EP3536885B1 - Drive for a leaf of a window or the like - Google Patents

Description

The invention relates to a drive for a sash of a window or the like with a drive unit for moving the sash relative to a fixed frame by means of a drive element, wherein the drive unit can be attached to the sash or the frame via a bracket by inserting bolts arranged on the drive unit in the Engage holders assigned to the holder.

Drives of the type mentioned are generally known and can be designed, for example, as a chain drive, in which a chain is provided as the drive element, which, depending on whether the drive unit is attached to the sash or frame, to open and close the sash with a on the frame or . The wing bracket arranged on the wing cooperates.

There are also already known drives of the type mentioned in which the drive unit is hung in brackets via a fixed hanging bolt on one end and a second, spring-loaded, push-button-like hanging bolt on the other end, for which the spring-loaded, push-button-like hanging bolt must be pressed briefly to hang it in, before it can snap into the console concerned

EP 2 634 342 A1 discloses a drive with a spring-loaded suspension bolt.

In the case of the previously known drives of the last-mentioned type, however, it has been shown in practice that the spring-loaded, push-button-like suspension bolt can slowly and unintentionally be pushed in so far that the drive is removed from the console due to axial forces that can arise during operation of the drive solves, which brings with it the danger that the drive and window sash can fall and people can be injured.

The invention is based on the object of specifying a drive of the type mentioned at the outset, in which the aforementioned disadvantages are eliminated. With the simplest and fastest possible assembly of the drive, a more reliable, more secure attachment of the drive unit to the sash or frame should be ensured.

According to the invention, this object is achieved by a drive with the features of claim 1. Preferred embodiments of the drive according to the invention emerge from the subclaims, the present description and the drawing.

The drive according to the invention for a sash of a window or the like comprises a drive unit for moving the sash relative to a fixed frame by means of a drive element. The drive unit can be attached to the sash or the frame by means of a bracket, in that bolts arranged on the drive unit engage in receptacles assigned to the bracket. At least one bolt is provided as a push-button-like bolt that is resiliently loaded into its extended position. The spring-loaded push-button-like bolt is assigned locking means, which can be adjusted between a release position in which the spring-loaded push-button-like bolt can be pushed axially out of its extended position into the drive unit against the spring force, and a locking position in which the spring-loaded push-button-like bolt is in its extended position is blocked.

Since the drive unit is provided with at least one push-button-like bolt that is resiliently loaded into its extended position, the drive can be installed relatively easily and quickly. The locking means associated with the spring-loaded pushbutton-like bolt also ensures that the drive unit can be fastened more reliably and securely to the sash or frame, so that the drives known so far can also be attached to the drive unit provided spring-loaded push-button-like bolt existing risk of the window sash falling and injuring people is eliminated.

The locking means preferably comprise a locking part that is embedded in the spring-loaded push-button-like bolt and rotatable relative to it in its circumferential direction, which is rotatable between a release position in which the spring-loaded push-button-like bolt is released and can be pressed into the drive unit, and a blocking position in which the spring-loaded one Push-button-like bolt mechanically blocked in its extended position, that is, an axial displacement is prevented.

Since the locking means are at least partially embedded in the spring-loaded pushbutton-like bolt, the drive can be kept relatively compact overall.

According to an expedient practical embodiment of the drive according to the invention, the spring-loaded push-button-like bolt is mounted in an end cap of the drive element and the rotatable locking part is supported in its blocking position on the one hand on the spring-loaded push-button-like bolt and on the other hand on the end cap.

When the locking part occupies its blocking position, the spring-loaded pushbutton-like bolt is thus axially fixed with respect to the relevant end cap of the drive element.

The rotatable locking part is preferably provided with a radial extension by means of which it is axially supported in its blocking position on the end cap.

According to a preferred practical embodiment of the drive according to the invention, the rotatable locking part comprises a hollow base body into which one Spring unit is used, which is supported on the one hand in the hollow base body of the locking part and on the other hand on the end cap and through which the push-button-like bolt is resiliently acted upon via the locking part.

The rotatable locking part can thus with its hollow base body in the pushbutton-like bolt and the spring unit acting on the pushbutton-like bolt can be at least partially accommodated in the hollow base body of the rotatable locking part, so that the drive is kept relatively compact overall.

