EP3443185B1 - Fitting for two at least liftable and slidable sashes of windows or doors - Google Patents

Description

The invention relates to a fitting according to the preamble of claim 1. In particular, the invention relates to a locking device with actuating linkages arranged on two sashes in each case, which have a drive rod which can be moved downwards by means of an actuating handle for lowering the individual sashes.

Due to the dead weight of the sash, the lowering consequently causes the sash to be sealed to the frame.

As a rule, sashes that can be lifted are additionally adjusted after lifting, in particular shifted to one side. In this way, for example, you open a passage opening at a door. In the closed position, the mutually displaceable wings must be sealed. For this purpose, the sashes are equipped with sealing strips or the like which, when the sashes are lowered, bear against corresponding counter-sealing surfaces of the fixed frame and / or the second sash or other sashes. Accordingly, there are such sealing strips not only at the upper and lower ends, but also on the two longitudinal spars. If one of the wings is only raised, the upper and lower seals are released, but not the lateral vertical seals. If this wing is to be lowered again, the friction of the seals counteracts the lowering movement. In the case of a light and high wing, this friction can have the effect that it counteracts the lowering movement in such a way that the wing or, in the case of several, the wings are not or at least not completely lowered. At the end of the lowering movement, the transverse seals would also have to be pressed on.

In order to avoid this condition, the DE 299 20 094 U1 a device has become known which causes a forced lowering of the wing. It essentially consists of a sliding element with a liftable, but preferably also movable wing of a window or a door and with a guide rail. There is an actuating linkage on the wing, which has a drive rod which can be moved downward by means of an actuating member to lower the wing. The fitting has one Locking device, which can be coupled to the actuating linkage and has a drive rod section which can be moved counter to the drive rod of the actuating linkage, a latch being provided on the drive rod section, which engages with a latch engagement in the closed position and abuts against a contact edge of the latch engagement , wherein the bolt engagement is directly assigned to one of the guide rails.

In order to achieve increased protection against burglary while simultaneously forcibly lowering the sash, the exemplary embodiment shows a lowering device in engagement with a latch engagement, which at the same time forms a lock in the direction of displacement. Due to the requirements of locking with a simultaneous forced lowering, additional locking mechanisms are required for this variant of the fitting in order to secure the sash against displacement and to increase the protection against burglary. The known variant, which requires additional structural units, proves to be costly and demanding to assemble due to the large number of components. Furthermore, the design is not suitable for protection against being lifted out or burglarized in the case of a variant of two mutually adjacent wings that can be lifted and displaced.

It is also from the EP 2 860 33 A1 a closure arrangement for closing two sliding leaves has become known, the closure arrangement having a first rear grip element with a first projection and a second rear grip element with a second projection. The rear grip elements can each be moved into an unlocking position and a locking position via actuating devices of the sliding sash. However, when the sliding sashes are closed, that is to say pushed together, the projections only engage behind when both rear grip elements are in the locking position. In order to bring about a forced lowering, in addition to corresponding shift locks, at least one rear grip element must be able to be deflected or displaced by the other rear grip element against the resistance of a restoring element, which are used in windows or doors with lifting-sliding sashes. In this case, a stop is formed by a locking tongue of a locking tongue lock, which has only an articulated connection with the actuating linkage, to which guide curves fixedly attached to the sliding sash are assigned as guide elements, a counter-stop being arranged on the striking plate on the frame side. Securing against unauthorized lifting is not apparent from the known locking arrangement.

WO2015 / 113900 A1 discloses a fitting according to the preamble of claim 1.

The invention has for its object to provide a device for facilitating and supporting the operation of a window or a door from an open storage position of two liftable, preferably mutually movable leaves in the closed position Burglary protection, as well as protection against lifting the first sliding wing to the second sliding wing, which is inexpensive and which can be assembled and adjusted in a simple, fast, safe and precise manner with little installation space, with all possible design variants of two mutually adjacent sliding wings should be covered.

To solve this problem, a fitting of two at least liftable and movable sashes of a window or a door is provided with a running rail, an actuating linkage being provided on the vertical sash inside a fitting groove of a first sash and a second sash, which has a drive rod which for lowering the first wing and second wing by means of an actuating member can be moved downward and transfers the displacement to at least one coupled carriage via a corner deflection.

