EP0294630A2 - Fastener for windows, doors, etc. - Google Patents

Abstract

A fastener for windows, doors or the like is equipped with a locking bolt (10) which passes through a longitudinal slot (15) of a face plate (16) and engages over it laterally by means of an especially mushroom-shaped locking head (26) and which is fastened adjustably in terms of rotation to an adjustable driving rod (11). So that the locking bolt (10) can be attached releasably as such to the driving rod (11) without special additional fastening parts, the fastener has the features that the locking bolt (10) engages behind the driving rod (11) through a keyhole-like recess (12) by means of a hammer head (13) and has a transverse web (17) to be arranged in a widening recess (14) of the longitudinal slot (15) of the face plate (16), and that the widening recess (14) has a catching diameter (33) which can be overcome by the transverse web (17) during the rotational adjustment of the locking bolt (10). <IMAGE>

Description

The invention relates to a locking fitting for windows, doors or the like. With a locking slot penetrating a longitudinal slot of a faceplate and with a mushroom-shaped locking head laterally overlapping locking bolt, which is rotatably attached to an adjustable drive rod.

Such a locking fitting is known from DE-OS 27 05 802. The rotatability of the known locking bolt is provided in order to be able to arrange the eccentrically designed locking head in different setting positions. The attachment takes place with a fastening screw, which must be loosened for the rotary adjustment of the locking bolt.

In contrast, the invention has for its object to improve a fitting of the type mentioned so that the locking bolt as such is releasably attached to the drive rod without special additional fasteners.

This object is achieved in that the locking bolt engages behind the drive rod through a keyhole-like recess with a hammer head and has a crossbar to be arranged in an expansion recess of the longitudinal slot of the faceplate, and in that the expansion recess has a locking diameter that can be overcome by the crossbar when the locking bolt is rotated.

It is important for the invention that no special parts, such as screws, are required for fastening the locking bolt. Rather, the locking bolt can be a one-piece part which can be fixed in the drive rod solely on the basis of the snap fit of the locking bolt which is brought about by means of the faceplate. The rotatability of the locking bolt is not used to adjust the fitting, but only to secure the bolt. Another advantage is that the measures available on the faceplate and on the drive rod can be achieved without any special manufacturing effort. Thus, both the keyhole-like recess of the drive rod and the expansion recess of the longitudinal slot of the faceplate are possible in a conventional manner by stamping processes at the same time as the production of the other recesses of the drive rod or the faceplate.

Because the keyhole-like recess of the drive rod and the extension recess of the longitudinal slot the faceplate can be made practically without additional manufacturing effort, the locking fitting is particularly suitable for retrofitting. The keyhole-like recess and the extension recess are each made from the start and the locking bolt is also installed on request. This additional installation is usually carried out before the fitting is attached to the window, but can also be carried out subsequently, that is if the fitting is already attached to the window.

Equipping the locking bolt with a hammer head, which engages behind the drive rod, is an axially positive and consequently very load-bearing connection of the locking bolt to the drive rod. Such a locking bolt or its corresponding attachment to the drive rod is consequently particularly important for locking bolts that are axially stressed. Such axial stresses occur particularly in locking bolts with a mushroom-shaped locking head. Here, mushroom-shaped is understood to mean any configuration with which, when the locking bolt is included in the closed position, a fitting part fixed on the other frame is reached behind. This type of grip is required, for example, for security fittings. Reaching behind prevents two mutually adjacent parallel frame bars from being pushed apart and thus the locking engagement being released. The axially strong connection caused by the hammer head of the locking bolt according to the invention with the drive rod is able to withstand the forces usually occurring in such attempts to break open, in contrast to the usual riveting and screwing of the locking bolt on the drive rod.

The extension recess of the longitudinal slot of the faceplate advantageously has its locking diameter close to the rotational position of the crossbar aligned in the direction of the longitudinal slot. As a result, the transverse web immediately comes into its final, adjustable position after the rest position has been overcome. There is no further twisting, which stresses the material, and there is a good positional securing of the locking bolt or the crossbar in the installed position against turning back.

In all cases, the locking diameter will lead to an expansion or spreading of the faceplate or the faceplate material, possibly combined with material deformation and removal. These are used to ensure that the locking bolt sits securely in the drive rod. After the locking diameter has been overcome, the locking bolt sits somewhat off-center to the extension recess of the longitudinal slot of the faceplate. In this sense, it is expedient that the widening recess of the longitudinal slot of the faceplate has a flattening which penetrates the crossbar when it is rotated into the longitudinal slot.

