EP3725992B1 - Drive - Google Patents

Description

The invention relates to a drive for opening and closing a sash of a window, a door or the like, with a motorized drive unit that can be integrated in the profile of the window or door frame and that, for actuating the window or door sash, has a force transmission element that is rigid on one side, in particular a chain or the like, which is provided at its end which can be connected to the wing with an end piece which can be fixed in a power transmission element block which can be integrated in the wing profile. It also relates to a window, a door or the like with such a drive.

In the case of integrated drives of the type mentioned at the outset, which include, for example, integrated chain drives, both the motorized drive unit and the power transmission element or chain block are integrated in the window or door profile. In such integrated drives, the end piece of the power transmission element is normally fixed not only for motorized opening and closing of the window or door sash, but usually also when the sash is closed in the power transmission element or chain block. However, if the motorized drive unit fails, it is at least difficult, if not impossible, to open the window or the door in order to access the motorized drive unit. The connection between the window or door leaf and the frame must be mechanically detachable from the outside, which in most cases is very cumbersome and involves a relatively large amount of force or even requires partial destruction of the window or door.

the DE 198 58 533 A1 discloses an electromechanical actuating device for a door or window sash with a movement and locking unit which can be fastened on the frame of the door or window sash which can be moved from a closed to an open position and which is preferred for cooperation with an actuating device which can be fastened to an associated window frame a drive chain, is designed to cause the movement of the door or window sash.

the DE 10 2004 031 212 B3 discloses one, with a drive, with a drive motor mounted on the sash or on the frame, which has an actuating element which is mounted in a receiving element which is fixed to the sash or frame, the drive being arranged in a concealed manner between the sash and the frame and wherein the receiving element for the emergency opening of the wing when the wing is closed can be detached from outside the arrangement of the frame or wing.

The invention is based on the object of specifying an integrated drive of the type mentioned in the introduction, in which the disadvantages mentioned above are eliminated. It should be ensured in particular that the connection between the The end piece of the power transmission element and the power transmission element block and thus the connection between the sash and frame in an emergency or in the event of a failure of the motor drive unit can be released manually from the outside with minimal effort in the simplest and most reliable way possible while avoiding damage to the window or door is.

According to the invention, this object is achieved by a drive having the features of claim 1. Preferred embodiments of the drive according to the invention result from the dependent claims, the present description and the drawing.

The drive according to the invention for opening and closing a sash of a window, a door or the like comprises a motorized drive unit which can be integrated into the profile of the window or door frame and which is used to actuate the window or door sash with a force transmission element which is rigid on one side, in particular a chain or the like , cooperates, which is provided at its end that can be connected to the wing with an end piece that can be fixed in a power transmission element block that can be integrated in the wing profile. The end piece of the force transmission element can be fixed in the force transmission element bracket via a snap-in connection and the force transmission element block is designed in such a way that the end piece of the force transmission element can normally be used for motorized opening and closing of the sash as well as when the sash is closed through the snap-in connection in the force transmission element block and the locking connection for emergencies when the wing is closed can be released manually from the outside by applying a pressing force using a tool that can be passed through an opening provided in the wing profile, in particular a screwdriver or the like, to release the end piece of the force transmission element.

Due to this design, it is now possible to manually release the connection between the end piece of the power transmission element and the power transmission element block of an integrated drive for separating the sash and frame in an emergency from the outside in a simple and reliable manner, without running the risk of the window or door is damaged. It is only necessary to exert a pressing force on the latching connection by means of a tool that can be guided through the opening in the wing profile in order to release it.

According to the invention, the locking connection comprises two opposite bolts or the like, each mounted axially displaceably in the force transmission element block, which extend from opposite sides into a receiving area of the force-transmitting element bracket for the end piece of the force-transmitting element, are resiliently preloaded towards one another and can be snapped into an opening in the end-piece of the force-transmitting element from the two opposite sides in order to fix the end piece of the force-transmitting element in the receiving area .

The end piece of the power transmission element can be provided with a continuous opening into which the two bolts can be snapped from opposite sides, or can be provided with a separate opening on opposite sides, into which a bolt can be snapped.