The fitting has a locking device which is fastened to the actuating linkage within the fitting groove by means of a housing and can be coupled to the actuating linkage via a guide part. The guide part is movable with actuation of the drive rod of the actuating linkage and transfers a pivot bolt, which is controlled on the guide part by a driver guide and is rotatably mounted on the housing of the closure device via a pivot point, from an opening position which is concealed in the housing within the actuating linkage, in the opposite direction to the lowering of the leaf free field of activity of a locking position. A free end of the swivel bolt engages in the transition into the closed position with a pin attached to the second wing and arranged for engaging the bolt engagement. For this purpose, the swivel bolt has a keyway in which a V-rib washer arranged on the pin engages in the closed position, the flanks of a V-rib having a positive operative connection on the flanks of the keyway and exerting a positive operative connection by lifting one leaf against the second leaf without controlling the actuating linkage ,

Accordingly, the exertion of a positive connection is achieved by flanks arranged convexly on the V-rib of the V-rib washer on the flanks of the keyway. The keyway is formed transversely to the direction of rotation of the swivel bolt, starting from an outer surface in the direction of the material of the swivel bolt, as an inwardly narrowing groove which is concave on the outer surface in the rotational direction. If one of the wings or wings is lifted without authorization, the flanks wedge into one another, so that a constraint is created between the components of the swivel bolt and the pin, which makes lifting out of the second wing improperly impossible.

To compensate for possible manufacturing inaccuracies, for example in the manufacture of the window or door, when installing the fitting and for simple design and compliance with a permanent high resistance to burglary, for example by lifting the sash to the frame, the V-ribbed washer in cross section of the outside is widened in the direction of the axis of rotation. The wedge rib of the pin can thus be easily joined by automatically aligning the flanks to the flanks of the respective keyway or keyway of the swivel bolt, in the closed position or in the gap opening position.

In order to create a low frictional resistance of the V-ribbed washer to the pivot, but in turn great resistance of the V-ribbed washer to the swivel bolt during a lifting attempt or improper lifting of a wing, the V-ribbed washer is rotatably mounted on the pivot in two parts or is designed as a one-piece structural unit with the pivot.

A light and stable coupling of the movement apparatus of the closure device to the actuating linkage is achieved in that the guide part, which projects out of the opening of the housing in the direction of the actuating linkage, has a driver which can be positively coupled to a section of the drive rod of the actuating linkage.

The fact that the swivel bolt at the pivot point has projecting pins on both sides, which are rotatably mounted in a bore in the housing, has proven to be a significant simplification of assembly. In addition, the simple manufacture of the hole allows the pivot point of the swivel bolt to be precisely determined, which is advantageous in the transition from the open position to a locking position by pivoting the swivel bolt into the bolt engagement, in that it is unnecessary to readjust the locking device while observing the assembly instructions.

The release of the gap opening position is only achieved via the operating handle with transfer to the actuating linkage. Opening due to unauthorized manual intervention on the locking device cannot be achieved due to the positive engagement of the swivel bolt for bolt engagement.

By reaching through the pivot bolt through the cutout of the bolt plate and engaging the free end of the pivot bolt in a free distance between the pin and the bolt plate, which forms the gap opening position, the V-ribbed disk with the V-rib engages in one arranged on the opposite side of the outer surface facing the frame Outer surface of the keyway of the swivel bolt.

In this case, both splines of the swivel bolt are designed to be adapted in cross section, the spline groove directed towards the frame being offset in the direction of the axis of rotation of the swivel bolt and ending openly at the free end.

A further advantageous embodiment provides that the free end of the pivot bolt is hook-shaped and runs in a radius which presses and holds the sash against the frame when it is moved into the closed position. In addition, the circular shape of the free end means that even if the sash is not lowered independently due to its own weight due to the friction of the sealing strips arranged on the sash to the sash into the closed position, both a contact pressure and a controlled forced lowering to the frame take place.

Furthermore, when a wing is raised against the other wing without actuating the actuating member with the actuating linkage, the non-positive connection is compressed by the wedge action on the flanks of the keyway and the flanks of the V-rib, the friction resistance preferably increasing to protect against lifting out ,

In order to achieve a small-sized housing of the closure device, which has an advantageous effect on the costs of the actuating linkage, the free ends of the swivel bolt are preferably designed in the form of a circular arc or at least in a radius. This has the advantage that the housing can be made narrower and the depth of engagement of the bolt engagement for the swivel bolt can be reduced. Depending on the design of the window or door, it is easy to design cutouts on the sash and / or the frame to accommodate the locking device and the bolt engagement, with little material processing.

