EP2143864B1 - Window, door or similar and stay with a stay arm for such a window, door or similar - Google Patents

Abstract

The window (1) or door has a motor drive device arranged on a quadrant arm (7). The motor drive device drives a deployment arm (6) with a closed wing (3) using locking movement and/or unlocking movement by pulling a movable locking element (15). The deployment arm and the quadrant arm are driven by the motor drive device using driving and activating movement. The quadrant arm forms an opening scissor (4) between the closed wing and a fixed frame (2). The quadrant arm and the deployment arm are hinged in a hinging position.

Description

The invention relates to a window, a door or the like according to the preamble of claim 1 and a two-armed Ausstellschere according to the preamble of claim 10.

EP 1 223 287 A2 discloses an arrangement in which a Ausstellarm a Ausstellschere is articulated with a longitudinal end of a wing bracket, which in turn is fixedly connected to a wing of a skylight or a flap. The opposite longitudinal end of the extension arm is pivotally mounted on a pivot piece, which is guided on a scissor body mounted on a frame parallel to the Blendrahmenhauptebene displaced. A likewise provided on the scissor body spindle drive comprises a spindle nut, which can be moved by motor driven along a spindle of the spindle drive. About a link assembly, which is articulated on the one hand on the spindle nut and on the other hand on the extension arm, drives the spindle nut their movement along the spindle of the spindle drive to the extension arm with a pivoting movement. Depending on the direction of movement of the spindle nut and the resulting pivoting direction of the extension arm of the wing is opened or closed. If the wing is closed and locked, then the spindle nut initially performs an idle stroke, ie a partial movement, which does not yet lead to an opening movement of the wing during its movement to open the wing starting from its initial position on the spindle. This idle stroke is made possible by appropriate design of the provided between the spindle nut and the extension arm handlebar assembly. The idle stroke of the spindle nut serves to unlock the wing locked on the frame. For this purpose, a driver is mounted on the spindle nut, which has an open in the opening direction of the wing receptacle. When closed and locked wing engages in this recording a pin of a locking linkage, which is guided on the wing in the wing circumferential direction. During its idle stroke, the spindle nut displaces the driver and, via it, the pin engaging in the receptacle of the driver with the locking rod in the circumferential direction of the blade. As a result, the wing is unlocked from the frame. With continued movement of the spindle nut causes the link assembly a pivoting movement of the idle stroke of the spindle nut ortsunveränderlichen Ausstellarmes and associated therewith an opening movement of the wing. In this case, the pin of the wing-side locking linkage exits from the receptacle of the driver on the spindle nut. If the opened wing is closed again, the pin of the wing-side locking linkage must run into the receptacle of the driver on the spindle nut during the closing movement of the wing. Only under this condition, the wing can be transferred to its fully closed position or the fully closed wing by means of the spindle drive on the Lock frames are locked. A shrinkage of the pin of the wing-side locking linkage in the recording of the driver on the spindle nut during the closing movement of the wing is ensured when the locking linkage with its pin after unlocking the wing does not change its position in the wing circumferential direction. However, this is not always guaranteed in practice. Rather, there is a risk that the wing-side locking linkage is moved with its pin unintentionally in cleaning operation on the open wing in the wing circumferential direction. If the wing is moved with such a mispositioned pin in the direction of the frame, the required positive connection between the pin of the wing-side locking linkage on the one hand and the recording of the driver on the spindle nut of the frame side spindle drive can not be made.

Generic prior art is known from DE 101 57 094 C1 as well as out EP 1 801 340 A1 ,

DE 101 57 094 C1 relates to an opening device for a wing of a window, a door or the like, which has a fixed to a window frame of the relevant wing base and a Ausstellschere. The cut-out scissors are designed as Y-scissors and include a stay arm and a holding arm. The extension arm is articulated at one end to the base part and at the other end to the wing. Between the two end-side articulation points of the extension arm is pivotally connected to the support arm. This in turn is articulated at its end remote from the extension arm on the base part. A provided in addition to the extension arm and the support arm support arm is pivotally mounted at one end to the support arm and at the other end to the base part. An intervening in the base part for this purpose Scissor pin of the support arm forms a connection element, via which the relevant end of the support arm is connected to a motor drive device. The motor drive device is provided on the base part of the opening device and thus on the frame of the previously known arrangement.

