EP0711898B1 - Cantilever sliding gate - Google Patents

Abstract

The lower part of the door panel (10) is formed by a hollow support and guide profile (11) open to one side or underneath. The hollow interior of the support and guide profile contains the drive unit (3) held by a fixed strut (30). The drive unit moving the panel of the sliding door has a motor (37), at least one drive roller (31, 32) in the form of a friction chain or cog wheel rotary driven by the motor, and a roller support (34).

Description

The invention relates to a cantilever sliding gate according to the preamble of claim 1.

A sliding gate of the type mentioned is from DE-U-89 06 344 known. In this known sliding gate is preferred a drive by means of a gear and roller chain is provided. Either a roller chain runs at two Gears on two spaced casters around or it a roller chain clamped at the end is used, then within the support and guide profile Drive pinion is provided, which is along the Chain can move. Such a drive is technical relatively complex and requires a comparatively high maintenance effort because of chain and gear or gears need to be lubricated regularly. Besides, is from time to time an exchange of chain and gears necessary due to the inevitable wear, which requires extensive work. As alternative is also a friction wheel drive in the document mentioned mentioned, but in the form described is not functioning properly. With the disclosed Friction wheel drive occurs at certain shift positions of the sliding gate a gap in movement in which the friction wheel that drives the drive has no driving force can transfer the sliding gate. The cause of this The lack of a cantilever sliding gate inevitably occurring tilting moments with changing Direction, in addition to the disadvantage of the movement gap mentioned Another requirement is the requirement a reversal of the direction of rotation of the friction roller occurs when the gate over its entire displacement path in one Direction should be moved. So that is in the above Document disclosed friction wheel drive in practice Not insertable.

Another sliding gate is known from DE 27 43 007 A1. There is a single one for driving this sliding gate Friction wheel provided in its own profile chamber arranged inside the support and guide profile is, the drive means for the drive wheel arranged outside of the support and guide profile next to this are. In addition to the individual friction wheel for the drive includes the sliding gate idler assemblies, wherein one upper and one for each idler arrangement lower idler is provided. These idlers that have no drive function, are in their vertical Distance can be changed relative to each other. Farther these idlers are in a separate one, from the one above mentioned profile chamber for the drive wheel separate second profile chamber arranged. Regarding the as The individual friction wheel serving as the drive wheel is supplementary provided that it by a resilient member its associated tread is pressed. As a disadvantage is considered in this known sliding gate, that its supporting and guiding profile is a relatively complicated one Has shape and that due to the arrangement of the Drive unit next to the sliding gate this is not an optimal one offers visual impression.

Therefore, for the present invention Task, a self-supporting sliding gate of the aforementioned Kind of creating the disadvantages listed avoids and this in addition to a small space requirement for the drive and a good visual appearance a reliable acting, from the gate displacement position independent and low-maintenance and low-wear, technically relatively simple drive.

• daß die Antriebseinheit mindestens eine erste, obere Antriebsrolle und mindestens eine zweite, untere Antriebsrolle umfaßt, wobei die obere Antriebsrolle an einer oberen Laufbahn und die untere Antriebsrolle an einer unteren Laufbahn innerhalb des Trag- und Führungsprofils anliegt,
• daß der vertikale Abstand der oberen und der unteren Antriebsrolle(n) voneinander veränderbar ist und
• daß die Antriebsrollen mit einer in Richtung zur zugehörigen Laufbahn weisenden Kraft vorbelastet oder vorbelastbar sind.

A first solution to the problem is achieved according to the invention by a self-supporting sliding gate of the type mentioned at the beginning, which is characterized in accordance with claim 1,

• that the drive unit comprises at least a first, upper drive roller and at least a second, lower drive roller, the upper drive roller being in contact with an upper track and the lower drive roller in contact with a lower track within the support and guide profile,
• that the vertical distance between the upper and lower drive roller (s) can be changed from one another and
• that the drive rollers are preloaded or can be preloaded with a force pointing in the direction of the associated track.

By the specified characteristic features of the sliding gate ensures that even when using a technically simple friction wheel drive always a reliable one The sliding gate is driven regardless of in which position the gate is currently located. The inevitable with such a sliding gate occurring different leverage and the thus have tilting moments pointing in alternating directions no longer affects the effectiveness of the drive. By changing the vertical distance the drive rollers will adapt to different Heights of the support and guide profile and a compensation dimensional tolerances and wear. Advantageous the drive rollers are also constantly on the associated career pressed so that the driving force on both careers within the support and Distributed guide profile, reducing the risk of traction is significantly reduced.