Reliable locking of the end piece of the force transmission element in the force transmission element block is thus not only ensured in a simple manner. In an emergency, it is also possible to easily release the snap-in connection by pulling the spring-biased bolts apart against the spring forces and thus pulling them out of the end piece of the force-transmitting element using the pressing force applied manually from the outside by means of the tool. After the end piece has been removed from the power transmission element block, the bolts automatically return to their original position due to the spring forces acting on them.

The force transmission element block is expediently provided with a release mechanism, via which the spring-biased bolts, which are resiliently biased toward one another, can be pressed apart against the spring forces when a pressing force is applied by means of the tool, in order to release the latching connection and to release the end piece of the force transmission element.

In this case, the release mechanism of the force-transmitting element block includes, according to an advantageous practical embodiment of the drive according to the invention two opposing bearing elements, each mounted axially displaceably in the power transmission element block, resiliently preloaded towards one another and laterally limiting the receiving area, on which one of the two bolts is firmly supported and via which the bolts are resiliently preloaded towards one another.

In order to release the locking connection, the bearing elements, which are resiliently biased towards one another, must be pushed apart against the spring forces acting on them, which means that the two bolts are correspondingly pulled apart in order to release the end piece of the force transmission element.

It is particularly advantageous if the release mechanism comprises an intermediate piece that is arranged between the two bearing elements that are spring-loaded towards one another, can be displaced perpendicularly to the bearing elements and can be acted upon by the tool, which has inclined surfaces that interact with complementary inclined surfaces of the bearing elements, so that when the Intermediate piece by a pressing force applied by means of the tool and an associated displacement of the intermediate piece relative to the bearing elements, the two bearing elements and thus the two bolts to release the locking connection and to release the end piece of the power transmission element can be pressed apart.

As already mentioned above, any other engagement elements can also be provided instead of the bolts or the like.

The result is a simple, reliable release mechanism with which a respective pressing force applied to the intermediate piece by means of the tool causes the two bolts to be pulled apart to release the locking connection and to release the end piece of the force transmission element.

According to an expedient practical embodiment of the drive according to the invention, the two bearing elements are each designed as angles and the bolts are firmly supported on opposing first legs of the angle-like bearing elements, while the intermediate piece is arranged between second legs that are at least substantially perpendicular to the first legs. In this case, the complementary inclined surfaces of the bearing elements interacting with the inclined surfaces of the intermediate piece can be provided on their second legs.

It is also particularly advantageous if the end piece of the force transmission element has inclined surfaces on opposite sides that interact with complementary inclined surfaces of the bolts, so that when the end piece of the force transmission element is inserted into the force transmission element bracket, the two bolts are initially pressed apart against the spring forces acting on them , in order to then snap into the end piece of the power transmission element by the spring forces.

While the bolts are automatically moved towards each other again after the tool has been pulled out after the latching connection has been triggered and the end piece of the force transmission element has been separated from the force transmission element block as a result of the spring forces acting on them, when the end piece of the force transmission element is inserted into the Power transmission element block or a respective closing of the window or the door by the cooperating inclined surfaces of the power transmission element and the bolts against the spring forces acting on them initially pushed apart again. As soon as the end piece of the force transmission element has reached its end position in the force transmission element block, the bolts snap through the ones that act on them Spring forces automatically in the tail, whereby the locking connection between the tail of the power transmission element and the power transmission element block or between the wing and frame is automatically restored.

With the emergency release according to the invention for integrated drives, unlocking is possible without the high expenditure of force previously required and while avoiding the previously given risk of damage to the window or door. For emergency unlocking, a pressing force is only required using a tool such as a simple screwdriver. In addition, the window or the door can simply be pushed shut again due to the interacting inclined surfaces of the bolts and the end piece, which automatically restores the connection between the end piece of the force transmission element and the force transmission element bracket or between the sash and the frame. After the power transmission element or chain connection has been separated, maintenance of the drive and/or opening of the window or door is possible very quickly and without complex assembly. The assembly of the entire system is also simplified. The power transmission element or chain block is inserted, and the end piece of the power transmission element or chain is connected to the power transmission element block or chain block by simply pressing the window or door shut.

