EP0199270B1 - Device for keeping a door or window at least ajar - Google Patents

Abstract

To keep a window or door leaf in an ajar position, a housing (2) is fastened to the window or door jamb (1), and in this housing a receiving slot (4) for a catch pin (6) assigned to the leaf (5) is provided and a catch body (10) with at least one catch recess (11) for the catch pin is mounted displaceably, transversely relative to the receiving slot (4), between a locking position and a release position. To ensure a low constructional height, whilst at the same time guaranteeing simple handling, the receiving slot (4) extends parallel to the jamb leg carrying the housing (2) and has an introduction orifice (7) closable by a blocking slide (8) and intended for the catchpin (6) articulated on the leaf by means of a link (19). Furthermore, the catch body (10) is displaceable out of its locking position into its release position counter to the force of a restoring spring (14). <IMAGE>

Description

The invention relates to a locking device for a window or door leaf in at least one night ventilation position, consisting of a housing which can be fastened to the window or door frame, in which a receiving slot running parallel to the longitudinal axis of the housing is provided for an organ intended for coupling with the leaf, and a latching body between one Locked position and an unlocked position is held transversely to the receiving slot.

A locking device of this type is known from US-A-1 992 886, and this locking device serves to hold a windshield in both the closed and in various adjustable opening positions. In this known arrangement, a permanent, non-detachable connection between the windshield or the wing and the body is provided via the locking device. This connection is achieved via a cross pin which is fastened to a swivel arm which engages in the receiving slot in the housing and has a length which is greater than the width of the receiving slot.

From AT-B 368 594 a device for releasable rotation limitation of swinging sash windows is known which has a locking member mounted on a wing, engaging in the fold between the wing and the stick, designed as a tab or scissor, and at its free end one against the stick leg protruding, essentially T-shaped head, which can be inserted into an undercut receiving recess in the stick leg via a closable insertion opening. The lock for the insertion opening is arranged in a housing forming a receiving recess. This device serves to increase the security against burglary, which is achieved in that the housing is moved near the axis of rotation of the pivoting window and thereby the possible opening gap even when the maximum opening width of the rotary limiting device in the area of the lock is so small that access between the wing and the stick in the area of the housing is impossible.

From DE-GBM 1 922 908 a locking device is known in which the receiving slot of the housing which can be fastened to the window or door frame extends normally to the floor level, so that the locking pin screwed onto the wing engages in the receiving slot when the wing is closed from its rotational opening position. Due to the locking body, which is slidably mounted in the housing in the longitudinal direction of the support leg and has two locking recesses for the locking pin, the locking pin can be held within the receiving slot in two locking positions, which correspond to two gap ventilation positions of the wing. In order to be able to open the wing into a night ventilation position not only about its axis of rotation, but also about its tilt axis, the edge of the receiving slot facing the tilt axis runs along a circular cylinder concentric with the tilt axis. A disadvantage of this known locking device is that due to the orientation of the receiving slot perpendicular to the floor level, the housing must have a depth that is greater than the desired width for the ventilation gap, which in particular with larger ventilation gaps causes a disturbing protrusion of the housing into the interior of the room. In addition, the locking body can only be moved across the locking pin into the locking position transversely to the receiving slot when the locking pin actually assumes the intended position, so that the handling of the locking device is difficult. In addition, the locking device is not childproof because the locking body for unlocking the locking device only has to be withdrawn from the locking position into the unlocking position via an actuating handle and in this unlocking position is held by means of a locking device. Also, due to the inevitably necessary oversizing of the locking recesses, a disturbing rattling of the window or door leaf in its night ventilation position cannot be avoided.

From DE-B-1 075 006 a detachable opening device for tilt-lift-swing sashes of windows or doors on the vertical opening side is known, which consists of a pivoting arm articulated on the fixed frame, a head pin and a head pin guide with opening, whereby the head pin is arranged on the wing and the head pin guide on the extension arm. This device, which can be moved without a displaceable latching body in the deployment arm forming the head pin guide, must be brought into the coupling position by pivoting by hand and also leaves something to be desired in terms of the child safety to be demanded.