In a further embodiment of this sliding gate, that the drive unit with one of the carrying and Guide roller arrangements to a structural and functional Unit is summarized. So in general it is enough on the one hand a summarized on the sliding gate Drive, support and guide roller arrangement and on the other hand, a pure support and guide roller arrangement to provide. The drive, Support and guide roller arrangement next to the gate opening attached while the pure idler and guide roller assembly preferably placed away from the gate opening is.

• daß die Antriebseinheit mit einer der Trag- und Führungsrollenanordnungen zu einer baulichen und funktionalen Einheit zusammengefaßt ist und
• daß die Antriebsrolle mit einer in Richtung zur zugehörigen Laufbahn weisenden Kraft vorbelastet oder vorbelastbar ist.

A second solution to the problem is achieved according to the invention by a self-supporting sliding gate of the type mentioned at the beginning, which is characterized in accordance with claim 3,

• that the drive unit is combined with one of the support and guide roller assemblies to form a structural and functional unit and
• that the drive roller is preloaded or can be preloaded with a force pointing in the direction of the associated track.

This version of the sliding gate according to the invention solves the above task in full and offers that explained in connection with the first solution Benefits. In addition, the sliding gate according to the second solution already reliable with just one drive roller be driven, which is an advantageously simple Drive and thus cost-effective production results.

To ensure a particularly reliable and low-slip drive of the sliding gate according to the second Solution is provided that the drive unit at least a first, upper drive roller and at least one includes second, lower drive roller, the upper Driving roller on an upper track and the lower one Driving roller on a lower track within the Support and guide profile is present.

When executing the sliding gate according to the invention with at least one upper and at least one lower drive roller is for the technical realization of changeability the vertical distance between the drive rollers from each other preferably provided that the drive rollers load-bearing roller supports changing the vertical Distance of the upper and lower drive roller (s) pivotable from each other like a seesaw on the stationary support is stored. This configuration of the Roller carrier in the form of a seesaw allows easy and at the same time stable construction, with the low mechanical effort the desired distance variability the drive rollers is realized.

To avoid swiveling the rocker-like executed roller carrier the height of the sliding gate noticeably changes, it is provided that the axis of rotation the first, upper drive roller (s) in their basic position vertically above and parallel to the swivel axis of the roller carrier runs. Because of this arrangement The first, upper drive roller moves it when swiveling the roller carrier practically only in the Horizontal, so that the height of the drive roller remains largely the same as long as the pivot angle remains limited to small angles. This limitation is not a limitation in practice, because for the changes to the vertical required here Distance of the drive rollers to each other comparatively small swivel angle, in practice up to a maximum of about 3 ° is sufficient.

The rocker-like roller carrier described above can also be used advantageously for a safe Procedure of the sliding gate required friction between the drive rollers and the support and guide profile to ensure. For this purpose, the roller carrier is preferred in its vertical increase in distance the upper and lower drive roller (s) from each other corresponding pivot direction with a predeterminable Force preloaded or preloadable.

To the inside of the support and guide profile Run the drive unit as space-saving as possible can, it is preferably provided that the roller carrier at the same time as a gearbox for between the engine and the rotationally driven drive roller (s) Gear is formed, the fixed support is connected to the roller carrier and being the motor on one of the end faces pointing in the longitudinal direction of the gate the reel seat is flanged. It is preferred the motor is further arranged so that its output axis in the longitudinal direction of the support and guide profile has, then the transmission, for example, a technical be relatively simple worm gear can. This worm gear offers the advantage of a high translation, so even with a relatively small Motor has a sufficiently large torque on the drive rollers can be generated. There is also a worm gear self-locking, so that when the engine stops, an undesirable Moving the sliding gate without any other Brake or locking means is excluded.

In order for a self-locking drive of the sliding gate this in the event of an emergency or malfunction, e.g. in the event of a power failure or drive motor damage to be able to move, it is proposed that a third, freely rotatable idler is arranged so that it by pivoting the roller carrier in its one vertical Distance reduction of the upper and lower Drive roller (s) corresponding pivot direction from each other can be brought into contact with the upper track , at the same time the first drive roller (s) of the upper track and the second drive roller (s) is / can be taken out of the lower career. For the necessary pivoting of the roller carrier for example, one between the roller carrier and manually adjustable lifting spindle arranged on the ground be provided which are independent of a current or other energy supply can be operated. As soon as the support and guide profile after appropriate pivoting of the roller carrier only on the freely rotatable third idler is a manual shift of the sliding gate possible.

