AT510683B1 - DEVICE FOR CONTROLLING THE CLOSURE OF DOUBLE SLEEPING DOORS - Google Patents

Abstract

The invention relates to a device for controlling the closing sequence of two-leaf, a swinging active leaf (1) and a swinging passive leaf (2) comprising swing doors by means of a slide rail closer, wherein the closing member (3) belonging to the active leaf, in the slide (7) displaceable Sliding block (5) is connected to a locking bar (20) and wherein for holding the active leaf (1) in the open waiting position movement of this locking bar (20) is blocked by a locking device which is supported against relative movement to the slide rail (7) in the rail longitudinal direction and by means of a locking part (12) with the locking rod (20) can be brought into rigid connection, said rigid connection by opening the inactive leaf (2) producible and by closing the passive leaf is lösbar.Die rigid connection between locking part (12) and locking rod ( 20) can be produced by the locking device, while the Sp Ridge (20) relative to the slide rail (7) moves towards that end of the slide rail (7), which is closer to the pivot axis of the active leaf (1).

Description

Austrian Patent Office AT510 683B1 2012-06-15

Description: The invention relates to a device for controlling the closing sequence of double-leaf swing doors by means of a slide rail closer, wherein one door leaf is an underfolding, so-called passive leaf and the second wing is an overturning, so-called active leaf.

The device according to the invention is particularly advantageous for such doors, which have to meet a security claim, especially for fire doors with so-called panic and escape function.

Fire doors must prevent over a certain specified by respective standard duration, the spread of fire from the room on one side of the room on the other side of the door. Of course they can only do that if they are properly closed. Due to a fold, ie a projection, by which the active leaf protrudes beyond the fixed leaf, it is necessary for the proper closing of a double-leaf fire door that the wings are closed in the correct order. This is the case when, from the open state, the passive leaf is first brought into the closed position and only then is the active leaf. To ensure that this takes place safely even in case of fire, the wings are not only provided with a drive which automatically moves the door in the closed position, but also with a device for controlling the closing sequence. This device is intended to cause the two door leaves to be closed automatically in the correct order.

When open wing even open active leaf, for example, driven by a spring, a leading edge of the closing movement performs, so this closing movement is stopped by the action of the device for controlling the closing sequence at a certain opening angle until the inactive leaf in its closing movement, the active leaf rushes far enough ahead, so that the correct closing sequence is ensured safely.

In order for this closing sequence control can work, the active leaf must be opened at least open to that opening angle at the opening of the inactive leaf, at which he must wait while closing the passive leaf before he himself can be closed. The co-opening of the active leaf is typically achieved by means of a driver flap; this is a part which is usually pivotally mounted on the inactive leaf, projects to the moving leaf and pushes it in the first part of the opening movement of the passive leaf in an opening movement in front of him. Such a flap shows the AT 010 451 U1.

In slide rail door closers protrudes a swivel arm from a door to a sliding block, which is mounted longitudinally movably in a arranged on the upper frame part of the door frame slide rail. With the door closed, that end of the swivel arm, which is fastened to the door leaf, lies closer to the pivot axis of the door leaf than that end of the swivel arm which is connected to the sliding block. During the majority of the closing pivoting movement of the door leaf, the sliding block slides in the slide rail away from the axis of rotation of the door leaf.

