EP1092828B1 - Self-locking latch for wings - Google Patents

Abstract

The self-locking system, for a swing panel (2), has a swing locking member (15) which is mounted to the frame (1) so that, when released, the panel (2) can move into an open position and, in the closed position, it grips over a step (3) at the panel (2). A toggle lever operating system (8,13,14) swings the locking member (15) between the released/locked positions with movement through a dead point, and especially shortly before reaching the locked position. When in the locked position, the locking member (15) automatically braces the panel (2) against an opening movement force.

Description

The invention relates to a locking device for sashes of windows, doors or the like, especially for motorized between the closed and open positions movable wings.

The invention is particularly suitable as an additional lock for windows in Skylight area, whose wings with electric scissors or the like motorized Drives are movable. This is particularly the case with such wings (see e.g. document US-A-4 768 815) Wing pressure often only at one or two points of the wing flap. This is enough for a secure and tight pressing of the wing in the closed position is often not sufficient, especially when, as with motor-driven wings, a Central lock in the wing is missing. This also means that the wing is missing in the To keep the closed position with sufficient sash pressure so that leaky windows are the result. In addition, such a wing passes through without great difficulty external influence can be pressed, so that with motor-operated wings burglary protection is poor. In addition, different rollover heights are required of the wing profiles are taken into account. This can lead to the well-known Systems certain functional uncertainties with differently projecting wings have shortly before the closed position.

It is an object of the invention to provide a locking device for wings, which can be used as an additional device independent of the normal actuation of the wing in order to close and / or lock the wing reliably, ie tightly, in such a way that better security against burglary is obtained.

This task is performed by a locking device according to the teaching of Claim 1 or 3 solved.

There can be one or more in addition to the usual actuator additional locking devices can be mounted on the frame that can be assembled and operated independently of each other. By a such locking device, for large windows by several such Locking devices, a reliable wing pressure can be achieved and at the same time, the wing is reliable against external forces acting in the opening direction lock so that a high level of security against burglary is achieved.

The (hook-shaped) locking member (claim 14) is a toggle-like Actuating system between its two end positions, the toggle-type operating system in its movements between the End positions of the locking member exceeds its extension or dead center position or runs through, shortly before reaching the locking end position. The Angle of rotation above the dead center or the stretched position is approximately 10 °, preferably between 10 ° and 20 °, calculated from the extended position at which the shaft axis and the two Joints of the toggle lever piece lie in a straight line (claim 15).

The toggle-type actuation system itself can be motor-driven (Claim 6), regardless of the other operating system of the Wing.

The motor drive is arranged on the same side as the swiveling one Locking member. The arrangement can be made on a plate or a housing, the plate itself being attachable to the frame. The motorized operation by an electric motor, for example, starts from an axis that essentially runs parallel to the pivot axis of the locking member.

The locking device is attached as a whole to the frame and can in be arranged in a corresponding housing in which the locking member withdraws when it reaches its release position, so that the locking member in this position is hidden.

The plate or housing is attached to the frame without there Breakthroughs to be provided for the penetration of actuating rods or Actuating means. Such a flat contact causes the active parts of the Locking device are all arranged on the same side, in particular the Drive motor with the end of its drive shaft tight or close to that Pivotal axis of the locking member comes to rest.

For example, if the wing is closed by a motorized locking system the closed position is moved, its driving force is sufficient for a firm pressure of the wing mostly not, that is, the wing is at the end of the movement slightly off compared to the frame. In this position he is from the Locking element detects that by its rotational movement which is still easy protruding sash and the frame (against the seal between Frame and casement) presses firmly. In this position it has toggle-type actuation system already run through its extended position and is in locked this position self-locking, so that when on the toggle-like Actuating system is no longer a driving force, nevertheless the Locked position is reliably maintained, in such a way Dimensions that a tight closing of the wing as well as the blocking by external opening forces are guaranteed. The locking member can thus from its locking position by external forces only when the Deactivate the locking element.

If the locking device is driven by a motor, for example by an electric motor, a load cut-off of the motor is expediently provided, whereby the motor is de-energized after reaching the locking position (closed position) becomes. The load cut-off takes effect when both end positions are reached.

The device can also be developed so that the positions of the (hook-shaped) Locking element can be detected electronically. Self - locking the facility in the locking position is advantageous through the measures of claim 2 realized, the claim 8 also a preferred embodiment for the Self-locking as a supplement to claim 2 and claim 1 comprises.

