Linkage for a fire protection barrier-free drive

Abstract

The invention relates to a linkage for a drive for a leaf of a door, a window or the like, a linkage arm, wherein the linkage arm is designed to be mounted rotatably about the longitudinal axis of an output shaft, a driver which is designed to be connected in a rotationally fixed manner to the output shaft of the drive, and a lock which is designed to be movably arranged between a first position and a second position, wherein in the first position the lock is designed to prevent rotation of the linkage arm about the longitudinal axis relative to the driver, and wherein in the second position the lock is designed to enable rotation of the linkage arm about the longitudinal axis relative to the driver.

Description

[0001] The present invention relates to a linkage for driving a leaf of a door, window, or the like. Furthermore, the invention relates to a drive for a leaf of a door, window, or the like having said linkage.

[0002] Door drives and their linkages can be designed in a variety of ways. Depending on the application and desired function, they can be fully automatic, semi-automatic, or have a freewheel function.

[0003] DE 44 26 201 A1, for example, describes a door drive that works with an electromechanical motor and a closing spring. The drive has an output shaft that is connected to the leaf via a power-transmitting linkage with a sliding arm and slide rail. The closing spring ensures that the leaf is securely closed even in the event of a power failure. To prevent disruptive opening resistance due to the closing spring during normal operation of the drive, the drive is provided with an on / off locking device that interacts with the closing spring. In the switched-on position, this locking device keeps the closing spring pre-tensioned so that the leaf can be driven exclusively under the action of the electromechanical motor or operated manually. When the locking device is switched off, the closing spring is released, so that the leaf closes under the action of the closing spring.The locking device can be released via a fire detector or similar device.

[0004] The disadvantage of this door drive is that it prevents barrier-free access to the driven door in the event of a fire. The locking mechanism, activated by a fire detector, releases the closing spring and thus creates a moment in the closing direction. Therefore, standards such as DIN 18040-1 or DIN 12217, which ensure barrier-free access, cannot be met with this door drive.

[0005] DE 10 2015 000 612 A1 relates to a safety device for securing a fire door in escape and rescue routes. A locking device of the door can be released via an RWS terminal with an emergency button. Furthermore, the door is provided with a door closer which has an electrically switchable freewheel device in order to enable convenient operation of a door leaf. Universal use of the safety device while simultaneously meeting high safety requirements is made possible by providing a control device which interacts with the freewheel device and the locking device in such a way that the control device switches both the locking device and the freewheel device separately. In particular, the control device can switch (or deactivate) the freewheel device to close the door leaf, for example in the event of a fire.deactivate) and / or in the event of a panic, switch the locking device to unlock the door leaf.

[0006] The problem with the safety device disclosed in DE 10 2015 000 612 A1 is that barrier-free access is ensured in the event of a panic, but not in the event of a fire.

[0007] In this respect, door drives with type approval are known that are barrier-free in everyday use (i.e., during normal operation). However, in an emergency, particularly in the event of smoke or fire, these usually close the door using spring force, which means that accessibility is no longer guaranteed. In the event of a fire, the drive on these doors is deactivated (in the event of a fire, a door must be closed without mains power), and a user then usually has to open the door against the energy storage device, which means it is not barrier-free. This can be particularly dangerous for disabled people, the elderly, or children.

[0008] The invention is therefore based on the object of creating a linkage for a drive and a drive for a leaf of a door, window, or the like, which, particularly in the event of a fire, allows barrier-free access while complying with the regulations for fire doors and, in particular, complies with the standards DIN 18263-4 and EN 17372 (for fire doors) as well as DIN 18040-1 and DIN 12217 (to ensure barrier-free doors). The linkage should be designed in such a way that existing drives can be easily retrofitted with the innovative linkage, thus ensuring a drive for a barrier-free fire door.