EP 1 801 340 A1 describes a Ausstellschere with a Ausstellarm and with another scissor arm, wherein a motor drive device of the Ausstellvorrichtung is attached to the fixed frame of the relevant window, the relevant door or the like.

Starting from the generic prior art, the object of the present invention is to provide a window, a door or the like with a Ausstellschere or a Ausstellschere, which forms a compact unit.

This object is achieved according to the invention by the devices according to patent claims 1 and 10.

According to the claim the extension arm of the wing drive is indirectly or directly hinged to the movable locking element. There is a permanent connection of the movable locking element to that one drive element, by means of which the transfer of the movable locking element is effected in a locking position or in an unlocked position. A functionally reliable locking and / or unlocking of the wing on the fixed frame is ensured as a result. The extension arm assumes a double function. First, it serves as an element of the wing drive to relocate the wing with an opening movement or with a closing movement relative to the fixed frame. On the other hand, the opening arm acts as part of the locking device for locking and / or unlocking the wing on the fixed frame. The extension arm is part of a two-armed Ausstellschere and connected as such at a common pivot point with another scissor arm. The scissor construction allows the opening and closing movement of the wing with respect to the fixed frame and can be used simultaneously for locking and unlocking the wing on the fixed frame. Since the motor drive device is provided for the extension arm on the further scissor arm, the two-armed Ausstellschere forms a compact unit that can take over a plurality of functions relevant to the invention. Also in the interest of a particularly compact and also in the interests of a structurally particularly simple structure of the overall arrangement in the case of the invention, both the locking movement and / or the unlocking movement and the drive pivoting movement of the extension and provided with the motor drive device further scissor arm means and the same drive device executed. As drive means preferred is a drive with a reversible in its direction of rotation electric motor.

Particular embodiments of the invention according to claims 1 and 10 emerge from the dependent claims.

According to claim 2 is provided in an advantageous embodiment of the invention as a movable locking element guided on the respective wing or the respective fixed frame in the circumferential direction drive rod. The extension arm according to the invention and the Ausstellschere invention serve in this case to actuate a so-called "central closure".

According to claim 3 provides in a further development of the invention, a guide device for a defined movement of the stay both in the locking movement and / or the unlocking movement as well as in the drive pivoting movement.

From a guide device, which has proven in practice as permanently reliable function, makes the Erfindungsbauart according to claim 4 use. Go track sections of the claimed track directly into each other, so the locking movement and / or the unlocking movement and the drive-pivoting movement of the stay can continuously and thus follow each other without interruption.

Kinematically simple and thus control technology easily controllable conditions arise when the point of articulation of the extension arm, which rests from the connected to the movable locking element pivot point, driven in the locking movement and / or during the unlocking movement and during the drive pivoting movement with a translational movement and the translational movement is converted by means of the guide device of the extension arm in a drive-pivoting movement (claim 5).

In the interest of a compact design, it is recommended that the guide device, by means of which the extension arm is guided in its movements to integrate in the Ausstellschere (claim 6).

Under certain circumstances, it may be necessary to release the extension arm of the movable locking element. For this purpose, the feature according to claim 7 is provided. It is conceivable to release the connection of the extension arm and movable locking element, for example, for assembly or disassembly purposes but also to allow for relative movements of the wing and fixed frame.

A particularly practice-relevant application of the invention relates to claim 8. Accordingly, the scissors invention is provided on a window for installation in inclined surfaces, preferably on a living roof window. Usually, the wing of such a window can be pivoted to a cleaning position. Previously, a lock to be solved by which the wing is prevented from undesirable movement in the cleaning position. This locking device is decoupled from the extension arm according to the invention or from the Ausstellschere invention. The use of the arrangement according to the invention for locking and / or unlocking and for opening and closing the sash consequently does not impair the usual functionality of windows for installation in inclined surfaces.

