DE102018208416B4 - Locking drive for locking and unlocking a sash, a window or a door - Google Patents

Abstract

Locking drive (10) for locking and unlocking a sash (12) of a window or a door, with a housing (14), a mechanical locking energy store (16) for locking the sash (12) via the locking energy store (16) in this ) storable energy, a mechanical unlocking energy store (18) for unlocking the wing (12) via the energy that can be stored in this unlocking energy store (18), an energy store that can be acted upon by the closing wing (12) with the energy stores (16, 18) ) couplable tensioning device (20) for pre-tensioning the energy storage device (16, 18), and a control device (22), the pre-tensioned locking energy storage device (16) being discharged and unlocking via the control device (22) for locking the wing (12) of the wing (12) the discharge of the pretensioned unlocking energy store (18) can be triggered and the clamping device (20) via a coupling (24) to the energy store icher (16, 18) is connected, which when the wing (12) opens to cancel the coupling between the clamping device (20) and the energy stores (16, 18) can be operated in idle mode and via which when the wing (12) closes Clamping device (20) and the energy store (16, 18) for preloading the energy store (16, 18) can be coupled to one another by the closing wing (12).

Description

The invention relates to a locking drive for locking and unlocking a sash of a window, a door or the like.

The relevant window or door sash can be automatically locked and unlocked via a locking fitting assigned to it via such a locking drive, whereby a respective actuation of the locking fitting is correspondingly simplified.

The EP 2 369 100 A1 discloses a connecting rod fitting for a window, a door or the like which can be moved in its longitudinal direction either by means of a primary drive or by means of an additional drive. A switchable coupling device makes it possible to either establish an operative connection between an energy storage device provided and a drive rod or to decouple the energy storage device and the drive rod from one another.

The DE 10 2015 007 872 B3 discloses a coupling system for the rotationally fixed coupling of two elements of a mechatronic locking system. The coupling element can be pivoted back and forth between a basic position and a driving position. In the driving position, it connects both elements to one another in a rotationally fixed manner. The pivoting of the coupling element in the direction of the driving position is brought about by the action of force on the pivoting area, the pivoting back by the action of force on the pivoting back area. The force can be applied mechanically or magnetically.

The EP 1 170 445 A2 discloses a deployment device for a tilt or turn-tilt sash pivotably attached to a frame. The device comprises an extension arm which can be pivoted about a first pivot axis on the sash and about a second pivot axis on the frame. A drive arrangement provided on the sash or frame contains a drive unit which can be moved by a drive. A gear arrangement converts the movement of the drive unit into a movement of the extension arm and comprises a gear element which can be pivoted on a third pivot axis.

The previously usual locking drives of the type mentioned now have the disadvantage that, after the locking or unlocking process is to take place relatively quickly, the required movement speed of the drive must be relatively high, but this now brings with it corresponding noises The faster the drive moves, the more disturbing they are.

The invention is based on the object of specifying a locking drive of the type mentioned at the beginning, with which a direct automatic locking and unlocking of the window or door leaf is made possible within the shortest possible time with the lowest possible noise development.

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

The locking drive according to the invention for locking and unlocking a sash of a window, a door or the like comprises a housing, a mechanical locking energy store for locking the sash via the energy that can be stored in this locking energy store, a mechanical unlocking energy store for unlocking the sash via the energy that can be stored in this unlocking energy store, a tensioning device that can be acted upon by the closing wing and can be coupled to the energy store for pretensioning the energy store, and a control device. The control device for locking the sash can be used to discharge the pretensioned locking energy store and to unlock the sash the discharge of the pretensioned unlocking energy store can be triggered and the clamping device is connected to the energy store via a coupling, which when the sash opens to cancel the coupling between the tensioning device and the energy stores can be operated in idle mode and via which, when the wing closes, the tensioning device and the energy storage device for pretensioning the energy storage device can be coupled to one another by the closing wing.

Due to this design, a direct automatic mechanical locking and unlocking of the window or door sash is guaranteed with the locking drive within a very short time with noise development reduced to a minimum. Thus, in a respective locking or unlocking process for the relevant locking or unlocking of the window or door sash, a corresponding actuation of the locking fitting assigned to it is initially carried out by the mechanical energy stored in a respective energy store. Only then are the energy stores preloaded again for a subsequent locking and unlocking process by closing the door or window sash. The energy storage device can be pre-tensioned without any time pressure, since the action required by the user, i.e. the actual locking or unlocking, is already executed. For such a pre-charging of the energy storage device, the drive can thus be actuated later and in particular also at a relatively low speed, as a result of which the relevant noise development is reduced to a minimum. At the same time, there are very short waiting times for the respective user after the actual locking or unlocking of the window or door sash takes place within a very short time and in particular within less than a second due to the stored energy of the relevant energy store.