DE 36 04 091 A1 and EP 1 801 337 B1 show a closing sequence control associated holding device for the active leaf of a two-leaf, equipped with slide rail door closer door. On the belonging to the active leaf sliding block of Gleitschienentürschließers in the slide parallel to this extending so-called locking rod is attached. This rod is passed through a bore of a substantially stationary arranged clamping plate. The bore and the rod cross-section form a clearance fit when the plane of the clamping plate is aligned approximately normal to the rod longitudinal direction. As soon as the clamping plate is swiveled, the clamping plate and locking bar are jammed together. The clamping plate is pivotally mounted on a substantially fixedly arranged part, wherein the pivot axis normal to the locking bar, in addition to 1/14 Austrian Patent Office AT510 683B1 2012-06-15 runs this. On the clamping plate acts an elastic spring which "seeks" to pivot the clamping plate in the direction in which the locking bar is moved when the active leaf is closed. When the inactive leaf is closed, the spring counteracts a release bolt, which rotates the clamping plate counter to the action of said spring into a position in which the locking clasp can slide well through the bore in the clamping plate. When the inactive leaf is open, closing movement of the active leaf is prevented by the clamping plate, since this is pivoted by said spring in the clamping position. Opening movement of the active leaf is already possible because it causes friction between locking bar and clamping plate itself that the jamming between these two parts is released. So that movement of the active leaf is not abruptly stopped by clamping and thus does not cause damage to parts at high torques on the moving leaf, the clamping plate is not really anchored fixedly to the slide, but via a spring-mounted cage. When braking the closing movement of the active leaf according to said clamping the cage is moved with the clamping plate against the action of a spring, so that the movement is resiliently braked. If the cage with the clamping plate is moved in this way over a certain minimum distance - which is equivalent to that a certain level of force is exceeded -, the clamping plate abuts the above-mentioned release bolt and the clamping is released.

The documents EP 1 801 336 A1, EP 0458 034 A1, EP 1 258 590 A1, EP 1 703 061 A2 and EP 1 233 133 A2 each show devices for the regulation of the closing sequence of double-leaf, a fixed leaf and a moving leaf swing doors. The swing doors are equipped with slide rail closers. In each case belonging to the closer of the active leaf, slidable in the slide sliding block is connected to a extending in Gleitschienenlängsrichtung locking bar or connectable. For the required locking of the closing movement of the active leaf when the inactive leaf is open, a blocking device acts on this blocking rod such that movement of it relative to the sliding rail is blocked away from the gangway end of the sliding rail. Blocking movement of the locking bar also blocks movement of the sliding block connected to it and thus also closing movement of the associated active leaf.

A disadvantage of the discussed known types, that it is essential for the function that the holding of the active leaf takes place in such an angular range at which during the closing movement of the active leaf belonging to the active leaf sliding block in the slide of Gleitschienentürschließers of the The axis of rotation of the active leaf is moved away. In many installation situations of double-leaf doors, this requires that the active leaf must be kept very open and kept very wide open when the fixed leaf is opened. As a result, this results in unsightly large driver fingers, which are arranged on the inactive leaf and protrude toward the active leaf, so that they force it into an opening movement of the inactive leaf in a sufficiently wide opening movement.

The object underlying the invention is to improve the known, based on slide rail closures devices for such double-wing swing doors, in which the belonging to a door sliding block during the last part of the closing movement of the door leaf in the slide on the axis of rotation Door leaf is moved to. The improvement is to be achieved that the Auslangen can be found when opening the inactive leaf with a smaller minimum opening angle of the active leaf.

To solve the problem is assumed by a closing sequence control with a slide rail door closer, wherein the sliding block of the active leaf is at least indirectly connected to a locking bar which extends parallel to the slide rail and wherein for holding the active leaf in the open waiting position, the movement of the locking bar is blocked on a blocking part until the blockage is released by closing the inactive leaf.

According to the invention it is proposed to provide a locking device which is capable of a movement of the connected to the sliding block of the active leaf barrier barrier AT510 683B1 2012-06-15

Rod on the axis of rotation of the active leaf to block when the inactive leaf is open.

The invention will be illustrated by means of drawings: Fig. 1: shows in partial sectional view from above a double-winged swing door to which the device according to the invention is applicable.

Fig. 2: Is a diagram in which the position "S " the locking bar connected to the sliding block of the grand piano above the opening angle "a " of the active wing is shown.

Fig. 3: shows an exemplary locking device according to the invention in a vividly stylized representation in partial sectional view, the viewing direction is normal to the longitudinal direction of the locking bar 20.

Fig. 4: Shows in exploded view a detailed auskonstruierte, exemplary, inventively usable locking device.

