EP2105557B1 - Device for preventing incorrect operation for parallel set tilting/sliding doors and windows - Google Patents

Abstract

The faulty operation blocker (1) has a central lock (4) that is attached at a wing frame (2). The central lock is moved between functional positions, where it is locked in a position and is unlocked in tilting manner in another position. A bolt (5) is arranged at the central lock and a locking element (6) is arranged around a rotating axis (8) at the wing frame in swiveling manner. An independent claim is included for a method for protecting movement of a stoppable wing with a central lock.

Description

The invention relates to a mishandling device for the wing of a parallel tilt sliding door or a parallel tilt sliding window. This as a working method or device.

A fitting system generally has an operating lever on the sash frame, which can be positioned differently and thereby displaces displaceably mounted drive rods in corresponding positions in the sash rebate space. Such a fitting system is generally referred to as a "center lock". The positions are assigned to certain functions of the fitting system, such as the locking of the wing in its closed position, the transfer of the wing in its tilted position or the release of the locking of the lower end of the wing, so that it can be transferred to the parallel parking position and moved laterally.

The different positions of the fitting are named after their function. In the first functional position of the wing is closed and locked with the associated fixed frame (frame) in the closed position. In the second functional position of the wing is tilted relative to the frame unlocked. Finally, in the third functional position, the wing is unlocked relative to the frame so that it can be transferred from the tilted position into a parallel position and can then be displaced laterally.

In order to avoid that the drive rods can be moved over the operating lever with wings in the parallel set - off position, was in the DE 20 2005 13 426 U1 (GU) and the DE 20 2005 13 427 U1 (GU) proposed a mishandling device having a pivotally mounted in a housing at the lower spar of the sash frame locking member which engages in the sliding position of the wing in a recess of an underlying drive rod and locks it against displacement. The locking member is biased by a leaf spring in the direction of its blocking position. A release mechanism provides in response to the movement of the lower wing end relative to the frame (the fixed frame) that when you move this end of the frame, the locking member can swing out and is swung back when pressed against the frame. This locking device is quite complicated in construction and correspondingly expensive to manufacture and has only a backup function.

There are further known safety devices for a fitting system of parallel tiltable tilt sliding doors, which have a pivotable at the lower end of a wing pivot lever which is pivotally arranged at its end about its upper end, and a pivot lever on the frame opposite stop member. The pivot lever has a longitudinal slot extending along its guide slot with a lateral recess. In the slot with a drive rod of a central shutter driven connectable bolt is arranged. The pivot lever is pivotable from a position releasing the bolt in the slot into a position locking the bolt in the lateral recess of the slot by cooperation with the stop element arranged on the window frame. This safety device requires for a secure locking of the bolt in the lateral recess a correspondingly wide pivoting of the pivot lever.

Compared to the prior art described above, it is the object of the invention to propose an erroneous operating lock, which is simpler in construction, safer in function and also cheaper to produce. The same applies to a working procedure.

This object is achieved by a mishandling device for the wing of a parallel tilt sliding window or a parallel tilt sliding door , on the casement a central closure is arranged between a first functional position in which the wing is closed and locked, a second functional position in which Wing is tilted unlocked, and a third functional position in which the wing is transferred from the tilted position into the parallel position, is displaceable, to be arranged on the central lock bolt and a pivotable about an axis of rotation on the casement locking element, the one between a movement of the bolt together with the central locking blocking first blocking position and a bolt releasing the second release position is movable to abut while tilted and closed sash to a frame while taking the release position and at in the Pa rallelstellung located sash to be solved by the frame and occupy the locking position, wherein the locking element is designed as a two-armed lever, the lever arms are arranged on opposite sides of the axis of rotation.

The invention is particularly applicable with conventional fitting systems for parallel tilt sliding sash. Such a system has on the top frame on a sliding guide for sliding elements, on each of which a Ausstellschere is articulated for connection to the upper end of the wing. At the bottom of the frame, it has a running rail for carriages, which is connected in each case via a stay arm with the lower end of the wing. Ausstellschere (s) and Ausstellarm (e) lead the wing in its movement, it is preferred that it is controlled by these arms / shears.

