DE202012100077U1 - Sliding door system for vehicles - Google Patents

Abstract

Pivoting sliding door system for vehicles, in particular rail vehicles, - with at least one door leaf (1, 2) lying in a closed state in the vehicle wall (3), in an open state outside in front of the vehicle wall (3) and thereby leaving a door opening free, the door opening being a clear one Width (B) and a clear height (H), - with at least one transverse guide (13), which allows movement of the door leaf (1, 2) transversely to the vehicle wall (3) and which is above the clear height (H) of the door opening is housed, - with at least one longitudinal guide device (22), which enables a movement of the door leaf (1, 2) parallel to the vehicle wall (3) and which is housed above the clear height (H) of the door opening, and - with drive devices (9, 10), which are used to move the door leaf (1, 2), these comprising a locking shaft (9b) which at least at one end is in engagement with a locking lever (18) in order to move it around the longitudinal axis turn the locking shaft (9b) ...

Description

FIELD OF THE INVENTION

• – mit zumindest einem in einem Schließzustand in der Fahrzeugwand, in einem Öffnungszustand außen vor der Fahrzeugwand liegenden und dabei eine Türöffnung frei lassenden Türblatt, wobei die Türöffnung eine lichte Breite sowie eine lichte Höhe aufweist,
• – mit zumindest einer Querführung, welche eine Bewegung des Türblatts quer zur Fahrzeugwand ermöglicht und welche oberhalb der lichten Höhe der Türöffnung untergebracht ist,
• – mit zumindest einer Längsführungsvorrichtung, welche eine Bewegung des Türblatts parallel zur Fahrzeugwand ermöglicht und welche oberhalb der lichten Höhe der Türöffnung untergebracht ist, und
• – mit Antriebsvorrichtungen, welche zur Bewegung des Türblatts dienen, wobei diese eine Verriegelungswelle umfassen, welche zumindest an einem Ende mit einem Verriegelungshebel in Eingriff ist, um diesen um die Längsachse der Verriegelungswelle drehen zu können, und
• – wobei der Verriegelungshebel an einem Ende in einer fest mit dem Fahrzeug zu verbindenden Führungskulisse geführt ist.

The invention relates to a sliding door system for vehicles, in particular rail vehicles,

• - With at least one in a closed state in the vehicle wall, in an open state lying outside in front of the vehicle wall and thereby leaving a door opening free door leaf, wherein the door opening has a clear width and a clear height,
• - With at least one transverse guide, which allows a movement of the door panel transversely to the vehicle wall and which is housed above the clear height of the door opening,
• - With at least one longitudinal guide device which allows movement of the door leaf parallel to the vehicle wall and which is housed above the clear height of the door opening, and
• - With drive devices, which serve to move the door leaf, which comprise a locking shaft, which is at least at one end with a locking lever into engagement in order to rotate about the longitudinal axis of the locking shaft, and
• - Wherein the locking lever is guided at one end in a fixed to the vehicle to be connected guide slot.

STATE OF THE ART

Such sliding door systems are already known, see for example the publication AT 500 017 B1 , There is shown a sliding door, which has a pivoting part, which allows the movement of a door leaf transversely to the vehicle wall and a locking of the door leaf. The swivel part has a guide part 11 that has a straight section 12a and a circular arc section 12b includes, with the straight section 12a slants. About a door drive 13 becomes an output shaft around the rotation axis 9 turned and the rotary motion via gears on the locking lever 10 transferred, which at one end in the guide part 11 is guided. When the door leaf is closed, the locking lever is located 10 in the lower end of the guide part 11 and becomes with continued rotation about the axis of rotation 9 up in the straight section 12a the guide member moves, and then the locking lever 10 due to the continued rotation under the guidance 11 wandering outside and doing the sled 4 including the longitudinal guide for the door leaf and of course the door leaf 3 take yourself.

The in the AT 500 017 B1 cited EP 0 517 334 A or their German translation DE 692 04 556 T2 shows a similar arrangement, here also curved ribs 22 . 23 as a guide for a lever 25 serve to move or lock the door normal to the vehicle wall. For the movement of the lever 25 from an end stop 58 to the other end stop 59 The dead center of the lever system must be overcome, it is called here by a dead-center mechanism. This has the advantage, in the case of a force acting on the outside of the door leaf in the closed state of the door, which is caused for example by passengers or by negative pressure in tunnels or by passing trains, to prevent accidental opening of the door.