Figur 1

zeigt im Ausschnitt und in perspektivischer Ansicht eine Verriegelungseinrichtung gemäß der Erfindung in ihrer Verriegelungsstellung.

Figur 2

zeigt wesentliche Teile der Verriegelungseinrichtung nach Figur 1 in auseinandergezogener perspektivischer Darstellung.

Figur 3

gibt in ähnlicher Darstellung wie Figur 2 ein abgewandeltes Ausführungsbeispiel wieder.

Figur 4, Figur 5

zeigen in Stirnansicht und im Querschnitt des Fensters die beiden Endstellungen des hakenförmigen Verriegelungsgliedes der Verriegelungseinrichtung in der Ausführung nach Figur 1.

Figur 6

zeigt schematisch ein Detail der Einrichtung nach den Figuren 1, 4 und 5.

The invention is explained in more detail below with the aid of schematic drawings using several exemplary embodiments.

Figure 1

shows in detail and in perspective view a locking device according to the invention in its locking position.

Figure 2

shows essential parts of the locking device according to Figure 1 in an exploded perspective view.

Figure 3

shows in a representation similar to Figure 2 a modified embodiment.

Figure 4 , Figure 5

show in front view and in cross section of the window the two end positions of the hook-shaped locking member of the locking device in the embodiment of Figure 1.

Figure 6

shows schematically a detail of the device according to Figures 1, 4 and 5.

The locking device 5 is fixed as a whole on the frame 1 without Breakthroughs from the outside. The whole facility can not be done by one shown, in particular elongated housing covered towards the interior or be included, only the hook-shaped locking member 15 here emerges from this housing when pivoting into the locking position. All active elements, motor 6, locking member 15 and a toggle system 8 are on arranged on the same side, shown here on the same side of a plate 30. On corresponding housing for receiving the locking member in the Release position can be found in Figure 2.

The locking device acts on the wing 2 via the wing flap 3 to be able to apply sufficient force without damaging the casement, can an abutment plate 4 at the corresponding contact point of the wing be attached. This can have a special meaning in that by choosing the thickness of the plate 4 or by attaching one or more Shims under the plate 4 different rollover thicknesses or the like can be compensated.

In the present description it is assumed that the Locking device can be actuated by an electric motor, as is probably the case in particular this is usually the case for windows in the skylight area. For this purpose, the Locking device 5 an electric motor 6, which has a corresponding Reduction gear drives a shaft 12 on which a lever-like Force introduction element 13 (see FIG. 4) is attached. A continuation of the Drive shaft is designated as a pin with 12a.

A hook-shaped is used to pull, press and lock the wing 2 Locking member 15 which by means of a bracket 10,10b or 30 on the frame by an offset to the axis of the drive shaft 12, but to this parallel axis 17 in an inserted holding piece 11 or separate arms 11a is pivotally mounted. At a distance from the pivot axis 17, the Locking member 15 has a hook-shaped locking lug 16, which with the Abutment plate 4 can cooperate on the sash 2. At a distance from the Pivot axis 17 and the locking lug 16 has the locking member 15 Articulation point 18 for the articulation end 20 of a (bent) toggle lever 14. The other end 19 of the toggle lever 14 is at the free end 22 of the lever-like Force introduction element 13 articulated. The parts 13, 14 and 15 thus form one toggle-type actuation system 8, in which an actuation force over the Electric motor 6 and its shaft 12 can be initiated via an engagement 21, 21 a what force as the closing and locking force of the hook-shaped Locking member 15 on reaching the closed position (Figure 5) Casement 2 is transmitted.

The hook-shaped locking member 15 has on its back, i. H. on the of the side facing away from the locking lug 16 between the articulation points 17 and 18 a recess 25 open to the edge. This is designed and arranged so that at the lever-like force introduction element 13 with the movement into the release position its end attached to the shaft 12 can dip as best as possible Figure 4 can be seen, it being seen that in the release position Articulation points 17 and 18 and the drive shaft 12 practically on a common Line can come to rest.

From Figure 4 it can also be seen that the hook-shaped locking member 15 in the Release position is almost completely immersed in the outline of the electric motor 6, so that the device can be easily accommodated in a small housing, wherein in the release position the locking member is hidden in the housing is included.