5 shows a partial sectional view of a schematic diagram of a detail of an advantageously further developed exemplary blocking device which can be used according to the invention.

The double-wing hinged door according to FIG. 1 has an overturning active leaf 1 and an undercut passive leaf 2. The slide rail door closer comprises a slide rail 7, and in each case a closer 3, 4 on a door leaf, which are connected via a respective pivot arm, each with a sliding block 5, 6, which are linearly displaceable in the slide rail 7.

While in the pivotal movement of a door, the straight extension (dotted lines in Fig. 1) of the pivot arm of the associated door closer exceeds the axis of rotation of the door, the direction of movement of the associated sliding block in the slide to. During the pivoting movement of a door leaf from a completely closed position to a completely open position, the associated sliding block is first displaced somewhat towards the center of the slide rail and then far away. During the closing movement of a door leaf, the reverse sliding movement of the associated sliding block takes place.

Fig. 2 shows qualitatively (not to scale) the relationship between the opening angle α of a door leaf and the distance S of the associated sliding block from the axis of rotation of the respective door next point to the sliding block can slide at wide open door. Point "b" marks the dead center of the Gleitsteinbewegung, ie the point at which reverses the direction of movement of the sliding block during continuous opening or closing movement of the door leaf. In the construction methods according to the prior art discussed, it was necessary to set the required stopping point of the closing movement of the active leaf above the dead center b, for example to point c, ie to a relatively large opening angle. According to the construction according to the invention, it can now be placed at a point below the dead center b, for example on the point a.

In Fig. 3, an advantageous example of a locking device according to the invention is shown.

The locking rod 20 is connected with its left end of FIG. 3 with the (not shown in FIG. 3) sliding block 5 of the active leaf. It is aligned parallel to the slide rail 7 (not shown in FIG. 3) and typically extends in the groove of the slide rail, which is typically designed as a U-profile.

During the opening movement of the active leaf, the locking rod 20 is moved as shown in FIG. 2 only a short distance to the right, then a greater distance to the left. The closing movement of the active leaf causes the reverse movement of the locking bar.

The inventively usable locking device has a base part 10, with which it is anchored (substantially) stationary with respect to the slide rail. On the base part 10, two clamping plate holders 11 are guided linearly movable parallel to the locking bar 20, the range of movement being limited by end stops, and the two clamping plate holders by a compression spring arranged between them 21 pressed apart and thus pressed in the absence of other forces against each end stop of the linear guide on the base member 10. The locking bar 2 0 protrudes through both clamping plate holder 11 therethrough. In each clamping plate holder 11 each have a clamping plate 12 is arranged, through which the locking rod 20 also protrudes. The clamping plates 12 are pivotally held in the respective holder 11, wherein the pivot axis of the platens runs past the locking bar. If - as shown - do not press the release lever 14.1, 14.2 opposite to the clamping plate 12, the clamping plates are pivoted by a respective compression spring 13 from the normal plane to the direction of the locking bar out that they with the edges of their opening on the lateral surface of the locking bar come under pressure to concern. By this concern locking bar 20 and clamping plates are clamped against relative movement in one of the two directions parallel to the slide rail. The locking bar is then no longer displaceable relative to the clamping plate in the direction in which the clamping plate is pivoted out about its pivot axis from the position in which its plane is normal to the longitudinal direction of the locking bar. Relative movement of the locking bar relative to the clamping plate in the opposite direction is not clamped.

Since the two clamping plates 12 are pivoted in opposite directions from the normal plane to the direction of the locking bar out, they can block both relative directions of movement of the locking bar together. According to FIG. 3, the left clamping plate according to FIG. 3 blocks movement of the locking bar to the right; the right clamping plate locks movement of the locking bar to the left.

By a respective trigger lever 14.1, 14.2, the lock can be canceled by a clamping plate. The release levers 14.1, 14.2 are held linearly displaceable on the base part 10. They can be pressed by the compression springs 13 opposite side to the respective clamping plate 12 and this pivot back into the normal plane to the direction of the locking bar, so that so that the deadlock is lifted and the locking rod is linearly movable again.

