EP3524765A1 - Anti-burglary device that can be lowered - Google Patents

Abstract

A device for a door leaf or window wing has a Absenkleiste (2) and a lowering mechanism (4) for raising and lowering the Absenkleiste (2). The Absenkleiste (2) closes in a lowered state, a gap between a floor and the door or window sash. The device is a retractable burglar alarm and has at least one locking member (6, 7, 8), which prevents an increase of the lowered Absenkleiste (2) by external force. The device according to the invention enables effective burglar protection with simple means.

Description

TECHNICAL AREA

The present invention relates to a device for a door or a window with a Absenkleiste and a lowering mechanism for lowering and raising the Absenkleiste.

STATE OF THE ART

Automatically mechanically lowerable sealing devices are known. They are generally used for threshold-free doors to seal the lower gap between the door leaf and floor against draft, sound and light transmission. Proven has a seal, as for example in EP 0 338 974 is disclosed. It has a housing rail, a sealing strip which can be raised and lowered relative thereto and has a soft sealing profile and an actuating mechanism for automatically raising and lowering the sealing strip. In the lowered state, the soft sealing profile rests on the floor, thus sealing the gap between the door leaf and the floor.

The actuation of the sealing device is usually carried out automatically on one or two sides when closing and opening the door by the door closing a projecting spring-loaded release pin is pressed when closing the door. This activates the lowering mechanism. For example, leaf springs that run within the housing are bent so that they lower the sealing strip. When opening the door, the release bolt is released again and the sealing strip is raised again thanks to the restoring force of the springs.

Examples of corresponding lowering mechanisms are in EP 0 509 961 . DE 3 526 720 . DE 3 418 438 and DE 3 427 938 disclosed.

A particularly suitable lowering mechanism is in DE 19 516 530 described. It comprises the above-mentioned release bolt, to which a flat slider is attached. The slider is slidably held within the housing rail. The lowering mechanism further comprises at least two leaf springs, which are fixedly connected to the slider at a respective first end and are pivotably attached to the housing rail at a respective second end. In the middle region, the leaf springs are articulated by means of a respective plastic body with the sealing strip. For this purpose, a transverse bore is present for a first leaf spring, which is penetrated by a pin. For the second and following leaf spring slots are present, which are also interspersed by a pin. The transverse bore allows the fixation of the sealing strip on the leaf spring. The elongated holes allow the leaf springs to be deflected differently so that the sealing strip automatically adapts to the slope of the building floor.

The lowering seals described have proven themselves in practice. However, if they are used for exterior doors or doors to be secured specifically, they have the disadvantage that they offer a low burglary protection. The lowered sealing strip can be fitted with a suitable lever tool, e.g. a Geissfuss, slightly raise, so that access to the building interior can be created. For example, a wire can be pushed through the resulting gap up to the door handle or a camera pushed through the gap can give an insight into the interior of the building.

PRESENTATION OF THE INVENTION

It is therefore an object of the invention to provide a lowerable burglar alarm.

This object is achieved by a device having the features of claim 1.

The inventive device for a door leaf or a window sash, has a Absenkleiste and a lowering mechanism for raising and lowering the Absenkleiste on. The Absenkleiste closes in a lowered state a gap between a floor and the door or window sash. According to the invention it is a lowerable burglar alarm and it has a locking member which prevents an increase of the lowered Absenkleiste by external force.

This will prevent the device from creating a passage through the gap by means of a gullet or other suitable burglary tool. In addition, it prevents a wire loop or a camera can be led into the building interior.

The term "closes" is understood in this text so that the Absenkleiste rests on the ground or ends at a distance from the ground, that this distance from conventional burglary tools is not penetrable.

The lowering mechanism is preferably designed purely mechanically. Preferably, it corresponds to the mechanisms, as used in mechanical Absenkdichtungen for years. The Absenkleiste closes the gap over the entire width of the door. Preferably, the Absenkleiste also seals against the ground, at least as far as the light transmission. Preferably, however, it also seals against sound or air passage. Preferably, it is provided with an elastomeric sealing lip or an elastomeric coating or with a corresponding coating. In other embodiments, it has a metal surface. The device according to the invention can be used, in particular but not exclusively in the case when it is not itself sound-proofing, with a lowering seal of a known type or with a sliding seal of a known type in a door leaf. Preferably, both seals are arranged one behind the other, preferably with a space between them. Preferably, the device according to the invention is in this arrangement facing the building exterior side and the Absenkdichtung known type faces the building inside.