Figure 4 also shows between the frame and sash 2 in the area of Roll over 3 a crack. The size of this gap is made up of the Thickness of the seal, not shown, and a slight protrusion of the wing 3 ' at the end of a closing movement of a (not shown) control system of the Wing. To close the sash in a sealing and burglar-proof closed position bring, the locking device is actuated, the shaft 12 that Force introduction element 13 in Figure 4 pivots clockwise. On the The toggle lever 14 is the hook-shaped locking member 15 around its fixed frame Swivel axis 17 also pivoted clockwise. The shaft 12 occurs out of the recess 25. The articulation 19.22 between Force application element 13 and toggle lever 14 migrates to an angle of more than 180 ° and shortly before the locking position (Figure 5) exceeds the stretching or Dead center position of the toggle-type actuation system 8. The dead center position is in Figure 5 by a dashed line T between the shaft 12 and the Articulated connection reproduced 18/20, while the relative position of the relevant joints in the locking position by the in Figure 5 excellent joints or shaft 12, 18/20, 19/22 is reproduced. The Angle α above the stretched position is approximately 10 °, preferably between 10 ° and 20 °.

The locking position of the hook-shaped locking member 15 is determined in that the free end of the lever-shaped force introduction element 13 creates a stop surface 26 of the hook-shaped locking member 15, as this Figure 5 shows. This stop surface is in the area of the recess 25, and indeed near the recess edge on the side of the pivot axis 17. Die The more precise location is shown again schematically in FIG. 6. So that's it Locking device in its locking position automatically against opening locked, even if the electric motor 6 of the toggle-type actuation system 8 at Reaching the locking position, for example by an electronic one Load cut-off, automatically switched off and thus de-energized.

When looking at FIG. 5, it can be seen that those acting in the opening direction external forces on the wing 2 a force in the direction of the pivoting movement the locking member takes effect. This force could theoretically be beyond that Stop surface 26 in the opening direction on the lever-shaped Force application element 13 act and this over the dead center position swing away, which could lead to a slight opening of the wing. In fact, however, this external force presses the locking member 15 Articulation point 18/20 on the toggle lever 14, which in turn locks over the Articulation point 19, 22, acts on the lever-shaped force introduction element 13 and so effective this element and thus the whole toggle-type actuation system automatically holds or locks in the locking position shown, with all the more greater force, the greater the external forces are.

FIG. 3 shows a modified exemplary embodiment, in which two Knee levers 14a are provided, which are designed on both sides of the as a simple lever Force introduction element 13a are arranged. With the previously described Embodiment is provided only one toggle lever, while that Force introduction element 13, is formed with two arms and the toggle lever between his arms. Otherwise, the device according to FIG. 3 operates in the same way Way, like that of Figure 1. For this reason, the same reference numerals are below The addition of the letter "a" has been used.

The motor 6 becomes a structural unit with the locking device put together what by an angle plate 10b, 10c according to Figure 3, by a Housing 10 according to FIG. 2 or by means of a mounting plate 30 according to FIGS. 1, 4 and 5 can happen. The motor is mounted in a rotationally fixed manner and projects with it Shaft 12 in the lever 13 or 13a, which he in a rotary motion Activity. The axis of the motor 12 runs parallel to the axis 17 of the locking member 15 which, according to FIG. 4, has a pivoting movement A executes to the wing not yet drawn there with the dashed line to transfer overlap 3 'to the full closed position. in the Opening sense turns the locking member 15 against the direction A and gives the Opening direction for the wing in direction x freely, as shown in Figure 4.

When using a housing with an additional web 11, the bearing for the axis 17 of the locking member 15, the axis 12 of the motor 6 be stored twice, once in the motor housing and a second time with one Pin 12a at the free end, which engages in the three-legged web 11 according to Figure 2.

The pivot angle of the locking member between the two End positions (release position and closed position) are determined by the motor 6 caused rotation of the lever 13 causes this rotation more than 90 °, in particular more than 180 °. With this drive rotation of the lever the locking member 15 is actuated by an angle of essentially 90 °, that is significantly less than the drive angle of the lever 13, 13a.

The locking device can, as from the previous description and of the drawing, only unlock when the motor 6 is operating in the opening direction is taken. In addition to a high pressure force for sealing Locking the wing also a great security against burglary.