Movement of the release lever 14.1, 14.2 away from the clamping plate 12 is blocked after a short distance by a stop on the base part 10.

With some effort, the locking rod 20 can be moved despite jamming with a clamping plate 12 in its longitudinal direction by the respective clamping clamping plate 12 and with this the associated clamping plate holder 11 against the action of the compression spring 21 are moved. With strong drive the movement of the locking rod, the clamping clamping plate 12 is moved to the associated release lever 14.1 and 14.2, pressed against this and released by this from the clamped position, so that the movement of the locking bar is thus released until a further jamming of the clamping plate , Thus, the overload protection is realized.

Movement of the release lever 14.1, 14.2 to the clamping plate to and thus loosening the deadlock between clamping plate 12 and locking rod 20 is intended triggered by closing the inactive leaf 2, so that when the passive leaf closed the release lever 14.1, 14.2 are moved to the clamping plate 12, that they are pivoted so that they do not pinch the locking bar 20. For this movement of the inactive leaf is translated in motion of a connecting part 16 to a release lever. For this translation, there are in the context of professional trade and according to the state of the art many possibilities of realization, which is why it will not be discussed further here.

The two release levers 14.1, 14.2 are - for example - via a two-armed, rotatably mounted on the base member 10 lever 15 connected to each other, so that movement of a release lever is transmitted to the respective other release lever and thus both clamping plates 12 by a movement of a single connecting part 16th can be triggered. When the inactive leaf 2 is closed, the release levers 14.1, 14.2 are thus moved to the clamping plates so that they can not jam, whereby movement of the blocking rod 20 is freely possible, which means that the active leaf is free to pivot.

If you open the passive leaf with the active leaf closed, the leaf is forcibly mitgeöff by a driver until the driver device disengaged. Due to the fact that then the release lever 14.1, 14.2 are withdrawn from the clamping plate 12, the clamping plates are clamped to the locking bar and movement of the active leaf is only possible by overcoming the force of the spring 21 and possibly under the overload protection.

If the inactive leaf is closed again, which is due to the fact that the active leaf is held in an open position, is easily possible, press the release lever 14.1, 14.2 back to the clamping plates; Movement of the locking rod 20) and thus the active leaf is released and the leaf can be closed.

It is advantageous, the locking bar 20 - as shown in Fig. 3 - on a side facing away from the sliding block of the active wing longitudinal region 20.1 with smaller cross-sectional dimensions than at the closer lying on the sliding longitudinal area. In the longitudinal region 20.1 with the smaller cross-sectional area, the locking rod 20 is not clamped to the clamping plate 12, since the deadlock works only at approximately the right angle between the plane of the clamping plate and the longitudinal direction of the rod and for the clamping plates are pivoted too far. By locking device and taper on the locking rod 20 are arranged aligned with each other, it is achieved that from a certain minimum opening angle of the active leaf only the longitudinal portion 20.1 of the locking bar with reduced cross-sectional area passes through the clamping plate 12. Thus, in this opening angle range of the active leaf can be pivoted unmoved by the locking device even when the inactive leaf is open. If one were to omit the tapered longitudinal portion of the locking bar at all and thus would make the locking bar shorter, the movement of the locking bar would be more difficult to guide.

4 has the same functional principle as the locking device of Fig. 3. Items with the same functional principle as the items in Fig. 3 are therefore simplified in Fig. 4 with the same position number as in Fig. 3 , Only additions and differences compared to the embodiment of FIG. 3 are briefly mentioned: The base part 10 is to be fastened by means of two screws 101 to the slide rail (not shown). The transmission of the triggering movement through the stationary leaf on the locking device via a pivotally mounted on the base member 10 lever 116 which is pivotally connected to the release lever 14.1. The release lever 14.1, 14.2 are in the absence of other forces by elastic springs 102 which exert a force between the release levers and the base member 10, urged in that position in which they do not abut a clamping plate 12. The compression spring 21 is held over sleeve parts 103 in a well-defined position between the clamping plate holders 11.