In a simple embodiment, the Absenkleiste is a stable bar, which is lowered by means of the lowering mechanism to the ground and there by means of a suitable locking means, such as a locking of the lowering mechanism, can not be lifted from the ground by external force, as long as the lowering mechanism is not released.

The activation and release of the lowering mechanism is preferably carried out in this, but also in the embodiments described below by means of an actuating device projecting in the longitudinal direction of the device, which is present when closing the door leaf on the door frame and so transmits a force and movement to the lowering mechanism. Only when this force is released again when opening the door leaf and a return movement is made possible, the blocking means also releases the lowering mechanism and / or the Absenkleiste to increase again.

Preferably, the at least one locking member is a locking support. Preferably, two, three or more locking supports are distributed over the length of the device.

The Arretierungsstütze makes preferably no contribution when lowering and / or lifting the Absenkleiste. However, it is brought when lowering into a position in which it absorbs external forces acting on the Absenkleiste in preferably exclusively vertical direction and thus prevents unauthorized lifting of the lowered Absenkleiste. Preferably, it forms with a resting on the floor web Absenkleiste a positive connection over a 90 ° angle.

Preferably, the Arretierungsstütze is designed so stable that it can counteract a stroke achieved by external force of up to a ton on the attack surface, preferably up to four tons. In the case of forwarding this force from the Arretierungsstütze to other components of the device and these components are created in such a way that they can withstand this force nondestructive. If no or hardly any force is forwarded, then these components can also be made simpler, for example, in the usual for lowering seals stability. Such components are, for example, a housing rail, a bearing or a pivot axis and / or a release button or bolt of the lowering mechanism.

Preferably, the device has a housing rail, wherein the Absenkleiste in the housing rail is held and relative to the housing rail and transversely to the longitudinal direction of the device can be raised and lowered. The housing rail and the lowering mechanism are preferably designed as in the aforementioned prior art. The housing rail is for example an aluminum profile rail and the lowering mechanism comprises a slide and at least one leaf spring.

However, the Absenkleiste is preferably designed differently than in the aforementioned prior art. It is preferably a rigid or rigid rail. Preferably, it has two parallel legs and a two webs connecting these lower web. The legs form the side walls which close the gap. The lower web is preferably in the lowered state of the Absenkleiste on the ground. In other embodiments, there is a minimum distance to the floor, which, however, is not penetrable for burglary tools. Preferably, this rail is an upwardly open trained U-profile. Preferably, it is made of aluminum, steel or other stable material. So that a gentle support on the floor is ensured and rattling is avoided, at least the outwardly directed side of the web of the Absenkleiste is preferably provided with a soft material, such as a silicone coating or a glued rubber or felt material.

Preferably, the Absenkleiste has a web for resting on the ground, wherein the at least one Arretierungsstütze rests in the lowered state of the Absenkleiste on an inner side of this web. The arresting support preferably extends within the Absenkleiste, i. in the case of a U-shaped profile between the two legs.

Preferably, the at least one Arretierungsstütze on a first end and a second end, wherein it is pivotally mounted in the region of its first end about a pivot axis and rests with its second end on the lowered Absenkleiste. Through this training she makes no contribution to lowering and raising the Absenkleiste, but is operated together with her.

Preferably, the at least one arresting support has a pivoting arm, wherein the pivoting axis is arranged in an upper region of the housing rail and wherein the second end of the swing arm is a free end.

Preferably, the at least one Arretierungsstütze extends with lowered Absenkleiste from the first end to the second end in a vertical direction and thus perpendicular to the longitudinal direction of the device. This blocks the further power transmission when an external, unauthorized lifting force acts on the lowered Absenkleiste. Thus, no force acts on the components of the lowering mechanism. These parts of the lowering mechanism can thus be formed with the usual parts of a lowering seal and thus relatively inexpensive.

The at least one arresting support preferably has a bearing area or a contact area, wherein the pivot axis and the contact area lie in a common vertical line. As a result, an external force is deflected exclusively in the vertical direction and thus in the at least one Arretierungsstütze. Pivoting movements and thus a bridging of the lock are prevented. The at least one Arretierungsstütze can thus be made relatively slim and still counteract a stroke of up to a ton, preferably up to four tons.

Preferably, the pivot axis in the longitudinal direction of the device is displaceable relative to the housing rail. As a result, it can be pivoted down when lowering the Absenkleiste in a simple manner and move when raising the Absenkleiste also back to their original raised position.

