needs to be used, then the Cable entries are sealed together with the edge joint can.

Such electric motors, possibly with an integrated gear are often in the form of long, thin ones Cylinders so that they are in the very narrow space between the Outer panes of the double glazing can be arranged. Another advantage is that the electric motor itself Regarding the speed of the drive shaft very easily adjustable is, the through the possibly to be provided intermediate gear Speed can also be strongly reduced, so that a simple and reliable control of the entire adjustment drive and thus the movement of the diaphragm disc possible is.

In a further development, it is preferred if the lifting mechanism a preferably self-locking gear, which comprises the rotation the drive shaft of the electric motor in a stroke movement of the Supports.

The advantage here is that the adjustment drive is at a standstill can be de-energized, locking etc. is not required Lich, because the diaphragm disc resting on the support itself  not inhibiting gearbox despite the currentless electric motor can adjust. In particular, this measure leads to one very simple structure and a safe function of the new Adjusting drive.

It is further preferred if the transmission is one by one Rotational axis rotatable driven wheel on which the support around a pivot axis parallel to the axis of rotation is pivotally held is.

This measure is also regarding the simple construction advantageous, simply by turning the driven wheel namely the pivot axis from a stroke that the on the output wheel-supported support must follow. Since the support can be pivoted further is mounted on the driven wheel, it follows the stroke, retains but their angular orientation to the diaphragm disc with, if necessary, on the underside of the aperture plate slides back and forth when the support is raised or lowered is about the horizontal movement section of the pivot axis to follow.

It is further preferred if the axis of rotation of the driven wheel is arranged transversely to the drive shaft of the electric motor.

This measure is the small width of the new adjustment drive is an advantage, because the driven gear is here, so to speak parallel to the electric motor, with it, so to speak, in one Level arranged, so that the very narrow adjustment drive can be easily integrated into the double glazing.

In a further development, it is preferred if the output wheel is a worm wheel that engages with a worm stands, which is driven by the drive shaft of the electric motor becomes.  

The use of a worm gear brings next to the perpendicular arrangements of the axes of the screw and Worm gear has the further advantage that the forward and Backward movements can be carried out with very little play, so that the aperture disc can be adjusted continuously. Another advantage here is that such a worm gear can be carried out easily self-locking, so that the The electric motor is de-energized when the adjustment drive is stopped can be switched.

Overall, it is preferred with the new adjustment drive if it comprises a housing on the front of the electric motor is fixed and in which the gear is arranged such that the swivel axis from the housing via the driven wheel can be pulled out.

The first advantage here is that the entire adjustment drive can be designed as a supplier part, which is particularly simple is to be manufactured. First of all, the housing with the Gearbox and the electric motor, whereupon the support attached to the housing or the driven gear of the transmission will. Another advantage is that the housing can be non-positively attached to the insulating glass frame, for what only screws are screwed into the housing from below have to.

It is generally preferred if between the support and the Output gear a lever is arranged which is pivotable at one end pivotable on the pivot axis and other end on the support is stored.

This measure has the advantage that the support is now firm can be attached to the aperture disc, twice  Linkage of the lever allows a compensation of the horizontal movement of the swivel axis when this around the Axis of rotation of the driven wheel is rotated. This makes it possible Wear due to the sliding of the lever that may be required without a lever Avoid support on the orifice plate. Because the prop now can be firmly attached to the orifice plate, the new Adjustment drive the diaphragm disc not only upwards slide but also pull down on the contribution of Gravity can be completely dispensed with. Furthermore the actuator can now be centered on the orifice plate attack so that they no longer jam when moved can, so that a smooth and therefore continuous adjustment the aperture disc and thus a stepless brightness control becomes possible. In other words, the aperture disk is both always in a fixed system during operation as well as at standstill the prop. But this gives another advantage in Connection with a self-locking gear during transport the insulating glazing designed according to the invention, the Orifice plate is safe even in its transport position held without additional locking measures required are.