An additional locking device, as provided in the case of Erfindungsbauart according to claim 9, makes it possible to set the two scissor arms of the Ausstellschere together. After the Ausstellschere is connected on the one hand to the fixed frame and on the other hand with the wing, the claimed additional locking device can serve in particular to produce the required contact pressure between the wing and fixed frame.

Fig. 1:

ein Fenster mit einem Flügel, einem festen Rahmen sowie mit einer zwischen dem Flügel und dem festen Rahmen vorgese- henen Ausstellschere bei maximal geöffnetem Flügel,

Fig. 2:

die Anordnung gemäß Fig. 1 bei geschlossenem und verriegel- tem Flügel,

Fig. 3a:

die Ausstellschere gemäß Fig. 1 bei geschlossenem und ver- riegeltem Flügel,

Fig. 3b:

die Ausstellschere gemäß Fig. 1 bei geschlossenem und ent- riegeltem Flügel,

Fig. 3c:

die Ausstellschere gemäß Fig. 1 bei teilweise geöffnetem Flü- gel,

Fig. 3d:

die Ausstellschere gemäß Fig. 1 bei maximal geöffnetem Flü- gel,

Fig. 4:

ein Wohndachfenster mit einem Flügel, einem festen Rahmen sowie mit einer zwischen dem Flügel und dem festen Rahmen vorgesehenen Ausstellschere bei geöffnetem Flügel,

Fig. 5:

die Anordnung gemäß Fig. 4 bei in einer Putzstellung befindli- chem Flügel,

Fig.6:

die Anordnung gemäß den Fign. 4 und 5 bei geschlossenem und verriegeltem Flügel und

Fig. 7:

die Anordnung gemäß Fig. 6 bei in einer Putzstellung befindli- chem Flügel.

The invention will be explained in more detail below with reference to exemplary schematic illustrations. Show it:

Fig. 1:

a window with a sash, a fixed frame and an outrigger provided between the sash and the fixed frame with the sash open to the maximum,

Fig. 2:

the arrangement according to Fig. 1 with closed and locked wing,

Fig. 3a:

the scissors according to Fig. 1 with closed and locked wing,

3b:

the scissors according to Fig. 1 with the wing closed and unlocked,

3c:

the scissors according to Fig. 1 with partially opened wing,

Fig. 3d:

the scissors according to Fig. 1 at maximum open wing,

4:

a roof-mounted skylight with a wing, a fixed frame and an opening shears between the wing and the fixed frame with the wing open,

Fig. 5:

the arrangement according to Fig. 4 with wings in a cleaning position,

Figure 6:

the arrangement according to the FIGS. 4 and 5 with closed and locked wing and

Fig. 7:

the arrangement according to Fig. 6 with wings in a cleaning position.

According to Fig. 1 a window 1 comprises a fixed frame 2, a wing 3 rotatably mounted thereon, and an opening scissors 4 provided between the fixed frame 2 and the wing 3. Relative to the fixed frame 2, the wing 3 is provided with an opening movement and a closing movement about a wing Rotary axis 5 movable. Both at the Opening movement and during the closing movement of the wing 3 is driven by the Ausstellschere 4.

The Ausstellschere 4 is designed as a two-armed Ausstellschere and includes a stay arm 6 and a further scissor arm 7. The extension arm 6 is pivotally mounted at a wing-side articulation point 8 on a wing frame 9 about a drive pivot axis 10. At one in the FIGS. 3a to 3d recognizable joint pivot point 11 of the stay arm 6 and the further scissor arm 7 are articulated to form a drive pivot axis 12 to each other. At its end remote from the common pivot point 11 end of the further scissor arm 7 is pivotally mounted at a pivot point 13 to form a drive pivot axis 14 on the fixed frame 2. The drive pivot axes 10, 12, 14 are parallel to each other and parallel to the in Fig. 1 dash-dotted lines indicated main level of the window 1 and the fixed frame. 2