An increased protection against burglary and an improved optic is achieved in that the engagement of the pivot bolt with the pin in the closed position and the engagement of the pivot bolt between the pin and the locking plate in the gap opening position are concealed by the locking plate. The concealed arrangement in operative connection of the locking device with the V-ribbed washer and the keyway offer a burglar no approach to a tool. Even with the intended gap opening position, the flush design of the locking plate to the frame and the concealed position of the engagement of the pivot bolt in the locking engagement provide increased protection against burglary.

The latch engagement is advantageously made of a metallic strip material, angled plates running at a right angle to the base plate of the latch engagement. The Plates form a U-shape with respect to the base plate and, through bores arranged at the respective free ends, receive the pin, which is in a non-positive connection with the plates via a non-positive connection, preferably a riveted connection. Due to the one-piece design and the fact that the pin has a roller that is rotatably supported between the plates, the V-ribbed washer and the roller are made in one piece, the latch engagement is high-strength and withstands loads, for example in the event of a break-in.

A smooth and low-noise pivoting of the swivel bolt into the pin arranged on the bolt engagement is also achieved by the roller, which is rotatably mounted between the plates. Furthermore, the outer edges of the swivel bolt are rounded at least in the engagement area of the bolt engagement, the distance between the plates being adapted to the material thickness of the swivel bolt.

It has also proven to be advantageous for the function, assembly and cost of the fitting that the locking device can be mounted on the actuating linkage of the window or door independently of the fitting. Depending on the size and weight of the window or door, the locking device can also be fitted to the actuating linkage several times, regardless of the fitting, in order to increase the pulling force and the burglary resistance if necessary.

• Fig. 1 eine schließseitige Vorderansicht zweier Hebe-Schiebeflügel mit zugehörigem festen Rahmen aus Sicht der Rauminnenseite mit einer Verschlussvorrichtung,
• Fig. 2 eine perspektivische Darstellung der Verschlussvorrichtung eines Riegeleingriffs mit einem Riegelzapfen in einer Verschlusseingriffsposition mit einem Schwenkriegel,
• Fig. 3 eine Vorderansicht im Schnitt der Verschlussvorrichtung in Verschlusseingriffsposition des Schwenkriegels mit dem Riegeleingriff nach Fig. 2, und mit dem Schwenkriegel in beweglicher Formschlussverbindung mit einem Führungsteil und eine dazugehörende Draufsicht mit einem zusätzlich vergrößerten Ausschnitt der Verschlusseingriffsposition des Schwenkriegels mit dem Riegelzapfen,
• Fig. 4 eine perspektivische Darstellung der Verschlussvorrichtung des Riegeleingriffs mit einem Riegelzapfen in einer Verschlusseingriffsposition mit dem Schwenkriegel nach Fig. 2 einem zusätzlich vergrößerten Ausschnitt der Wirkverbindung des Schwenkriegels mit dem Riegelzapfen,
• Fig. 5 eine perspektivische Darstellung der Verschlussvorrichtung mit dem Schwenkriegel in einer mit dem Riegeleingriff und einer Riegelplatte befindlichen Spaltlüftungseingriffsposition,
• Fig. 6 eine Vorderansicht im Schnitt der Verschlussvorrichtung in Spaltlüftungseingriffsposition des Schwenkriegel mit dem Riegeleingriff und einer Riegelplatte nach Fig. 5 und eine dazugehörende Draufsicht,
• Fig. 7 eine perspektivische Darstellung eines ersten Betätigungsgestänges mit der als eine Baueinheit bildenden Verschlussvorrichtung in Eingriff des Schwenkriegels mit einem weiteren Betätigungsgestänge angeordneten Riegeleingriff in Verschlussstellung, nach einem Ausführungsbeispiel der möglichen Ausführungsvarianten eines Fensters oder einer Tür,
• Fig. 8 eine Vorderansicht nach Fig. 7,
• Fig. 9 eine Vorderansicht nach Fig. 8 mit Entfall eines Betätigungsgestänges und
• Fig. 10 eine Auflistung von Ausführungsvarianten, die entsprechend der Ausführungsbeispiele mit der erfindungsgemäßen Verschlussvorrichtung ihren Einsatz finden.