If one removes a clamping plate 12 in the locking device according to FIG. 3, the remaining locking device - depending on which clamping plate one leaves - only exactly for holding the active leaf left or right of the dead center (b) shown in FIG. 2 replaceable , So for holding the locking rod (20) against only one direction of movement.

If you want to use only a clamping plate anyway, so you can simplify the construction of the locking device with respect to the form shown a bit more. You then need only provide a single clamping plate holder and must also take precautions so that the clamp can act either in one or the other direction.

It can be provided to perform the clamping plate holder including content (clamping plate 12 and spring 13) mounted in two mutually offset by 180 "positions. This is feasible, but requires some assembly work when switching between the two positions. As outlined in FIG. 5, the spring 113, which presses on the clamping plate in order to move it into a position that is clamped with the locking bar 20, can be arranged so that it selectively moves the clamping plate in one or the other blocking division. According to FIG. 5, this is achieved by arranging the pivoting axis of the clamping plate 20, the clamping plate 12 itself and the pressure-biased spring 113 in a straight line, which is normal to the longitudinal direction of the locking bar and not parallel to the orientation of the pivot axis of the clamping plate lies. The clamping plate 12 is then - as shown in broken lines in Fig. 5 - bend out of said straight line in one or the other direction about its pivot axis and reach a clamping position. Typically, by pressure by means of a lever (not shown) on one side of the plate, this can be swung from the one blocking division into the other blocking division.

The switching between the two possible locking pitches of the clamping plate can be triggered, for example, by the sliding block of the moving wing pivoting arm, in an advantageous construction when it approaches the dead center of its movement (point "b" in FIG. 2).

That spring (21 according to FIGS. 3 and 4), which acts between base part and clamping plate holder and by means of which the overload protection is realized, must also be mountable in two different positions, so that it is possible to choose which of the two to the blocking rod parallel directions, it seeks to "shift the clamp plate holder relative to the slide rail".

One can combine a simple, non-reversible clamping plate holder and the spring, which serves as overload protection to form an assembly and this with respect to the orientation of the longitudinal direction of the slide in two mutually 180 ° rotatable positions on or in the slide rail make mountable.

Likewise, one can realize with two springs on both sides between a single base part and Klemmplättchenhalterwirkend acting on both sides overload protection.

If allow the geometric conditions, it is preferable to align the thus acting only in one direction locking device so that they move the connected to the sliding block of the active leaf locking bar on the axis of rotation of the active leaf, blocked to the active leaf in a waiting position (point "a" according to Fig. 2). In this waiting position, the swing arm of the active leaf is loaded on train and by this train, the slide of the door closer to the wall on which it is located, pressed. In addition to an advantageously small opening angle of the active leaf can be found even with smaller dimensions of the swivel arm and the slide Auslangen than in the opposite case (point "b" as shown in FIG. 2) in which the swivel arm loaded on pressure and thus vulnerable to kinking and the the slide is pushed away from the wall and thus loaded on bending and in which the attachment points are heavily loaded on the wall. The loads are extremely high when the pacer standby position is in the range of the opening angle at which the sliding block of the active leaf is approximately at its movement dead center (point "c" in the diagram of FIG. 2).

By using both clamping plates, the locking device can be used for both areas without, moreover, requiring a complicated fine adjustment to the respective geometric conditions on a door.

The locking device according to the invention is even without blocking in the dead center region of the movement of the sliding block of the active leaf (point "c" in the diagram of FIG. 2), as regardless of which direction the locking bar is moved relative to the slide, anyway one of the two plates 12 is stuck. That is, even if when opening the inactive leaf of the active leaf is mitgeöffnet up to that opening angle range in which the sliding block of the active leaf either exactly reached its Bewegungsstotpunkt or just before or just after, is still the active leaf in this 6/14 Austrian Patent Office AT510 683B1 2012-06-15 opening angle range is maintained without causing any damage to any parts.