It is further preferred if the lever is curved.

The advantage here is that the lever turns when turning down the swivel axis around the axis of rotation of the driven wheel, so that the pivot axis can be moved far into the housing can, without causing collisions between the lever and the The axis of rotation of the driven wheel comes. This measure will So in particular space saved, the new adjustment drive builds very narrow or small both laterally and in height.

It is further preferred if the worm wheel is a worm is wheel segment.  

This measure is also advantageous with regard to the overall height Lever can be relatively short, the support or their pivot axis on the lever reaches when driving downwards namely in the missing area of the worm wheel, while the preferably curved lever about the axis of rotation laying around.

Further advantages result from the description and the attached drawing.

It is understood that the above and the next Features to be explained not only in the respective specified combinations, but also in other combinations or can be used alone, without the scope of to leave the present invention.

An embodiment of the invention is in the accompanying Drawing shown and is in the description below explained in more detail. Show it:

FIG. 1 is a section through the new glazing along the line II of Figure 2.

FIG. 2 shows the insulating glazing from FIG. 1 in a view from the right;

FIG. 3 shows the adjustment according to the invention for the insulation glazing of Figure 1 in a partially geschnit requested side view.

FIG. 4 shows the adjustment drive from FIG. 1 in a sectional illustration along the line IV-IV from FIG. 3; and

Fig. 5 the adjustment according to the invention in a representation like Fig. 3, but shown only in the region of the lifting mechanism, wherein the two end positions of the support are indicated.

In Fig. 1, 10 is generally an insulating glazing, which has two outer panes 11 and 12 . Between the outer panes 11 and 12 is an aperture 14 in the interior 15 of the insulating glazing 10 is arranged so adjustable that it can be adjusted in the direction of a direction of displacement double arrow 16 . This adjustment takes place via an electro-mechanical adjustment drive 17 , which is only indicated schematically in FIG. 1, which is arranged below the diaphragm pane 16 in the interior 15 of the insulating glass 10 and sits together with the outer panes 11 and 12 on an insulating glass frame 18 .

The outer pane 11 on the right in FIG. 1 has a pattern of dark stripes 21 and light stripes 22 , while a corresponding pattern of dark stripes 23 and light stripes 24 is provided on the aperture pane 14 . The two stripe patterns run transversely to the direction of displacement 16 , as can be seen in particular from the top view of the insulating glazing 10 in FIG. 2. By moving the diaphragm disk 14 relative to the outer disk 11 , the overlap of the dark and intact strips 21 or 23 and 22 or 24 can be changed such that more or less large intact areas 25 are produced between the strip patterns. In this way, a variable brightness control can be performed, depending on the position of the aperture disc 14 is up to 50% of the glazing 10 transparent, the entire double glazing 10 may be covered by the dark areas 21 and 23 in the other end position of the shutter disc fourteenth

Of course, the dark areas 21 and 23 can represent both completely opaque areas and strips with only less light transmission, that is, tinted strips.

In FIG. 2, a lateral guide 26 can also be seen, over which the diaphragm pane 14 is guided in the insulating glazing 10 . Of course, the orifice plate 14 is provided a corresponding lateral guide 26 and on the opposite side to a tilting of the aperture disc 14 to prevent.

In Fig. 3 is now shown in a partially sectioned side view of the adjustment drive 17 of the invention, which was only indicated schematically in Fig. 1, shown in more detail.

The adjustment drive 17 comprises an electric motor 31 having a cylindrical shape, which is attached to a gear 32 which is fastened to a housing 33 of the adjustment drive 17 . The electric geared motor 31 , 32 thus formed has a drive shaft 34 which projects into the interior of the housing 33 and is connected there to a gear 36 via a coupling 35 .

The transmission 36 initially has an input shaft 37 which is driven by the drive shaft 34 via the clutch 35 . The input shaft 37 , which carries a worm 38 , is rotatably mounted in the housing 33 on both sides of the worm 38 via bearings 39 and 41 .