Further advantageous configurations emerge from the drawings. It shows:

• Fig. 1 a front view of two lifting and sliding sashes with associated fixed frame from the inside of the room with a locking device,
• Fig. 2 1 shows a perspective illustration of the locking device of a locking engagement with a locking pin in a locking engagement position with a pivot bolt,
• Fig. 3 a front view in section of the locking device in the locking engagement position of the pivot bolt with the bolt engagement after Fig. 2 , and with the swivel bolt in a movable interlocking connection with a guide part and an associated plan view with an additionally enlarged section of the locking engagement position of the swivel bolt with the bolt pin,
• Fig. 4 a perspective view of the locking device of the bolt engagement with a locking pin in a locking engagement position with the pivot bolt after Fig. 2 an additionally enlarged section of the operative connection of the pivot bolt with the bolt pin,
• Fig. 5 2 shows a perspective illustration of the locking device with the swivel bolt in a gap ventilation engagement position located with the bolt engagement and a locking plate,
• Fig. 6 a front view in section of the closure device in the gap ventilation engagement position of the pivot bolt with the bolt engagement and a locking plate after Fig. 5 and a corresponding top view,
• Fig. 7 2 shows a perspective view of a first actuating linkage with the locking device forming a structural unit in engagement of the pivot bolt with a further actuating linkage arranged locking engagement in the closed position, according to an exemplary embodiment of the possible design variants of a window or a door,
• Fig. 8 a front view after Fig. 7 .
• Fig. 9 a front view after Fig. 8 with elimination of an actuating linkage and
• Fig. 10 a list of design variants which are used in accordance with the exemplary embodiments with the closure device according to the invention.

In a fixed frame 1, a first wing 2 and a second wing 3 can be lifted in the direction of arrow 16 and then displaced relative to one another in the direction of arrow 17, arrow 17 symbolizing the opening direction. The lifting takes place in a known manner by means of an operating handle 12 designed as a handle, which is pivoted for this purpose in the direction of arrow 18 of the rotary movement. The rotary movement is transmitted to a drive rod 11 via an actuating linkage 10 of a known type arranged in a fitting groove 8, 9. The fastening linkage 10 is also coupled in a known manner via a lower corner deflection 13 to a front carriage 14. A connecting rod 19 leads to a second rear carriage 14. Die Fig. 1 the drawing shows a window or a door with a fixed frame 4, as well as two movable wings 2. Via a rotary movement 18 of the actuating handle 12, the drive rod 11 is moved upwards in the direction of arrow 16 in the direction of the slide. This causes a displacement of the carriage 14 in relation to the lower wing end in the closing side. A known pushing device connected between the carriage 14 and the lower wing end, for example with tabs or lifting cams, simultaneously causes the wings 2, 3 to be raised in the direction of arrow 16 of the lifting direction relative to the carriage 14 or the fixed frame 4.

The wings 2, 3 are sealed at its lower end, for example via two sealing strips (not shown) embedded in the lower cross member, against the fixed frame 4, these sealing strips being pressed onto horizontal legs of a running rail 5 in a sealing manner. Upper, not shown sealing strips are pressed with the wings 2, 3 lowered at the associated profile end of an upper, also not shown guide rail. Corresponding sealing strips are also located on the vertical bars of wings 2, 3. If the first wing 2 or second wing 3 is initially only lifted, that is to say moved on its plane, the lower and upper sealing bars are released, but the sealing bars remain on the vertical bars undervoltage. Accordingly, both lifting and lowering of the wing 2, 3 with pure lifting-lowering movement within the wing plane is associated with a correspondingly high level of friction. The friction can be so strong that a high, narrow and light sash does not lower itself under its own weight when its lowering stroke is released. Furthermore, there is also in the case of narrow and light wings in the closed position 1 to 4 and 7 to 9 the possibility of lifting wing 2 and / or wing 3 and levering it out accordingly. In order to counteract a possible levering out, at the same time, however, also all design variants Fig. 10 To be designed with increased burglary protection and at the same time being forced to lower, the new closure device 20 is mounted on the upper and lower leaves 2 and 3 on the closing side, with latch interlocks 26 provided for this depending on the design variant.