The locking part is expediently rotatable for the transfer from its release position into its blocking position and vice versa at least substantially by 90 ° relative to the spring-loaded pushbutton-like bolt.

It is particularly advantageous if the locking part is provided with a receptacle for a screwdriver or the like, accessible from the outer end face of the spring-loaded pushbutton-like bolt, via which the locking part can be rotated.

The movement of the locking part and thus its transfer between its release position and its blocking position and vice versa can advantageously be controlled by appropriate guide tracks in the end cap.

The locking part can preferably be latched to the end cap in its blocking position.

It is thus ensured that the locking part does not rotate unintentionally, for example due to vibrations.

According to a preferred alternative embodiment of the drive according to the invention, the locking means comprise a spring-loaded push button Bolt arranged locking hook, which is provided with locking lugs, which can be spread radially outward via a spring-loaded locking button in order to mechanically block the spring-loaded push-button-like bolt in its extended position, and by pressing the locking button in the spring-loaded push-button-like bolt against the spring force to release the Spring-loaded push-button-like bolt can be released.

Since the locking hook provided with the locking lugs is arranged in the spring-loaded push-button-like bolt, the drive is again kept relatively compact overall.

The spring-loaded locking button is expediently accessible from the outer end face of the spring-loaded push-button-like bolt.

Preferably, the locking lugs of the locking hook, which are spread radially outward for the mechanical blocking of the spring-loaded, pushbutton-like bolt, are axially supported on an end cap of the drive element.

It is particularly advantageous if the locking lugs of the locking hook can be moved into their release position when the locking button is pressed by a ring spring element such as, in particular, a pretensioned O-ring or the like.

The mechanical blocking of the spring-loaded, push-button-like bolt in its extended position is thus implemented in a relatively simple and correspondingly reliable and safe manner.

According to a preferred practical embodiment of the drive according to the invention, the latch button is supported with the push-button-like bolt via a spring unit supported on the one hand on the end cap and on the other hand in the latch button held in engagement, by means of which the push-button-like bolt is also acted upon resiliently via the locking button.

The drive can thus be handled in a simple manner while the structure is kept relatively compact. If the locking button is pressed, the locking lugs are pulled inwards, for example by means of a ring spring element, with which they come free from the end cap, for example by disengaging from recesses in this end cap, whereupon the axial movement of the push-button-like bolt is released. The push-button-like bolt can then be pressed into the holder for assembly.

Appropriately, the locking hook comprises two radially opposite locking lugs which can be expanded radially outward via the spring-loaded locking button.

Reliable locking of the pushbutton-like bolt in its extended position is thus possible with a relatively simple structure.

The drive unit can be provided, for example, with a fixed suspension bolt on its end face opposite the end face with the spring-loaded pushbutton-like bolt. In this case, the drive unit can first be hooked into the bracket with the fixed suspension bolt on one side before the spring-loaded push-button-like bolt on the opposite end is pressed briefly to hook it into the bracket before it can snap into the bracket.

The holder can, for example, comprise two brackets arranged at a distance from one another or can also be made in one piece.

In the variant with the rotatable locking part, the movement of the locking part and thus its locking and unlocking can be implemented in particular by means of corresponding guide tracks in the end cap. The rotation of the locking part can be effected by means of a screwdriver or the like. The additional latching function of the locking part in the locked state can prevent the locking part from rotating unintentionally, for example due to vibrations.

In the variant with the locking hook, to hang the spring-loaded, push-button-like bolt in the holder or the console concerned, first press the locking button so that the locking lugs of the locking hook are pulled inwards, for example by the ring spring element, and come free from the end cap, by disengaging, for example, from recesses in the end cap and releasing the axial movement of the push-button-like bolt. The push-button-like bolt can then be pressed into the drive unit in order to mount the drive unit in the holder or the relevant bracket, whereupon it can snap into the relevant receptacle of the bracket or the relevant bracket. As soon as the pushbutton-like bolt is released, the sequence of movements proceeds in reverse order. The push-button-like bolt is pressed out of the end cap by the relevant spring unit. By means of the rotatable locking part or the locking lugs of the locking hook, the push-button-like bolt is blocked or locked again in its extended position, i.e. prevented from being axially displaced from this extended position.