[0009] This object is achieved by a linkage having the features of claim 1, a drive having the features of claim 7 and a drive having the features of claim 13.Accordingly, a linkage for a drive for a leaf of a door, a window or the like is provided, comprising a linkage arm, wherein the linkage arm is configured to be mounted rotatably about the longitudinal axis of an output shaft, a driver which is configured to be connected in a rotationally fixed manner to the output shaft of the drive, and a lock which is configured to be movably arranged between a first position and a second position, wherein in the first position the lock is configured to prevent rotation of the linkage arm about the longitudinal axis relative to the driver (14) (so that the leaf can be driven at least in the opening direction) and wherein in the second position the lock is configured to enable rotation of the linkage arm about the longitudinal axis relative to the driver (so that the leaf can be moved freely at least in the closing direction).

[0010] The innovative linkage ensures that the link arm is operatively connected to the drive's output shaft in the first locking position, as is usually the case during normal door operation. Since the lock prevents rotation of the link arm relative to the follower (more precisely, it prevents movement of the link arm in the circumferential direction around the longitudinal axis relative to the follower) in the first position, but allows absolute rotation of the link arm around the longitudinal axis, rotation of the link arm inevitably results in rotation of the follower, and thus rotation of the output shaft. In other words, in the first locking position, the link arm is operatively connected to the output shaft or drive.

[0011] In the second position of the lock, which is intended to be used in the event of a fire or in emergency operation, it can be ensured that both a rotation of the link arm (and thus of the sash) in the closing direction of the sash and a rotation of the link arm in the opening direction of the sash are possible, without the existence of an operative connection between the link arm and the output shaft. This allows the link arm to move freely in the second position of the lock, at least as long as the driver does not prevent this. Freewheeling can therefore be achieved in emergency operation, particularly in the opening direction.

[0012] The rotation of the linkage arm in the opening direction of the sash is understood to mean a rotation of the linkage arm around its longitudinal axis in a direction that, if there is an active connection between the linkage and the sash, results in the sash opening. In contrast, the rotation of the linkage arm in the closing direction of the sash is understood to mean a rotation of the linkage arm around its longitudinal axis in a direction that, if there is an active connection between the linkage and the sash, results in the sash closing. The same applies to components other than the linkage arm, e.g., the follower.

[0013] The linkage thus includes a lock which, depending on the position (in interaction with the driver), can activate or deactivate a freewheel.

[0014] The disclosed linkage or drive allows the leaf of doors or the like to be opened without significant effort in emergency mode (second position of the lock). This function is particularly important for facilities with elderly, weaker, or physically disabled people, such as hospitals, nursing homes, or kindergartens. At the same time, the linkage according to the invention can ensure that fire protection corridors can continue to be formed in the event of a fire by enabling the door to close safely.

[0015] Until now, such requirements required significant effort, both in terms of design and commissioning of the respective drives. This often required the installation of programmable logic controllers (PLCs), safety switches, extensive cabling, or other special components, and the respective solutions had to be coordinated with and approved by building authorities on a case-by-case basis. Another disadvantage of such solutions is that safety signals sometimes have to be suppressed or ignored, and special control elements are required (radar sensors cannot be used for such drives due to the risk of false triggering, for example, caused by smoke in the event of a fire). Furthermore, compliance with the relevant standards is often limited.

[0016] With the rod assembly or drive according to the invention, the above-mentioned technical problem can now be solved, as expected, with a type approval.

[0017] The linkage arm preferably comprises a bolt, wherein in the first position of the lock the lock is configured to engage the bolt and (thereby) prevent relative movement of the bolt (and thus of the linkage arm) in the direction of rotation about the longitudinal axis relative to the driver, and wherein in the second position of the lock the lock is configured to release the bolt and (thereby) enable relative movement of the bolt in the direction of rotation about the longitudinal axis relative to the driver. In the first position the lock and the bolt are preferably engaged, while in the second position the lock releases the bolt. In the first position an automatic operation can take place for a drive on which the linkage is arranged. In principle the bolt could also be arranged on the lock and a corresponding receptacle for the bolt could be provided in the linkage arm in order to fulfill the aforementioned functions.A different type of positive and / or frictional (active) connection between the rod arm and the lock in the first position of the lock is also conceivable.