The invention has for its object to avoid the shortcomings of the locking devices described above and to improve the locking device of the type defined in the introduction so that not only simple, childproof handling, but also a flat design for comparatively large ventilation gaps can be ensured, specifically while holding the window or door leaf without rattling.

This object is achieved according to a first embodiment of the invention in that the housing and the coupling element assigned to the wing can be uncoupled to enable a rotary-pivoting movement of the wing designed as a turn-tilt wing and the housing has an insertion slot for the coupling element upstream of the receiving slot that the coupling element is positioned in the insertion slot when the wing is closed, and that the insertion slot is optionally available by means of a slide is lockable.

The locking device thus effective both in the rotating and in the tilted position of a wing makes it possible, due to the positioning of the coupling member inevitably occurring when the wing is closed, in the position in this position, i. H. when the sash is closed, the insertion slot is neutral, by simply actuating the slide, to bring the locking device into the active position or to leave it inactive, thus allowing the wing to tilt or pivot open independently of the locking device.

The presence of the slide provides the desired child safety in connection with the latching body, since the latching pin is caught in the receiving slot when the insertion opening is closed and is held in the desired slot ventilation position of the wing by the latching body in the receiving slot.

In order to simplify the insertion of the locking pin into the locking recess for the smallest ventilation gap, the locking body can be in the area in a further embodiment of the invention of the receiving slot have an inclined run-up surface for the locking pin, so that when the wing is opened after closing the insertion opening, the locking pin guided within the receiving slot presses the locking body against the force of the return spring into its unlocking position against the force of the return spring and automatically engages in the following locking recess. After the insertion opening of the receiving slot has been closed, it is therefore only necessary to open the wing either by tilting or pivoting in order to get into the gap ventilation position with the smallest gap width. If a further gap ventilation position is to be achieved, the latching body must be brought into its unlocked position by hand against the force of the return spring before the sash can be opened further. No run-up surfaces are desired in the area of the recesses so that the sash cannot leave the set night ventilation position due to a corresponding load.

The locking body must be able to be moved into its unlocking position transversely to the receiving slot. A pure displacement movement of the locking body harbors the risk of the locking body tilting in its displacement guide, in particular with a one-sided locking body loading, as occurs when the locking body is adjusted via the locking pin acting on the ramp surface. In order to rule out malfunctions due to such canting with certainty, the latching body can be mounted via two lateral bearing lugs forming an axis of rotation in two mutually opposite grooves of the housing which run transversely to the receiving slot. These two grooves form a sliding guide for the bearing lugs, so that the locking body can be moved over the bearing lugs in the grooves and can also be rotated around the bearing lugs. Depending on the load the locking body is therefore shifted or pivoted, which ensures the correct adjustment of the locking body.

In order not to have to provide a separate handle for the locking slide and the locking body, the locking slide provided with an actuating handle can be displaceably held transversely to the receiving slot in the housing and supported on a guide web of the locking body. As a result, the locking slide can be moved via the actuating handle to close the insertion opening on the one hand along the guide web and, on the other hand, displaced to unlock the locking body transversely to the guide web, because the locking slide is supported on the guide web of the locking body and adjusts the locking body transversely to the receiving slot via this guide web. This construction not only offers advantageous handling, but also simple guidance for the locking slide between the housing and the guide web of the locking body.

So that opening of the wing from a night ventilation position can be avoided under all circumstances, the closed position of the locking slide can be locked by means of a lock. After the locking slide has been locked, it is only possible to adjust the sash between its closed position and one of the intended night ventilation positions.

Finally, in order to ensure the pivoting position of the handlebar having the locking pin, which is required for closing the wing from the tilting or rotating opening position, the handlebar carrying the locking pin can be pivoted on the wing against a weight or spring load, so that the handlebar independently after its release returns to its original position.