A disadvantage of these known sliding door systems, however, is that the longitudinal and transverse guides above the door opening or the door area need space, as in double-deck cars, where the seats are arranged for passengers on two superimposed levels, preferably for seats in the upper level should be used. The conventional sliding sliding door systems need - seen from the top of the door opening - upwards and inwards, however, so much space that in the upper level on the side of the door opening usually only one row of seats can be arranged longitudinally to the direction of travel, in which the passengers sit transversely to the direction of travel, instead of several rows of seats running transversely to the direction of travel, each with two seats in the direction of travel.

Such rows of seats running longitudinally instead of transverse to the direction of travel are also very unpopular with the passengers, since the passengers during braking or acceleration of the vehicle can not be supported on seat backs, as is the case with seat rows extending transversely to the direction of travel.

But even in the case of single-storey vehicles, one seeks to keep the depth of the drive space always small, on the one hand to make room for other systems, on the other hand, to be able to act more freely in the design of the interior.

It is therefore an object of the present invention to provide a sliding door system whose longitudinal or transverse guides occupy much less space in the area above the clear height of the door opening, and which in particular transversely to the vehicle wall has a smaller depth than has been the case so far.

PRESENTATION OF THE INVENTION

Such a sliding door system for vehicles, especially rail vehicles, is given by claim 1, where the guide slot in the mounted state only allows movement of a guided end of a locking lever along a line which deviates by at most 15 °, in particular by at most 5 °, most preferably not at all from the vertical, wherein the locking shaft from the closed state of the door leaf over the dead center of the locking lever in the open state is convertible.

The dead point refers to that position of the (crankshaft), so here the locking shaft, where no movement of the lever, so here the locking lever, in the axial direction, ie here in the direction of the locking shaft. The dead center would be in 5 correspond to the horizontal position of the locking lever.

Characterized in that the guide slot in the mounted state only allows a nearly vertical movement of the guided end of the locking lever, the guide slot protrudes less far into the interior of the vehicle as about the inclined guide parts 11 of the AT 500 017 B1 or the sloping ribs 22 . 23 of the DE 692 04 556 T2 , This results in a reduction in the depth of the transverse guide by about 10% to 12%.

It can be provided that the guide slot only allows a rectilinear movement by having approximately a straight slot for guiding the locking lever, which runs correspondingly approximately or completely perpendicular.

Since the locking shaft from the closed state of the at least one door leaf is only about the dead center of the locking lever in the open state can be ensured that by pressure on the at least one door leaf from the inside or by negative pressure outside the at least one door panel unintentional opening and pivoting of the at least one Door leaf is prevented.

In order to ensure the smoothest possible guidance of the locking lever in the guide slot, it can be provided that the locking lever is guided by means of a guide roller in the guide slot.

A particularly simple and space-saving embodiment provides that the locking lever is designed as a straight lever, which is guided at one end in the guide slot (for example by means of a guide roller) and at the other end with the locking shaft is engaged.

The over-dead-center mechanism can be realized so that the locking shaft in the closing state is further away from the plane of the vehicle wall than the guided in the guide slot end of the locking lever and to reach the opening state of the guide lever from a lowermost position in the guide slot below the dead center of the locking lever is movable in an uppermost position in the guide slot, which is above the dead center of the locking lever. In the closed state so is the locking shaft, which is usually arranged parallel to the vehicle wall or to the door leaves, of the vehicle wall (or the closed door leaves, which are then in a plane with the vehicle wall) within the predetermined by the guide track path when opening the guide lever moves in the guide slot upwards, while the locking shaft is pulled from the guide lever to the outside (and with her the door drive including door leaves), at least up to an approximately vertical position of the guide lever, at its now lower end it is attached ,

It can be provided that the locking lever is in the lowest position between 1 ° and 15 °, in particular by 10 °, below the dead center. This is usually sufficient to prevent inadvertent opening of the at least one door panel.

In particular, together with this measure can be provided that the locking lever is in the uppermost position between 60 ° and 90 ° above the dead center. In the case of 90 °, the locking lever is in the open state parallel to the movement direction defined by the guide slot.

Since the guide slot only allows an approximately vertical movement, this can be exploited to operate with the locking lever additionally a bottom lock of the at least one door panel.