In comparison to actuation via a conventional window handle, locking or unlocking is thus not only simplified by the automatic actuation, but also significantly accelerated, without disturbing noises being produced.

The locking energy store preferably comprises a locking spring unit that can be pretensioned via the tensioning device and / or the unlocking energy store comprises an unlocking spring unit that can be pretensioned via the tensioning device.

The actual locking or unlocking of the window or door sash takes place in this case by the energy of a locking spring unit that can be prestressed by closing the sash or by the energy of an unlocking spring unit that can be prestressed by closing the sash.

It is also particularly advantageous if the tensioning device comprises a lever arrangement acted upon by a pretensioned spring unit in the direction of the wing. With such a tensioning device comprising a spring-loaded lever arrangement, the construction of the locking drive can be kept relatively simple.

According to a preferred practical embodiment, the locking drive comprises a slide which can be or is connected to a locking fitting of the sash, which is mounted displaceably between a locking position and an unlocking position, in which it can be locked by a locking device and by the precharged unlocking energy store or the precharged lock -Energy storage can be charged.

The locking device can preferably be controlled by the control device in such a way that the slide, which occupies its locking position and is acted upon by the preloaded unlocking energy store, is released for unlocking the sash in order to be moved into its unlocking position by the energy stored in the unlocking energy store.

Advantageously, the unlocking energy store or unlocking spring unit, which is discharged to move the carriage into its unlocking position, is supported on the one hand on the carriage, while on the other hand it is firmly supported.

In addition, the locking device can advantageously be controlled by the control device in such a way that the slide is locked again in its unlocking position after it has been transferred from its locking position to its unlocking position.

In addition, the locking device can preferably be controlled by the control device in such a way that the slide, which occupies its unlocking position and is acted upon by the pretensioned locking energy store, is released for locking the sash in order to be moved into its locking position by the energy stored in the pretensioned locking energy store.

Advantageously, the locking energy store or the locking energy store, which is discharged to move the slide into its locking position, is supported.

Locking spring unit on the one hand on the slide, while on the other hand it is firmly supported.

In addition, the locking device can advantageously be controlled by the control device in such a way that the slide is locked again in its locking position after it has been transferred from its unlocking position to its locking position.

According to an expedient practical embodiment of the locking drive according to the invention, the locking energy store and the unlocking energy store can be pretensioned in particular simultaneously via a particularly linearly displaceable bracket or the like that can be coupled to the clamping device via the coupling.

With such a bracket, via which the locking energy store and the unlocking energy store can be preloaded in particular at the same time, a relatively simple construction of the locking drive is possible.

In this case, after the pretensioning has taken place, the energy store and it has been locked of the bracket can be decoupled from the clamping device by the locking device of the bracket via the clutch, which is again operated in idle mode.

It is also particularly advantageous if the locking energy store can be pretensioned via the bracket against the slide which is locked in its unlocked position by the locking device.

In contrast, the unlocking energy store can expediently be biased against the housing or a stop fixed to the housing via the bracket.

It is also particularly advantageous if the carriage can be moved from its unlocked position into its locking position relative to the bracket when the bracket is fixed by the locking device by the discharging locking energy store supported on the carriage and on the fixed bracket.

It is also advantageous if the slide can be displaced from its unlocked position into its locked position via the bracket released by the locking device by the unloading release energy store supported on the one hand on the released bracket and on the other hand on the housing or housing-fixed stop.

Preferably, during a respective displacement of the slide between its unlocking position and its locking position via the bracket, the bracket is decoupled from the clamping device by the idling clutch and the locking energy store is relaxed.

According to an expedient practical embodiment of the locking drive according to the invention, the bracket is provided with two opposing edge sections, between which the carriage and the locking energy store are arranged, the locking energy store between one of the two edge sections and the slide and the unlocking energy store between the other edge portion and the housing or housing-fixed stop is arranged.

The coupling provided between the energy stores or the bracket and the tensioning device can for example comprise a type of ballpoint pen mechanism.