Preferably, the lowering mechanism comprises a slider which extends in the longitudinal direction of the device and which moves in this longitudinal direction upon actuation of the lowering mechanism, and wherein the at least one locking support is displaceable in the longitudinal direction together with the slider. The slider is usually a slider, as it is known in the art and described in the introduction.

In preferred embodiments, the pivot axis is arranged on the slide and displaceable together with this in the longitudinal direction. The pivot axis can attached directly to the slider, eg bolted or soldered. Preferably, however, a mounting block is present, which carries the pivot axis and which is fixed to the slider. For example, the slide passes through this mounting block. The mounting block is preferably made of plastic or aluminum.

Preferably, the pivot arm in the region of its free second end on a recess for receiving a locking pin. As a result, it is held in the lowered position of the Absenkleiste in position and he can not be deflected and raised by a lateral movement of the Absenkleiste. The locking pin is preferably arranged in the cavity of the Absenkleiste, preferably he is clamped between the legs and held fixed in position.

Preferably, a control pin is provided for raising the pivot arm when lifting the Absenkleiste. The control pin is preferably adjacent, but below the pivot axis. It is preferably fixedly arranged on the housing rail. The swivel arm is at the control pin and this serves to lift the swivel arm when raising the Absenkleiste also again. In addition, it serves as an upper stop, so that in the lowered state, the pivot arm can not be pivoted by longitudinal displacement of the Absenkleiste by external force. This means that together with the locking pin it secures the swivel arm in its downwardly pivoted position.

In another embodiment, a first rack is present, wherein the at least one arresting support comprises a first toothed ring gear, which unwinds along the first rack. The settlement is preferably carried out in a range of 70 ° to 110 ° to the longitudinal direction of the seal. As a result, the Arretierungsstütze moves while raising and lowering the Absenkleiste out. It is ensured in each lowered position that the Arretierungsstütze withstand external forces.

Preferably, the first rack is arranged on the slider and the pivot axis is stationary.

In a preferred embodiment, the Absenkleiste on a second rack, wherein the at least one Arretierungsstützte has a second toothed ring gear, which unwinds along the second rack. This arrangement also serves to guide the Arretierungsstütze in their movement and minimizes horizontal force vectors.

This second rack and the second toothed ring gear may be present instead of the first rack and the first toothed ring gear or in addition to this.

The various types of locking posts described above may also be combined in a common device, i. It can be used differently shaped Arretierungsstützen arranged in the longitudinal direction of the device one behind the other.

Further embodiments are given in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Figur 1a

eine schematische perspektivische Darstellung einer erfindungsgemässen Vorrichtung in einer ersten Ausführungsform, mit angehobener Absenkleiste;

Figur 1b

die Vorrichtung gemäss Figur 1a mit abgesenkter Absenkleiste;

Figur 2a

einen Querschnitt durch die Vorrichtung gemäss Figur 1a;

Figur 2b

einen Querschnitt durch die Vorrichtung gemäss Figur 1b;

Figur 3a

einen Teilschnitt durch die perspektivische Darstellung gemäss Figur 1a;

Figur 3b

einen Teilschnitt durch die perspektivische Darstellung gemäss Figur 1b;

Figur 4a

einen Längsschnitt durch einen Teil der Vorrichtung gemäss Figur 1a im angehobenen Zustand;

Figur 4b

einen Längsschnitt durch einen Teil der Vorrichtung gemäss Figur 1b im abgesenkten Zustand;

Figur 5a

einen Längsschnitt durch einen Teil einer Vorrichtung in einer zweiten Ausführungsform im angehobenen Zustand;

Figur 5b

einen Längsschnitt durch einen Teil der Vorrichtung gemäss Figur 5a in einem teilweise abgesenkten Zustand;

Figur 5c

einen Längsschnitt durch einen Teil der Vorrichtung gemäss Figur 5a in einem noch weiter abgesenkten Zustand;

Figur 5d

einen Längsschnitt durch einen Teil der Vorrichtung gemäss Figur 5a im vollständig abgesenkten Zustand;

Figur 6a

einen Längsschnitt durch einen Teil einer Vorrichtung in einer dritten Ausführungsform im angehobenen Zustand;

Figur 6b

einen Längsschnitt durch einen Teil der Vorrichtung gemäss Figur 6a in einem teilweise abgesenkten Zustand;

Figur 6c

einen Längsschnitt durch einen Teil der Vorrichtung gemäss Figur 6a in einem noch weiter abgesenkten Zustand und

Figur 6d

einen Längsschnitt durch einen Teil der Vorrichtung gemäss Figur 6a im vollständig abgesenkten Zustand.