The fitting system is operated by means of a control or operating lever, which generally has three selected positions: in one position (first functional position), it holds the wing closed and locked via the fitting system; in the movement to the next position (second functional position), the unlocking of the upper wing end and the preferred forced pivoting takes place in the tilted position, wherein the lower wing end is held by snaps or snaps or the like. Still in the rebate area; the latter are moved in the pivoting of the lever in its next position (third functional position), so that now moves the wing in the parallel parking position and can be moved laterally.

The mishandling device is preferably mounted in the lower vertical rebate of the sash. It is oriented in such a way that the locking element rests directly or indirectly on the window frame when the wing is fully closed and tilted. Due to the contact between the frame and locking element latter is held in the release position. In this, the bolt (as a realization of a projection) and thus the central lock without restriction between the individual functional positions displaced. The locking element has a Ausschwenkwinkel of a lever arm to the longitudinal extent of the central closure.

If the central closure via the operating lever or another drive in the third operating position and the sash in the parallel sliding position (shutdown) brought in which it is laterally displaceable, the contact between the frame and locking element ends, so that the locking element from the release position into a the bolt (as a projection) of the central lock locking position (blocking position) moves. When moving from the release position to the blocking position and vice versa, the locking element performs a pivoting movement about the stationary relative to the wing frame axis of rotation.

This axis of rotation is preferably transverse to the direction of movement of the central closure and located in the outline of the wing (in the "wing level"). In this way, a pivoting of a lever arm of the locking element in the movement path of the bolt is effected (claim 14), when the wing is transferred from the tilted position to the parallel position and thereby pivots the locking element as a two-armed lever about the axis of rotation.

The first lever arm of the locking element, preferably the lower, is used for contacting the window frame, while the second lever arm, preferably the upper, the release or blocking of the bolt of the central closure - depending on the position - causes. The blockage is a blockade of a (further) longitudinal movement of the projection after, for example, below, so as to act on one side limiting and leaving the other direction free.

The second lever arm is preferably formed at the end as a stop, which comes to lie in a pivoting of the locking element about the rotational axis in the blocking position in the movement path of the bolt when at least a portion of the stop is in the path of movement. The stopper and thus the locking element is preferably designed such that it pivots in its trajectory in the movement path in the third functional position and thus prevents the bolt from the position corresponding to the third functional position into the positions corresponding to the first or second functional position (FIG. back) can be moved.

Due to the design of the locking element as a two-armed lever, the bolt can already be safely locked or released by its slight pivoting. The mishandling lock requires in comparison to known from the prior art mishandling devices a small amount of space, so their use is subject to few restrictions. The locking element itself has a simple shape, which is why it is inexpensive and easy to manufacture, for example as a punched or cast element.

It is particularly advantageous that the sensitivity of the incorrect operation lock can be adjusted individually by the corresponding configuration of the ratio of the lever arms of the locking element with otherwise identical construction. So can be determined by the selection of the lever ratio, whether a blocking of the bolt already occurs with a small swinging out of the wing arm or only after another swinging.

Another advantage is that the mounting position of the mishandling device and its pivoting depending on the opening state of the wing must be less accurately matched to the position of the central shutter when opening and closing the wing than this in the prior art - where the bolt in a specially for provided recess, which must be positioned relative to the pin correctly engages - is required. It is sufficient if it is prevented by means of the locking element and the bolt to be arranged on the central lock that the central lock from the third functional position (parallel adjustable wings) in the first or second functional position (tilted or fully locked wing) can be brought. Unlike the prior art, it is not absolutely necessary that the central closure is completely fixed (in the third functional position). As a result, production, installation and adjustment of the mishandling device are significantly simplified. Another advantage is that even with any occurring wear of the central lock, bolt or locking element the mishandling lock remains functional, since the locking element can be completely pivoted into the path of movement of the bolt due to its geometry and kinematics. Furthermore, malfunctions of the incorrect operation lock due to a possible incorrect positioning of the central closure can be reliably prevented.

According to a particular embodiment, the locking element is preferably by means of a spring, e.g. a coil spring, coil spring, leg spring or the like, biased in the blocking position. This ensures that the locking element automatically begins to move into its blocking position as soon as the distance from the sash to the frame forms or increases in the area of the mishandling device. From this pivotal position, the blocking position - is limited with the one-sided - also dependent (claim 15).