According to a second embodiment of the invention, the object is achieved in that the housing is pivotally attached to the window or door frame and has an closable by means of a slide inlet slot for a connecting pin forming the wing-side holding element that in the closed position of the wing a pin receiving groove in Housing longitudinal direction movable coupling member is aligned with the inlet slot, that the coupling member is resiliently mounted in the transverse direction of the housing and is provided on the side facing away from the sprung side with locking cams that cooperate with a corresponding locking bar extending substantially over the length of the housing, and that the slide is provided with an adjusting rod which extends over the entire length of the locking bar, for example with a helical tooth, for the position-independent decoupling of the coupling member and locking bar.

This solution provides great variability in the setting of the gap opening width combined with high functional reliability.

Fig. 1

einen Längsschnitt durch das Gehäuse einer erfindungsgemäßen Feststellvorrichtung,

Fig. 2

diese Feststellvorrichtung in einer Verriegelungsstellung für eine Spaltlüftungsstellung des um seine Drehachse geöffneten Flügels in einer schematischen Seitenansicht,

Fig. 3

eine der Fig. 2 entsprechende Darstellung einer Spaltlüftungsstellung für einen um seine Kippachse geöffneten Flügel,

Fig. 4

eine schematische Prinzipdarstellung einer zweiten Ausführungsform einer erfindungsgemäßen Feststellvorrichtung,

Fig. 5

eine schematische Teildarstellung des bei der Vorrichtung nach Fig. 4 verwendeten Gehäuses mit eingesetztem Kupplungsorgan, und

Fig. 6

eine schematische Seitenansicht einer einen Bestandteil der Vorrichtung nach Fig. 4 darstellenden und zur Betätigung des Kupplungsorgans dienenden Stellstange.

The invention is explained in more detail below using exemplary embodiments with reference to the drawing; in the drawing shows:

Fig. 1

2 shows a longitudinal section through the housing of a locking device according to the invention,

Fig. 2

this locking device in a locking position for a night ventilation position of the wing open about its axis of rotation in a schematic side view,

Fig. 3

2 a representation of a night ventilation position for a wing open about its tilt axis,

Fig. 4

1 shows a schematic basic illustration of a second embodiment of a locking device according to the invention,

Fig. 5

4 shows a schematic partial illustration of the housing used in the device according to FIG. 4 with the coupling element inserted, and

Fig. 6

is a schematic side view of a part of the device of FIG. 4 and serving to actuate the coupling member actuating rod.

The locking device shown in FIGS. 1 to 3 essentially consists of a housing 2 which can be fastened to the window or door frame 1 and which has at least in one side wall 3 a receiving slot 4 for a locking pin 6 assigned to the window or door leaf 5. This receiving slot 4 runs parallel to the stick leg carrying the housing 2 and is provided with a transverse insertion opening 7 through which the locking pin 6 engages in the receiving slot 4 when the wing is closed from the tilting or rotating opening position. The insertion opening 7 of the receiving slot 4 can be closed by a locking slide 8 which carries an operating handle 9 for its handling.

To set the night ventilation positions, the locking pin 6 can be held within the receiving slot 4 in two locking positions. For this purpose, a locking body 10 is provided, which is mounted transversely to the receiving slot 4 in the housing 2 and two locking recesses 11 for the locking pin 6. 1, two lateral bearing lugs 12, which engage in two mutually opposite grooves 13 running transversely to the receiving slot 4, so that the bearing body 10 pivots on the one hand about the bearing lugs 12 as an axis of rotation and on the other hand transversely along the grooves 13 can be moved to the guide slot 4. As can be seen in FIG. 1, in which the position of the receiving slot 4, which is not visible in this section, has been indicated by dash-dotted lines, the latching body 10 is acted upon by a return spring 14, which in the exemplary embodiment is designed as a leaf spring and is located in a guide recess 15 of the insert Housing base 16 supports. The locking body 10 is consequently pressed by the return spring 14 against the locking slide 8, on which it rests with a guide web 17 which is provided on a side leg 18 of the locking body 10. The locking slide 8 is thus slidably guided parallel to the receiving slot 4 between the housing 2 and the guide web 17, it being possible to move the latching body 10 out of its locking position against the force of the return spring 14 into an unlocking position via the actuating handle 9, because yes Locking slide 8 is supported directly on the guide web 17 of the locking body 10.