[0018] Particularly preferably, the lock is arranged so as to be movable along the longitudinal axis of the output shaft between the first position and the second position. Particularly preferably, the lock is configured to be mounted axially displaceably (along the longitudinal axis) on the driver.

[0019] Furthermore, in the first position of the lock, the lock is preferably not rotatable about the longitudinal axis relative to the link arm, and in the second position of the lock, the lock is rotatable about the longitudinal axis relative to the link arm (both in the opening direction and (at least temporarily) in the closing direction of the sash). Particularly preferably, in the first position, the lock is secured against rotation relative to the driver (preferably in a form-fitting manner, e.g. via a hexagon or spline). Particularly preferably, in the first position, the lock, the driver, and the link arm are arranged rotationally fixed relative to one another. In the second position, however, a movement of the link arm in the circumferential direction about the longitudinal axis relative to the lock and at least temporarily relative to the driver is to be enabled, wherein a relative movement of the link arm relative to the driver is preferred, in particular in the opening direction of the sash.

[0020] In one embodiment of the linkage, the driver is configured to precede the linkage arm in the direction of rotation around the longitudinal axis in the opening direction of the wing when the lock is in the second position.

[0021] Since the lock in the second position thus enables, in particular, movement of the link arm relative to the driver in the opening direction, free rotation of the (door) leaf in the opening direction of the leaf is ensured. In other words, when opening the leaf, a pedestrian does not have to press the leaf against the driver and thus the drive and possibly a closing spring. Since in the second position of the lock the lock is designed to allow rotation of the link arm around the longitudinal axis relative to the driver in the closing direction of the leaf, it can also be ensured that secure closing is guaranteed after any essentially resistance-free passage through the door or the like.

[0022] In one embodiment of the linkage, the linkage further comprises an actuator configured to move the lock between the first position and the second position, preferably axially along the longitudinal axis of the output shaft.

[0023] However, it is also conceivable that the movement of the lock between the first position and the second position takes place in a different direction relative to the longitudinal axis of the output shaft, for example tangentially or radially.

[0024] The actuator preferably has an electromagnet configured to move the lock between the first position and the second position using electromagnetic force. In particular, the actuator can be designed as an electric lifting magnet, which can, for example, raise and lower the lock axially along the output shaft. However, other types of actuators are also conceivable; for example, the actuator could actuate the lock using a motor, i.e., move it between the first and second positions.

[0025] The actuator is preferably configured to be fixedly connected to a housing of the drive. In particular, the actuator is configured to be fixedly mounted on the housing of a drive unit of the drive, preferably centrally above the output shaft.

[0026] In a preferred embodiment, the actuator is configured to be connected to a control device, preferably a control device of the drive, and to receive a control signal from the control device.

[0027] This means that the movement or position of the lock can be controlled by the control device via the actuator.

[0028] Preferably, the actuator is configured to move the lock into the first position and / or to hold it in the first position when the actuator receives a normal operating signal as a control signal, and / or the actuator is configured to move the lock into the second position and / or to hold it in the second position when the actuator receives an emergency operating signal as a control signal.

[0029] In normal operation, i.e. when there is no fire or similar incident, the lock is in the first position and the leaf is connected to a drive unit of the drive via the linkage, so that a fully automatic door drive can be realized. In emergency operation, however, freewheeling in the opening direction of the leaf should be possible at least temporarily, so that elderly or otherwise weakened people can open the door or similar device with little effort. This is made possible in the second position of the lock by the linkage arm (in particular the bolt) being able to move in the opening direction of the leaf relative to the driver. At the same time, secure closing of the door or similar device is possible because in the second position the lock no longer prevents movement of the linkage arm or bolt in the closing direction.

[0030] In one embodiment of the linkage, the driver is configured to be moved into a start position by the output shaft of the drive when the actuator receives the emergency operation signal, wherein in the start position a movement of the linkage arm (or the bolt) in the direction of rotation around the longitudinal axis, in particular in the opening direction of the wing, is enabled relative to the driver.