The wing frame 9 at the wing-side articulation point 8 of the extension arm 6 is fixed to a movable locking element in the form of an in Fig. 1 only suggestively recognizable drive rod 15 connected. In a conventional manner, the drive rod 15 is accommodated in a fitting part groove on the folded side of the wing 3 and displaceable in the circumferential direction of the wing 3. It is covered on the fold side by a faceplate 16. Through a slot 17 of the faceplate 16 through the connection between the sash bracket 9 and the drive rod 15 is made. Another slot 18 of the faceplate 16 is penetrated by a locking pin 19, which is also attached to the drive rod 15. The locking pin 19 on the wing 3, a closing piece 20 is assigned to the fixed frame 2. In a similar way are in the in Fig. 1 unrecognizable folding surfaces of the wing 3 more locking pin 19 and the fixed frame 2 more closing pieces 20 are provided. One of the further locking pins 19 is in Fig. 1 to recognize. In this way, the drive rod fitting provided on the wing 3 forms a locking device in the form of a central closure 21 for the wing 3.

The articulated with the extension arm 6 further scissor arm 7 of the Ausstellschere 4 superimposed as a spindle drive 22 running motor drive device for the stay 6th Ausweislich the FIGS. 3a to 3d the spindle drive 22 comprises a reversible in its rotational direction electric drive motor 23, a drivable by this drive spindle 24 and a seated on the drive spindle 24 spindle nut 25. The spindle nut 25 is formed integrally with a guide block 26. At the guide block 26 is the common pivot point 11 of the stay arm 6 and the further scissor arm. 7

A guide device 27 for the extension arm 6 comprises, as guide elements, a guide track in the form of a guide slot 28 on the extension arm 6 and a track follower 29 formed as a track follower on the further scissor arm 7. The guide slot 28 comprises two track or slot sections 30, 31, which directly into each other go over and run at an angle to each other. The slot portion 30 extends parallel to the axis of the drive spindle 24 and thus also parallel to the main plane of the window 1 and the fixed frame 2. The slot portion 31 is inclined at an angle to the slot portion 30.

Furthermore, an additional locking device 32 is integrated in the Ausstellschere 4. This comprises a latch hook 33 on the further scissor arm 7 and as a movable additional locking element an additional locking pin 34 which is fixedly connected to the stay 6. At its opening side of the latch hook 33 is provided with an inlet slope 35 ( Fig. 3 ).

In closed and locked state ( Fig. 2 ) is the wing 3 in the usual way with a wing flap on the fixed frame 2. The folding surfaces of the wing 3 are opposed folding surfaces of the fixed frame 2. The drive rod 15 is moved in the circumferential direction of the wing 3 in a position in which the provided on the drive rod 15 locking pin 19 engage behind the associated fixed frame-side striker 20. As a result, the wing 3 is locked to the fixed frame 2 against an opening movement about the wing rotation axis 5.

The Ausstellschere 4 is located in the in the FIGS. 2 and 3a shown functional state. The Ausstellschere 4 is closed, the extension arm 6 and the further scissor arm 7 are accordingly parallel to each other. The additional locking device 32 provided between the extension arm 6 and the further scissor arm 7 is effective. Accordingly, the additional bolt pin 34 engages the stay arm 6 in the latch hook 33 on the further scissor arm 7 a. On the guide means 27 is mounted on the further scissor arm 7 guide pin 29 in the slot portion 30 of the guide slot 28 on the extension arm 6. The spindle nut 25 of the spindle drive 22 is moved together with the guide block 26 in the right end position in the figures. The electric drive motor 23 is turned off.