Another measure to achieve a secure fit of the locking bolt in the longitudinal slot of the faceplate is that the axis of the untwisted locking bolt is offset by means of the drive rod relative to the center of the extension recess of the longitudinal slot of the faceplate to the longitudinal slot. This measure can also be used to make the flattening of the transverse web penetrating into the longitudinal slot somewhat less pronounced, so that in this area there is less material stress or a more uniform distribution of the stresses on the two ends of the cross web.

In this sense, it can also be advantageous that the extension recess of the longitudinal slot of the faceplate rail in its transition region to the longitudinal slot has a hook-like projection reducing the locking diameter.

In order to prevent incorrect operation or incorrect adjustment of the locking bolt or damage to the fitting, the latter is designed in such a way that the extension recess of the longitudinal slot of the faceplate in a transition region to the longitudinal slot prevents the undistorted locking bolt from rotating in the direction of rotation that does not lead beyond the locking diameter having.

In order to adapt the locking bolt or its crosspiece and the extension recess of the longitudinal slot of the faceplate to the rotary adjustment, the crosspiece has rounded ends in the twist plane of the adjustment bolt and the extension recess of the longitudinal slot of the faceplate is rounded outside the area of its locking diameter.

The above-mentioned object is also achieved in a locking fitting for windows, doors or the like, with a locking slot passing through a longitudinal slot of a faceplate and with a mushroom-shaped locking head laterally overlapping, which is fastened in an adjustable manner to an adjustable drive rod, in that the locking bolt the drive rod engages through a keyhole-like recess with a hammer head and has a crossbar to be arranged in an extension recess of the longitudinal slot of the faceplate, and that the extension recess has an insert which prevents the locking bolt attached to the drive rod from rotating.

This design of the fitting is based on the knowledge that the extension recess of the longitudinal slot to make the faceplate so large that there is no need for a latching connection that stresses the material and there is space for the insert which closes the extension recess of the longitudinal slot of the faceplate so that it is impossible to remove the locking bolt or pull it out axially without first removing the insert. Unintentional axial pulling out of the locking bolt from the drive rod is not possible because the locking bolt is held in the drive rod by its hammer head. The insert therefore does not have to bear any stress on the locking bolt.

The insert is expediently an expansion piece jammed in the expansion recess of the longitudinal slot of the faceplate. In order to create enough space for a sufficiently large design of the expansion piece and to prevent unwanted rotation, the extension recess of the longitudinal slot of the faceplate is oval in the slot direction. The insert has overlapping projections that cling to the edges of the faceplate, which ensure a sufficiently firm fit in the faceplate.

The above-mentioned object is also achieved in a locking fitting for windows, doors or the like, with a locking bolt passing through a longitudinal slot of a faceplate and laterally overlapping with a mushroom-shaped locking head in particular, which is rotatably attached to an adjustable drive rod, in that the locking bolt the drive rod engages through a keyhole-like recess with a hammer head and has a crossbar to be arranged in an extension recess of the longitudinal slot of the faceplate, and that the extension recess of the longitudinal slot of the faceplate at least is partially arranged outside the adjustment path of the drive rod required for normal operation of the fitting.

In this configuration of the locking fitting, too, material stress by overcoming a latching is avoided. A loosening of the locking bolt or its assembly with the faceplate or the drive rod takes place when the fitting is removed, so that the overtravel which is required for normal movement of the fitting can be used, which is available for relative movements between the drive rod and the faceplate.