[0031] This gives the link arm (in particular the bolt) freedom of movement with freewheel during emergency operation. In particular, by displacing the driver relative to the link arm, movement of the link arm in the opening direction of the leaf can be enabled. This means that the door or the like can be opened during emergency operation without great effort, since as long as the link arm is freely movable relative to the driver, it does not have to fight against the drive unit of the drive or possibly a mechanical energy storage device. The starting position specifies the maximum distance the door (or the link arm) can be opened without resistance. The starting position is preferably selected such that freewheeling of the link arm in the direction of rotation around the longitudinal axis in the opening direction of the leaf covers an angle of at least 45°, preferably at least 70°, more preferably at least 90°, relative to the closed position of the link arm.

[0032] In a preferred embodiment of the drive, the drive comprises a control device which is configured to provide a control signal to the actuator, wherein the drive can be operated in a normal operation and in an emergency operation, wherein in normal operation a normal operation signal is provided as a control signal and / or wherein in emergency operation an emergency operation signal is provided.

[0033] The control device can be connected to the actuator via cabling, for example, but non-cabled communication is also conceivable.

[0034] In a further embodiment of the drive, the actuator is configured to move the lock into the second position upon receipt of the emergency operation signal when the leaf is in the closed position, and in emergency operation when the leaf is in the closed position, the drive device is configured to move the driver into a start position via the output shaft, so that a movement of the bolt in the direction of rotation around the longitudinal axis relative to the driver is enabled.

[0035] Preferably, the movement of the lock to the second position and the movement of the driver to the start position occur simultaneously. In this respect, it is provided that the control device provides the emergency operation signal to the actuator and the drive device simultaneously.

[0036] In emergency operation, free movement of the link arm (in particular the pin of the link arm) in the direction of rotation around the longitudinal axis is preferably possible both in the closing and opening direction of the sash (at least over a certain angular range or within a certain time).

[0037] Furthermore, the drive preferably comprises a mechanical energy storage device which is designed to be charged in emergency operation when the leaf is in the closed position, wherein the mechanical energy storage device is connected to the output shaft of the drive device and the driver in emergency operation in such a way that the charging of the mechanical energy storage device causes the driver to move into the starting position.

[0038] The mechanical energy storage device is typically a (closing) spring, which can be configured as a tension, compression, or torsion spring. However, a spring arrangement comprising multiple springs is also conceivable. The spring (or the mechanical energy storage device) is connected to the drive unit for driving purposes, at least in emergency operation. Tensioning the spring then causes the driver to move circumferentially around the longitudinal axis in the opening direction of the (door) leaf. Releasing the spring causes the driver to move in the opposite direction.

[0039] The mechanical energy storage device is preferably designed to immediately begin discharging in emergency operation when the wing is opened, wherein the mechanical energy storage device is connected to the output shaft of the drive device and the driver in such a way that the discharging of the mechanical energy storage device causes the driver to move in the closing direction of the wing, so that the driver causes the wing to move towards the closed position via the rod or the pin of the rod.

[0040] In other words, in the case of a spring as an energy store, the spring is initially charged in emergency operation, whereby the driver is moved into the start position, i.e. relative to the rod or its bolt in the opening direction of the leaf or door. The rod or its bolt are not affected by this movement, i.e. the energy store can be charged when the door is closed. Opening the door causes the spring to relax and thus causes the driver to move in the closing direction and towards the rod or its bolt. As long as the driver has not yet reached the rod, in particular the bolt, the rod or bolt can move freely in the opening direction of the leaf or door. In this respect, the leaf is in freewheeling mode during this time. As soon as the driver hits the rod or bolt, the rod orThe bolt is driven in the closing direction by the driver and moved toward the closed position. In other words, the door is brought into the closed position via the driver (and the bolt).

[0041] Furthermore, the drive preferably has a sensor unit for detecting the opening of the wing.