If the locking pin 6 engages when the wing 5 is closed through the insertion opening 7 into the receiving slot 4, it is moved after the closing of the insertion opening 7 by the locking slide 8 when opening the wing according to FIG. 2 in its rotational position in the receiving slot 4 because the locking pin 6 is articulated on the wing 5 via a link 19. With this displacement movement within the receiving slot 4, the locking pin 6 strikes an inclined contact surface 20 of the locking body so that the locking body 10 is pressed into its unlocking position by the locking pin guided in the receiving slot 4 via the ramp surface 20 forming an adjusting wedge 20 against the force of the return spring 14 and the locking pin 6 snaps into the locking recess 11 for the smaller gap width because the locking body over the return spring is pressed back into its locking position. The locking pin 6 is thus held within the receiving slot 4 without play.

If the wing is to be brought into the second gap ventilation position, the latching body 10 must be pressed into its unlocking position by hand, which is done via the actuating handle 9 of the locking slide 7. After unlocking the locking pin 6, the sash can be opened until the locking pin 6 strikes the rear boundary wall of the locking recess 11, whereby the gap ventilation position for the larger ventilation gap is reached, in which the locking pin 6 is locked again.

To open the wing from a night ventilation position, the wing must first be closed by unlocking the locking device before the locking pin 6 can leave the receiving slot 4 through the insertion opening 7 after opening the locking slide 7. This closing movement of the wing, which is necessary for the locking pin 6 to emerge from the housing 2, represents an additional child safety device. In order to reliably prevent the locking pin 6 from escaping from the receiving slot 4 and thus prevent unauthorized opening of the wing, the locking position of the locking slide 7 can be locked by a lock 21 be lockable. According to the exemplary embodiment, this lock, which can only be actuated with a suitable key, has an eccentric pin 22 which engages in an elongated hole 23 of a locking finger 24. This locking finger 24 can by means of the lock 21 in the closed position of the locking slide 8 are pushed in front of a locking stop 25 of the locking slide, so that the locking slide 8 can no longer be withdrawn from its closed position.

In Fig. 3, the night ventilation position for the wing 5 in its tilted position is shown. By fixing the locking pin 6 within the receiving slot 4 by means of the locking body 10, a certain tilt position of the wing is ensured due to the predetermined length of the link 19.

In order to ensure the engagement of the locking pin 6 in the insertion opening 7 of the receiving slot 4 when closing the wing from its tilting or rotating opening position, the link 19 can be pivoted against a weight or spring load on the wing so that it assumes the desired starting position independently . For this purpose, it is sufficient to use the dead weight moment and to limit the swivel angle, for example by means of a stop 26.

Fig. 4 shows an embodiment of the locking device according to the invention, in which an elongated housing 30 is pivotally attached to the window or door frame 1 via a stop tab 31. A pin 34 is attached to the wing 5 by means of a stop part 32, which in the coupled position engages in the housing 30 via a longitudinal slot 43 and can be locked in this housing in different positions. The latching of the pin 34 in the housing can be released by means of a slide 33, and this slide 33 also serves to close an inlet slot 44 for the pin 34 on the housing side.

5 shows an inside view of the housing 30 with for releasably blocking a coupling member 35 accommodated in the housing 30 for different opening positions.

The housing 30 has an inlet slot 44 for the pin 34 provided on the wing side. The pin 34 can enter this slot 44 when the sash is closed and in the process reaches a pin receiving groove 36 of the coupling member 35. The inlet slot 44 can be closed by means of the end 45 of the actuating rod 38. A slot 43 extends in the longitudinal direction of the housing 30, in which the pin 34 can move when the device is in operation.

The coupling member 35 is biased in the direction of a double locking bar 41 by means of spring elements 37, which in this example are molded directly onto the plastic coupling member 35. The coupling member 35 has locking cams 40 which can engage in the corresponding rectangular toothing 42 of the locking strips 41. The two locking bars are spaced apart from one another, and between the two locking bars there is the actuating rod 38 shown in FIG. 6, which is provided with helical teeth 39 and can be actuated via the slide 33 projecting outward beyond the housing 30.