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

FIG. 1a

a schematic perspective view of an inventive device in a first embodiment, with raised Absenkleiste;

FIG. 1b

the device according to FIG. 1a with lowered Absenkleiste;

FIG. 2a

a cross section through the device according to FIG. 1a ;

FIG. 2b

a cross section through the device according to FIG. 1b ;

FIG. 3a

a partial section through the perspective view according to FIG. 1a ;

FIG. 3b

a partial section through the perspective view according to FIG. 1b ;

FIG. 4a

a longitudinal section through a part of the device according to FIG. 1a in the raised state;

FIG. 4b

a longitudinal section through a part of the device according to FIG. 1b in the lowered state;

FIG. 5a

a longitudinal section through a part of a device in a second embodiment in the raised state;

FIG. 5b

a longitudinal section through a part of the device according to FIG. 5a in a partially lowered condition;

FIG. 5c

a longitudinal section through a part of the device according to FIG. 5a in a still lowered state;

FIG. 5d

a longitudinal section through a part of the device according to FIG. 5a in fully lowered condition;

FIG. 6a

a longitudinal section through part of a device in a third embodiment in the raised state;

FIG. 6b

a longitudinal section through a part of the device according to FIG. 6a in a partially lowered condition;

FIG. 6c

a longitudinal section through a part of the device according to FIG. 6a in a still lowered state and

FIG. 6d

a longitudinal section through a part of the device according to FIG. 6a in fully lowered condition.

DESCRIPTION OF PREFERRED EMBODIMENTS

In the FIGS. 1a to 4b a first embodiment of the inventive device is shown. As in FIG. 1a It can be seen, it has a housing rail 1, a liftable and lowered therein held Absenkleiste 2, an actuating bolt or button 3, a lowering mechanism 4 and mounting bracket 5 on.

The housing rail 1 is preferably a U-shaped, downwardly open profile, preferably made of aluminum. The housing rails 1 can be fixed by means of the mounting brackets 5 on a lower end side of a window or door leaf or in a groove arranged therein. Other types of attachment and other types of fasteners are known in the art and can be used here as well.

The Absenkleiste 2 is preferably also a U-shaped, but upwardly open trained profile. Preferably, the Absenkleiste 2 made of aluminum or steel or another rigid or rigid material. It has two parallel legs and these two legs connecting web, which rests in the lowered state on a floor. The web may be provided with a soft material to prevent rattling, e.g. a silicone coating or a rubber, foam or felt pad. Rattling can also be avoided if the Absenkleiste is lowered only up to a minimum distance from the ground.

The Absenkleiste 2 is preferably designed so that it forms a stiff barrier in the lowered state over the entire width of the door and can not be pressed by external forces. In addition, it preferably has no exposed in the lowered state outside the housing rail 1 through holes.

The actuating knob 3 is the housing rail 1 before. It is connected to the lowering mechanism 4, which partially in the FIGS. 3a and 3b is recognizable. The lowering mechanism preferably comprises a slide, not shown here, which is connected via an actuating rod 42 with the operating knob 3. The slider extends over the length of the housing rail 1 and thus the device.

The lowering mechanism 4 also has at least one leaf spring 40. Preferably, two or more leaf springs 40 are arranged one behind the other in the longitudinal direction L of the device. Each leaf spring 40 is preferably connected to a first end on the slide, with a second end to the housing rail 1 and in a central region with the Absenkleiste 2. In these examples, a fastening block 41, preferably made of plastic or aluminum, is fixed in the interior of the Absenkleiste 2 for the latter compound. The lowering mechanism thus corresponds to the known, initially mentioned lowering mechanisms. However, it is also possible to use other lowering mechanisms with the blocking agents according to the invention.

In the FIGS. 1a . 2a and 3a the Absenkleiste is shown in the raised state. The operating button 3 is present, ie the door is open. In the Figures 1b . 2 B and 3b a situation is shown, as it results with the door closed. The operating knob 3 is at the door frame and is pressed by this in the housing rail 1. The leaf springs 40 are stretched as shown in FIG FIG. 3b is shown. As a result, the Absenkleiste 2 is lowered so that it closes the gap between the door leaf bottom and bottom. Preferably, it is designed so that it also seals.