Essential elements of this fitting are the components that have already been mentioned and those that are generally described below, such as the actuating linkage 10 with the drive rod 11 on the closing wing vertical spar 6, 7, a latch engagement 26, and finally after 2 to 6 the locking device 20 with the guide part 22 and the pivot bolt 24. The actuating linkage 10 preferably has at its upper and lower ends in the drive rod 11 a cutout 50 which is in a form-fitting connection with a driver 23 arranged in the locking device 20, as a result of which the stroke transmission on the closure device 20.

To Fig. 2 The fitting has a locking device 20, which is fastened to the actuating linkage 10 within the fitting groove 8, 9 by means of a housing 21 and can be coupled to the actuating linkage 10 via the guide part 22. The guide part 22 is movable with actuation of the drive rod 11 of the actuating linkage 10 and transfers the pivot bolt 24, which is controlled on the guide part 22 by a driver guide 51 and rotatably mounted on the housing 21 of the closure device 20 via a pivot point 41, by a concealed part in the housing 21 within the actuating linkage 10 located opening position, against the direction for lowering the wing 2, 3 in a free operating field 15 of a closed position.

For this purpose, a free end 25 of the pivot bolt 24 is inferior to the transition to the closed position 2 to 4 engages with a pin 27, which is fastened to the second wing 3 in this exemplary embodiment and arranged in the latch engagement 26. In order to additionally increase the protection against unauthorized lifting, in particular in the case of an embodiment variant with two mutually displaceable wings 2, 3, the pivot bolt 24 arranged on the wing 2 detects 2 to 5 a keyway 28, into which a V-rib washer 29 arranged on the pin 27 of the bolt engagement 26 arranged on the wing 3 in the closed position 5 and 6 intervenes. As after an enlarged view of the Fig. 3 illustrates, the exercise of a positive and / or non-positive operative connection is achieved by flanks 30 arranged on a convex V-rib 31 of the V-rib washer 29 on the flanks 32 of the wedge groove 28. The keyway 28 is formed transversely to the direction of rotation 34 of the pivot bolt 24 starting from an outer surface 33 in the direction of the material of the pivot bolt 24 as an inwardly narrowing groove which is concave in the direction of rotation 34 on the outer surface 33. When one of the wings 2 or wing 3 is raised without authorization against the second wing 2 or wing 3, the flanks 30 and 32 wedge into one another, so that with a change of the positive operative connection into the non-positive operative connection, a constraint between the components of the pivot bolt 24 and the pin 27 arises, which makes lifting with improper handling of one wing 2 to the other wing 3 impossible.

After the enlarged view of the Fig. 3 the V-rib 31 of the V-rib washer 29 is made wider in cross-section from the outside 35 in the direction of the axis of rotation 36. Thus, the V-rib 31 of the pin 27 can be joined by the automatic alignment of the flanks 30 to the flanks 32 of the respective keyway 28 or keyway 46 of the pivot bolt 24, in the closed position or in the gap opening position.

To create a low frictional resistance of the V-ribbed disk 29 to the pin 27 with a large resistance of the V-ribbed disk 29 to the pivot bolt 24 during a Attempted lifting or improper lifting of a wing 2, 3, the V-rib washer 29 is formed in two parts rotatably mounted on the pin 27 or formed as a one-piece unit with the pin 27.

The latch engagement 26 has a latch plate 37 arranged almost flush with the frame 4 with a cutout 38 for the swivel latch 24 to reach through. When the free end 25 of the pivot bolt 24 engages in a distance 39 that is free between the pin 27 and the locking plate 37, a gap opening position is formed. The locking plate 37 is after 5 or 6 connected to the bolt engagement 26 by means of fastening screws 52.

Corresponding means 53 on the housing 21 2 to 6 enable the positive and / or non-positive attachment to the actuating linkage 10. The means 53 is a breakthrough through which the locking device 20, for example by means of spring pins, not shown, on a faceplate 54 7 to. Fig. 9 components that are movable transversely to the direction of movement of the closure device 20 and that of the actuating linkage 10 are fixed and fastened, for example, by riveting. Due to the simple design and assembly of the closure device 20 on the actuating linkage 10, one or more closure devices 20 are attached to the actuating linkage 10 as required.