Advantageously, the locking element has a recess, in particular in the form of a guide slot or a guide groove. This (r) can be designed as a blind slot / blind groove or as a continuous slot / groove. A trajectory for the bolt is formed, wherein the guide slot / groove is in coincident with the movement path of the bolt on the central closure in befindlichem in the release position locking element. The guide slot or a recess delimiting surface or edge of the locking element preferably extends substantially radially to the axis of rotation.

According to a further embodiment, the locking element must only come to rest indirectly on the frame. At this, a stop element may be arranged, which cooperates with the locking element and holds it in the closed position in the closed or tilted wing in the release position. Through a selection of stop elements of different dimensions, the mishandling device can be individually adapted to different gap dimensions between sash and frame.

The arranged on the wing frame stop element can fulfill other functions in addition to the positioning of the locking element. The stop element can form together with the locking element a lifting protection, due to the effect of the wing in the tilted position can not be accidentally lifted from a guide. For this purpose, the locking element preferably has a recess which has a surface which preferably contacts the abutment element in the tilted position. It is also sufficient if the said surface does not contact the stop element, but is arranged at a small distance from it, so that lifting of the wing can be prevented.

Another function of the stop element may be to form a bearing together with the locking element, which receives at least a portion of the weight of the located in the tilted or closed position wing. For this purpose, the stop element and the locking element contact areas, for example in the form of a surface of a recess of the locking element, which come into contact with the pivoting position in the release position in its pivoting, whereupon the wing is slightly raised. In this way, rollers belonging to the fitting system of the tilt slide wing carriage can be relieved, whereby their deformation is prevented by the sash weight.

In a particularly easy to install embodiment, the locking element by means of a pivot axis forming pin about these pivotable on the sash can be arranged. The pin can be arranged directly on the sash or on this stationary functional parts of the central closure, for example on a cover strip. It can in particular in the assembly of a parallel-tilt sliding wing, a central closure or a mishandling device according to the invention on the casement or a functional part of the Central locking be pre-assembled, which facilitates the installation and adjustment of the mishandling device. Alternatively, the pin may be directly integrally formed on a cover strip or the like, if necessary. Preferably, it is provided with an internal thread, in which a corresponding fastening screw for pivotally mounting the locking element can be screwed.

Preferably, a bearing element is arranged between the pin and the locking element. This can form two, the movement of the locking element about the axis of rotation limiting stops. By using bearing elements of different geometry, there is the advantageous possibility of adjusting the pivoting angle of the locking element to the respective present between the sash and window frame gap geometry, so that always a perfect function of the mishandling device can be guaranteed. Preferably, the movement of the locking element limiting stops (engagement parts) are formed by an engaging in a recess of the locking element cam of the bearing element. Conversely, the bearing element, the recess and the locking element have the cam. The bearing element can be arranged on the pin and in turn carry the locking element. Alternatively, the locking element can be arranged on the journal and in turn carry the bearing element.

To pivot the bearing element about the axis of rotation - i. to avoid the pin -, it has, according to a further proposal of the invention, a projection, cam or the like., Which engages in a corresponding recess of the sash, the central closure or a cover strip of the central closure. This in turn benefits the ease of installation, since the bearing element only has to be assembled with the pin or the locking element and is fixed against rotation in the intended arrangement of these elements on the sash by the engagement of the projection or cam in the aforementioned recess, without the need for separate assembly steps required are.

More particularly, the invention relates to a mishandling device for a deployable wing, with a central closure, wherein the central closure has at least one longitudinally movable drive rod and thus longitudinally displaceable between a first functional position, a second functional position and a third functional position, and one with the central closure slidable projection, in particular as a bolt, and a pivotable about an axis of rotation locking element, wherein the locking element is designed as a two-armed lever, wherein the two-armed lever between a longitudinal movement of the projection on one side limiting locking position and the longitudinal movement releasing release position is pivotally, wherein the limitation of the longitudinal movement of the projection not only from its relative position to two-armed lever depends. In this case, the entry of the limitation of the longitudinal movement can also depend on a pivot angle of the two-armed lever with respect to a longitudinal direction of the longitudinal movement of the projection. Furthermore, in this the two-armed lever can be resiliently biased in the limiting blocking position. A pin can form the axis of rotation for the two-armed lever, in particular the pin can not move relative to the central closure.