In this case, the movement of the guided end of the locking lever, which is transmitted via a vertically movable locking linkage to the bottom latch, is converted into a rotation of a roller pivot lever of the bottom latch or a pivoting movement of a Rollenschwenkhebelarms. This is done by further guide slots of the roller pivot lever and guide slots of the roller pivoting roller pivotally mounted Rollschwenkhebelkäfigs. Specifically, it is envisaged that the bottom lock comprises a roller pivot lever having a Rollenschwenkhebelarm and is rotatably mounted in a Rollenschwenkhebelkäfig, and both roller pivot lever and Rollenschwenkhebelig cage guide slots, in which guide rollers are arranged, and that by a movement of the guided in the guide slot end of the locking lever, a locking linkage is vertically movable, by means of which the guide rollers are movable, so that the vertical movement of the locking linkage in a rotation of the roller pivot lever or a pivoting movement of the Rollenschwenkhebelarms is implemented.

BRIEF DESCRIPTION OF THE FIGURES

The invention will be explained with reference to an embodiment, it shows

1 a sliding door system with car body structure in axonometric view

2 a section through a door opening transverse to the vehicle longitudinal axis

3 a sliding door system without car body structure in axonometric view

4 an axonometric view of the arranged in the drive chamber first and second drive device

5 a section through a door opening in the drive region, wherein the sliding door system in the pivoted position (closed state)) is shown

6 a section through a door opening in the drive region, wherein the sliding door system is shown in the swung-out position (open state)

7 an axonometric view according to 4 with a view of the traction drive

8th an axonometric view of the energy chain in the open and closed position of the sliding door system

9 a sectional view of the drive space through the center of the door opening transverse to the vehicle wall

10 a ground lock in axonometric view

11 a floor lock in a view parallel to the vehicle wall

12 a floor lock in a view across the vehicle wall

WAYS FOR CARRYING OUT THE INVENTION

1 and 2 show schematically a sliding door system in a double-deck car for rail traffic from the inside with two door leaves 1 . 2 (in the closed state) including car body structure consisting of a vehicle wall 3 , a vehicle floor 4 and a floor of the upper deck 5 , The door leaves 1 . 2 form in the closed state on its outer side a plane with the surrounding outside of the vehicle wall 3 ,

In the left and right part of the door leaves 1 . 2 , as well as in its upper end area is the door drive 7 by a corresponding wall cladding 6 is covered. The wall paneling 6 determines the clear width B and clear height H, which determine the door opening, through the two door leaves 1 . 2 is closable. The area above the clear height of the door opening is hereinafter referred to as drive space 12 designated.

The two door leaves are additionally via a floor lock 8th in the lower part of the door leaves 1 . 2 locked in its closed state.

3 shows a sliding door system with two door leaves 1 . 2 without car body structure. In the upper area is the door drive 7 consisting of a first drive device 9 that has a drive motor 9a and a locking shaft 9b includes, for the swiveling out of the door leaves 1 . 2 across the vehicle wall 3 and a second, a traction drive 10b comprehensive drive device 10 to the two door leaves 1 . 2 essentially parallel to the vehicle wall 3 to move. From the second drive device 10 is in 3 only the drive motor 10a to see, but not the traction mechanism 10b even.

The first drive device 9 works with a cross guide device 13 together, consisting of a fixed, with the vehicle wall 3 fixed drive console 13 consists. The drive console 13 includes a guide round 14 on which a support profile 15 across the vehicle wall 3 is movable.

The operation of the floor lock 8th , via a locking linkage 11 that with the in the range of the door drive 7 provided upper locking cooperates (see. 3 ). In the area of floor locking is via the locking linkage 11 a roller pivot lever 27 operated, in turn, a Rollenschwenkhebelarm 31 with the door leaf 2 is in operative connection, see 10 . 11 and 12 , The roller pivot lever 27 has at least one - in the illustrated embodiment, two - from bottom to top, curved in the upper region guide slot 28 on. The roller pivot lever 27 is in a roller pivoting cage 29 rotatably mounted, which at least one further - in the embodiment shown two - guide slot 30 which is in the form of a rectilinear, vertical, from bottom to top facing slot. The axis of rotation of the roller pivot lever 27 runs parallel to the locking linkage 11 ie vertically. The roller pivot cage 29 is fixed to the vehicle wall 3 connected. At least one - in the embodiment shown two - leadership role 26 is dimensioned so that it engages both with the guide link 28 on the roller pivot lever 27 as well as with the guidance 30 on roller pivot lever cage 29 stands or in these leadership scenes 28 . 30 is movable.