This actuating rod 38, which serves at the same time with its end 45 to close the inlet slot 44 of the housing, makes it possible to raise the coupling member 35 regardless of its instantaneous position against the force of the springs 37 from the square toothing 42 and thus to decouple it from the locking strips 41.
It can thus be seen that, by actuating the slide 33, the coupling member 35 can be locked in any position along the locking strips 41 and thus the gap opening width is adjustable according to the tooth steps.

Claims (7)

1. Device for keeping a window or a door (5) at least ajar, comprising a housing (2) attachable to the frame (1) of a window or a door, an accommodation slot (4) for a member (6) intended for the coupling with the window or door (5) being provided in the housing parallel to the longitudinal axis of the housing, and a latch body (10) held in the housing and displaceable transversely to the accommodation slot (4) between a latching position and a delatching position,
   characterized in that
   the housing (2) and the coupling member (6) associated with the window or door (5) can be decoupled in order to allow a rotating-and-tilting displacement of the window or door (5) which is realized as a rotating-and-tilting window or door; in that the housing (2) is provided with an introduction slot (7) for the coupling member (6), this introduction slot being located before the accommodation slot (4); in that the coupling member (6) is positioned in the introduction slot (7) when the leaf (5) is closed; and in that the introduction slot (7) can be selectively closed by means of a slider (8).
2. Device according to claim 1, characterized in that the latch body (10) is provided in the region of the accommodation slot (4) with an inclined ramp surface (20) for the pin (6); and in that the latch body (10) is mounted in two mutually opposite grooves (13) extending transversely to the accommodation slot (4) in the housing (2), by means of two lateral bearing projections (12) forming a rotation axis.
3. Device according to either claim 1 or 2, characterized in that the blocking slider (8) provided with an actuation handle (9) is held in the housing (2) so as to be displaceable transversely to the accommodation slot (4) and supported on a guide stay (17) of the latch body (10).
4. Device according to one of the claims 1 to 3, characterized in that the arm (19) carrying the latch pin (6) is hinged on the window or door (5) with capability of outwardly pivoting against a weight load or a spring load.
5. Device for keeping a window or door leaf (5) at least ajar, comprising a housing (30) attachable to the frame (1) of a window or a door, with an accommodation slot for a member (34) intended for the coupling with the window or door being provided in the housing parallel to the longitudinal axis of the housing, and a latch body (35) held in the housing and displaceable transversely to the accommodation slot between a latching position and a delatching position, characterized in that the housing (30) is pivotably attached on the frame (1) of the window or the door and is provided with an introduction slot (44) for a connection pin (34) which forms the window or door side holding element, this introduction slot (44) being closable by means of a slider (33); in that in the closure position of the window or door (5) a pin accommodation groove (36) of the coupling member (35) displaceable in the longitudinal direction of the housing is aligned with the introduction slot (44);
   in that the coupling member (35) is mounted with a spring bias in the transverse direction of the housing (30) and is provided with latch cams (40) on the side remote from the spring-biased side, the latch cams (40) cooperating with a corresponding latch strip (41) extending substantially over the length of the housing (30);
   and in that the slider (33) is provided with a positioning rod (38), for example realized with an oblique toothed shape, which extends over the entire length of the latch strip for the purpose of decoupling the coupling member (35) and the latch strip (41) independently of their position.
6. Device according to claim 5, characterized in that the latch strip (41) is provided on its two marginal regions with a toothed arrangement (42) with rectangular teeth; and in that a toothed arrangement with inclined flanks, which cooperates with a corresponding toothed arrangement (39) on the positioning rod (38), is provided between these two toothed arrangements with rectangular teeth (42).
7. Device according to claim 6, characterized in that the coupling member (35) is made of plastic material, and in that the spring (37) which produces the coupling effort is integrated into the structure or is formed directly thereon.

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