In the embodiments described in the preceding paragraph may be formed on the two-armed lever - preferably at the end of the longer lever arm - a transverse stop to bring this stop in the blocking position at least partially in a path of movement of the longitudinal movement of the projection. Furthermore, the two-armed lever on one of the lever arms may have a guide groove which, in the release position of the lever, forms a movement path for unimpeded longitudinal movement of the projection. In this case, the groove may be formed extending radially away from the axis of rotation.

In the embodiments described in the two preceding paragraphs, the mishandling device can be arranged with a bearing element for the two-armed lever, adapted to the end, on the casement or an immovable portion of the central closure. In this case, the bearing element and the two-armed lever may comprise engagement parts which define a circumferential restriction of a possible pivoting angle of the lever.

In the embodiments described in the three preceding paragraphs, the mishandling device may have an attachable to the window frame in the rebate stop member which cooperates in the tilted position with the shorter arm of the two-armed lever to at least complicate a lifting. In this case, the stop element engage in a recess of the shorter arm of the two-armed lever and this intervention become weaker, when the "tiltable unlocked position" is left in the direction of the "parallel shutdown". In this case, the recess has a first surface and a portion of the stop element and the first surface of the recess can be - at least forming a part of the weight of the casement on the frame transferring - support bearing. The recess may have a second surface on which a portion of the stop element crosses the system to form a bearing that makes it difficult at least a lifting of the sash.

Figur 1a

eine schematische Ansicht eines Parallel-Kippschiebefensters nebst Blendrahmen mit Fehlbedienungssperre,

Figur 1b

eine Ansicht des unteren linken Eckbereichs des Flügels der Figur 1a,

Figur 2a

eine schematische Seitenansicht der Fehlbedienungssperre der Figur 1,

Figur 2b

eine Schnittansicht der Fehlbedienungssperre entlang der Linie II-II der Figur 2a, wobei sich die Fehlbedienungssperre in der Freigabestellung befindet,

Figur 2c

eine Schnittansicht der Fehlbedienungssperre entlang der Linie II-II der Figur 2a, wobei sich die Fehlbedienungssperre in der Sperrstellung befindet,

Figur 3

die Fehlbedienungssperre der Figuren 1 und 2 a, b und c in einer Explosionsdarstellung,

Figur 4

die Fehlbedienungssperre der Figuren 1 bis 3 mit Bedienungselement bei geschlossenem Fenster,

Figur 5

die Fehlbedienungssperre der Figuren 1 bis 4 mit Bedienungselement bei gekipptem Fenster,

Figur 6

die Fehlbedienungssperre der Figuren 1 bis 5 mit Bedienungselement bei gekipptem Fenster mit entriegeltem Zentralverschluss bereit zum Ausschwenken in die Parallelstellung und

Figur 7

die Fehlbedienungssperre der Figuren 1 bis 6 mit Bedienungselement bei parallel ausgestelltem Fenster.

Further features and advantages of the invention will become apparent from the following exemplary description of particularly preferred embodiments with reference to FIGS. Showing:

FIG. 1a

a schematic view of a parallel tilt sliding window and frame with mishandling device,

FIG. 1b

a view of the lower left corner of the wing of the wing FIG. 1a .

FIG. 2a

a schematic side view of the mishandling device FIG. 1 .

FIG. 2b

a sectional view of the mishandling device along the line II-II of FIG. 2a , wherein the mishandling device is in the release position,

Figure 2c

a sectional view of the mishandling device along the line II-II of FIG. 2a , wherein the mishandling device is in the locked position,

FIG. 3

the mishandling lock the FIGS. 1 and 2 a, b and c in an exploded view,

FIG. 4

the mishandling lock the FIGS. 1 to 3 with control element with closed window,

FIG. 5

the mishandling lock the FIGS. 1 to 4 with control element with tilted window,

FIG. 6

the mishandling lock the FIGS. 1 to 5 with control element with tilted window with unlocked central lock ready for swinging in the parallel position and

FIG. 7

the mishandling lock the FIGS. 1 to 6 with control element with parallel raised window.