To enable the emergency operation function of the sliding gate can instead of the freely rotating third idler on Roller carrier alternatively between the engine and the / the Drive roller (s) at least one externally or remotely operated engaging and disengaging clutch may be provided. Access to such a coupling is from below possible through the longitudinal slot in the support and guide profile, for example by using a suitable operating tool inserted through the longitudinal slot and engaged with a corresponding actuation connection Clutch is brought. Also means for remote control the clutch, e.g. on mechanical, pneumatic, hydraulic or electrical ways are known per se.

To ensure stable storage of the sliding gate and possibly tilting moments acting on the door leaf without being able to accommodate other external guide means, it is proposed that the support and guide profile in Cross-section C-shaped with one pointing downwards Longitudinal slot is formed that the drive rollers each paired mirror-symmetrical to the longitudinal median plane of the Door leaf of the sliding gate are executed and that in Support and guide profile on the underside of the top Profile part the first, upper track and on the top of the lower profile part on both sides of the longitudinal slot two parallel second, lower raceways formed are. In addition to the high stability of the sliding gate thereby also a simple manufacture of the support and Leadership profile achieved because this easily by folding or rolling from a flat sheet of metal can be generated.

For applications of the sliding gate where particularly high transverse tilting moments can occur, e.g. at especially tall sliding gates or due to wind load closed surface door leaf, can also be on the top Part of the sliding gate forming an upper end Profile attached between two side Guide rollers with vertical axes of rotation runs through.

Figur 1

ein freitragendes Schiebetor in einer Seitenansicht, teils in aufgebrochener Darstellung,

Figur 2

ein Detail des Schiebetores mit einer Antriebseinheit in vergrößerter Darstellung,

Figur 3

das Schiebetor gemäß Figur 2 im Schnitt entlang der Linie III-III in Figur 2, und

Figur 4

ein Detail des Schiebetores mit einer gegenüber Figur 2 geänderten Antriebseinheit.

Embodiments of the invention are explained below with reference to a drawing. The figures in the drawing show:

Figure 1

a cantilevered sliding gate in a side view, partly in a broken view,

Figure 2

1 shows a detail of the sliding gate with a drive unit in an enlarged view,

Figure 3

2 in section along the line III-III in FIG. 2, and

Figure 4

a detail of the sliding gate with a drive unit modified compared to Figure 2.

As Figure 1 of the drawing shows, this is here illustrated embodiment of a cantilever Sliding gates 1 from a door leaf 10, which through a lower, horizontally parallel to the ground 5 Support and guide profile 11, a parallel at a distance second support profile 12 running above and these two Profiles 11, 12 connecting vertical struts 13 are formed is. Furthermore, the sliding gate 1 includes a oblique strut 14 which from the right end of the upper support profile 12 to the right end of the lower, opposite the upper support profile 12 extended support and Guide profile 11 runs.

Furthermore, the sliding gate 1 shown includes a Carrier and guide roller assembly 2 and a drive unit 3, which takes on the supporting and management function at the same time. Both the support and guide roller arrangement 2 and the drive unit 3 completely in hollow interior of the lower support and guide profile 11 housed. The support and guide profile 11 is how will be explained in more detail later, in cross-section C-shaped formed with a downward slit 11 '. Two reach through this longitudinal slot 11 ' 5 supports 20, 30 fixed on the ground into the inside of the support and guide profile 11. For correction and adjusting the height of the door leaf 10 can these supports 20, 30 or at least one of the two Supports 20, 30 can be height-adjustable, e.g. as screw spindles. On the right in Figure 1 Support 20 is a single roller 21 freely rotatable as Support and guide roller stored. The outside diameter this roll 21 is slightly smaller than that clear distance between the upper inner surface and the lower inner surface of the support and guide profile 11, so that the roller 21 both on the upper inner surface also on the lower inner surface of the support and guide profile can run, depending on which travel position the door leaf 10 is currently.