Any control devices, such as the door control or the emergency release, can be located next to the door leaves 1 . 2 or the door opening in or on the vehicle wall 3 be housed.

4 shows the drive room 12 without wall cladding 6 , so that first and second drive device 9 . 10 are visible in detail. For clarity, the support profile 15 only sledges 15b drawn, but not a top cover 15a (please refer 3 ). The sledges 15b are on the leadership rounds 14 movable transversely to the vehicle wall.

driving device 10 includes engine 10a and traction drive 10b and works with a longitudinal guide device 22 in the form of telescopic rails 22 together (see 9 ). The telescopic rails 22 On the one hand can be designed with free-running ball cages or with special slides, which are characterized by recirculating ball systems (sealed or not sealed). driving device 10 and telescopic rails 22 as well as others, for the movement of the door leaves 1 . 2 parallel to the vehicle wall 3 Responsible components of the door drive 7 are fix with the support profile 15 connected and therefore also together with the support profile 15 across the vehicle wall 3 traversable.

4 shows very clearly the arrangement of the traction mechanism 10b as well as its two parts 10b ₁ and 10b ₂ . These are each about at least one arm 16a , b each with a door leaf 1 . 2 connected, see 9 in which a section according to YY in 4 (the arrows indicate the viewing direction) is shown. Between the two debris 10b ₁ and 10b ₂ is at least one component of the door drive 7 arranged, namely two energy chains 19a . 19b (please refer 8th ), which the two door leaves 1 . 2 or their electrical components via energy conductors (cables) 23 (please refer 9 ) or provide their grounding as well as the electronic components of the door leaves 1 . 2 forward generated output signals to a door control.

Also evident in 4 is the locking shaft 9b via the drive motor 9 and a bevel gear 17 can be driven and the Verrieglung and Ausschwenkbewegung the door leaves 1 . 2 causes by placing a locking lever 18 between an "over-center position" and a swing-causing situation back and forth.

5 shows a section (XX in 4 ; the arrows indicate the viewing direction) through the door opening in the drive area, wherein the sliding door system is shown in pivoted, ie in closed, position. It is clear the position of the locking lever 18 to detect about 10 ° below the dead center ("over-center position"), ie the locking lever 18 is turned downwards by about 10 ° with respect to the horizontal, so that the vertical position of the guide roller 24 is correspondingly lower than the axis of rotation, by the locking shaft 9b is defined.

6 shows in comparison also a section (XX in 4 ; the arrows indicate the viewing direction) through the door opening in the drive region, in which case the sliding sliding door system is shown in a swiveled out position, ie in an open position. Accordingly, the locking lever is located 18 in a swing-causing situation. Specifically, the locking lever 18 in 6 rotated by about 90 °, ie the locking lever 18 is about 90 ° above the dead center, and is substantially parallel to the guide slot 25 , Accordingly, the vertical position of the guide roller 24 now over that of the locking shaft 9b ,

In 5 and 6 the structure of the transverse guide can be well recognized: the drive console 13 and the leadership backdrop 25 are stuck to the vehicle wall 3 connected, being about the guide round 14 the drive console 13 the sled 15b horizontally movable to the outside. The drive console 13 is designed as a ball socket housing. With the sled 15b is the door drive 7 (please refer 4 ) firmly and becomes with movement of the carriage 15b also taken away. The in the door drive 7 mounted locking shaft 9b is fixed with a recess at one end of the straight locking lever 18 connected while at the other end of the locking lever 18 a leadership role 24 is rotatably mounted, which in the slot of the guide slot 25 is forced, so the leadership role 24 can only vertically up and slide down in the slot.

The left transverse guide is designed correspondingly symmetrical.

Of course, instead of two door leaves could 1 . 2 also only a door leaf be present.

7 is another axonometric view according to 4 with a view of the traction drive 10b , For reasons of clarity, the upper ends of the carriages were used 15b of the supporting profile 15 not drawn so that the traction drive 10b the second drive device 10 including deflecting discs 20 is clearly recognizable. The right of the two deflection pulleys 20 is with the drive motor 10a coupled. Between the ruins 10b ₁ and 10b ₂ are the energy chains 19a , b arranged. The distance between the two debris 10b ₁ and 10b ₂ is chosen so that the energy chains 19a , b just find space in between.