If the closed wing 3 are to be completely opened, then the electric drive motor 23 is to be switched on and the drive spindle 24 to be operated with a direction of rotation, in which it is located on the drive spindle 24 seated spindle nut 25 together with the freely enforceable by the drive spindle 24 guide block 26 from the right end position according to Fig. 3a moved to the left. About the joint pivot point 11 on the guide block 26 of this takes the stay arm 6 with a translational movement. As a result, the guide pin 29 fixedly connected to the further scissor arm 7 shifts to the right in the guide slot 28 of the extension arm 6. Due to the interaction of guide pin 29 and slot portion 30 results in a first translational movement of the extension arm 6 relative to the other scissor arm. 7

The additional locking pin 34 on the extension arm 6 moves relative to the locking hook 33 on the further scissor arm 7 to the left. Also in the illustrations to the left of the wing frame 9 is taken from the stay 6. About the Flügelbock 9 moves the stay arm 6, the drive rod 15 to the wing 3 rectified. As a result, the locking pins 19 move on the drive rod 15 to the respective associated striker 20 to the opening side.

As soon as in the course of the translational unlocking movement of the stay 6, the conditions according to Fig. 3b shown, the locking pins 19 are released on the wing 3 of the fixed frame side strikers 20. The additional locking pin 34 of the auxiliary locking device 32 has left the locking hook 33. The guide pin 29 of the guide device 27 for the extension arm 6 has reached the transition between the slot section 30 and the slot section 31 in the guide slot 28. Although the wing 3 is still closed, but now unlocked from the fixed frame 2.

If the spindle nut 25 with the guide block 26 and the common articulation point 11 of the extension arm 6 and the further scissor arm 7 further moved in the figures to the left, the guide pin 29 arrives at the further scissor arm 7 in the slot portion 31 of the guide slot 28 on the Ausstellarm 6. As a result, the extension arm 6 performs a drive pivotal movement in the opening direction. Of the extension arm 6 of the unlocked wing 3 is taken and driven accordingly with an opening movement. A in the course of the drive pivotal movement of the extension arm 6 and the associated opening movement of the wing 3 resulting intermediate position of the stay 6 is in Fig. 3c shown. In this functional state of the Ausstellschere 4, the further scissor arm 7 is still in its initial position parallel to the fixed frame. 2

If the spindle drive 22 continues to be operated in the opening direction, then the guide pin 29 moves on the further scissor arm 7 on the basis of the conditions according to FIG Fig. 3c back into the slot portion 30 of the guide slot 28 on the extension arm 6. The guide pin 29 moves towards the closed end of the slot portion 30 back. With appropriate movement of the extension arm 6 and pivotal movement of the other scissor arm 7 relative to the fixed frame 2, the Ausstellschere 4 opens beyond an opening angle of 90 degrees, until finally the functional state according to the FIGS. 1 and 3d results. The spindle nut 25 and the guide block 26 with the common pivot point 11 of the extension arm 6 and the further scissor arm 7 are now in their left end position. The Ausstellschere 4 and hinged to the extension arm 6 of the stay-4 wings 3 are open to the maximum.

When closing the wing 3, the processes described above result in the reverse order. Finally, the stay 6 is based on conditions according to Fig. 3b moved translationally to the right by the spindle drive 22 with a locking movement. The extension arm 6 takes on the wing frame 9 and associated with this drive rod 15 with a rectified movement. As a result, the wing-side locking pins 19 come into rear grip with the fixed-frame-side locking pieces 20. At the additional locking device 32, the auxiliary locking pin 34 runs into the locking hook 33. If the additional locking pin 34 is initially offset in height relative to the receptacle of the locking hook 33, then the inlet bevel 35 on the locking hook 33 ensures that the auxiliary locking pin 34 securely enters the locking hook 33. Associated with this is a movement of the extension bar 6 provided with the auxiliary locking pin 34 against the further scissor arm 7 and, as a result, a pressing of the extension arm 6 attached to the wing 3 to the fixed frame 2.

According to the FIGS. 4 to 7 the Ausstellschere 4 is used on a window for installation in inclined surfaces, in detail on a canopy window 40. The Ausstellschere 4 is provided between a fixed frame 42 and a wing 43. Notwithstanding the Fester 1 according to the FIGS. 1 to 3d the wing 43 of the residential roof window 40 can be converted into a so-called "cleaning position". In the cleaning position, the wing 43 in the FIGS. 5 and 7 shown. The wing outside is facing the interior of the room in this case and thus accessible for cleaning.