The drive unit 3 comprises in that shown in Figure 1 Example one rigid with the fixed support 30 connected roller carrier 34 and an upper roller 31st and a lower roller 32 which is stacked vertically variable distance are arranged and each both as a supporting and guiding role and as a driving role serve and with one towards the associated Career-oriented force are preloaded. To the Roller carrier 34, which is also the housing of a transmission forms, a motor 37 is flanged through which the two rollers 31, 32 can be set in rotation are. Instead of the motor 37 on the outside of the gearbox Flange forming roller carrier 34 can also a motor-gear unit with a common, single Housing are used, then the motor inside of the gear housing is housed with what an even more compact design allows. The rollers 31, 32 are friction wheels, e.g. made of plastic or with a plastic covering on their tread, which by the engine 37, which is preferably an electric motor, can be rotated are, whereby the sliding gate 1 or its door leaf 10 can be moved.

As FIG. 1 shows particularly clearly, the Carrier and guide roller assembly 2 and from the drive unit 3 only parts of the two associated from the outside Supports 20, 30 recognizable, so that approximately the impression of a "floating" sliding gate results.

Figure 2 of the drawing shows a detail of the door leaf 10 of the sliding gate 1 with the drive unit 3 with the support and Guide profile 11. Extend upwards from Support and guide profile 11, the vertical struts 13, which are only partially shown here. Downwards is the support and guide profile 11 in the area of the longitudinal slot 11 'open. Protrudes through this longitudinal slot 11 ' the fixedly arranged on the ground 5 support 30 in the inside of the profile 11. The upper end of the support 30 is articulated, here around a horizontal and transverse to the door leaf 10 extending axis 34 'pivotable with the Roller carrier 34 connected to an upper drive roller 31 and a lower drive roller 32 carries. In the example 2, the upper drive roller 31 is vertical arranged above the pivot axis 34 'around which the roller carrier 34 is pivotable relative to the support 30 is. The lower drive roller 32 is here to the left of the pivot axis 34 'horizontally spaced. The upper Inner surface of the support and guide profile 11 is as first track 111 formed on which the upper Drive roller 31 rolls; the lower inner surface of the Support and guide profile 11 serves as the second, lower Track 112 for the lower drive roller 32. The engine 37 is on the end face pointing to the right in FIG. 2 of the roller carrier, which also serves as the gear housing 34 removably flanged. The power supply of the motor 37 can easily be in or on the Support 30 into the interior of the support and guide profile 11 guided lines take place.

To the right of the support 30 is an additional support 35 between the roller carrier 34 and the ground 5 provided, the lower ends of the support 30th and the further support 35 on a common one Base plate 38 stand. The additional support 35 is e.g. a lifting spindle that is manually adjustable in length is. In addition, 35 is in the course of the support an elastic intermediate member 36 is arranged, with which the roller carrier 34 can be preloaded with a force. This preloading force is generated by a compression spring 36 generates the roller carrier 34 so preloaded that the drive rollers 31 and 32 to their associated tracks 111 and 112 are pressed. This will be a sufficient friction between the drive rollers 31, 32 on the one hand and the raceways 111, 112 guaranteed. The preload force can be adjusted by adjusting the lifting spindle adjusted or adjusted as required become.

Furthermore, the roller carrier 34 according to FIG. 2 has a third, freely rotatable Carrier roller 33, which is free in the operating state shown lies inside the support and guide profile 11. In In this state the dotted line runs through 39 shown longitudinal axis of the drive unit 3 essentially horizontally and parallel to the longitudinal direction of the Support and guide profile 11.

For emergencies, e.g. in the event of a power failure or damage of the motor 37, can be shortened by shortening the lifting spindle 35 the roller carrier 34 is pivoted clockwise as far be until the drive unit 3 by the Dashed line 39 'takes the longitudinal direction shown. The drive rollers 31, 32 are in this position out of their associated careers 111, 112 brought, while instead now the additional idler 33 abuts the upper race 111. In this The state of the drive unit 3 can now be as required manually move the door leaf 10.