[0042] The sensor unit can be designed as a micro switch, proximity sensor, or similar. The sensor unit can be configured to detect the opening angle of the sash relative to the closed position.

[0043] Furthermore, the drive can be equipped with a trigger unit configured to provide an opening signal (and thus indicate the opening of the wing) upon detection of a leaf opening, in particular a predetermined (preferably adjustable) opening angle of the leaf or door relative to the closed position (during an opening movement of the leaf), by the sensor unit. Upon receipt of the opening signal, the control device can be configured to (immediately) discharge the mechanical energy storage device.

[0044] The drive is advantageously designed to be connected to an emergency power supply. In particular, the drive preferably has an uninterruptible power supply (UPS) to ensure emergency operation. However, the drive can also include one or more batteries to ensure emergency operation. Should the power supply (including batteries or the like) fail completely in an emergency, particularly in the event of a fire, the mechanical energy storage device is or will be operatively connected to the drive device. In this case, barrier-free access is no longer guaranteed, but at least the standards for fire doors are still met (extended emergency operation).

[0045] The invention is described below by way of example with reference to the figures. Elements with the same function and mode of operation are provided with the same reference numerals in the figures. They show: Fig. 1 shows a first embodiment of the rod assembly according to the invention in exploded view, Fig. 2 shows the driver and the lock of the first embodiment of the rod assembly according to the invention according to Fig. 1 in perspective view, Fig. 3 a drive for a door, a window or the like with a second embodiment of the linkage according to the invention in exploded view, Fig. 4 the drive from Fig. 3 , with rods in assembled state, in perspective view, Fig. 5 the drive from Fig. 4 with installed rods in perspective view, Fig. 6A a section of the design of the drive from Fig. 5 , with the lock in the first position, in a view from above, Fig. 6B section of the design of the drive from Fig. 5 , with the lock in the first position, in a side sectional view, Fig. 7 a section of the design of the drive from Fig. 5 in a side sectional view, with the lock in the second position, Fig. 8, 9 and 10 each show a section of the design of the drive 100 from Fig. 5 in perspective, with the drive 100 in emergency mode.

[0046] Fig. 1 shows a first embodiment of the linkage according to the invention in an exploded view. The linkage designated by the reference numeral 10 comprises a linkage arm 12 with a bolt 122 arranged thereon, a driver 14, and a lock 16. Both the linkage arm 12 and the driver 14 and the lock 16 each have a through-hole through which a fastening element such as a screw can be guided in order to connect the aforementioned components to a drive, in particular its output shaft, for a door or the like. In this respect, the longitudinal axis 40 of the output shaft of the drive, for which the linkage is intended, can be laid through the respective through-holes. The linkage 10 can thus be easily mounted on an existing drive, or an existing drive can be retrofitted with the novel linkage 10.

[0047] The linkage arm 12 is configured to be mounted rotatably about the longitudinal axis 40 of the output shaft, while the driver 14 is configured to be connected in a rotationally fixed manner to the output shaft of the drive. The lock 16 is preferably also configured to be connected in a rotationally fixed manner to the output shaft, but can in principle (depending on the position) also be configured to be arranged rotatably about the output shaft.

[0048] The driver 14 and the lock 16 of the first embodiment of the rod according to the invention from Fig. 1 are with their individual components in Fig. 2 shown.

[0049] The driver 14 is designed here as a cylinder 142 with an external profile, at one end of which are connected a hexagonal body 144 (with a slightly larger diameter than the cylinder) and a circular disc cutout 146 (with an even larger diameter; in that order). The cylinder 142 is configured to engage with the output shaft, wherein the output shaft preferably has a corresponding complementary profile.

[0050] The lock 16 is designed as a circular disc with a hexagonal through-hole 164 (in the longitudinal direction around the longitudinal axis 40). The size of the through-hole 164 is dimensioned such that the hexagon 144 of the driver 14 fits substantially positively through the through-hole 164. Furthermore, the disc of the lock 16 has a semicircular recess 166, into which the circular disc cutout 146 of the driver 14 fits substantially positively at the circular peripheral edge.