• 1 eine schematische Darstellung einer beispielhaften Ausführungsform eines erfindungsgemäßen Verriegelungsantriebs bei geschlossenem Fenster- bzw. Türflügel, wobei der Schlitten in seiner Entriegelungsposition festgestellt, der Verriegelungs-Energiespeicher über den festgestellten Bügel gegen den festgestellten Schlitten vorgespannt und der am Gehäuse abgestützte Entriegelungs-Energiespeicher gegen den festgestellten Bügel vorgespannt ist,
• 2 eine schematische Darstellung des Verriegelungsantriebs gemäß 1 bei geschlossenem Fenster- bzw. Türflügel, wobei der Schlitten in seiner Verriegelungsposition festgestellt, der Verriegelungs-Energiespeicher entladen und der am Gehäuse abgestützte Entriegelungs-Energiespeicher gegen den festgestellten Bügel vorgespannt ist,
• 3 eine schematische Darstellung des Verriegelungsantriebs gemäß 1 bei geschlossenem Fenster- bzw. Türflügel, wobei der bei im Leerlauf betriebener, zwischen dem Bügel und der Spannvorrichtung vorgesehener Kupplung über den Bügel in seine Entriegelungsposition verschobene Schlitten in seiner Entriegelungsposition festgestellt und sowohl der Verriegelungs-Energiespeicher als auch der Entriegelungs-Energiespeicher jeweils entladen ist,
• 4 eine schematische Darstellung des Verriegelungsantriebs gemäß 1 bei offenem Fenster- bzw. Türflügel und in Richtung des offenen Flügels ausgefederter, wieder in die Kupplung eingerasteter Spannvorrichtung, wobei der Schlitten in seiner Entriegelungsposition festgestellt und sowohl der Verriegelungs-Energiespeicher als auch der Entriegelungs-Energiespeicher jeweils entladen sind, und
• 5 eine schematische Darstellung des Verriegelungsantriebs gemäß 1 bei wieder geschlossenem Fenster- bzw. Türflügel und durch den sich schließenden Flügel vorgespannten Energiespeichern, wobei der Schlitten in seiner Entriegelungsposition festgestellt, der Verriegelungs-Energiespeicher über den festgestellten Bügel gegen den festgestellten Schlitten vorgespannt und der am Gehäuse abgestützte Entriegelungs-Energiespeicher gegen den festgestellten Bügel vorgespannt ist, womit der Verriegelungsantrieb wieder seinen bereits in der 1 dargestellten Anfangszustand einnimmt.

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 a locking drive according to the invention with the window or door leaf closed, the slide being locked in its unlocking position, the locking energy storage device preloaded against the locked slide via the locked bracket and the unlocking energy storage device supported on the housing against the locked bracket is biased,
• 2 a schematic representation of the locking drive according to 1 with the window or door sash closed, the slide being locked in its locking position, the locking energy storage being discharged and the unlocking energy storage supported on the housing being pretensioned against the fixed bracket,
• 3 a schematic representation of the locking drive according to 1 When the window or door sash is closed, the carriage, which is operated in idle mode and is provided between the bracket and the clamping device, is found in its unlocked position and both the locking energy storage device and the unlocking energy storage device are each discharged ,
• 4th a schematic representation of the locking drive according to 1 with the window or door sash open and in the direction of the open sash, spring-loaded clamping device re-engaged in the coupling, the slide being fixed in its unlocked position and both the locking energy store and the unlocking energy store being discharged, and
• 5 a schematic representation of the locking drive according to 1 when the window or door sash is closed again and the energy storage device is biased by the closing sash, the slide being locked in its unlocking position, the locking energy storage device being biased against the locked carriage via the locked bracket and the unlocking energy storage device supported on the housing against the locked bracket is biased, so that the locking drive is already in the 1 assumes the initial state shown.

The 1 to 5 show different states of an exemplary embodiment of a locking drive according to the invention 10 for locking and unlocking a sash 12 a window, a door or the like.

The locking drive 10 includes a housing 14th , a mechanical locking energy storage device 16 to lock the sash 12 about the locking and energy storage in this 16 storable energy, a mechanical unlocking energy storage 18th to unlock the sash 12 about the in this unlocking energy storage 18th storable energy, one through the closing wing 12 can be charged with the energy storage 16 , 18th connectable clamping device 20th for preloading the energy storage 16 , 18th and a control device 22nd .