The mishandling lock 1 can be used in conventional parallel tilt sliding doors and windows. An exemplary window unit 21 is shown in FIG FIG. 1a shown. It consists of a non-opening fixed wing 22 and a tiltable and parallel to the fixed wing 22 slidable wings 23rd FIG. 1b shows in an enlarged perspective view in the FIG. 1a by means of a dashed rectangle marked lower left corner of the wing 23rd

The wing 23 has a sash 2 which is arranged to be movable relative to a normally not openable frame 3. The frame 3 may also be part of the fixed wing 22. The arrangement is made with a conventional fitting system, which is only partially explained in the context of the present description. It has a central closure 4, which is arranged displaceably in the longitudinal direction (arrow A) in the region of the fold of the casement 2. In the illustrated embodiment, the central closure 4 is arranged behind a stationary on the casement and provided with corresponding penetrations cover rail 24. Longitudinal movements are mediated by drive or actuation rails.

The mishandling device 1 is on the sash 2 with a in the FIG. 3 recognizable pin 17 is arranged. This is fixed relative to the covering rail 24 at this immovable. The central axis of the pin 17 is arranged transversely to the direction of movement A of the central closure 4 and in the wing plane of the wing 23 and forms the axis of rotation 8 of the mishandling device 1 from.

On the pin 17, a locking element 6 is arranged. This has for this purpose a bearing sleeve 25 which is provided with a non-recognizable in the figures passage opening. Between the locking element 6 and the pin 17, a bearing element 9 is arranged, which is biased by means of a coil spring 7 relative to the locking element 6, in the blocking position. The bearing element 9 has a in the FIG. 3 unrecognizable central recess with which it sits on the outer circumference of the bearing sleeve 25 of the locking element 6. Furthermore, the bearing element 9 has a nose 26 which is provided on the side opposite the locking element 6 side of the bearing element 9. The nose 26 engages in a not visible in the figures recess of the cover rail 24 so that the relative position of the bearing element 9 to the sash 2 by the pin 17, the bearing sleeve 25 and the nose 26 is clearly defined, such that the bearing element 9 relative immovable to the sash 2 and in particular is not pivotable.

On its side facing the locking element 6, the bearing element 9 has a projection 27, which engages in a corresponding recess 28 of the locking element 6. The coil spring 7 is also disposed in the recess 28 at the end of the projection 27, so that it causes the bias of the locking element 6 in its blocking position (in the FIGS. 2b and 2c a turn in a clockwise direction).

On the projection 27 of the bearing element 9, a cam 11 is provided, which is arranged in a pocket 10 of the recess 28. The pocket 10 has over the cam 11 an excess, so pocket 10 and cam 11 form two stops 19,20, which restrict pivoting of the locking element 6 about the axis of rotation 8 when this reaches the release or the locked position.

At the opposite the cover rail 24 displaceable central closure 4, a bolt 5 is arranged, which protrudes through a corresponding recess 29 of the cover rail 24 in the rebate space. The bolt 5 is moved on actuation of the handle 30 as a control element, which leads to a displacement of the central closure 4 in the direction of arrow A, along with this.

The locking element 6 is formed as a two-armed lever with an upper lever arm 15 and a lower lever arm 16 pivotable about the axis of rotation 8. At the upper lever arm 15, the locking element 6 has a guide slot 18 which is in befindlichem in the release position locking element - this is in FIG. 2b shown - a recording of the bolt 5 is used. The upper end of the upper lever arm 15 is formed as a stop 14 for the bolt 5, which will be described in more detail later.

At the lower lever arm 16 of the locking element 6, a recess 13 with an upper contact surface 31 and a lower abutment surface 32 is formed. The mishandling device 1 shown by way of example in the figures further comprises a stop element 12, which is arranged in the region of the recess 13 on the frame 3 (see FIG. 1 b) ,

The function of the mishandling device 1 results in particular from the FIGS. 4 to 7 , FIG. 4 shows the position of casement 2 and frame 3 to each other in a schematic side view. The wing or casement 2 is in the closed position and is thereby opposite to the central closure 4 Frame 3 (releasably) locked. In this case, the handle 30 is in the in FIG. 4 centrally shown, lower position. The bolt 5 connected to the central closure 4 is in its lower end or dead position, which corresponds to the first functional position. He lies in the lower part of the guide groove 18 of the locking element 6. This is located in the in FIG. 2b shown release position, ie the radially extending to the axis of rotation 8 guide groove 18 is congruent with the movement path of the bolt 5, on which this will move during a movement of the central closure 4.