[0051] Like the Fig. 1 und 2 can be removed, the lock 16 can accommodate the driver 14 in such a way that the hexagon 144 of the driver 14 is arranged in the hexagonal through-hole 164 of the lock 16 and the circular disc cutout 146 of the driver 14 rests against the semicircular recess 166 of the lock 16 in the direction of the longitudinal axis. When the driver 14 is accommodated in the lock 16, a rotationally fixed connection (about the longitudinal axis 40) is provided via the hexagon 144 or the hexagonal through-hole 164. Furthermore, there is then a distance between the stops 148 of the driver and 168 of the lock, which is dimensioned such that the bolt 122 of the linkage arm 12 essentially fills the distance between the two stops and at least partially rests positively on both the stop 148 and the stop 168.

[0052] The lock 16 is configured to be movable between a first position and a second position along the longitudinal axis 40, wherein in the first position the lock 16 is configured to engage with the driver 14. When the linkage is assembled, the pin 122 of the linkage arm 12 is thus encompassed on one side by the driver 14 (via the stop 148) and on the opposite side by the lock 16 (via the stop 168) when the lock 16 is in the first position. Thus, in the first position, there is a rotationally fixed connection between the pin 122, the driver 14, and the lock 16, so that a movement of the pin 122 (or a movement of the linkage arm 12) inevitably results in a movement of the driver 14.Since the driver 14 is designed to be connected to the drive unit of a drive in a driving manner, free running of the wing can consequently be prevented in the first position of the locking device 16.

[0053] In the second position, the lock 16 is spaced apart from the driver 14 to such an extent that there is no longer any engagement. A relative movement of the bolt 122 and the driver 14 to the lock 16 is therefore possible in the second position. In particular, in the second position of the lock 16, the driver 14 can move relative to the bolt 122 in the circumferential direction about the longitudinal axis 40, thus enabling the bolt 122 to rotate freely in the circumferential direction about the longitudinal axis in the opening direction of the wing. At the same time, the bolt 122 can also move freely in the closing direction of the wing, since the lock 16 does not prevent such a movement in the second position.

[0054] Fig. 3 shows an exploded view of a drive 100 for a door, window, or the like with a second embodiment of the linkage 10 according to the invention. The linkage 10 in the second embodiment is constructed in the same way as in the first embodiment, but includes an actuator 18 as an additional component.

[0055] In this embodiment, the actuator 18 is designed as an electric lifting magnet, which is ring-shaped and configured to be arranged in a ring around the lock 16. The actuator 18 is configured to displace the lock 16 along the longitudinal axis 40 between the first position and the second position via an electromagnetic force.

[0056] The drive 100 comprises a motor 102 and a drive unit 104 driven by the motor, which has an output shaft 106. The linkage 10 is configured to be connected to the output shaft 106 via the driver 14. The linkage 10 and in particular the driver 14 are configured to be attached to the drive 100 via a fastening element (not shown). In this respect, the linkage 10 can easily replace an existing linkage and thus create a drive 100 that is capable of ensuring accessibility even in the event of a fire.

[0057] Fig. 4 shows the drive 100 from Fig. 3 , wherein the rod 10 is shown in assembled state.

[0058] Fig. 5 shows the drive 100 Fig. 4 with installed linkage 10 in perspective view. The actuator 18 is attached to the housing 108.

[0059] Fig. 6A shows a section of the design of the drive 100 from Fig. 5 , with the lock in the first position, in a view from above. It is clearly visible how the bolt 122 is clamped between the driver 14 and the lock 16 in the first position of the lock 16. A movement of the bolt 122 in the circumferential direction about the longitudinal axis (not shown) in the closing direction of the door is prevented in this position by the lock 16. In other words, the lock is active in the first position and there is no freewheeling of the bolt. In the first position, therefore, automatic operation of the drive 100 for a door (or window, etc.) can be enabled.