8th shows the position of the energy chains 19a , b with open door leaves 1 . 2 (Position A) and closed door leaves 1 . 2 (Position B) in a single figure. For clarity, that was from the door leaves 1 . 2 further away 10b ₁ not drawn. When opening the door leaves 1 . 2 Cross out the energy chains 19a , b that of the two debris 10b ₁ and 10b ₂ trapped volumes in the direction of the arrows 21a . 21b ,

FUNCTIONING OF THE INVENTION

In closed position of the door leaves 1 . 2 When the door opening is actuated, the drive motor first becomes 9a activated, which subsequently on the angular gear 17 the locking shaft 9b counterclockwise (see 5 ) is set in rotation. This will cause the locking lever 18 shot, due to his forced guidance by means of the leadership role 24 in the lead setting 25 wanders in the slot from the lowest position all the way up. This will make the sled 15b of the supporting profile 15 on the leadership round 14 the drive console 13 across the vehicle wall 13 moved outward and thus moves the entire support profile 15 including second drive device 10 and telescopic rails 22 as well as energy chains 19a , b across the vehicle wall 3 outward.

In 5 is the locking lever 18 by about 10 ° below the dead center, in this embodiment by the horizontal position of the locking lever 18 is marked. In 6 is the locking lever 18 by about 90 ° above the dead center, so in this case is vertical, as well as the slot of the guide slot 25 , and in this case roughly coincident with this. When opening the door leaves 1 . 2 , So from the transition of the closed state in the open state, sets the locking lever 18 with respect to the axis of rotation of the locking shaft 9b So an angle of about 100 ° back.

The unlocking of the floor lock 8th takes place by means of the locking linkage 11 when unlocking, due to the vertically upward movement of the locking lever 18 according to the guidance 25 , undergoes a vertical stroke. The locking linkage is engaged with the guide rollers 26 the floor lock 8th why they also experience a vertical stroke, cf. 10 . 11 and 12 , The leadership roles are running 26 on the one hand in the vertical, linear guidance scenes 30 of the roller pivot cage 29 that is stuck to the vehicle wall 3 connected is. Therefore, the guide rollers wander 26 or whose axis of rotation is also vertically upwards, without the direction of the axis of rotation changes (parallel to the vehicle longitudinal axis in the illustrated embodiment). On the other hand, the leadership roles are running 26 also in the from bottom to top, curved in the upper range guide scenes 28 the roller pivot lever 27 that rotates in the roller pivot cage 29 is stored. The curvature causes this guidance scenes 28 a rotation of the roller pivot lever 27 or a pivoting movement of the Rollenschwenkhebelarms 31 , In this way, the vertical stroke of the locking linkage 11 in a rotation of the roller pivot lever 27 the floor lock 8th or a pivoting movement of the Rollenschwenkhebelarms 31 converted, causing a movement of the door leaves 1 . 2 across the vehicle wall 3 is possible.

Subsequently, the activation of the drive motor takes place 10a , Which via a deflection, not shown, the traction mechanism drive 10b set in motion. The two opposing moving trüm 10b ₁ and 10b ₂ are each about pulling arms 16a , b each with a door leaf 1 . 2 connected, whereby they are also moved in opposite directions, wherein they are fixed to the car body structure fixed telescopic rails 22 be worn, cf. 7 and 9 ,

When closing the two door leaves 1 . 2 The described process takes place in reverse order.

LIST OF REFERENCE NUMBERS

1

left door leaf

2

right door leaf

3

vehicle wall

4

vehicle floor

5

Floor of the upper deck

6

wall covering

7

door drive

8th

The bottom lock

9

first drive device for the swiveling movement transversely to the vehicle wall

9a

Engine as part of the first drive device

9b

Locking shaft as part of the first drive device

10

second drive device for the movement parallel to the vehicle wall

10a

Motor as part of the second drive device

10b

Traction drive as part of the second drive device

10b _1,2

Run of the traction means of the traction mechanism drive

11

locking linkage

12

drive space

13

Traverse device / drive bracket

14

lead round

15

support section

15a

top cover of the supporting profile

15b

Carriage of the supporting profile

16a, b

pulling arm

17

angle gear

18

locking lever

19a, b

energy chains

20

Deflection pulleys of the traction mechanism drive

21a, b

Movement directions of the energy chain

22

Longitudinal guide device / telescopic rails

23

Energy conductor (cable)