The window, door or the like according to the invention is characterized in that it is provided with a drive according to the invention.

Fig. 1

eine schematische Darstellung einer beispielhaften Ausführungsform eines erfindungsgemäßen integrierten Antriebs eines Fensters bei geschlossenem Fenster und mit dem Kraftübertragungselement-Bock verrasteten Bolzen,

Fig. 2

eine schematische Darstellung des Antriebs gemäß Fig. 1 in einer Phase, in der die beiden Bolzen durch die mittels des Werkzeugs aufgebrachte Drückkraft zur Freigabe des Endstücks des Kraftübertragungselements aus dem Kraftübertragungselement-Bock herausgezogen werden,

Fig. 3

eine schematische Darstellung des Antriebs gemäß Fig. 1 in einer Phase, in der die Bolzen nach einer Entnahme des Endstücks des Kraftübertragungselements mit dem Herausziehen des Werkzeugs durch die Federkräfte wieder aufeinander zu in deren Ausgangsstellung bewegt werden, und

Fig. 4

eine schematische Darstellung des Antriebs gemäß Fig. 1 in einer Phase, in der die federbelasteten Bolzen automatisch wieder in den Kraftübertragungselement-Bock eingerastet sind, nachdem sie zuvor infolge der zusammenwirkenden Schrägflächen des Endstücks des Kraftübertragungselements und der Bolzen mit dem Einsetzen des Endstücks entgegen der Federkräfte auseinandergedrückt wurden.

The invention is explained in more detail below using an exemplary embodiment with reference to the drawing; in this show:

1

a schematic representation of an exemplary embodiment of an integrated drive of a window according to the invention with the window closed and the bolt locked with the force transmission element block,

2

a schematic representation of the drive according to FIG 1 in a phase in which the two bolts are pulled out of the power transmission element bracket by the pushing force applied by the tool to release the end piece of the power transmission element,

3

a schematic representation of the drive according to FIG 1 in a phase in which, after the end piece of the force transmission element has been removed, the bolts are moved back towards one another into their starting position by the spring forces when the tool is pulled out, and

4

a schematic representation of the drive according to FIG 1 in a phase in which the spring-loaded bolts are automatically snapped back into the power transmission element block, after having previously been pushed apart against the spring forces as a result of the interacting inclined surfaces of the end piece of the power transmission element and the bolts with the insertion of the end piece.

the Figures 1 to 4 show a schematic representation of an exemplary embodiment of an integrated drive 10 according to the invention for opening and closing a window. In principle, however, such a drive can also be provided for opening and closing a door or the like.

The drive 10 comprises a motorized drive unit that can be integrated in the profile of the window frame, which, to actuate the window sash, interacts with a force transmission element that is rigid on one side, such as a chain or the like, which is provided with an end piece 12 at its end that can be connected to the sash, which is located in a Wing profile integrable power transmission element block 14 can be fixed.

The end piece 12 of the force transmission element can be fixed in the force transmission element bracket 14 via a latching connection 16 and the force transmission element bracket 14 is designed in such a way that the end piece 12 of the force transmission element can normally be used both for motorized opening and closing of the sash and when the sash is closed by the Latch connection 16 can be fixed in the force transmission element block 14 and the latch connection 16 can be released manually from the outside for emergencies when the wing is closed by applying a pressing force F using a tool 18 that can be guided through an opening provided in the wing profile in order to release the end piece 12 of the force transmission element. A screwdriver or the like can be used as the tool 18 , for example.

The locking connection 16 comprises two opposite bolts 20, each mounted axially displaceably in the force transmission element bracket 14, which extend from opposite sides into a receiving area 22 of the force transmission element bracket 14 for the end piece 12 of the force transmission element, resiliently biased towards one another and for Fixing the end piece 12 of the force transmission element in the receiving area 22 from the two opposite sides in an opening 24 of the end piece 12 of the force transmission element can be latched.