To spread the locking lugs of the locking hook apart, the locking button can be provided with a conical bevel, for example.

Fig. 1a bis 1c

eine schematische Darstellung des Grundprinzips der Montage eines Kettenantriebs mit einem an der Antriebseinheit vorgesehenen federbeaufschlagten druckknopfartigen Bolzen,

Fig. 2

eine schematische perspektivische Darstellung des Riegelteils einer beispielhaften ersten Ausführungsform eines erfindungsgemäßen Antriebs mit ein drehbares Riegelteil umfassenden Sperrmitteln,

Fig. 3

eine schematische perspektivische Ansicht des Riegelteils gemäß Fig. 1 mit zugeordneter Federeinheit,

Fig. 4

eine schematische perspektivische Ansicht des druckknopfartigen Bolzens mit in den Bolzen eingesetztem Riegelteil und Federeinheit,

Fig. 5

eine mit der Fig. 4 vergleichbare Ansicht des druckknopfartigen Bolzens mit in den Bolzen eingesetztem Riegelteil und Federeinheit, wobei das Riegelteil jedoch um 90° um seine Achse gedreht ist,

Fig. 6

eine schematische perspektivische Teildarstellung einer Endkappe der Antriebseinheit mit in dieser gelagertem federbeaufschlagtem druckknopfartigem Bolzen der ersten beispielhaften Ausführungsform des erfindungsgemäßen Antriebs,

Fig. 7

eine schematische perspektivische Teildarstellung der Endkappe gemäß Fig. 6 ohne federbeaufschlagten druckknopfartigen Bolzen,

Fig. 8

eine weitere schematische perspektivische Ansicht des druckknopfartigen Bolzens mit in den Bolzen eingesetztem Riegelteil und Federeinheit,

Fig. 9

eine schematische Darstellung des Riegelhakens einer weiteren beispielhaften Ausführungsform des erfindungsgemäßen Antriebs mit einen Riegelhaken umfassenden Sperrmitteln,

Fig. 10

eine schematische Darstellung des Riegelhakens gemäß Fig. 9 mit zugeordneter Riegeltaste,

Fig. 11

eine schematische Darstellung des Riegelhakens gemäß Fig. 9 mit zugeordneter Riegeltaste und Federeinheit,

Fig. 12

eine schematische Darstellung des Riegelhakens gemäß Fig. 9 mit zugeordneter Riegeltaste, Federeinheit und RingFederelement,

Fig. 13

eine schematische Darstellung des druckknopfartigen Bolzens mit in diesen eingesetztem Riegelhaken und Riegeltaste mit zugeordneter Federeinheit,

Fig. 14

eine schematische geschnittene Teildarstellung einer Endkappe mit in dieser gelagertem federbeaufschlagtem druccknopfartigem Bolzen gemäß der weiteren beispielhaften Ausführungsform des erfindungsgemäßen Antriebs,

Fig. 15

eine mit der Fig. 14 vergleichbare Teildarstellung der Endkappe mit in dieser gelagertem federbeaufschlagtem druccknopfartigem Bolzen gemäß der weiteren beispielhaften Ausführungsform des erfindungsgemäßen Antriebs, wobei ein die Federeinheit durchsetzender, sich in die Riegeltaste erstreckender Zentrierstift und eine diesem zugeordnete Deckelplatte vorgesehen sind,

Fig. 16

eine schematische geschnittene Teilansicht der Endkappe mit in dieser gelagertem druckknopfartigem Bolzen der weiteren beispielhaften Ausführungsform des erfindungsgemäßen Antriebs, wobei der Bolzen in seiner ausgefahrenen Position verriegelt ist,

Fig. 17

eine mit der Fig. 16 vergleichbare Teilansicht der Endkappe mit in dieser gelagertem druckknopfartigem Bolzen der weiteren beispielhaften Ausführungsform des erfindungsgemäßen Antriebs, wobei die Riegeltaste jedoch bereits gedrückt und der Bolzen entsprechend freigegeben ist,

Fig. 18

eine mit der Fig. 17 vergleichbare Teilansicht der Endkappe mit in dieser gelagertem druckknopfartigen Bolzen der weiteren beispielhaften Ausführungsform des erfindungsgemäßen Antriebs, wobei der freigegebene druckknopfartige Bolzen für eine Montage des Antriebs in der Halterung gedrückt ist,

Fig. 19

eine schematische perspektivische Darstellung der Endkappe der weiteren beispielhaften Ausführungsform des erfindungsgemäßen Antriebs mit in dieser gelagertem druccknopfartigem Bolzen, und

Fig. 20

eine schematische Darstellung von einzelnen Bauelementen der weiteren beispielhaften Ausführungsform des erfindungsgemäßen Antriebs.