The locking device according to the invention is thus very universal and extremely easy to install.

So far, the tilting of a clamping plate has been described as a blocking principle of the inventively usable locking device. It should be expressly noted that within the scope of the invention, the use of other locking mechanisms is possible. Without claiming to be exhaustive, examples include: A wedge can be inserted between a part fixed to the slide rail-directly or indirectly via an elastic spring-and a lateral surface part of the lock bar passing through this part in order to fix the lock rod and pushed out or pulled to release the locking bar.

- It may be a lateral surface region of the locking bar by a flexible body, which has a strong rubbing surface, be wrapped, wherein the flexible body against movement in the longitudinal direction of the slide - is held directly or indirectly via an elastic spring. In order to block the lock bar, the wrap is tightened to loosen the lock bar, the wrap is loosened.

- The locking bar can run between jaws, similar to the jaws of a pair of pliers, these jaws are held directly or indirectly via an elastic spring against movement along the slide rail. To lock the locking bar, the jaws are moved together so that they pinch the locking bar between them. To release the locking bar, the jaws are moved apart again.

- The lateral surface of the locking bar may have a toothing or recesses or elevations, ie a structure with which locks for locking the locking bar a part which is held directly or indirectly via an elastic spring against movement along the slide rail. For disengaging the locking bar, the locking is released again. REFERENCE DIRECTORY: 1 active leaf 2 fixed leaf 3 normally-open leaf 4 passive leaf sliding block 6 passive leaf sliding block 7 slide rail 10 base part of locking device 11 clamping plate holder 12 clamping plate (locking part) 13 compression spring 14.1 release lever 14.2 release lever 20 blocking rod 20.1 longitudinal section with reduced cross-sectional dimensions 101 screw 102 spring 103 sleeve part 113 spring 116 lever 7/14

Claims (10)