The movement apparatus of the closure device 20 is coupled with the actuating linkage 10 Fig. 3 by means of a driver 23, which projects from the opening 55 of the housing 21 in the direction of the actuating linkage 10 on the guide part 22 and which can be positively coupled to the cutout 50 of the drive rod 11 of the actuating linkage 10. In this embodiment, the driver 23 is rectangular in cross section, since the guide part 22 made of a strip material already specifies the shape of the driver 23. However, other forms of driver 23 are also possible.

When the gap opening position is reached after 5 and 6 , The swivel bolt 24 between the pin 27 and the locking plate 37 is completely positively connected. By reaching through the pivot bolt 24 through the cutout 38 of the locking plate 37 and engaging the free end 25 of the pivot bolt 24 in a free distance 39 between the pin 27 and the locking plate 37, which after 5 and 6 forms the gap opening position, the V-ribbed disk 29 engages with the V-rib 31 in an outer surface 40 of the keyway 46 of the pivot bolt 24 arranged on the opposite side of the outer surface 33. The keyway 46 is designed to match the cross section of the keyway 28, is offset in the direction of the axis of rotation 41 of the pivot bolt 24 and continues to run Fig. 6 open to the free end 25. Thus, the first wing 2 is held securely to the second wing 3 in the closed position and in the gap opening position. The release of the shutter or gap opening position is only achieved via the operating handle 12 with transfer to the actuating linkage 10. An opening by unauthorized manual intervention on the locking device 20 is not possible due to the positive engagement of the pivot bolt 24 to the bolt engagement 26.

The free end 25 of the pivot bolt 24 after Fig. 2 and Fig. 6 is hook-like and runs in a radius. Due to the simple shape, the wing 3 is pressed and held against the wing 2 during transfer into the closed position. In addition, the circular shape of the free end 25 means that even when the wing 3 is not lowered independently due to its own weight due to the friction of the sealing strips arranged on the wing 3 to the wing 2 into the closed position, both a contact pressure and a controlled forced lowering to the frame 4 he follows.

Security against burglary and an optical advantage of the closure device 21 are shown in FIG Fig. 3 and 5 to be seen in the fact that the engagement of the pivot bolt 29 with the pin 32 in the closed position is on the one hand concealed and, on the other hand, that the non-positive connection is compressed by the wedge action on the flanks 30 of the keyway 28 and the flanks 32 of the wedge rib 31 comes, thereby increasing the frictional resistance.

The material of the locking plate 37 can be selected in accordance with the requirements of a resistance load.

The latch engagement 26 is manufactured from a metallic strip material, for example after Fig. 2 the angled plates 43, 44 extend at a right angle to the base plate 56 of the latch engagement 26. The load-bearing plates 43, 44 form a U-shape with respect to the base plate 56 and, through bores arranged at the respective free ends, take on the pin 27, which is connected to the plates 43, 44 by means of a non-positive connection, preferably a riveted connection. Due to the one-piece design and the fact that the pin 27 has a roller 42 which is rotatably supported between the plates 43, 44 and the V-ribbed disk 29 and the roller 42 are formed in one piece, the latch engagement 26 receives high strength and holds loads, for example in the Theft occurred.

The illustrated embodiments according to Fig. 10 show the installation variant of the window or door Fig. 1 on and other possible installation variants of windows and doors based on the actuating linkages 10. A distinction from the embodiment of Fig. 1 can be seen in the fact that the window or the door more has wings that can be lifted and then moved in the direction of the arrow, the arrow symbolizing the opening direction of the window or the door. The lifting and moving are carried out in a known manner by means of the operating handle 12 and actuating linkage 10, as well as other fitting components such as Fig. 1 described above. Alone Fig. 10 Movable wings shown can be equipped with the present closure device 20.