• Fig. 1 eine auseinandergezogen dargestellte Abbildung eines ersten Ausführungsbeispiels eines Ver­riegelungsbeschlags,
• Fig. 2 einen Querschnitt des Beschlags der Fig. 1,
• Fig. 3 einen Längsschnitt des Beschlags der Fig. 1,
• Fig. 4 eine Untersicht des Beschlags der Fig. 1,
• Fig. 5 eine Ansicht der Treibstange im Bereich einer schlüssellochartigen Ausnehmung,
• Fig. 6 eine Ansicht einer Stulpschiene im Bereich einer Erweiterungsausnehmung,
• Fig. 7a bis f mehrere Positionen eines Querstegs eines Verriegelungsbolzens in einer Erweiterungsaus­nehmung des Längsschlitzes einer Stulpschiene beim Verdrehen des Verriegelungsbolzens aus einer Einsteckstellung in eine Endstellung, und darunter die zugehörigen Stellungen des Hammer­kopfes des Verriegelungsbolzens,
• Fig. 8, 9 den Fig. 7a bis f entsprechende Darstellungen bei unterschiedlicher Ausbildung der Erweiterungs­ausnehmung des Längsschlitzes der Stulpschiene,
• Fig. 10 eine weitere Ausführungsform der Erfindung in einer Aufsicht auf eine Stulpschiene mit ge­schnittenem Verriegelungsbolzen,
• Fig. 11 einen Querschnitt des Beschlags der Fig. 10 und
• Fig. 12 einen Längsschnitt dieses Beschlags,
• Fig. 13 eine dritte Ausführungsform des Beschlages in einer teilweise geschnittenen Seitenansicht,
• Fig. 14 eine Aufsicht auf die Stulpschiene des Be­schlages der Fig. 13,
• Fig. 15 eine Aufsicht auf die Treibstange des Be­schlages der Fig. 13 und
• Fig. 16 einen Querschnitt durch den Beschlag der Fig. 13.

The invention is explained with reference to exemplary embodiments shown in the drawing. It shows:

• 1 is an exploded illustration of a first embodiment of a locking fitting,
• 2 shows a cross section of the fitting of FIG. 1,
• 3 shows a longitudinal section of the fitting of FIG. 1,
• 4 is a bottom view of the fitting of FIG. 1,
• 5 is a view of the drive rod in the area of a keyhole-like recess,
• 6 is a view of a faceplate in the area of an extension recess,
• 7a to f several positions of a crossbar of a locking bolt in an expansion recess of the longitudinal slot of a faceplate when turning the locking bolt from an insertion position into an end position, and below the associated positions of the hammer head of the locking bolt,
• 8, 9 representations corresponding to FIGS. 7a to f with different designs of the extension recess of the longitudinal slot of the faceplate,
• 10 shows a further embodiment of the invention in a plan view of a faceplate with a cut locking bolt,
• 11 shows a cross section of the fitting of FIGS. 10 and
• 12 is a longitudinal section of this fitting,
• 13 shows a third embodiment of the fitting in a partially sectioned side view,
• 14 is a plan view of the faceplate of the fitting of FIG. 13,
• 15 is a plan view of the drive rod of the fitting of FIGS. 13 and
• 16 shows a cross section through the fitting of FIG. 13.

The fitting consists essentially of a locking bolt 10, a drive rod 11 and a faceplate 16. The locking bolt 10 has a bolt shaft 28 with a bolt head 26 which projects transversely to the axis 18 of the locking bolt 10 over the bolt shaft 28 and is therefore mushroom-shaped to to be able to reach behind fitting parts located on another frame rail. The required rotational adjustment of the locking bolt 10 takes place with the aid of mutually opposing parallel key engagement surfaces 27. Furthermore, the locking bolt 10 has at the other end of its bolt shank 28 a collar 30, the diameter of which is larger than the width of a longitudinal slot 15 of the faceplate 16. The collar 30 supports thus on the surface of the faceplate 16 and thus determines the axial extent of the locking bolt 10 from the faceplate to the frame rail.

The section 31 of the locking bolt 10 extending from the collar 30 opposite the bolt shank 28 has, arranged in this order one behind the other, a transverse web 17, an axial part 32 and a hammer head 13. The transverse web 17 is as long as the diameter of the collar 30 and has a width which is slightly less than the width of the longitudinal slot 15. The axial part 32 has an axial extent which corresponds approximately to the thickness of the drive rod 11. This has a keyhole-like recess 12, cf. Fig. 5, through which the hammer head 13 can be inserted so that the axial part 32 comes to lie rotatably in the keyhole-like recess 12 of the drive rod 11.

The locking bolt 10 is in one piece and, for example, a steel part.

The longitudinal slot 15 of the faceplate 16 has an extension recess 14 with a locking diameter 33 determined by shaping, which is indicated schematically by dashed lines in FIG. 6. This locking diameter 33 is somewhat shorter than the crosspiece 17 is long. This is achieved by a flattening 19, which thus narrows the expansion recess 14 so that the crossbar 17 can no longer be rotated without resistance. Such a resistance-free rotary adjustment is only possible where the cross bar 17 is rounded at its ends 34 as well as the expansion recess 14. The flattened portion 19 affects its rounding, so that the cross bar 17 runs up at one end 34 onto the flattened portion 19 and moves with it supports its other end 34, for example on the transition region 35.