The gear 36 also has an output gear 43 which projects upward beyond the housing 33 . The driven wheel 43 is a worm wheel 44 which is in engagement with the worm 38 .

In Fig. 3 it can be seen that the worm wheel 44 is only a worm wheel segment. For design reasons, part of the circumference of the worm wheel 44 is not provided.

The worm wheel 44 is rotatably mounted on the housing 33 about an axis of rotation 45 . At its in FIG. 3, the upper portion is the worm wheel 44 pivotally connected to a lever 47 which is mounted on an edge portion of the Schneckenradsegmentes 44 via a parallel to the rotation axis 45 pivot axis 48. It should also be mentioned that the axis of rotation 45 and the pivot axis 48 are arranged transversely to the drive shaft 34 and thus to the longitudinal axis of the electric motor 31 . As a result, the adjusting drive 17 has a particularly small overall width, as can be seen in particular from FIG. 4.

Returning to FIG. 3, it is further shown that the lever 47 , which is pivotably mounted at one end on the pivot axis 48 , is articulated at its other end via a pivot axis 49 to a support 51 , which in turn is connected to the diaphragm disk 14 is connectable. For this purpose, schematically indicated fastening bores 52 are provided in FIG. 3.

In the already briefly mentioned FIG. 4 is a section through the adjusting drive 17 of FIG. 3 along the line IV-IV is shown. FIG. 4 shows the particularly small overall width of the new adjustment drive 17, which is achieved in particular by the use of the screw 38 and worm wheel 44 from existing transmission 36th Fig. 4 further shows that the worm 38 is arranged in the interior of the housing 33 , the worm wheel 44 projecting upward above the housing. At its lower end, the housing has fastening bores 53 , via which it is fastened to the insulating glass frame 18 , which can be seen in FIGS. 1 and 2.

The worm wheel 44 itself has a smaller thickness than corresponds to the clear width in the interior of the housing 33 , only in the region of the axis of rotation 45 does the worm wheel 44 show ring flanges 54 , via which it reaches the inside of the walls of the housing 33 . It should also be mentioned that the shaft forming the axis of rotation 45 is mounted in tabs 55 of the housing 33 which protrude above the actual base body of the housing 33 .

The shaft forming the pivot axis 48 and the lever 47 have a width which is less than the inside width in the interior of the housing 33 , so that the lever 47 can at least partially dive into the interior of the housing 33 when the worm wheel 44 is rotated.

As a result, a low overall height is achieved; it is not necessary for the entire stroke of the support 51 to be formed by the region of the worm wheel 44 projecting upward from the housing 33 .

A further reduction in the overall height is achieved in that the lever 47 is bent, the inner, in Fig. 3 right bending radius speaks ent about the outer contour of the ring flanges 54 ent.

In Fig. 5, the worm wheel 3 is now clipping, in a view similar to FIGS. 44, together with the bent lever 47 in its lower position. This lifting mechanism 56 is able to move the support 51 and thus the orifice plate 14 up or down by a stroke distance indicated at 57 , the lever 47 lying around the axis of rotation 45 in the lower position of the support 51 , as shown in FIG. 5 is shown. The swivel axis 49 arrives in the flight circle of the worm wheel 44 in the area where the circle segment is missing.

Also the curved shape of the lever 47 and the use of a worm gear segment enables a very low overall height in the new adjustment drive 17 , which because of its very small width can also be completely glazed inside an insulating 10 . Only the electrical supply to the electric motor 31 must be passed through corresponding, easily sealed bushings in the interior 15 of the insulating glazing 10 .