The locking element 6 contacted with its lower lever arm 16, the stop element 12. By this contact, it is urged against the bias of the coil spring 7 in the bolt 5 releasing position.

FIG. 5 shows another state in which the handle 30 has been rotated counterclockwise by 90 °. In this position (second functional position) of the sash 2 is connected via the central closure 4 and not shown fitting units in such a way with the frame 3, that he in the left in FIG. 5 shown tilting position can be brought. Opposite in the FIG. 4 shown position of the central closure 4 and thus also the pin 5 is shifted so far up that he has stepped out of the guide groove 18 of the locking element 6. Since the casement 2 continues to bear on the frame 3 in its lower region, the lower lever arm 16 of the locking element 6 also contacts the stop element 12, which is why the locking element 6 is still in the release position.

To the wing 23 with the sash 2 relative to the frame 3 and the fixed wing 22 in a displacement enabling parallel position (see FIG. 7 To bring, the handle 3 must continue to be pivoted counterclockwise until he in the FIG. 6 has reached shown position. In this position, the central closure 4 is together with the pin 5 in its upper end or dead position (third functional position). In this, the sash 2 is completely unlocked from the frame 3 and can from the in FIG. 6 tilt position shown in the in FIG. 7 shown Parallelabstellung be brought.

When the casement 2 is pivoted away from the frame 3, the contact between the lower lever arm 16 and the stopper 12 begins to release. The locking element 6 pivots due to the bias of the coil spring 7 from the release position in the locking position locking the bolt 5 (in Figure 2c shown). If it has reached this blocking position, its maximum pivot angle, preferably below 30 °, executed, and then spaced the shorter lower lever arm in the course of Parallelabstellens of the stop element 12. The stop 14 is still entirely in the path of movement of the bolt. 5

The pivoting of the lever 15, 16 is limited by an abutment of the cam 11 on the inner stop 20. By located in the locked position locking element 6, the handle 30 can only be swung back to its pivoted by 90 ° position. At the latest when this Schwenklage after FIG. 7 is reached, the pin 5 comes to the outer stop 14 of the locking element 6 to the plant, whereby further actuation of the handle in the direction of FIG. 4 shown blocking position is prevented. Here occurs the one-sided limiting effect.

From the in FIG. 7 shown, parallel parked position for a locking of the window this first again in the from the Figures 5 and 6 apparent tilting position are brought, in which the locking element 6 is pivoted by contacting the stop member 12 from the locking position to the release position. Upon reaching the tilted position, it has automatically assumed the release position in which the stop 14 has been moved completely out of the movement path of the bolt 5 and the guide groove 18 is congruent with the movement path of the bolt 5, which is why the wing 23 can now be completely locked.

The stop element 12 has a projection 33 which engages in a recess 13 of the lower lever arm 16 of the locking element 6. With appropriate coordination of the shape of the projection 33 and the recess 13 with abutment surfaces 31, 32 contact each other such that a lifting protection and / or at least parts of the weight load of the wing 23 receiving support bearing is formed.

To form the bearing, the upper contact surface 31 and the projection 33 are coordinated such that the contact surface 31 upon closing of the wing 23 on the projection 33 of the stop element 12 touches while pivoting the locking element 6 at least a portion of the sash weight on the locking element. 6 and the stopper member 12 transmits directly to the frame 3.

In order to form a lift-out, the lower contact surface 32 is matched to the projection 33 of the stop element 12, so that the contact surface 32 engages under the projection 33 with tilted wing and thereby at least makes it difficult to dig, in particular can be completely prevented.

LIST OF REFERENCE NUMBERS

1.