As in the FIGS. 3a to 4b can be clearly seen, the inventive device comprises at least one, here four simple Arretierungsstützen 6. These simple Arretierungsstützen 6 each have a pivot arm 60, which projects into the interior of the Absenkleiste 2. In the FIGS. 3a and 3b the Absenkleiste 2 is only partially shown so that their interior is recognizable. In the FIGS. 4a and 4b The cutting plane runs through this interior.

The pivot arm 60 is pivotally held on a bearing, here called pivot axis 63. The pivot axis 63 is fixed to the housing rail 1 and extends in the horizontal and transverse to the longitudinal direction L of the device. The pivot axis 63 is held in a bearing block 43 which is fixedly connected to the slide. As a result, the bearing or the pivot axis 63 is displaceable by means of the actuating knob 3 in the longitudinal direction L of the device.

Spaced apart and laterally offset from the pivot axis 63, a control pin 62 is held fixed in position in the housing rail. It also extends in the horizontal and transverse to the longitudinal direction L of the device. In the lower part of the Absenkleiste 2 is also a locking pin 64 is present, which is aligned the same as the control pin 62. The Absenkleiste 2 has in the upper region on both sides, ie in both legs, depending on a recess 20, which the control pin 62 at least in raised state prevails. This is in FIG. 4a good to see.

The swing arm 60 has a first end which is penetrated by the pivot axis 63, and a second end which is free. The end face of this second end forms a contact surface 600, which in the lowered state, the inside of the Absenkleiste 2, more precisely, the inside of the closed web, contacted.

In the region of the free second end, a recess 61 is also provided, which receives the locking pin 64 in the lowered state.

As by the synopsis of FIGS. 4a and 4b is clearly visible, the pivot arm 60 is located with the door open and raised Absenkleiste 2 in an upwardly pivoted position. The control pin 62 passes through the recess 20 of the Absenkleiste 2 and supports the pivot arm 60th

If the door leaf is closed, the operating knob 3 is pressed and the slider moves along with the pivot axis along the longitudinal direction of the housing rail 1. The pivot arm 60 moves around the control pin 62 around until it engages around the locking pin 64 with its lower end. This is in FIG. 4b shown.

In FIG. 4a However, the stroke of the device is preferably adjusted so that the contact surface 600 touches the surface or only a minimum distance is present, which prevents a sufficient increase of the Absenkleiste means burglary tool.

If the door is opened again, the slider pushes the pivot axis 63 back in the other direction and the pivot arm 60 is raised thanks to the control pin 62 again.

This has now been explained with reference to a swivel arm. Of course, all the pivot arms move synchronously with each other, as they are individually mounted on their respective pivot axes on the slider.

In the FIGS. 5a to 5d a second embodiment of the inventive device is shown. The lowering mechanism is the same as described above. The other components are the same. Instead of the simple Arretierungsstütze here, however, a simple toothed Arretierungsstütze 7 is present. Also in this embodiment, a plurality of such Arretierungsstützen 7 can be arranged in the longitudinal direction L one behind the other.

The single-toothed arresting support 7 has a pivoting arm 70 with a first end and a second free end. The pivot arm 70 is pivotable about a pivot axis 73. However, the pivot axis 73 is stationary and fixed to the housing rail 1.

There is an upper rack 71, which is arranged on the slide and is displaceable together with this in the longitudinal direction L of the device. The upper end of the swing arm 70 is formed as a toothed ring gear 701. The Zahnteilkranz 701 unwinds with longitudinal displacement of the slide along the teeth 710 of the upper rack 71 and thereby pivots the pivot arm 70 about the pivot axis 73. The free second end of the pivot arm 70 is formed as a curved contact surface 70 which extends on the inner surface of the Absperleiste 2 rolls, depending on the variant rests against the inner surface or is at a minimum distance to it. This embodiment does not require control or locking pins.

In the embodiment according to the FIGS. 6a to 6d Not only is a first upper toothing available, but also a lower toothing. The device in turn comprises the components already described, wherein a double-toothed Arretierungsstütze 8 is present. A pivot arm 80 has an upper gear rim 801 and a lower gear rim 800, which forms the contact surface. The pivot arm 80 is in turn pivotable about a pivotally mounted in the housing rail 1 fixed pivot axis 83. On the slider is an upper rack 81 with teeth 810 and on the Absenkleiste, more precisely on the inner surface of the web, a second lower rack 84 is arranged. As can be seen by the synopsis of these figures, no control pin or locking pin is necessary here. These Arrangement prevents horizontal displacement of the sealing strip by burglary tool and thus a horizontal displacement, ie slipping, the Arretierungsstütze.