LIST OF REFERENCE NUMBERS

1

Window door

2

wing

3

wing

4

frame

5

runner

6

wing spar

7

wing spar

8th

fitting groove

9

fitting groove

10

operating linkage

11

driving rod

12

Operating control

13

Corner transmission

14

carriage

15

field of activity

16

Arrow (wing lifting direction)

17

Arrow (opening direction wing)

18

Arrow (direction of rotation of operating handle)

19

connecting rod

20

closure device

21

casing

22

guide part

23

takeaway

24

swivel bolt

25

The End

26

locking engagement

27

spigot

28

keyway

29

V-ribbed pulley

30

flank

31

V-rib

32

flank

33

outer surface

34

direction of rotation

35

outside

36

axis of rotation

37

locking plate

38

neckline

39

distance

40

outside

41

axis of rotation

42

role

43

plate

44

plate

45

distance

46

keyway

50

neckline

51

follower guide

52

mounting screws

53

medium

54

sash profile

55

opening

56

baseplate

Claims (8)

1. Fitting for two sashes (2, 3) which are movable at least by lifting and sliding, and which are guided in a fixed frame (4) of a window or a door (1) on a running rail (5), wherein an actuating linkage (10) is situated on a first and second vertical sash member (6, 7) within a fitting groove (8, 9) of the first and second sash (2, 3), which actuating linkage has a driving rod (11), which is downwardly displaceable in order to lower the sash (2, 3) by means of an actuating member (12), and transmits the displacement via a corner deflector (13) to at least one coupled carriage (14), and the fitting has a closure device (20), which is fastened by means of a housing (21) to the actuating linkage (10) within the fitting groove (8, 9), and can be coupled via a guide part (22) to the actuating linkage (10), wherein the guide part (22) can be moved by actuating the driving rod (11) of the actuating linkage (10), and transfers a pivoting latch (24), which is controlled by the guide part (22) and rotatably mounted on the housing (21) of the closure device (20), from an opening position which is situated in a concealed manner in the housing (21) within the actuating linkage (10), counter to the direction for lowering the sash (2, 3), into a free actuating field (15) of a closure position, wherein a free end (25) of the pivoting latch (24), upon passing into the closure position, is in rearward-engaging engagement with a pin (27) arranged on a latch engagement means (26) fastened to the second sash (3),
   characterized in that
   the pivoting latch (24) comprises a keyway (28), into which a ribbed disk (29), arranged at the pin (27), in the closed position engages onto the flanks (32) of the keyway (28), with the exerting of a positive-fit and/or a non-positive work connection onto the flanks (30) of a wedge rib (31).
2. Fitting according to claim 1,
   characterized in that
   the keyway (28) is a slot which, transverse to the direction of rotation (34) of the pivoting latch (24), from an outer surface (33) becomes narrower inwards, and which in the direction of rotation (34) is configured as offset to the outer surface (33).
3. Fitting according to claim 1,
   characterized in that
   the wedge rib (31) of the ribbed disk (29) is configured as becoming wider in cross-section from the outside (35) in the direction of the axis of rotation (36).
4. Fitting according to claim 1,
   characterized in that
   the ribbed disk (29) is configured as to be rotatably mounted on the pin (27), divided into two parts, or as a single-part structural unit with the pin (27).
5. Fitting according to claim 1,
   characterized in that
   the engagement means (26) comprises an engagement plate (37), arranged almost flush-surface at the frame (4), with a cut-out opening (38) for the passage engagement of the pivoting latch (24), and, with the engagement of the free end (25) of the pivoting latch (24) into a free spacing gap (39) between the pin (27) and the engagement plate (37), forms a gap-opening position, wherein the ribbed disk (29) with the wedge rib (31) engages into a keyway (46) of the pivoting latch (24), arranged on the outer surface (40) opposite the outer surface (33).
6. Fitting according to claim 5,
   characterized in that
   the keyway (46) is adjusted to the cross-section of the keyway (28), is configured as offset in the direction of the axis of rotation (41) of the pivoting latch (24), and runs out openly to the free end (25).
7. Fitting according to claim 1,
   characterized in that
   the free end (25) of the pivoting latch (24) is configured as hook-shaped, and runs in a radius which presses and holds the first sash (2), upon passing into the closing position, against the engagement means (26) arranged at the second sash (3), wherein, at the raising of a sash (2,3), without actuation of the actuating linkage (10), a compression of the non-positive connection is imposed by the wedge effect of the flanks (30) of the keyway (28) and the flanks (32) of the wedge rib (31), and thereby increases the frictional resistance.
8. Fitting according to claim 4,
   characterized in that
   the pin (27) comprises a roller (42), which is rotatably mounted between the plates (43, 44) of the engagement means (26), wherein the spacing gap (45) between the plates (43, 44) is adjusted to the material thickness of the pivoting latch (24), wherein the ribbed disk (29) and the roller (42) are configured as being of one piece.

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