The invention is explained in more detail below on the basis of exemplary embodiments with reference to the drawing; in this show:

Figures 1a to 1c

a schematic representation of the basic principle of the assembly of a chain drive with a spring-loaded push-button-like bolt provided on the drive unit,

Fig. 2

a schematic perspective illustration of the locking part of an exemplary first embodiment of a drive according to the invention with locking means comprising a rotatable locking part,

Fig. 3

a schematic perspective view of the locking part according to Fig. 1 with assigned spring unit,

Fig. 4

a schematic perspective view of the push-button-like bolt with the locking part and spring unit inserted into the bolt,

Fig. 5

one with the Fig. 4 comparable view of the push-button-like bolt with the locking part and spring unit inserted into the bolt, the locking part however being rotated by 90 ° about its axis,

Fig. 6

a schematic perspective partial representation of an end cap of the drive unit with a spring-loaded push-button-like bolt of the first exemplary embodiment of the drive according to the invention mounted in this,

Fig. 7

a schematic perspective partial representation of the end cap according to Fig. 6 without spring-loaded push-button type bolts,

Fig. 8

a further schematic perspective view of the push-button-like bolt with the locking part and spring unit inserted into the bolt,

Fig. 9

a schematic representation of the locking hook of a further exemplary embodiment of the drive according to the invention with locking means comprising a locking hook,

Fig. 10

a schematic representation of the locking hook according to Fig. 9 with assigned bolt button,

Fig. 11

a schematic representation of the locking hook according to Fig. 9 with assigned bolt button and spring unit,

Fig. 12

a schematic representation of the locking hook according to Fig. 9 with assigned bolt button, spring unit and ring spring element,

Fig. 13

a schematic representation of the push-button-like bolt with a locking hook and a locking button with an associated spring unit inserted therein,

Fig. 14

a schematic sectioned partial representation of an end cap with a spring-loaded push-button-like bearing mounted in it Bolt according to the further exemplary embodiment of the drive according to the invention,

Fig. 15

one with the Fig. 14 Comparable partial representation of the end cap with a spring-loaded pushbutton-like bolt mounted in it according to the further exemplary embodiment of the drive according to the invention, a centering pin penetrating the spring unit and extending into the locking button and a cover plate assigned to it being provided,

Fig. 16

a schematic sectional partial view of the end cap with a push-button-like bolt stored in it of the further exemplary embodiment of the drive according to the invention, the bolt being locked in its extended position,

Fig. 17

one with the Fig. 16 Comparable partial view of the end cap with a push-button-like bolt mounted in it of the further exemplary embodiment of the drive according to the invention, but the locking button has already been pressed and the bolt is released accordingly,

Fig. 18

one with the Fig. 17 Comparable partial view of the end cap with a push-button-like bolt stored in it of the further exemplary embodiment of the drive according to the invention, the released push-button-like bolt being pressed for mounting the drive in the holder,

Fig. 19

a schematic perspective illustration of the end cap of the further exemplary embodiment of the drive according to the invention with a pushbutton-like bolt mounted in it, and

Fig. 20

a schematic representation of individual components of the further exemplary embodiment of the drive according to the invention.

The Figures 1a to 1c show in a schematic representation the basic principle of the assembly of a chain drive 10 with a spring-loaded push-button-like bolt 14 provided on the drive unit 12 on a window. For this purpose, it is only necessary to hang a fixed hanging bolt (not shown) on one end of the drive unit 12 side in a first bracket of a holder and to briefly press and hang the second, spring-loaded pushbutton-like bolt 14 provided on the opposite end of the drive unit 12 then snap into a second bracket 16 of the holder.