[0060] Fig. 6B shows a section of the design of the drive 100 from Fig. 5 , with the lock in the first position, in a side sectional view. In Fig. 6 It is clearly visible how the driver 14 engages with the output shaft 106 or is connected thereto. Furthermore, it is clearly visible that in this position of the lock 16, the driver 14 rests against the lock 16 in the longitudinal direction (along the longitudinal axis 40) or the lock 16 is in engagement with the driver 14. A fastening element 50, in this case a screw, firmly connects the rod 10 to the drive (in the longitudinal direction 40; see also Fig. 7 ).

[0061] Fig. 7 shows a section of the design of the drive 100 from Fig. 5 in a lateral sectional view, with the lock in the second position. In contrast to the Fig. 6B shown position is in Fig. 7 the lock 16 is no longer in engagement with the driver 14 and the bolt 122. This means that in the second position of the lock 16, the bolt is no longer prevented from moving in the closing direction of the door by the lock 16. At the same time, the driver 14 is now freely movable in the circumferential direction about the longitudinal axis and can rotate relative to the bolt 122, in particular in the opening direction of the leaf, so that the driver 14 can in principle lead the bolt 122 in the opening direction of the leaf, thus allowing the bolt 122 (and thus the leaf) to run freely in the opening direction of the leaf.

[0062] The Figuren 8 , 9 und 10 each show a section of the design of the drive 100 from Fig. 5 in perspective, with the drive 100 in emergency mode.

[0063] Fig. 8 shows a section of the design of the drive 100 with the lock 16 in the second position. The driver 14 is rotated relative to the bolt 122 in the circumferential direction around the longitudinal axis in the opening direction of the sash (indicated by the arrow shown) and is located in a so-called start position. The movement of the driver 14 can take place via the output shaft 106 of the drive unit 104 of the drive 100. The sash is in the closed position in the state shown. The rotation of the driver 14 around the longitudinal axis 40 occurs when the drive 100 is in emergency operation, i.e., in particular, when the control device outputs an emergency operation signal that also causes the actuator 18 to move the lock 16 into the second position.

[0064] If the leaf is now opened, the linkage arm 12 moves in the opening direction (direction of the arrow). Consequently, the bolt 122 also moves in this direction and approaches the driver 14. At the same time, the control device (not shown) of the drive 100 receives the information that the door has been opened. More precisely, the control device receives an opening signal and then causes a mechanical energy storage device, which is designed to be operatively connected to the driver 14 in emergency operation, to be discharged (virtually immediately or directly). The discharge of the energy storage device causes the driver to rotate against the opening direction (i.e., against the direction of the arrow) and thus move towards the bolt.

[0065] Fig. 9 shows a further section of the design of the drive 100 from Fig. 5 in a perspective view, with the lock 16 in the second position. In Fig. 9 It is shown how the bolt 122 moves towards the driver 14 during an opening movement of the wing (opposite the position in Fig. 8 ) has approached.

[0066] The movement of the bolt against the opening direction is in Fig. 10 clearly visible. The driver 14 and the bolt 122 have already approached such that the bolt 122 is at the stop of the driver 14. Due to the movement of the driver 14 in the closing direction, caused by the discharging of the energy storage device, the bolt 122 is also pushed towards the closed position by the driver 14, so that the sash is safely moved into the closed position after the freewheel has been enabled. Bezugszeichenliste

[0067] 10 Linkage 12 Linkage arm 14 Driver 16 Lock 18 Actuator 40 Longitudinal axis 50 Fastening element 100 Drive 102 Motor 104 Drive unit 106 Output shaft 108 Housing 122 Bolt

Claims

1. A linkage (10) for a drive (100) for a leaf of a door, a window or the like, comprising a linkage arm (12), wherein the linkage arm (12) is configured to be mounted rotatably about the longitudinal axis (40) of an output shaft (106), a driver (14) configured to be connected in a rotationally fixed manner to the output shaft (106) of the drive (100), and a lock (16) configured to be movably arranged between a first position and a second position, wherein in the first position the lock (16) is configured to prevent rotation of the linkage arm (12) about the longitudinal axis (40) relative to the driver (14), and wherein in the second position the lock (16) is configured to prevent rotation of the linkage arm (12) about the longitudinal axis (40) relative to the driver make possible.