Figure 3 of the drawing shows the sliding gate 1 in vertical section along the line III-III in Figure 2, being here particularly clearly the downward in the area of the Longitudinal slot 11 'open C-shape of the support and guide profile 11 becomes clear. In the hollow interior of the and guide profile 11, the drive unit 3 can be seen, which is cut in its upper part. Links and an upper drive roller 31, 31 'can be seen on the right, the pairs mirror-symmetrical to the vertical Longitudinal center plane 100 of the door leaf 10 and the support and Guide profile 11 are formed and arranged. Between the rollers 31, 31 'is part of the roller carrier 34 visible. The falls below the rollers 31, 31 ' Look at the free end of the engine 37, under which two further, lower drive rollers 32, 32 'visible are. These rollers 32, 32 'are also mirror-symmetrical trained and arranged to level 100 and on the lower part of the roll carrier lying between them 34 stored. When the sliding gate is moved 1 or its door leaf 10 run the upper drive rollers 31, 31 'on the upper track 111 and the lower Drive rollers 32, 32 'on the two parallel, on both sides of the longitudinal slot 11 'lower raceways 112 from inside the support and guide profile 11.

Below the support and guide profile 11 and the drive unit 3 is the associated one, by means of the base plate 38 5 fixed anchored on the ground 30 visible, the upper end of which is not visible here the roller carrier 34 is articulated. In front of the support 30 extends the further support 35 with its elastic Intermediate link 36.

Extend upward from the top of the Support and guide profile 11, the vertical struts 13, this also in the illustrated embodiment are arranged in pairs and symmetrically to level 100. The upper end of the door leaf 10 forms the upper Support profile 12, here in the form of a tube with a square Cross section is executed.

For the absorption of tilting moments, as is particularly the case with high and / or closed surface door leaves 10 occur, can, as shown in Figure 3, next to the door leaf 10 a support beam 4 may be arranged with his lower end is anchored to the ground 5 and the height of the door leaf 10 slightly exceeds. Extends from the upper end of the support beam 4 horizontally across the upper support profile 12 Boom 40, the free end bent downwards is. The support beam 4 is located opposite one another and the boom 40 at their facing each other Pages each have a guide roller 41, 42 around vertical Axes of rotation are freely rotatable and between them the upper support profile 12 runs through.

When executing the drive unit 3 according to FIG. 4 is the arrangement of the drive rollers 31, 32 relative to Swivel axis 34 'of the roller carrier 34 hit so that the upper drive roller 31 again vertically above the Pivot axis 34 'is that, however, the second, lower Drive roller 32 now at a horizontal distance to the right of the pivot axis 34 '. To generate an elevated Contact pressure and thus an improved frictional connection between the drive rollers 31, 32 and the associated Raceways 111, 112 is now a pivoting of the roller carrier 34 clockwise required here by the weight of the motor 37 already in a certain Dimensions is generated. In addition, there is also one here further support 35 available, which again from a Lift spindle and an elastic intermediate member 36 exist can. The elastic intermediate member 36 is here preferably a tension spring, by means of which the roller carrier 34 can be preloaded with a force for one Pressure of the drive rollers 31, 32 on the raceways 111, 112 provides. In this normal operating state Drive unit 3 runs its longitudinal axis again, as represented by dashed line 39, essentially horizontal.

To enable the door leaf to be moved manually 10 is provided in the embodiment according to FIG. 4, the roller carrier 34 with the rollers 31, 32 and the motor 37 about the pivot axis 34 'counterclockwise pivot, which again, as already described above, the drive rollers 31, 32 out of engagement with their Races 111, 112 are brought and instead the additional, third idler roller 33, which is to the right of the drive roller 31 is arranged in contact with the upper track 111 of the support and guide profile 11 arrives.

The drive unit is for maintenance and repair purposes 3 when fully moved to the open position Door leaf 10 from the front of the support and guide profile 11 accessible here, which is why this is preferred is provided with a removable cover. After losing weight this cover, not shown in the drawing and after loosening the support 30 and optionally the additional support 35 from the ground 5 and attachment an auxiliary support at the opposite end of the door leaf can the complete drive unit 3 forward from the Support and guide profile are pulled out. Because in normal Operation of the sliding gate 1, the drive unit 3 completely inside the support and guide profile 11 lies and this is only a relative down Has narrow longitudinal slot 11 ', the drive unit 3 well protected against environmental influences and it will at the same time protecting people against damage caused by the Drive unit 3 guaranteed.

The electrical necessary for the operation of the sliding gate and / or electronic control and security devices require relatively little space and can either in or on the support 30 or in or on the support beam 4, if present, or alternatively also removed from the sliding gate 1, e.g. in one Gatekeeper's house.