It shows Fig. 1a the drive unit 12 before hanging in the second bracket 16 with an extended spring-loaded push-button-like bolt 14, while in the illustration according to FIG Figure 1b the spring-loaded push-button-like bolt 14 is pressed in. In the representation according to Figure 1c the drive unit 12 with the spring-loaded pushbutton-like bolt 14 snapped into the second bracket 16 is completely suspended in the holder or its two brackets.

The spring-loaded, push-button-like bolt 14 can be mounted in an end cap 18 of the drive unit 12.

In practice, it has now been shown that with the previous drives 10 of this type, axial forces can arise during operation of the drive 10, by means of which the spring-loaded push-button-like bolt 14 is slowly and unintentionally pushed in so far that the drive 10 moves away from the console in question 16 solves, which brings with it the risk that the drive 10 and the window sash fall and people are injured.

The Figures 2 to 8 and 9 to 20 show two exemplary alternative embodiments of a safety lock of a drive according to the invention for a sash of a window or the like, with which the aforementioned problems are eliminated and a reliable, secure attachment of the drive unit is ensured with simple and rapid assembly.

The drives according to the invention each again comprise a drive unit for moving the sash relative to a fixed frame by means of a drive element, which can in particular again be a chain. The drive unit can be attached again via a bracket to the sash or the frame, in that bolts arranged on the drive unit engage in the mounts assigned to the bracket, with at least one bolt being provided as a pushbutton-like bolt 20 spring loaded into its extended position. According to the invention, locking means 22 are assigned to the spring-loaded push-button-like bolt 20, which can be adjusted between a release position in which the spring-loaded push-button-like bolt 20 can be pushed axially out of its extended position into the drive unit against the spring force, and a locking position in which the spring-loaded push-button-like bolt 20 blocked in its extended position, ie prevented from being axially displaced from its extended position.

In this case, the locking means 22 comprise according to the in Figures 2 to 8 The illustrated first exemplary embodiment of the drive according to the invention has a locking part 24 embedded in the spring-loaded push-button-like bolt 20, rotatable relative to it in its circumferential direction, which can be rotated between a release position in which the spring-loaded push-button-like bolt 20 is released and can be pressed into the drive unit, and a blocking position is in which the spring-loaded push-button-like bolt 20 is mechanically blocked in its extended position.

The spring-loaded push-button-like bolt 20 is mounted in an end cap 26 of the drive unit. The rotatable locking part 24 is supported in its blocking position on the one hand on the spring-loaded pushbutton-like bolt 20 and on the other hand on the end cap 26.

How best based on the Figures 2 to 5 and it can be seen, the rotatable locking part 24 can be provided with a radial extension 28, by means of which it is axially supported on the end cap 26 in its blocking position.

In addition, the rotatable locking part 24 comprises in the Figures 2 to 8 illustrated embodiment of the drive according to the invention has a hollow base body 30 (cf. in particular the Figs. 2 and 3 ), in which a spring unit 32 (see. In particular Figures 3 to 5 and 8th ), which is supported on the one hand in the hollow base body 30 of the locking part 24 and on the other hand on the end cap 26 and through which the push-button-like bolt 20 is resiliently urged into its extended position via the locking part 24.

How particularly with the Figures 2 to 5 As can be seen, the locking part 24 can be rotatable, for example, at least essentially 90 ° relative to the spring-loaded pushbutton-like bolt 20 for transferring from its release position into its blocking position and vice versa.

How particularly with the Figures 2 to 6 As can be seen, the locking part 24 can be provided with a receptacle 36 for a screwdriver or the like, accessible from the outer end face 34 of the spring-loaded pushbutton-like bolt 20, via which the locking part 24 can be rotated.

The movement of the locking part 24 and thus its transfer between its release position and its blocking position and vice versa can be controlled by corresponding guide tracks 38 in the end cap 26 (cf. Fig. 7 ) be controllable.

The locking part 24 can be latched to the end cap 26 in its blocking position. For this purpose, the locking part 24 can be provided with a locking lug 40 or the like (cf. Fig. 8 ).

In Fig. 2 is provided with the radial extension 28 rotatable locking part 24 without a spring unit and in Fig. 3 shown with an associated spring unit 32.