This is via the control device 22nd to lock the sash 12 the discharge of the pre-tensioned locking energy store 16 and to unlock the sash 12 the discharge of the preloaded unlocking energy store 18th releasable and the clamping device 20th via a clutch 24 to the energy storage 16 , 18th connected with the sash opening 12 to cancel the coupling between the clamping device 20th and the energy storage 16 , 18th can be operated in idle mode and via the closing wing 12 the jig 20th and the energy storage 16 , 18th for preloading the energy storage 16 , 18th through the closing wing 12 are coupled to each other.

In the present exemplary embodiment, the mechanical locking energy store comprises 16 for example one about the jig 20th pre-tensionable locking spring unit and the mechanical unlocking energy store 18th one over the jig 20th pre-tensionable release spring unit.

The jig 20th in the present case includes, for example, a spring unit preloaded by a spring unit 26th towards the wing 12 acted upon lever arrangement 28 .

The locking drive 10 comprises one with a locking fitting of the wing 12 connectable or connected carriage 30th that is between a locking position (cf. 2 ) and an unlocking position (see 1 and 3 to 5 ) is slidably mounted, in which it is held by a locking device 32 each detectable and by the precharged unlocking energy store 18th (see in particular the 1 and 5 ) or the pre-charged locking energy store 16 (see in particular 2 ) can be acted upon.

The locking device 32 is through the control device 22nd controllable in such a way that the one occupying its locking position by the pretensioned unlocking energy store 18th loaded carriage 30th to unlock the sash 12 is released to by the in the unlocking energy store 18th stored energy to be moved into its unlocking position (see 2 and 3 ).

The one to move the slide is supported here 30th in its unlocking position discharging unlocking energy storage 18th or release spring unit on the one hand on the slide 30th while on the other hand it is firmly supported (see again the 2 and 3 ).

In addition, the locking device is 32 by the control device 22nd controllable so that the slide 30th after its transfer from its locked position to its unlocked position is determined again in its unlocked position (cf. in particular 3 ).

In addition, the locking device 32 by the control device 22nd controllable in such a way that the one occupying its unlocking position by the pretensioned locking energy store 16 loaded carriage 30th to lock the sash 12 is released to by the pre-tensioned locking energy store 16 stored energy to be moved into its locking position (see 1 and 2 ).

In doing so, he supports himself to move the slide 30th in its locking position discharging locking energy storage 16 or locking spring unit on the one hand on the slide 30th while on the other hand it is firmly supported. In addition, the locking device 32 by the control device 22nd controllable so that the slide 30th after its transfer from its unlocked position to its locked position is determined again in its locked position (cf. in particular 2 ).

As from the 1 to 5 can also be seen, the locking energy storage 16 and the unlocking energy store 18th for example, via a particularly linearly displaceable via the coupling 24 bracket that can be coupled with the clamping device 34 or the like can in particular be prestressed at the same time.

In this case, the energy store is after prestressing 16 , 18th and that the bracket has been locked 34 by the locking device 32 the coat hanger 34 via the clutch that can be operated again in idle 24 from the jig 20th can be decoupled (see in particular again 5 ). As in particular again from the 5 can be seen, the locking energy storage 16 over the hanger 34 against the by the locking device 32 in its Unlocked position of the carriage 30th pre-tensionable.

In contrast, the unlocking energy store 18th over the hanger 34 against the housing 14th (see in particular again 5 ) or a stop fixed to the housing can be pre-tensioned.

In the present embodiment, the slide is 30th at by the locking device 32 fixed bracket 34 by the unloading, on the one hand on the slide 30th and on the other hand on the fixed bracket 34 supporting locking energy storage 16 relative to the bracket 34 slidable from its unlocked position to its locked position (see 1 and 2 ).

As can be seen from the 2 and 3 results is the sled 30th over that of the locking device 32 shared hanger 34 by the discharging, on the one hand on the released bracket 34 and on the other hand on the housing 14th or housing-fixed stop supporting unlocking energy storage 18th displaceable from its unlocked position into its locked position.

It is during a respective over the bracket 34 subsequent displacement of the slide 30th between its unlocking position and its locking position of the bracket 34 by the clutch operated in idle 24 from the jig 20th decoupled and the locking energy storage 16 relaxed.