2. Linkage (10) according to claim 1, wherein when the lock (16) is in the second position, the driver (14) is adapted to precede the linkage arm (12) in the direction of rotation about the longitudinal axis (40) in the opening direction of the wing.

3. Linkage (10) according to claim 1 or 2, further comprising an actuator (18) configured to move the lock (16) between the first position and the second position, preferably axially along the longitudinal axis (40) of the output shaft (106).

4. Linkage (10) according to claim 3, wherein the actuator (18) is configured to be connected to a control device, preferably a control device of the drive (100), and to receive a control signal from the control device.

5. Linkage (10) according to claim 4, wherein the actuator (18) is configured to move the lock (16) into the first position and / or to hold it in the first position when the actuator (18) receives a normal operating signal as a control signal, and / or wherein the actuator (18) is configured to move the lock (16) into the second position and / or to hold it in the second position when the actuator (18) receives an emergency operating signal as a control signal.

6. Linkage (10) according to claim 5, wherein the driver (14) is configured to be brought into a start position by the output shaft (106) of the drive (100) when the actuator (18) receives the emergency operation signal, wherein in the start position a movement of the linkage arm (12) in the direction of rotation about the longitudinal axis (40), in particular in the opening direction of the wing, relative to the driver (14) is enabled.

7. Drive (100) for a leaf of a door, a window or the like, with a housing (108), an output shaft (106) rotatably mounted in the housing (108) and a linkage (10) cooperating with the output shaft (106) according to one of claims 1 to 6.

8. Drive (100) according to claim 7, further comprising a control device which is configured to provide a control signal to the actuator (18), wherein the drive (100) is operable in a normal operation and in an emergency operation, wherein in normal operation a normal operation signal is provided as a control signal and / or wherein in emergency operation an emergency operation signal is provided.

9. Drive (100) according to claim 8, wherein the actuator (18) is configured to move the lock (16) into the second position upon receipt of the emergency operation signal when the leaf is in the closed position, and wherein in emergency operation when the leaf is in the closed position, the drive device (104) is configured to move the driver (14) into a start position via the output shaft (106), so that a movement of the linkage arm (12) in the circumferential direction about the longitudinal axis (40) relative to the driver (14) is enabled.

10. Drive (100) according to claim 9, further comprising a mechanical energy store which is designed to be charged in emergency operation when the leaf is in the closed position, wherein the mechanical energy store is connected to the output shaft (106) of the drive device (104) and the driver (14) in emergency operation such that the charging of the mechanical energy store causes the movement of the driver (14) into the start position.

11. Drive (100) according to claim 10, wherein the mechanical energy storage device is designed to immediately begin discharging in emergency operation when the wing is opened, wherein the mechanical energy storage device is connected to the output shaft (106) of the drive device (104) and the driver (14) in such a way that the discharging of the mechanical energy storage device causes a movement of the driver (14) in the closing direction of the wing, so that the driver (14) causes a movement of the wing towards the closed position via the linkage.

12. Drive (100) according to one of claims 7 to 12, further comprising a sensor unit for detecting the opening of the wing.

13. Drive (100) for a leaf of a door, a window or the like, with a housing (108), an output shaft (106) rotatably mounted in the housing (108), an actuator (18) and a lock (16), wherein the actuator (18) is designed to move the lock (16) between a first position and a second position, preferably axially along the longitudinal axis (40) of the output shaft (106), wherein in the first position of the lock (16), the lock (16) causes a rod arm (12) of a rod assembly (10) rotatably mounted on the output shaft (106) to be unable to rotate about the longitudinal axis relative to a driver (14) of the rod assembly (10), and wherein in the second position of the lock (16), the lock (16) causes the rod arm (12) to rotate about the longitudinal axis relative to the driver (14). the longitudinal axis (40) can rotate.

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