Austrian Patent Office AT510 683B1 2012-06-15 Claims 1. A device for controlling the closing sequence of double-winged swing doors, - one of the door leaves being a knock-down, so-called passive leaf (1) and the second wing being a swinging, so-called moving leaf (2) - Wherein each of the door leaves (1, 2), in each case a pivot arm to a respective sliding block (5, 6) projects, - both sliding blocks (5, 6) mounted longitudinally movably in a arranged on the upper frame part of the door frame slide rail (7) are - with the door closed (1, 2) that end of the pivot arm, which is attached to this door (1, 2), closer to the pivot axis of this door (1.2), as that end of this arm, which with a sliding block (5, 6) is connected, - wherein the sliding block (5) connected via a pivoting arm to the moving leaf (1) is connected to a blocking rod (20) which extends parallel to the sliding rail ( 7), - wherein the holding of the active leaf (1) in an open waiting position can be forced by the movement of the locking rod (20) relative to the slide rail (7) is blocked by a locking device which against relative movement to the slide rail (7) in the rail longitudinal direction is supported, and the blocking effect by the opening of the inactive leaf (2) can be produced and by the closing of the inactive leaf (2) is releasable, - wherein the locking device comprises a locking part (12), which in a rigid connection with the locking rod (20) movable is and from this connection also moved out again, characterized in that - the rigid connection between the locking part (12) and locking rod (20) can be produced by the locking device, while the locking rod (20) relative to the slide rail (7) on that end the sliding rail (7) moves towards, which is closer to the pivot axis of the active leaf (1), wherein - the rigid connection between Sp err part (12) and locking rod (20) relative to a movement of the locking bar (20) relative to the locking part (12) on the axis of rotation of the active leaf (1) to blocked, and wherein thereby - the locking member (12) relative to the slide rail (7) against relative movement on the pivot axis of the active leaf (1) closer to the end of the slide rail (7) is supported. 2. Apparatus according to claim 1, characterized in that the locking part (12) with the interposition of an elastic spring (21) relative to the slide rail (7) is supported, that a supported on the slide rail release part (14.1) in that trajectory of the locking member (12 ) and / or a mitbewegbewegten part projects with this elastic deformation of the spring (21), and that the connection between the locking rod (20) and locking part (12) by pressing the locking member (12) and / or of this mitbewegten part to the trigger part (14.1) and simultaneous movement of the locking rod (20) is releasable. 3. A device according to claim 2, characterized in that the release part (14.1) by closing movement of the inactive leaf on the locking part (12) is movable and away by opening movement thereof. 4. Device according to one of claims 1 to 3, characterized in that in addition a second, relative to longitudinal movement along the slide rail (7) supported locking part (12) with the locking rod (20) can be brought in by closing movement of the inactive leaf detachable connection, and that by this connection relative movement of the locking rod (20) in the longitudinal direction in the direction can be blocked, which is directed to the of the pivot axis of the active leaf (1) facing away from the end of the slide rail (7). 8/14 Austrian Patent Office AT510 683B1 2012-06-15 5. Apparatus according to claim 4 and claim 2 or 3, characterized in that both locking parts (12) via the spring (21) relative to the slide rail (7) are supported and that the clamping of both locking parts by stops of the locking parts (12) on a Trigger part (14.1, 14.2), which is supported against the slide, can be solved. 6. Apparatus according to claim 5, characterized in that the two release parts (14.1, 14.2), which act on a respective locking part (12), via a pivotable connecting lever (15) connected to each other and thereby synchronized are movable. 7. Device according to one of claims 1 to 6, characterized in that a locking part (12) is a clamping plate (12) having an opening through which the locking bar (20) passes, wherein at normal to the longitudinal direction of the locking bar aligned plane of the clamping plate (12) the breakthrough of the clamping plate (12) in a clearance fit comprises the clamping plate (12) on a relative to the slide rail (7) in a limited area, parallel to the rail longitudinal direction displaceable clamping plate holder (11 ) is held, that the clamping plate (12) on the clamping plate holder (11) is pivotally supported, wherein the pivot axis on the locking rod (20) passes over, and wherein a between the clamping plate holder (11) and clamping plate (12) clamped spring (13) parallel to the locking rod (20) aligned force with respect to the pivot axis of the clamping plate (12) eccentrically on the Apply clamping plate (12). 8. The device according to claim 7, characterized in that in each case a clamping plate (12) in a clamping plate holder (11) is arranged, that the springs (13) with respect to the direction parallel to the slide rail force directing components mutually oppositely directed forces on the respective clamping plates (12) exercise and that between the two clamping plate holders (11), the elastic spring (21) is stretched, by which the two clamping plate holder (11) from opposite directions are pressed against each one with respect to the slide rail (7) immovable stop surface. 9. Device according to one of claims 1 to 3, characterized in that the locking part (12) is a clamping plate (12) which has an opening through which the locking rod (20) passes through at normal to the longitudinal direction of the locking bar aligned plane of the Clamping plate (12) of the breakthrough of the clamping plate (12) the cross-sectional area of the locking rod (20) in a clearance fit comprises that the clamping plate (12) on a relative to the slide rail (7) in a limited area, parallel to the rail longitudinal direction displaceable clamping plate holder (11) is held, that the clamping plate (12) on the clamping plate holder (11) is pivotally supported, wherein the pivot axis of the locking rod (20) passes, wherein a clamp between clamp plate (11) and clamping plate (12) clamped spring (113) parallel to Locking rod (20) aligned force with respect to the pivot axis of the clamping plate (12) eccentrically on the Kle and the clamping plate (12) by the spring (113) in two, acting in opposite directions clamping with the locking rod (20) is movable. (Fig. 5) 10. The device according to one of claims 1 to 9, characterized in that the locking rod (20) has two longitudinal regions with different sized cross-sectional dimensions, wherein the longitudinal region (20.1) connects with the smaller cross-sectional dimensions of the vane side of the longitudinal region with a larger cross-sectional area. For this 5 sheets drawings 9/14