In the cleaning position according to Fig. 5 the wing 43 is starting from its open position according to Fig. 4 emotional. In the cleaning position according to Fig. 7 is the wing 43 starting from its in Fig. 6 shown closed position transferred.

In both cases, the wing 43 is initially closed and locked to the fixed frame 42. By pressing the spindle drive 22 in the above to the FIGS. 3a and 3b described manner, the wing 43 is first unlocked. Subsequently, the wing 43 can be rotatably opened either by further actuation of the spindle drive 22 (see. FIGS. 3c, 3d ) or remain closed but unlocked.

Both in the open position and in the closed position, the wing 43 is first secured by means of a locking device 44 against unwanted movement into the cleaning position. Part of the locking device 44 is a handle 45, by means of which the wing 43 can be released for pivotal movement about a pivot axis 46.

So that the wing 43 can be transferred into the cleaning position, it must be released after the release for a pivoting movement about the pivot axis 46 of the stay 6 of the stay 4. For this purpose, the stay arm 6 is provided with a sash bracket 49, which instead of the sash bracket 9 according to the FIGS. 1 to 3d is provided, releasably connected. Preferred dimensions, the detachable connection between the extension arm 6 and the sash bracket 49 is designed as a latching connection. To release this locking connection, the wing 43 after releasing the locking device 44 by hand about the pivot axis 46 in the cleaning position according to Fig. 5 or in the cleaning position according to Fig. 7 to pan.

Claims (10)

1. Window, door or the like having a fixed frame (2) and having a wing (3) which by means of a locking device (21) is lockable to and/or unlockable from the fixed frame (2) and which, in the unlocked state, is movable by means of a wing drive relative to the fixed frame (2) with an opening movement or with a closing movement,

   ● wherein the wing drive comprises an opening arm (6) which is pivotally linked at the wing side and at the frame side to a respective linkage point (8, 11) to form a driving pivot axis (10, 12) in each case and which, as a scissor arm, forms with a further scissor arm (7) a two-armed opening scissor arrangement (4) provided between the wing (3) and the fixed frame (2),

   ● wherein the opening arm (6) and the further scissor arm (7) are drivable with a driving pivoting movement and, upon a driving pivoting movement, drive the wing (3) with an opening movement or with a closing movement

   ● wherein one of the linkage points (8, 11) of the opening arm (8) forms a common linkage point (11) at which the opening arm (6) and the further scissor arm (7) are linked to each other,

   ● wherein the opening arm (6) is connected at its other linkage point (8), at a distance from the common linkage point (11), to a movable locking element (15) of the locking device (21), which locking element (15) is provided on the wing side or on the fixed frame side,

   ● wherein the further scissor arm (7) has, at a distance from the common linkage point (11), a further linkage point (13), and

   ● wherein the movable locking element (15) is movable, as a result of a locking movement of the opening arm (6), into a locking position, in which the wing (3) is locked to prevent an opening movement, or is movable, as a result of an unlocking movement of the opening arm (6), into an unlocking position, in which the wing (3) is released for an opening movement,