Like that 1 to 5 also can be seen, is the bracket 34 in the present case, for example, with two mutually opposite edge sections 36 , 38 provided, between which the carriage 30th and the locking energy store 16 are arranged, the locking energy store 16 between one of the two edge sections 36 , 38 , namely the edge section 36 , and the sled 30th and the unlocking energy store 18th between the other edge portion 38 and the case 14th or housing-fixed stop is arranged.

The one between the mechanical energy stores 16 , 18th and the jig 20th provided coupling 24 can for example comprise a type of ballpoint pen mechanism.

In the present case it is the wing 12 for example around one around an axis 40 swiveling rotary wing.

In the different states of the locking drive 10 reproduce 1 to 5 is with the respective of the coupling 24 assigned arrow the direction of movement of the mechanism of the clutch is indicated.

It is in the representation according to 1 with the sash closed 12 the sled 30th found in its unlocked position, the locking energy storage on the fixed bracket 34 against the locked carriage 30th preloaded and the one on the housing 14th supported unlocking energy storage 18th against the fixed bracket 34 prestressed. In the 1 holds the locking device 32 left the bracket 34 and on the right the sledge 30th on position.

In the representation according to 2 is with the sash closed 12 the sled 30th found in its locking position, the locking energy storage 16 relaxed and the one on the case 14th supported unlocking energy storage 18th against the fixed bracket 34 prestressed.

In the representation according to 3 is with the sash still closed 12 the sled 30th found in its unlocked position after passing over the released bracket 34 through the discharging unlocking energy store 18th has been moved from its locking position to its unlocking position. The unlocking energy store 18th is thus discharged. After with the sledge 30th when the clutch is idling and the clamping device is disconnected 20th also the bracket 34 has been shifted accordingly, the locking energy store retains 16 its discharged state.

4th shows the locking drive 10 with the sash open and through the spring unit 26th towards the open wing 12 rebounded, back into the clutch 24 locked clamping device 20th . There is the sledge 30th found in its unlocked position while both the locking energy storage 16 as well as the unlocking energy store 18th are discharged or relaxed.

Finally shows 5 the locking drive 10 with the sash closed again 12 and by the closing wing 12 prestressed energy storage 16 , 18th . There is the sledge 30th found again in its unlocked position, the locking energy storage 16 over the fixed bracket 34 against the locked carriage 30th preloaded and the one on the housing 14th supported unlocking energy storage 18th against the fixed bracket 34 preloaded, so that the locking drive is already in the 1 assumes the initial state shown. While at by the closing wing 12 for preloading the energy storage 16 , 18th loaded clamping device 20th this via the clutch 24 with the released bracket 34 is coupled, the clamping device is disengaged again as soon as the locking device 32 engages, ie the bracket 34 with tensioned energy stores 16 , 18th by this locking device 22nd was found again.

With the locking drive according to the invention 10 locking and unlocking is guaranteed within a very short time down to a minimum of noise. Thus, during a respective locking or unlocking process for the relevant locking or unlocking of the window or door leaf 12 first an actuation of the locking fitting assigned to it by the energy stored in a respective energy store. Only then are the energy stores required for further locking and unlocking by a subsequent closing of the sash 12 summoned again.

List of reference symbols

10

Locking drive

12

wing

14th

casing

16

Interlocking energy storage

18th

Unlocking energy storage

20th

Jig

22nd

Control device

24

coupling

26th

Spring unit

28

Lever arrangement

30th

Sledge

32

Locking device

34

hanger

36

Edge section

38

Edge section

40

axis

Claims (18)