24

leadership

25

guide link

26

Guide rollers of the floor lock

27

Roller lever

28

Guide slot on the roller pivot lever

29

Roller lever cage

30

Guide slot on roller pivot cage

31

Rollenschwenkhebelarm

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• AT 500017 B1 [0002, 0003, 0010]
• EP 0517334A [0003]
• DE 69204556 T2 [0003, 0010]

Claims (10)

Pivoting sliding door system for vehicles, in particular rail vehicles, with at least one in a closed state in the vehicle wall ( 3 ), in an open state outside the vehicle wall ( 3 ), thereby leaving a door opening free door leaf ( 1 . 2 ), wherein the door opening has a clear width (B) and a clear height (H), - with at least one transverse guide ( 13 ), which movement of the door leaf ( 1 . 2 ) across the vehicle wall ( 3 ) and which is housed above the clear height (H) of the door opening, - with at least one longitudinal guide device ( 22 ), which movement of the door leaf ( 1 . 2 ) parallel to the vehicle wall ( 3 ) and which is located above the clear height (H) of the door opening, and - with drive devices ( 9 . 10 ), which is used to move the door leaf ( 1 . 2 ), this being a locking shaft ( 9b ), which at least at one end with a locking lever ( 18 ) is engaged to this around the longitudinal axis of the locking shaft ( 9b ), and - wherein the locking lever ( 18 ) at one end in a guide slot to be fixedly connected to the vehicle ( 25 ), characterized in that the guide slot ( 25 ) in the assembled state, only one movement of the guided end of the locking lever ( 18 ) along a line that deviates by at most 15 °, in particular by at most 5 °, particularly preferably not at all from the vertical, wherein the locking shaft ( 9b ) from the closed state of the door leaf ( 1 . 2 ) over the dead center of the locking lever ( 18 ) can be converted into the open state. Sliding sliding door system according to claim 1, characterized in that the guide slot ( 25 ) only a rectilinear movement, for example by a straight slot for guiding the locking lever ( 18 ) having. Sliding sliding door system according to claim 1 or 2, characterized in that the locking lever ( 18 ) by means of a leadership role ( 24 ) in the management scene ( 25 ) is guided. Sliding sliding door system according to one of claims 1 to 3, characterized in that the locking lever ( 18 ) is designed as a straight lever, which at one end in the guide slot ( 25 ) and at the other end with the locking shaft ( 9b ) is engaged. Sliding sliding door system according to one of claims 1 to 4, characterized in that the locking shaft ( 9b ) in the closed state farther from the plane of the vehicle wall ( 3 ) is removed than the one in the executive ( 25 ) guided end of the locking lever ( 18 ) and to achieve the opening state of the guide lever ( 18 ) from a lowermost position in the guide slot ( 25 ) located below the dead center of the locking lever ( 18 ), in an uppermost position in the guide ( 25 ) is movable above the dead center of the locking lever ( 18 ) lies. Sliding sliding door system according to claim 5, characterized in that the locking lever ( 18 ) is located in the lowest position between 1 ° and 15 °, in particular by 10 °, below the dead center. Sliding sliding door system according to claim 5 or 6, characterized in that the locking lever ( 18 ) is in the uppermost position between 60 ° and 90 ° above the dead center. Sliding sliding door system according to one of claims 1 to 7, characterized in that the locking lever ( 18 ) in the opening state parallel to the guide slot ( 25 ) fixed direction of movement is. Pivoting sliding door system according to one of claims 1 to 8, characterized in that with the locking lever ( 18 ) additionally a floor lock ( 8th ) of the door leaf ( 1 . 2 ) is operable. Sliding sliding door system according to claim 9, characterized in that the floor lock ( 8th ) a roller pivoting lever ( 27 ), which has a Rollenschwenkhebelarm ( 31 ) and in a Rollenschwenkhebelig cage ( 29 ) is rotatably mounted, comprises and both roller pivot lever ( 27 ) as well as roller pivoting cage ( 29 ) Leadership Courses ( 28 . 30 ), in which guide rollers ( 26 ) are arranged, and that by a movement of the in the guide ( 25 ) guided end of the locking lever ( 18 ) a locking linkage ( 11 ) is vertically movable, by means of which the guide rollers ( 26 ) are movable so that the vertical movement of the locking linkage ( 11 ) in a rotation of the roller pivot lever ( 27 ) or a pivoting movement of the Rollenschwenkhebelarms ( 31 ) can be implemented.

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