   characterised in that
   there is disposed on the further scissor arm (7) a motor-driven driving device (22) for the opening arm (6), by means of which the opening arm (6) is drivable, when the wing (3) is closed, with a locking movement or with an unlocking movement, taking with it the movable locking element (15), and by means of which, in addition, the opening arm (6) and the further scissor arm (7) which is provided with the motor-driven driving device (22) are drivable with a driving pivoting movement.
2. Window, door or the like according to claim 1, characterised in that a driving rod which is guided in the peripheral direction on the wing (3) or on the fixed frame (2) is provided as the movable locking element (15).
3. Window, door or the like according to either of the preceding claims, characterised in that there is provided for the opening arm (6) a guide device (27) by means of which the opening arm (6) is guided during the locking movement and/or the unlocking movement and also during the driving pivoting movement.
4. Window, door or the like according to claim 3, characterised in that the guide device (27) for the opening arm (6) comprises a guideway (28) and a guideway follower (29).
5. Window, door or the like according to claim 3 or claim 4, characterised in that the common linkage point (11) is drivable with a translatory movement during the locking movement and/or during the unlocking movement and also during the driving pivoting movement of the opening arm (6), and by means of the guide device (27) of the opening arm (6) the translatory movement of the linkage point (11) may be converted into a driving pivoting movement of the opening arm (6).
6. Window, door or the like according to any one of claims 3 to 5, characterised in that the guide device (27) for the opening arm (6) includes guide elements provided on the one hand on the opening arm (6) and on the other hand on the further scissor arm (7).
7. Window, door or the like according to any one of the preceding claims, characterised in that the opening arm (6) is pivotally linked to a linkage point (8) that is releasably connected to the movable locking element (15).
8. Window according to any one of the preceding claims in the form of a window for installation in inclined surfaces, preferably in the form of a roof window, characterised in that the window has a wing (43) which may be pivoted with a pivoting movement into a cleaning position and which is arrestable by means of a releasable arresting device (44) to prevent pivoting into the cleaning position, and the opening arm (6) of the wing drive is drivable uncoupled from the arresting device (44) with a locking movement and/or with an unlocking movement.
9. Window, door or the like according to any one of the preceding claims, characterised in that an additional locking device (32) is provided by means of which the opening arm (6) may be secured to the further scissor arm (7) and/or by means of which the opening arm (6) may be released from the further scissor arm (7) and which includes a movable additional locking element (34) which is provided on the opening arm (6) and which is movable by a locking movement of the opening arm (6) into a locking position and by an unlocking movement of the opening arm (6) into an unlocking position, the opening arm (6) being secured to the further scissor arm (7) to prevent a driving pivoting movement in the locking position of the movable additional locking element (34) and being released from the further scissor arm (7) for a driving pivoting movement in the unlocking position of the movable additional locking element (34).
10. Two-armed opening scissor arrangement to be disposed between a wing (3) and a fixed frame (2) of a window, door or the like,

    • wherein the two-armed opening scissor arrangement is formed by an opening arm and a further scissor arm (7),

    • wherein the opening arm (6) and the further scissor arm (7) are drivable with a driving pivoting movement and the wing (3) is drivable with an opening movement or with a closing movement upon a driving pivoting movement of the opening arm (6) and the further scissor arm (7),

    • wherein the opening arm (6) is pivotally linkable at the wing side and at the frame side to a respective linkage point (8, 11) to form a driving pivot axis (10, 12) in each case,

    • wherein one of the linkage points (8, 11) of the opening arm (6) forms a common linkage point (11) at which the opening arm (6) and the further scissor arm (7) are linked to each other,

    • wherein the opening arm (6) is connectable at its other linkage point (8), at a distance from the common linkage point (11), to a movable locking element (15) of a locking device (21),

    • wherein the further scissor arm (7) has, at a distance from the common linkage point (11), a further linkage point (13), and

    • wherein the opening arm (6) is movable with a locking movement or with an unlocking movement and

    • wherein the movable locking element (15) is movable, as a result of a locking movement of the opening arm (6), into a locking position, or is movable, as a result of an unlocking movement of the opening arm (6), into an unlocking position, and the wing (3) is locked to prevent an opening movement when the locking element (15) is in the locking position and is released for an opening movement when the movable locking element (15) is in the unlocking position,

    characterised in that
    there is disposed on the further scissor arm (7) a motor-driven driving device (22) for the opening arm (6), by means of which the opening arm (6) is drivable, when the wing (3) is closed, with a locking movement or with an unlocking movement, taking with it the movable locking element (15), and by means of which, in addition, the opening arm (6) and the further scissor arm (7) which is provided with the motor-driven driving device (22) are drivable with a driving pivoting movement.

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