The end piece 12 of the power transmission element can be provided with a through opening 24 into which the two bolts 20 of opposite Ends are snapped forth. In principle, however, such an embodiment is also conceivable in which the end piece 12 of the force transmission element is provided on opposite sides with a separate opening 24 in each of which a bolt 20 can be latched.

The force transmission element block 14 is provided with a release mechanism 26, via which, with a respective application of a pressing force F applied by means of the tool 18, the spring-biased bolts 20 towards each other to release the latching connection 16 and to release the end piece 12 of the force transmission element against the spring forces can be pressed apart.

In the present case, the release mechanism 26 of the force-transmitting element block 14 comprises two opposing bearing elements 28, each mounted axially displaceably in the force-transmitting element block 14, resiliently preloaded towards one another and laterally delimiting the receiving area 22, on each of which one of the two bolts 20 is firmly supported is and via which the bolts 20 are resiliently biased toward one another.

As can be seen from the figures, the release mechanism 26 in the present case also comprises an intermediate piece 30 which is arranged between the two bearing elements 28 which are resiliently biased towards one another, can be displaced perpendicularly to the bearing elements 28 and can be acted upon by the tool 18 and which interacts with complementary inclined surfaces 32 of the bearing elements 28 Has inclined surfaces 34, which cause the two bearing elements 28 and thus the two bolts 20 to loosen the Locking connection 16 and to release the end piece 12 of the power transmission element are pressed apart.

In the present exemplary embodiment, the two bearing elements 28 are each designed as angles and the bolts 20 are firmly supported on opposing first legs 28' of the angle-like bearing elements 28, while the intermediate piece 30 between the first legs 28' at least substantially perpendicular second legs 28" of the bearing elements 28. The inclined surfaces 32 of the bearing elements 28 which interact with the complementary inclined surfaces 34 of the intermediate bearing piece 30 are provided on their second legs 28".

The end piece 12 of the force transmission element has on opposite sides with complementary inclined surfaces 36 of the bolts 20 interacting inclined surfaces 38, so that when the end piece 12 of the force transmission element is inserted into the force transmission element block 14, the two bolts 20 are initially pressed apart against the spring forces acting on them be, in order to then snap into the end piece 12 of the force transmission element by the spring forces.

1 shows the integrated drive 10 with the window closed and the bolt 20 locked with the power transmission element block 14. In the illustration according to FIG 2 the two bolts 20 are pulled out of the force-transmitting element block 14 by the pressing force F applied by means of the tool 18 in order to release the end piece 12 of the force-transmitting element. 3 shows the integrated drive 10 in a phase in which, after the end piece 12 of the force transmission element has been removed, the bolts 20 are moved back towards one another into their starting position by the spring forces when the tool 18 is pulled out. In the representation according to 4 are the spring-loaded bolt 20 automatically snapped back into the power transmission element block 14, after previously due to the cooperating inclined surfaces 38, 36 of the end piece 12 of the power transmission element and the bolt 20 with the insertion of the end piece 12 were pushed apart against the spring forces.

With the drive 10 according to the invention, the connection between the end piece 12 of the power transmission element and the power transmission element bracket 14 and accordingly the connection between the sash and frame of the window in an emergency or in the event of a failure of the motorized drive unit is simple and reliable with minimal effort To avoid damaging the window, it can be released manually from the outside.

Reference List

10

drive

12

tail

14

Power Transmission Element Block

16

snap connection

18

Tool

20

bolt

22

recording area

24

opening

26

release mechanism

28

bearing element

28'

first leg

28"

second leg

30

spacer

32

Inclined surface of a bearing element

34

inclined surface of the intermediate piece

36

bevel of a bolt

38

sloping surface of the tail

f

pushing force

Claims (9)