The locking device compensates for smaller differences in rollover heights automatically. Larger differences, for example from 2 mm, can be underlaid of the bearing block 10, the holding plate 30 to be arranged above the rollover for the motor 6 or the abutment plate 4 or by other measures, such as Height adjustment, inclined wedges with teeth and the like can be compensated. All known, simplifying assembly options can be used for assembly are used, which is obvious to the person skilled in the art and therefore need not be explained in more detail.

Claims (16)

1. A mechanism for locking a leaf (2) movable between a closed and an open position, the mechanism comprising a pivotable locking member (15) which is so mounted on the fixed frame (1) that

   (a) in a release position it releases the leaf (2) in a first direction (x) and

   (b) in a closed position it abuts a check striker surface (3) on the leaf (2) and locks it,

      also comprising a toggle lever-like actuating system (8; 13, 14) for pivoting the locking member (15) between the release position and the closed position, wherein the toggle-lever system (8; 13, 14), when the locking member (15) pivots between the two positions, moves between an extended or dead-centre position, especially shortly before reaching the locked position, and automatically blocks the forces opening the leaf (2) when the locking member (15) is in the closed position.
2. A locking mechanism according to claim 1, characterised in that the toggle lever-like actuating system (8; 13, 14) comprises a lever-like first force introduction element (13) mounted co-rotatably on a drivable actuating shaft (12), wherein the lever element (13) touches and abuts (26) the locking member (15) in the closed position.
3. A locking mechanism according to claim 1, wherein the locking member (15) is rotatable around a stationary axis (17) when moving into the locked position in a first direction (A) in order to pull the leaf towards and into the closed position.
4. A locking mechanism according to claim 1, wherein the locking member (15), when moving into the closed position or vice versa, rotates in the same direction as the elements (13, 14) of the toggle-lever system (8).
5. A locking mechanism according to claim 1, wherein the locking element (15) is mounted (30, 10) on the fixed frame, without apertures required for actuation on the fixed frame (1).
6. A locking mechanism according to claim 1, wherein the toggle-lever system (8) is drivable by a motor (6), especially by a motor (6) mounted on a base (30, 10) together with the pivotable locking member (15).
7. A locking mechanism according to claim 1, wherein a drive (6) actuating the bolt member (15) is disposed on the same side of the locking mechanism as the locking member (15).
8. A locking mechanism according to claim 2, wherein the force-introduction element (13) is coupled (18) for driving purposes to the locking member (15) by at least one toggle-lever member (14) and in the closed position a region of the force introduction element (13) to which the toggle-lever member (14) is pivoted abuts a surface (26) of the locking member (15) which limits the pivoting motion of the force introduction element (13) in the locking direction, so that the external forces acting on the leaf (2) in the opening direction

   (a) are transmitted to the force introduction element (13) via the toggle-lever member (14) towards the abutment surface (26) and prevent the force introduction element (13) from pivoting in the direction towards the release position;

   (b) are converted into a closing force, or

   (c) are transmitted to the lever element (13) via the place (26) of contact and, via the toggle-lever member (14), are converted into a locking pressure by the locking member.
9. A locking mechanism according to claim 1 or 8, characterised in that the locking member (15), between its bearing (17) and the coupling place (18) of the toggle-lever member (14), has a recess (25) for receiving an end portion of the force introduction element (13) disposed on the shaft.
10. A locking mechanism according to claim 9, wherein the contact or abutment surface (26) is situated in the region of the recess (25).
11. A locking mechanism according to claim 1 or 8, wherein the two positions are in the form of end positions bounded or fixed by a special shape given to the locking member (15).
12. A locking mechanism according to claim 9, characterised in that the abutment surface (26) automatically, by abutment, stops a pivoting motion of the locking element (15) in the direction of the closing position after reaching a rotary position close behind the extended or dead-centre position of the toggle lever-like actuating system (18).
13. A locking mechanism according to claim 9 or 12, characterised in that the recess (25) and the toggle lever-like actuating system (8) are so constructed that in the release position the actuating shaft (12) lies in the recess (25).
14. A locking mechanism according to claim 1 or 8, wherein the locking member (15) is hammer-head or hook-shaped.
15. A locking mechanism according to claim 1 or 8, wherein the locked position is at an angle (α) greater than 5°, especially between 5°, 10° and 20°, behind the dead-centre or extended position.
16. A locking mechanism according to claim 1 or 8, wherein the angle through which the locking member (15) pivots is due to rotation through more than 90° by a lever (13) in the system (8).

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