The gear 36 is otherwise a self-locking gear, so that when the electric motor 31 is de-energized, the diaphragm disk 14 , which is firmly connected to the support 51 , is securely fixed in its position. As a result, it is not necessary to ensure that the diaphragm pane 14 is secured separately when the insulating glazing 10 equipped in this way is transported. But also in the use of the electric motor can be switched off 31 when the shutter disc 14 has reached the desired position, because of the self-locking mechanism 36, the aperture can not gradually sink down disc fourteenth

Since the support 51 is also connected to the worm wheel 44 via a lever 47 , which is articulated on both sides, it can maintain its horizontal orientation during the downward movement of the pivot axis 48 as a result of a rotation of the worm wheel 44 about the axis of rotation 45 , as shown in FIG is recognizable.

The new adjustment drive thus enables an active pushing up and pulling down the diaphragm pane 14 in the insulating glazing 10 , the support 51 engaging pane 14 in the middle of the diaphragm pane, so that there is no rattling or jerky movement of the diaphragm pane 14 as a result of canting. However, this enables a reproducible, stepless adjustment of the position of the diaphragm pane 14 and thus of the brightness let through the insulating glass 10 .

Claims (10)

1. An electromechanical adjustment drive is arranged on a diaphragm plate (14) in an insulating glass (10), wherein the aperture disc (14) in the interior (15) of the glazing (10) in a displacement direction (16) adjustable in the diaphragm disk (14) and the insulating glazing ( 10 ) each have a stripe pattern ( 21 , 22 ; 23 , 24 ) that runs essentially transversely to the direction of displacement ( 16 ), and the stripe pattern ( 21 , 22 ; 23 , 24 ) of insulating glazing ( 10 ) and aperture plate ( 14 ) can be adjusted by adjusting the diaphragm disk ( 14 ) with respect to their mutual overlap, characterized in that the adjusting drive ( 17 ) comprises an electric motor ( 31 ), a lifting mechanism ( 56 ) actuated by the electric motor ( 31 ) via its drive shaft ( 34 ) and a support ( 51 ) arranged between the lifting mechanism ( 56 ) and the diaphragm disk ( 14 ), and arranged in the interior ( 15 ) of the insulating glazing ( 10 ) t is. 2. Adjusting mechanism according to claim 1, characterized in that the lifting mechanism ( 56 ) comprises a gear ( 36 ) which converts the rotation of the drive shaft ( 34 ) into a lifting movement of the support ( 51 ). 3. Adjustment drive according to claim 2, characterized in that the gear ( 36 ) is self-locking. 4. Adjustment drive according to claim 2 or 3, characterized in that the gear ( 36 ) comprises a rotatable about an axis of rotation ( 45 ) driven gear ( 43 ) on which the support ( 51 ) about a pivot axis parallel to the axis of rotation ( 45 ) ( 48 ) is pivotally held. 5. Adjusting drive according to claim 4, characterized in that the axis of rotation ( 45 ) of the driven wheel ( 43 ) is arranged transversely to the drive shaft ( 34 ) of the electric motor ( 31 ). 6. Adjusting drive according to claim 4 or 5, characterized in that the driven wheel ( 43 ) is a worm wheel ( 44 ) which is in engagement with a worm ( 38 ) which is of the drive shaft ( 34 ) of the electric motor ( 31 ) is driven. 7. Adjusting drive according to one of claims 4 to 6, characterized in that it comprises a housing ( 33 ) to which the electric motor ( 31 ) is fastened on the end face, and in which the gear ( 36 ) is arranged such that the output gear ( 43 ) the pivot axis ( 48 ) can be moved out of the housing ( 33 ). 8. Adjustment drive according to one of claims 4 to 7, characterized in that between the support ( 51 ) and the driven wheel ( 43 ) a lever ( 47 ) is arranged which is pivotable at one end on the pivot axis ( 48 ) and the other end is pivotable ( 49 ) is mounted on the support ( 51 ). 9. Adjusting drive according to claim 8, characterized in that the lever ( 47 ) is curved. 10. Adjustment drive according to one of claims 6 to 9, characterized in that the worm wheel ( 44 ) is a worm wheel segment.