Claims (11)

1. Self-contained push door (1) comprising

   a door plate (10) the lower part of which is formed by a hollow supporting and guiding profile (11) open to the side and downwards,

   at least two stationary supporting and guiding roller arrangements (2) attached beside the door opening and spaced apart in longitudinal direction of the door with the arrangements (2) comprising rollers (21) in the hollow interior of the supporting and guiding profile (11), and

   a driving unit (3) for moving the door plate (10) of the push door (1) whith the unit (3) arranged in the hollow interior of the supporting and guiding profile (11), and supported by a stationary support (30), and encompassing a motor (37), a driving roller (31, 31', 32, 32') rotatable by the motor, and a roller support (34) wherein the driving roller (31, 31', 32, 32') is a friction wheel which contacts at least one runway (111, 112) extending in the interior of the supporting and guiding profile (11) in the longitudinal direction thereof,

   characterized in

   that the driving unit (3) encompasses at least one first upper driving roller (31, 31'), and at least one second lower driving roller (32, 32') wherein the upper driving roller (31, 31') contacts an upper runway (111), and the lower driving roller (32, 32') contacts a lower runway (112) within the supporting and guiding profile (11),

   that the vertical distance of the upper and the lower driving roller(s) (31, 31'; 32, 32') from each other is variable, and

   that the driving rollers (31, 31', 32, 32') are biased or to be biased with a force directed towards the associated runway (111, 112).
2. Push door according to claim 1, characterized in that the driving unit (3) is combined with one of the supporting and guiding roller arrangements (2) to form a construction and functional unit.
3. Self-contained push door (1) according to the preamble of claim 1,
   characterized in

   that the driving unit (3) is combined with one of the supporting and guiding roller arrangements (2) to form a construction and functional unit, and

   that the driving roller (31, 31', 32, 32') is biased or to be biased with a force directed towards the associated runway (111, 112).
4. Push door according to claim 3, characterized in that the driving unit (3) encompasses at least one first upper driving roller (31, 31'), and at least one second lower driving roller (32, 32') wherein the upper driving roller (31, 31') contacts an upper runway (11), and the lower driving roller (32, 32') contacts a lower runway (112) within the supporting and guiding profile (11).
5. Push door according to claim 1, 2 or 4, characterized in that the roller support (34) supporting the driving rollers (31, 31'; 32, 32') while varying the vertical distance of the upper and the lower driving roller(s) (31, 31'; 32, 32') from each other is articulatedly supported at the stationary support (30) like a rocker.
6. Push door according to claim 5, characterized in that the turning axis of the first upper driving roller(s) (31, 31') in the basic position thereof extends vertically above and in parallel with the pivoting axis (34') of the roller support (34).
7. Push door according to claim 5 or 6, characterized in that the roller support (34) is biased or to be biased with a predetermeable force in its pivoting direction corresponding with its vertical distance enlargement of the upper and the lower driving roller(s) (31, 31'; 32, 32') from each other.
8. Push door according to one of the claims 1 to 7, characterized in that the roller support (34) simultaneously is formed as a gear housing for a gear arranged between the motor (37) and the rotatable driving roller(s) (31, 31', 32, 32') wherein the stationary support (30) is connected to the roller support (34), and wherein the motor (37) is flanged to one of the front walls of the roller support (34) facing the door longitudinal direction.
9. Push door according to one of the claims 5 to 8, characterized in that at the roller support (34) a third freely rotatable supporting roller (33) is arranged such that it may contact the upper runway (111) by pivoting the roller support (34) in a pivoting direction corresponding with its vertical distance decrease of the upper and the lower driving roller(s) (31, 31'; 32, 32') from each other wherein at the same time the first driving roller(s) (31, 31') may be brought out of engagement from the upper runway (111), and the second driving roller(s) (32, 32') from the lower runway (112).
10. Push door according to one of the preceeding claims, characterized in that at least one engageable and disengageable clutch is arranged between the motor (37) and the driving roller(s) (31, 31', 32, 32') which is to be actuated from the outside or by remote control.
11. Push door according to one of the preceeding claims, characterized in that the cross-section of the supporting and guiding profile (11) is C-shaped with a downwards pointing longitudinal slot (11'), that the driving roller(s) (31, 31'; 32, 32') (each) are designed in pairs symmetrical to the longitudinal middle plane (100) of the door plate (10) of the push door (1), and that in the supporting and guiding profile (11) at the lower side of the upper profile member the first upper runway (111), and at the upper side of the lower profile member at both sides of the longitudinal slot (11') two parallel second lower runways (112) are shaped.

Images