The Figures 4 and 5 show the push-button-like bolt 20 with the locking part 24 and the spring unit 32 inserted into the bolt 20, the locking part 24 in the illustration according to FIG Fig. 5 compared to the representation according to Fig. 4 is rotated by 90 ° relative to the push-button-like bolt 20.

Fig. 6 shows, in a partial representation, the end cap 26 of the drive unit with a spring-loaded, push-button-like bolt 20 of the first exemplary embodiment of the drive according to the invention mounted in it, while in FIG Fig. 7 in a partial representation, the end cap 26 of this first exemplary embodiment is shown without spring-loaded push-button-like bolts.

The locking part 24, which is embedded in the push-button-like bolt 20 and rotatable by 90 °, can block the axial movement of the push-button-like bolt 20 will. The movement and thereby the locking and unlocking of the locking part 24 can be implemented or controlled by the corresponding guide tracks 38 in the end cap 26. The locking part 24 can be rotated, for example, by means of a screwdriver. The locking of the locking part in the locked state, which is effected for example via the locking lug 40 of the locking part 24, prevents the locking part 24 from rotating unintentionally, for example due to vibrations.

The Figures 9 to 20 show a further exemplary embodiment of the drive according to the invention, in which the locking means 22 comprise a locking hook 42 arranged in the spring-loaded pushbutton-like bolt 20, which is provided with latching lugs 44 which can be spread radially outward via a spring-loaded locking button 46, around the spring-loaded pushbutton-like bolt 20 to mechanically block in its extended position, and can be released by pressing the locking button 46 in the spring-loaded pushbutton-like bolt 20 against the spring force to release the spring-loaded pushbutton-like bolt 20. The spring-loaded locking button 46 is accessible from the outer end face 34 of the spring-loaded push-button-like bolt 20.

The locking lugs 44 of the locking hook 42, which are spread radially outward for the mechanical blocking of the spring-loaded pushbutton-like bolt 20, are axially supported on an end cap 86 'of the drive unit.

How particularly with the Figures 17 and 18 As can be seen, the locking lugs 44 of the locking hook 42 can be moved into their release position by a ring spring element 48 such as, in particular, a pretensioned O-ring or the like, when the locking button 46 is pressed. The locking lugs 44 are released when the locking button 46 is pressed and are released radially by the ring spring element 48 pulled inward, thereby disengaging them from the end cap 26 'by disengaging from corresponding recesses 60 of the end cap 26'.

The locking button 46 can be held in engagement with the pushbutton-like bolt 20 via a spring unit 50 supported on the one hand on the end cap 26 'and on the other hand in the locking button 46, through which the pushbutton-like bolt 20 is also resiliently loaded via the locking button 46.

The one in the Figures 9 to 20 The exemplary embodiment of the drive according to the invention shown in the exemplary embodiment, the locking hook 42 comprises, for example, two radially opposite locking lugs 44 which can be expanded radially outward via the spring-loaded locking button 46.

In Fig. 9 is the latch hook 42 without and in Fig. 10 shown with the associated locking button 46. Fig. 11 12 shows the locking hook 42 with an assigned locking button 46 and a spring unit 50 inserted into it, while the locking hook 42 in the illustration according to FIG. 12 is also assigned the ring spring element 48.

Fig. 13 shows the push-button-like bolt 20 with locking hook 42 and locking button 46 with associated spring unit 50 inserted therein, while in the illustration according to FIG Fig. 14 this push-button-like bolt 20 is mounted in the relevant end cap 26 'of the drive unit.

Fig. 15 shows the push-button-like bolt 20 mounted in the relevant end cap 26 'in one with the Fig. 14 Comparable illustration, with a centering pin 52 penetrating the spring unit 50 and extending into the locking button 46 and a cover plate 54 arranged in the end cap 26 ', through which the centering pin 52 is passed, which at its end passed through the cover plate 54 with a Head 56 is provided with the ceiling plate 54 cooperates to limit the stroke of the locking button 46 axially outward.