Locking drive (10) for locking and unlocking a sash (12) of a window or a door, with a housing (14), a mechanical locking energy store (16) for locking the sash (12) via the locking energy store (16) in this ) storable energy, a mechanical unlocking energy store (18) for unlocking the wing (12) via the energy that can be stored in this unlocking energy store (18), an energy store that can be acted upon by the closing wing (12) with the energy stores (16, 18) ) couplable tensioning device (20) for pre-tensioning the energy storage device (16, 18), and a control device (22), the pre-tensioned locking energy storage device (16) being discharged and unlocking via the control device (22) for locking the wing (12) of the wing (12) the discharge of the pretensioned unlocking energy store (18) can be triggered and the clamping device (20) via a coupling (24) to the energy store icher (16, 18) is connected, which when the wing (12) opens to cancel the coupling between the clamping device (20) and the energy stores (16, 18) can be operated in idle mode and via which when the wing (12) closes Clamping device (20) and the energy store (16, 18) for preloading the energy store (16, 18) can be coupled to one another by the closing wing (12). Locking drive after Claim 1 , characterized in that the locking energy store (16) comprises a locking spring unit which can be prestressed via the clamping device (20) and / or the unlocking energy store (18) comprises an unlocking spring unit which can be prestressed via the clamping device (20). Locking drive after Claim 1 or 2 , characterized in that the tensioning device (20) comprises a lever arrangement (28) acted upon by a pretensioned spring unit (26) in the direction of the wing (12). Locking drive according to one of the preceding claims, characterized in that it comprises a slide (30) which can be or is connected to a locking fitting of the sash (12) and which is mounted displaceably between a locking position and an unlocking position, in which it is supported by a locking device (32) can be determined and acted upon by the precharged unlocking energy store (18) and / or the precharged locking energy store (16). Locking drive after Claim 4 , characterized in that the locking device (32) can be controlled by the control device (22) in such a way that the slide (30) which occupies its locking position and is acted upon by the pretensioned unlocking energy store (18) is released for unlocking the sash (12), in order to be moved into its unlocking position by the energy stored in the unlocking energy store (18). Locking drive after Claim 5 , characterized in that the unlocking energy store (18) or unloading to move the carriage (30) into its unlocking position Unlocking spring unit is supported on the one hand on the slide (30) and on the other hand is firmly supported. Locking drive according to one of the preceding Claims 4 to 6th , characterized in that the locking device (32) can be controlled by the control device (22) in such a way that the carriage (30) is locked again in its unlocking position after it has been transferred from its locking position to its unlocking position. Locking drive according to one of the preceding Claims 4 to 7th , characterized in that the locking device (32) can be controlled by the control device (22) in such a way that the slide (30) which is in its unlocked position and is acted upon by the pretensioned locking energy store (16) is released for locking the sash (12), in order to be moved into its locking position by the energy stored in the prestressed locking energy store (16). Locking drive after Claim 8 , characterized in that the locking energy store (16) and / or locking spring unit, which is discharged to move the slide (30) into its locking position, is supported on the one hand on the slide (30) and on the other hand is firmly supported. Locking drive according to one of the Claims 4 to 9 I denote that the locking device (32) can be controlled by the control device (22) in such a way that the carriage (30) is locked in its locking position again after it has been transferred from its unlocked position to its locked position. Locking drive according to one of the Claims 4 to 9 , characterized in that the locking energy store (16) and the unlocking energy store (18) can be preloaded simultaneously via a linearly displaceable bracket (34) which can be coupled to the clamping device (20) via the coupling (24). Locking drive after Claim 11 , characterized in that after the energy storage device (16, 18) has been pre-tensioned and the bracket (34) has been fixed by the locking device (32), the bracket (34) is transferred from the clamping device (20) via the clutch (24) which can be operated again in idle mode can be decoupled. Locking drive after Claim 11 or 12 , characterized in that the locking energy store (12) can be pretensioned via the bracket (34) against the slide (30) which is fixed in its unlocked position by the locking device (32). Locking drive according to one of the Claims 11 to 13th , characterized in that the unlocking energy store (18) can be biased against the housing (14) or a stop fixed to the housing via the bracket (34). Locking drive according to one of the Claims 11 to 14th , characterized in that the carriage (30) when the bracket (34) is fixed by the locking device (32) by the discharging locking energy store (16) supported on the one hand on the carriage (30) and on the other hand on the fixed bracket (34) is displaceable to the bracket (34) from its unlocked position into its locked position. Locking drive according to one of the Claims 11 to 15th , characterized in that the slide (30) via the bracket (34) released by the locking device (32) by the unloading unlocking device supported on the one hand on the released bracket (34) and on the other hand on the housing (14) or the stop fixed to the housing Energy storage device (18) can be displaced from its unlocked position into its locked position. Locking drive after Claim 16 , characterized in that during a respective displacement of the carriage (30) between its unlocking position and its locking position taking place via the bracket (34), the bracket (34) is decoupled from the clamping device (20) by the idle clutch (24) and the Locking energy store (16) is relaxed. Locking drive according to one of the Claims 11 to 17th , characterized in that the bracket (34) is provided with two opposite edge sections (36, 38), between which the carriage (30) and the locking energy store (16) are arranged, the locking energy store (16) between one (36) of the two edge sections (36, 38) and the slide (30) and the unlocking energy store (18) is arranged between the other edge section (38) and the housing (14) or the housing-fixed stop.

Images