The device according to the invention enables effective burglar protection with simple means. <B> LIST OF REFERENCES </ b> 1 housing rail 7 toothed locking support 2 Absenkleiste 70 swivel arm 20 recess 700 contact area 3 release button 701 Toothed part Kranz 4 lowering 71 upper rack 40 leaf spring 710 tooth 41 mounting block 73 swivel axis 42 actuating rod 43 bearing block 8th double-toothed arresting support 5 mounting brackets 80 swivel arm 6 simple locking support 800 lower gear 60 swivel arm 801 Upper toothed ring gear 600 contact area 81 upper rack 61 recess 810 tooth 62 control pin 83 swivel axis 63 swivel axis 84 lower rack 64 locking pin L longitudinal direction

Claims (17)

Device for a door leaf or a window sash, wherein the device has a Absenkleiste (2) and a lowering mechanism (4) for raising and lowering the Absenkleiste (2), wherein the Absenkleiste (2) in a lowered state, a gap between a bottom and the Door or window sash closes, characterized in that the device is a lowerable burglar alarm and that the device has at least one locking member (6, 7, 8) which prevents an increase of the lowered Absenkleiste (2) by external force. Device according to claim 1, wherein the at least one locking member is a locking support (6, 7, 8). Apparatus according to claim 2, wherein the device comprises a housing rail (1) and wherein the Absenkleiste (2) in the housing rail (1) is held and relative to the housing rail (1) and transversely to the longitudinal direction (L) of the device is raised and lowered. Device according to one of claims 2 or 3, wherein the Absenkleiste (2) has a web for resting on the ground and wherein the at least one Arretierungsstütze (6, 7, 8) rests in the lowered state of the Absenkleiste (2) on an inner side of this web , Device according to one of claims 2 to 4, wherein the at least one Arretierungsstütze (6, 7, 8) has a first end and a second end, wherein it is pivotally mounted in the region of its first end about a pivot axis (63, 73, 83) and rests with its second end on the lowered Absenkleiste (2). Device according to claim 5, wherein the at least one arresting support (6, 7, 8) has a pivoting arm (60, 70, 80), the pivoting axis (63, 73, 83) being arranged in an upper region of the housing rail (1) and the second one End of the pivot arm (60, 70, 80) is a free end. Device according to one of claims 5 or 6, wherein the at least one Arretierungsstütze (60, 70, 80) extends with lowered Absenkleiste (2) from the first end to the second end in a vertical direction and thus perpendicular to the longitudinal direction (L) of the device. The device of claim 7, wherein the at least one detent support (60, 70, 80) has a contact surface (600, 700, 800) and wherein the pivot axis and the contact surface (600, 700, 800) lie in a common vertical line. Device according to one of claims 5 to 8, wherein the pivot axis (63, 73, 83) in the longitudinal direction (L) of the device relative to the housing rail (1) is displaceable. Device according to one of claims 1 to 9, wherein the lowering mechanism (4) comprises a slider which extends in the longitudinal direction (L) of the device and which moves in this longitudinal direction (L) upon actuation of the lowering mechanism (4), and wherein at least one Arretierungsstütze (6, 7, 8) together with the slider in the longitudinal direction (L) is displaceable. Apparatus according to claim 10, wherein the pivot axis (63) is arranged on the slide and is displaceable together with the latter in the longitudinal direction (L). Apparatus according to claim 11, wherein the pivot arm (60) has a recess (61) in the region of its free second end for receiving a locking pin (64). Device according to one of claims 11 or 12, wherein a control pin (62) is provided for raising the pivot arm (60) when lifting the Absenkleiste (2). Device according to one of claims 5 to 10, wherein a first rack (71, 81) is present and wherein the at least one arresting support (7, 8) has a first Particle ring (701, 801) which unwinds along the first rack (71, 81). Apparatus according to claim 14, wherein the first rack (71, 81) is disposed on the slider and the pivot axis (73, 83) is stationary. Device according to one of claims 5 to 10, wherein the Absenkleiste (2) has a second rack (84) and wherein the at least one Arretierungsstützte (8) has a second Zahnteilkranz (800), which unwinds along the second rack (84). A device according to claims 14 and 16, wherein the device comprises both the first and the second toothed racks (71, 81, 84) and the first and the second toothed ring gear (701, 801, 800).

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