Fig. 16 shows a partial view of the end cap 26 'with a pushbutton-like bolt 20 of the further exemplary embodiment of the drive according to the invention stored therein, the bolt 20 being locked in its extended position. Fig. 17 shows one with the Fig. 16 Comparable view of the end cap 26 'with the push-button-like bolt 20 of the further exemplary embodiment of the drive according to the invention stored therein, but the locking button 46 having already been pressed and the bolt 20 released accordingly. The push-button-like bolt 20 can now be pressed into the drive unit or the relevant end cap 26 'to mount the drive unit in the holder or the relevant console.

Fig. 18 shows one with the Fig. 17 Comparable representation of the end cap 26 'with a push-button-like bolt 20 stored in it, the released push-button-like bolt 20 being pressed, however, for the assembly of the drive in the holder or the console concerned.

Fig. 19 shows in a schematic perspective illustration again the end cap 26 'of the further exemplary embodiment of the drive according to the invention with a push-button-like bolt 20 and an associated locking button 46 mounted therein, while in FIG Fig. 20 Again different components of this further exemplary embodiment of the drive according to the invention such as the locking hook 42 with the locking lugs 44, the locking button 46, the ring spring element 48, the centering pin 52 and the spring unit 32 are shown.

In this further exemplary embodiment of the drive according to the invention, the locking hook 42 located in the pushbutton-like bolt 20 with the two radially opposite one another, by means of the spring-loaded Latch button 46 radially outwardly expandable locking lugs 44 of the push-button-like bolt 20 locked against axial movements. The result is a kind of "push-push" system, in which first the locking button 46, which is seated in the middle of the push-button-like bolt 20, is pressed, for example, by 1 to 2 mm, in order to release the push-button-like bolt 20, which can then be pushed in.

In the locked state, the locking lugs 44 of the locking hook 42 are pressed radially outward and locked in the recesses 60 of the end cap 26 ', whereby the axial movement of the pushbutton-like bolt 20 is blocked. This can be brought about, for example, by a conical bevel 58 on the locking button 46, which spreads the spring-loaded locking hook 42 apart. The recesses 60 of the end cap 26 ', into which the latching lugs 44 of the locking hook 42 are pressed in the locked state, are best shown on the basis of FIG Fig. 16 to recognize.

If the locking button 46 is pressed, the locking lugs 44 of the locking hook 42 are pulled radially inward by means of the ring spring element 48 such as a pretensioned O-ring, whereupon they disengage from the recesses 60 of the end cap 26 'and the axial movement of the pushbutton-like bolt 20 release. The push-button-like bolt 20 can then be pressed into the holder or the relevant console for mounting the drive unit (see again Fig. 18 ).

If the locking button 46 is released, the sequence of movements takes place in reverse order. The pushbutton-like bolt 20 is pressed out of the end cap 26 'by the spring unit 50, whereupon the locking lugs 44 of the locking hook 42 snap back into the recesses 60 of the end cap 26' and thus lock the pushbutton-like bolt 20 in its extended position again. As already mentioned, in the two exemplary embodiments of the invention Drive the bracket, for example, comprise two brackets arranged at a distance from one another or also be made in one piece. The drive element of a respective drive according to the invention can in particular be a chain.

In the two exemplary embodiments of the drive according to the invention, a fixed bolt can in particular be provided on the end face opposite the end face of the drive unit provided with the spring-loaded pushbutton-like bolt 20.

List of reference symbols

10

Chain drive

12th

Drive unit

14th

spring-loaded push-button-like bolt

16

Bracket console

18th

End cap

20th

spring-loaded push-button-like bolt

22nd

Locking means

24

Latch part

26th

End cap

26 '

End cap

28

radial approach

30th

hollow body

32

Spring unit

34

outer face

36

Holder for a screwdriver or the like

38

Guideway

40

Locking lug

42

Latch hook

44

Locking lug

46

Latch button

48

Ring spring element

50

Spring unit

52

Centering

54

Cover plate

56

head

58

conical slope

60

Recess

Claims (15)