The connection bolt 10 is assembled with the faceplate 16 and the drive rod 11 by first inserting the hammer head 13 through the extension recess 14 and the keyhole-like recess 12 until the collar 30 rests on the faceplate 16. Then the bolt 10 is rotated so that the hammer head 13 engages behind the drive rod 11, cf. Fig. 2, 4. At this rotation of the extension recess 14 ge formed locking diameter 33 overcome, as can be seen in detail from FIGS. 7a to 7f. In particular from FIGS. 7c, d it can be seen that one end 34 of the transverse web 17 deformingly engages the flat 19, so that a strong resistance to rotation must be overcome in order to bring the transverse web 17 into its installation position shown in FIG. 7f. Then the hammer head 13 engages behind the drive rod 11, as shown in Fig. 7f below. 7f also shows that the axis 18 of the locking bolt 10 is offset from the longitudinal slot 15 or from the center 20 of the extension recess 14, so that there is a more secure fit of the crossbar 17 in the longitudinal slot 15. A turning back of the crossbar 17 would only be possible by violently overcoming the resistance that the transition region 35 offers a turning back.

In order to influence the latching diameter 33 or to shift the material stress evenly onto the ends 34 of the crosspiece 17, the axis 18 of the non-twisted locking bolt 10 is offset in the direction of the longitudinal slot 15 in relation to the center 20 of the extension recess 14, as shown in FIG. 8 on the left . This is achieved by appropriate positioning of the drive rod 11 or the recess 12 and, as shown in FIG. 8 on the right, leads to an even greater displacement of the locking bolt 20 towards the longitudinal slot 15 when the crossbar 17 is supported on the flattened portion 19. Correspondingly, the shape of the flattening can also be coordinated and there is a far-reaching inclusion of the crossbar 17 in the longitudinal slot 15.

Fig. 9 shows that the extension recess 14 in its transition region 35 to the longitudinal slot 15 has a hook-like projection 21 which reduces the locking diameter. This also allows a safe and deep engagement of the relevant end 34 of the crossbar 17 in the Longitudinal slot 15 can be achieved in connection with the flattening 19, as the right illustration of FIG. 9 shows.

In the exemplary embodiments described so far, with the exception of that of FIG. 8, the expansion recesses 14 each have a projection 22 in their transition area opposite the locking diameter, which adjusts the locking bolt 10 in the opposite direction of rotation, that is to say in a direction of rotation not leading over the locking diameter 33 prevented, so that incorrect installation or removal are avoided.

In the embodiment of FIGS. 10 to 12, the extension recess 14 is designed as an oval, which is arranged longitudinally in the direction of the longitudinal slot 15. The oval is so large that the crosspiece 17 of the locking bolt 10 can be rotated therein without being hindered by the edges of the extension recess 14. As a result, the assembly process is such that the locking bolt 10 is inserted with its hammer head 13 through the extension recess 14 of the longitudinal slot 15 of the faceplate 16 and through the keyhole-like recess 12 of the drive rod 11 and rotated without rotation resistance, so that the crossbar 17 with the drive rod 11 in the longitudinal slot 15 can be moved. An insert 23 is then inserted, which is approximately U-shaped, so that the crosspiece 17 can be adjusted between the legs of the U-shaped insert 23, as shown in FIG. 10. A rotation of the locking bolt 10 is then no longer possible because the insert part is non-rotatably stuck in the oval extension recess 14.

The insert 23 is an expansion piece which is clamped in the extension recess 14 of the longitudinal slot 15 of the faceplate 16. Such a deadlock is sufficient regularly to ensure the required tight fit of the insert 23. However, it is possible to provide the insert part 23 with projections 25 which overlap the edges so that the insert part 23 can cling to the edges 24 of the faceplate 16. The insert 23 is made of plastic, for example.

13 to 16 show an embodiment of the invention in which the locking bolt 10 is designed as in the previous embodiments.

Deviating from this, the extension recess 14 is designed, which has a conventional circular or bore-shaped shape. As a result, the crossbar 17 can be rotated without obstruction by the faceplate 16 after it has been inserted with its hammer head 13 through the keyhole-like recess 12 of the drive rod 11. So that removal of the locking bolt 10 by the extension recess 14 after turning back is prevented, the drive rod 11 assumes a central position with the extension recess 14 only when it has been adjusted from its working stroke required for the usual closing and opening adjustments by an overstroke . This is possible, for example, before fitting the hardware. When the locking fitting is mounted, the cross bar 17 or its locking bolt 10 can only reach the position shown at the bottom right in FIG. 14, that is to say not in the specified mounting position. Accordingly, also according to FIG. 15, the hammer head 13 only comes into the position 36, in which it obviously cannot be pulled out of the keyhole-like recess 12, even if it were rotated through 90 °.