1. Drive (10) for opening and closing a window sash, a door leaf or the like, having a motorized drive unit which can be integrated in the profile of the window frame or door frame and which, to actuate the window sash or door leaf, interacts with a force transmission element which is flexurally rigid on one side, in particular a chain, which is provided, at its end which can be connected to the sash/leaf, to an end piece (12) which can be fixed in a force transmission element lock (14) which can be integrated in the sash/leaf profile, wherein the end piece (12) of the force transmission element can be fixed in the force transmission element lock (14) via a latching connection (16) and the force transmission element lock (14) is configured in such a way that, in the normal situation, both for motorized opening and closing of the sash/leaf, and when the sash/leaf is closed, the end piece (12) of the force transmission element can be fixed in the force transmission element lock (14) by the latching connection (16) and, for the emergency situation, when the sash/leaf is closed, the latching connection (16) can be manually released from outside by applying a pressing force (F) by means of a tool (18), in particular a screwdriver or the like, which can be guided through an opening provided in the sash/leaf profile, to free the end piece (12) of the force transmission element, characterized in that the latching connection (16) comprises two mutually opposite bolts (20) or the like which are each mounted so as to be axially displaceable in the force transmission element lock (14), which bolts extend from mutually opposite sides in a receiving region (22) of the force transmission element lock (14) for the end piece (12) of the force transmission element, are preloaded resiliently towards one another and, to fix the end piece (12) of the force transmission element in the receiving region (22), can be latched from the two mutually opposite sides into an opening (24) of the end piece (12) of the force transmission element.
2. Drive according to Claim 1,
   characterized in that the end piece (12) of the force transmission element is provided with a through-opening (24) into which the two bolts (20) can be latched from opposite ends.
3. Drive according to Claim 1,
   characterized in that the end piece (12) of the force transmission element is provided on mutually opposite sides with in each case a separate opening (24) into which there can in each case be latched a bolt (20).
4. Drive according to at least one of the preceding claims,
   characterized in that the force transmission element lock (14) is provided with a release mechanism (26) via which, with a respective action thereon by a pressing force (F) applied by means of the tool (18), the bolts (20) preloaded resiliently towards one another can be pressed apart counter to the spring forces to release the latching connection (16) and to free the end piece (12) of the force transmission element.
5. Drive according to Claim 4,
   characterized in that the release mechanism (26) of the force transmission element lock (14) comprises two mutually opposite bearing elements (28) which are each mounted so as to be axially displaceable in the force transmission element lock (14), are preloaded resiliently towards one another and laterally delimit the receiving region (22), on each of which bearing elements one of the two bolts (20) is firmly supported and via which the bolts (20) are preloaded resiliently towards one another.
6. Drive according to Claim 5,
   characterized in that the release mechanism (26) additionally comprises an intermediate piece (30) which is arranged between the two bearing elements (28) preloaded resiliently towards one another, is displaceable perpendicularly to the bearing elements (28) and can be acted upon by the tool (18), which intermediate piece has oblique surfaces (34) interacting with complementary oblique surfaces (32) of the bearing elements (28), with the result that, with a respective action on the intermediate piece (30) by a pressing force (F) applied by means of the tool (18), and with an associated displacement of the intermediate piece (30) relative to the bearing elements (28), the two bearing elements (28), and thus the two bolts (20), can be pressed apart to release the latching connection (16) and to free the end piece (12) of the force transmission element.
7. Drive according to Claim 6,
   characterized in that the two bearing elements (28) each have an angle-like configuration and the bolts (20) are firmly supported on mutually opposite first legs (28') of the angle-like bearing elements (28), and the intermediate piece (30) is arranged between second legs (28") of the bearing elements (28) that are at least substantially perpendicular with respect to the first legs (28').
8. Drive according to at least one of the preceding claims,
   characterized in that the end piece (12) of the force transmission element has, on mutually opposite sides, oblique surfaces (38) interacting with complementary oblique surfaces (36) of the bolts (20), with the result that, with a respective insertion of the end piece (12) of the force transmission element into the force transmission element lock (14), the two bolts (20) are first of all pressed apart counter to the spring forces acting on them in order then to latch into the end piece (12) of the force transmission element by means of the spring forces.
9. Window, door or the like having a drive according to at least one of the preceding claims.

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