1. Drive for a leaf of a window or the like, having a drive unit for moving the leaf in relation to a stationary window frame by means of a drive element, wherein the drive unit is able to be attached to the leaf or the window frame by way of a mounting in that pintles which are disposed on the drive unit engage in receptacles that are assigned to the mounting, wherein at least one pintle is provided as a push-button type pintle (20) which in a sprung manner is impinged in the deployed position thereof, characterized in that locking means (22) which are adjustable between a releasing position in which the spring-impinged push-button type pintle (20) is able to be pushed axially out of the deployed position thereof into the drive unit, and a locking position in which the spring-impinged push-button type pintle (20) is locked in the deployed position thereof, are assigned to the spring-impinged push-button type pintle (20).
2. Drive according to Claim 1, characterized in that that the locking means (22) comprise a latch part (24) which is embedded in the spring-impinged push-button type pintle (20) and rotatable relative to said pintle (20) in the circumferential direction of said pintle (20), said latch part (24) being rotatable between a releasing position in which the spring-impinged push-button type pintle (20) is released and able to be pushed into the drive unit, and a locking position in which the spring-impinged push-button type pintle (20) is mechanically locked in the deployed position thereof.
3. Drive according to Claim 2, characterized in that the spring-impinged push-button type pintle (20) is mounted in an end cap (26) of the drive unit, and the rotatable latch part (24) in the locking position thereof is supported on the spring-impinged push-button type pintle (20), on the one hand, and on the end cap (26), on the other hand.
4. Drive according to Claim 3, characterized in that the rotatable latch part (24) is provided with a radial appendage (28) by way of which said latch part (24) in the blocking position thereof is axially supported on the end cap (26).
5. Drive according to Claim 3 or 4, characterized in that the rotatable latch part (24) comprises a hollow main body (30) into which a spring unit (32) which is supported in the hollow main body (30) of the latch part (24), on the one hand, and on the end cap (26), on the other hand, and by way of which the push-button type pintle (20) is also impinged in a sprung manner by way of the latch part (24), is inserted.
6. Drive according to at least one of Claims 2 to 5, characterized in that the latch part (24) for being transferred from the releasing position thereof to the blocking position thereof and vice versa is rotatable by substantially 90° relative to the spring-impinged push-button type pintle (20).
7. Drive according to at least one of Claims 2 to 6, characterized in that the latch part (24) is provided with a receptacle (36) for a screwdriver or the like that is accessible from the outer end side (34) of the spring-impinged push-button type pintle (20), the latch part (24) being rotatable by way of said screwdriver.
8. Drive according to at least one of Claims 3 to 5, characterized in that the movement of the latch part (24) and, on account thereof the transfer of the latter between the releasing position thereof and the blocking position thereof and vice versa, is able to be controlled by corresponding guide tracks (38) in the end cap (26).
9. Drive according to at least one of Claims 3 to 5, characterized in that the latch part (24) in the blocking position thereof is able to be latched to the end cap (26).
10. Drive according to Claim 1, characterized in that the locking means (22) comprise a latch hook (42) which is disposed in the spring-impinged push-button type pintle (20) and is provided with latching cams (44) which by way of a spring-impinged latch button (46) are expandable in a radially outward manner so as to mechanically block the spring-impinged push-button type pintle (20) in the deployed position thereof, and which by pushing the latch button (46) into the spring-impinged push-button type pintle (20) counter to the spring force are able to be released in order to release the spring-impinged push-button type pintle (20).
11. Drive according to Claim 10, characterized in that the spring-impinged latch button (46) is accessible from the outer end side (34) of the spring-impinged push-button type pintle (20).
12. Drive according to Claim 10 or 11, characterized in that the latching cams (44) of the latch hook (42) which for mechanically blocking the spring-impinged push-button type pintle (20) are expanded in a radially outward manner are axially supported on an end cap (26') of the drive unit.
13. Drive according to one of Claims 10 to 12, characterized in that the latching cams (44) of the latch hook (42) in the case of a depressed latch button (46) are able to be transferred to the releasing position thereof by a ring/spring element (48) such as, in particular, a preloaded O-ring or the like.
14. Drive according to one of Claims 10 to 13, characterized in that the latch button (46) is kept in engagement with the push-button type pintle (20) by way of a spring unit (50) that is supported on the end cap (26'), on the one hand, and in the latch button (46), on the other hand, the push-button type pintle (20) also being impinged in a sprung manner by way of the latch button (46) by said spring unit (50).
15. Drive according to one of Claims 10 to 14, characterized in that the latch hook (42) comprises two latching cams (44) which are radially opposite one another and are able to be expanded in a radially outward manner by the spring-impinged latch button (46).

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