Claims (13)

1. Locking fitting for windows, doors or the like. With a longitudinal slot (15) of a faceplate (16) passing through and with a mushroom-shaped locking head (26) laterally overlapping locking bolt (10) which is rotatably adjustable on an adjustable drive rod (11) is fastened, characterized in that the locking bolt (10) engages behind the drive rod (11) through a keyhole-like recess (12) with a hammer head (13) and one to be arranged in an extension recess (14) of the longitudinal slot (15) of the faceplate (16) Has cross bar (17), and that the extension recess (14) has a locking diameter (33) which can be overcome by the cross bar (17) when the locking bolt (10) is rotated. 2. Locking fitting according to claim 1, characterized in that the extension recess (14) of the longitudinal slot (15) of the faceplate (16) has its locking diameter (33) close to the rotational position of the transverse web (17) aligned in the direction of the longitudinal slot (15). 3. Locking fitting according to claim 1 or 2, characterized in that the extension recess (14) of the longitudinal slot (15) of the face plate (16) has a cross bar (17) when it is turned into the longitudinal slot (15) penetrating flattening (19). 4. Locking fitting according to one of claims 1 to 3, characterized in that the axis (18) of the non-rotated locking bolt (10) by means of the drive rod (11) relative to the center (20) of the extension recess (14) of the longitudinal slot (15) of the faceplate (16) is offset towards the longitudinal slot (15). 5. Locking fitting according to one of claims 1 to 4, characterized in that the extension recess (14) of the longitudinal slot (15) of the face plate (16) in its transition region (35) to the longitudinal slot (15) a locking diameter (33) reducing hook-like projection (21). 6. Locking fitting according to one of claims 1 to 5, characterized in that the extension recess (14) of the longitudinal slot (15) of the faceplate (16) in a transition region to the longitudinal slot (15) a twist of the undistorted locking bolt (10) in not has the projection (22) guiding the direction of rotation preventing projection. 7. Locking fitting according to one of claims 1 to 6, characterized in that the transverse web (17) in the rotational plane of the adjusting bolt (10) has rounded ends (34), and that the extension recess (14) of the longitudinal slot (15) of the faceplate ( 16) is rounded off outside the area of its catch diameter (33). 8. Locking fitting according to one of claims 1 to 7, characterized in that the locking bolt (10) on its locking head (26) has key engagement surfaces (27). 9.Locking fitting for windows, doors or the like, with a longitudinal slot penetrating a faceplate and with a mushroom-shaped locking head laterally overlapping locking bolt which is rotatably attached to an adjustable drive rod, characterized in that the locking bolt (10) the drive rod ( 11) reaches through a keyhole-like recess (12) with a hammer head (13) and has a crossbar (17) to be arranged in an extension recess (14) of the longitudinal slot (15) of the faceplate (16), and that the extension recess (14) is a Rotary adjustment of the locking bolt (10) fastened to the drive rod (11) has an insert (23). 10. Locking fitting according to claim 9, characterized in that the insert (23) in the extension recess (14) of the longitudinal slot (15) of the faceplate (16) is clamped expansion piece. 11. Locking fitting according to claim 9 or 10, characterized in that the extension recess (14) of the longitudinal slot (15) of the face plate (16) is oval in the slot direction. 12. Locking fitting according to one of claims 9 to 12, characterized in that the insert part (23) overlapping edges, on the edges (24) of the face plate (16) has claws (25). 13. Locking fitting for windows, doors or the like, with a traversing through a longitudinal slot of a faceplate and with a mushroom-shaped locking head laterally overlapping gelungsbolzen which is rotatably attached to an adjustable drive rod, characterized in that the locking bolt (10) engages behind the drive rod (11) through a keyhole-like recess (12) with a hammer head (13) and one in an extension recess (14) of the longitudinal slot ( 15) of the faceplate (16) to be arranged crosspiece (17), and that the extension recess (14) of the longitudinal slot (15) of the faceplate (16) is at least partially arranged outside the working stroke of the drive rod (11) required for normal operation of the fitting.

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