Tampering device

Second

casement

Third

frame

4th

central locking

5th

bolt

6th

locking element

7th

coil spring

8th.

axis of rotation

9th

bearing element

10th

bag

11th

cam

12th

stop element

13th

recess

14th

attack

15th

lever arm

16th

lever arm

17th

spigot

18th

guide slot

19th

attack

20th

attack

21st

window unit

22nd

fixed wing

23rd

wing

24th

cover rail

25th

bearing sleeve

26th

nose

27th

head Start

28th

recess

29th

recess

30th

Handle

31st

contact surface

32nd

contact surface

33rd

head Start

Claims (13)

1. Device (1) for preventing incorrect operation of a sash (23) of a parallel sliding-tilting window or a parallel sliding-tilting door, wherein a central locking device (4) is arranged on the sash frame (2) of the sash (23), which central locking device (4) is displaceable between a first functional position, in which first functional position said sash (23) is closed and locked, a second functional position, in which a second functional position said sash (23) is unlocked so as to be tiltable, and a third functional position, in which third functional position said sash (23) can be transferred from the tilted position in a parallel displaced position, wherein the device comprises

   - a bolt (5) to be arranged on the central locking device (4) and

   - a locking element (6) to be arranged on the sash frame (2) and to be tiltable around a pivot axis (8),

   - wherein the locking element (6) is movable between a first locking position, in which first locking position movement of said bolt (5) together with said central locking device (4) is locked, and a second releasing position, in which second releasing position said bolt (5) is released, in order to contact a fixed frame (3) and to be in the releasing position when said sash frame (2) is closed, and in order to discontact said fixed frame (3), and to be in the locking position, when said sash frame (2) is in the parallel displaced position,

   characterized in that said locking element (6) is provided in form of a two-armed-lever element and that its lever arms (15,16) are arranged on opposing sites of said pivot axis (8).
2. Device according to claim 1, wherein said locking element (6) is biased into the locking position, preferably by means of a spring element (7).
3. Device according to claim 1 or 2, wherein said locking element (6) is pivotably arranged on said sash frame (2) by a pin (17) forming said pivot axis (8).
4. Device according to one of the preceding claims, wherein a stop (14) is provided on said locking element (6), preferably on the end of said locking element, which stop will be in the path of movement of said bolt (5) when said locking element (6) is in the locking position.
5. Device according to one of the preceding claims, wherein said locking element (6) comprises a recess, in particular a guiding slot (18), which provides a path of movement for said bolt (5) when said locking element is in the releasing position.
6. Device according to claim 5, wherein said recess and said guiding slot (18), respectively, are formed so as to extend in a radial direction from said pivot axis (8).
7. Device according to one of the preceding claims, further comprising a bracket element (9) adapted to be stationary arranged on said sash frame (2).
8. Device according to claim 7, wherein said bracket element (9) comprises a tappet (11) engaging into a recess (10) of said locking element (6), wherein said tappet (11) and said recess (10) form two stops limiting movement of said locking element (6) around said pivot axis (8).
9. Device according to one of the preceding claims, further comprising a stop element (12) arranged on said fixed frame (3), which stop element (12) cooperates with said locking element (6) and prevents lifting of said sash frame (2) when said sash frame (2) is tilted.
10. Device according to claim (9), wherein said stop element (12) engages into a recess (13) of said locking element (6), when said sash frame (2) is closed or tilted.
11. Device according to claim 10, wherein said recess (13) comprises a first surface (31), on which first surface (31) said stop element (12) abuts when said sash frame (2) is closed and/or tilted, such that said stop element (12) and said first surface (31) of recess (13) form a support (22) transforming at least a part of the weight of said sash frame (2) onto said fixed frame (3).
12. Device according to claim 10 or 11, wherein said recess (13) comprises a second surface (32), on which second surface (32) said stop element (12) abuts when said sash frame (2) is closed and/or tilted, such that said stop element (12) and said second surface (32) of recess (13) form a support (24) preventing lifting of said sash frame (2).
13. Method for saveguarding a movement of a retractable sash (23) comprising a central locking device (4), wherein an activation bar of said central locking device is displaceable between a first functional position, a second functional position and a third functional position, comprising a projection in form a bolt (5) displaceable with said central locking device (4) and a locking element (6) pivotable about a pivot axis (8), wherein said locking element is formed as a two arm lever element (15,16),
    wherein said two arm lever element (15,16,6) rotates from a releasing position, in which a longitudinal displacement of said projection is cleared, into a locking position, in which a longitudinal displacement of said projection (5) is locked in one direction, in particular is locked in the downside direction, when said sash is transferred into its parallel displaced position.

Images