EP1798361B1 - Door - Google Patents

Abstract

A sliding sectional door, e.g. an up and over garage door, has at least one panel and has the top and middle of the panel supported between curved tracks to guide the door into a horizontal access position. The improvement has the bottom edge of the door supported between vertical guides through the entire opening movement to the horizontal position, and without any rearwards displacement required for the bottom edge.

Description

TECHNICAL AREA

The invention relates to a door with lateral guide rail assemblies comprising vertical, curved and horizontal rail portions. An at least one-part (one-sectional) closing element closes a door opening and is provided with at least one or two guide elements per door side for guiding the closing element to the associated guide rail arrangements such that the peat foot, ie the lowermost region of the closing element, is guided in the vertical guide rail area only parallel to the rail. At least one of the door drive or Torgewichtsausgleich serving flexible pulling means acts on or near the peat foot.

BACKGROUND OF THE INVENTION

The above-described sectional doors for closing larger door openings, such as garages, workshops or sports arenas have in many areas compared to roller doors, in which the closing element is wound up, but also against swing gates, in which the peat when opening outwardly pivots outwards, interspersed because they comparatively are stable and simple and yet neither the space for a winding drum, as required for roller shutter doors, need, even to the outside (ie in front of the gate) movement space when opening and closing need, as is the case with the swing gates. Meanwhile, the comparatively space-saving sectional doors are also available in installation situations with minimal space behind the closed door opening, such as from the WO 03/087504 known. In sectional doors that require little ceiling space, the curved rail portion of the guide rail assembly is located in an upper height portion of the door opening. In order to keep the free passage height as large as possible when the door is fully open, it is therefore necessary to move the locking element consisting of at least one section relatively far behind the door opening, so that the lowest section is also pivoted substantially into a horizontal position, the peat foot that is about the same height as the upper edge of the closing element forming Torkopf is raised.

The invention continues as before WO 03/087504 as the closest prior art.

From the - not generic - EP-A-1 536 093 (D1) a manually operable sectional door is known in which a counterbalancing device is housed in a box assembly 71, 710 integrated with the horizontal guide rail section. As from the local Fig. 6 can be seen, is located at the gate closed the Torkopf below the arc section of the guide rail. The problem of displacing the Torkopfes between a closed position and a pivot position thus does not occur. As can be seen from the local Fig. 8, it would also not possible to pivot in this known arrangement, the Torkopf when opening or for complete closing between a curved guide rail part and a vertical guide rail part back and forth, because in the extension of the arranged vertical guide rail 40 and slightly away from the door opening away obliquely extending guide rail portion R2 would prevent the upper guide rollers on such pivotal movement. This blind-arm-like projection R2 for the vertical guide rail 40 is required in this known gate to prevent the gate opening at the end of the opening movement, the lower Torführungsrollen be moved from the door opening (see column 5, lines 6 to 16 and claim 9 of D1 ).

From the - not generic - US 2 264 643 (D2) a manually operable sectional door is known in which the uppermost guide rollers 32 and the subsequent intermediate section rollers 30 extend in different curved separate guide rails 42, 48 and 44, respectively, requiring a first switch 52 to both curved guide rails merge up to a horizontal guide rail 50. In this known sectional door independent pivoting of the upper section in a ventilation position is not possible. In order to raise the guide rollers 34 close to the door opening to the upper door opening edge 74, another switch 60 must serve in the lower part of the curved guide rail course that the section intermediate rollers 30 can retract into the shallower guide rail bend 44 and only the gate rollers 34 in the more curved side guide rail area 42, 48 can retract. - The complex opening and closing process is thus "bought" by a very complex and prone to failure Mehrfachweichanordnung with two differently curved guide sheets for receiving the Torkopfrollen 32 and the Torfußrollen 34.

From the GB 475 263 (D3) is a (also) manually operable sectional door known, which is particularly close under the ceiling of a garage mobile - see. Page 1, lines 44 to 46. In this - not generic - sectional door, the guide rail bow must be located above the upper door opening edge behind a fall, so that an independent pivoting of the upper door section in a ventilation position even not possible. To open the door, it must be pushed up by hand, with the help of a counterbalance device, and pulled down by hand to close it. An engine operation is neither intended nor appears technically feasible.

The US 2,573,962 (D4) shows a hand-operable only and therefore not generic sectional door, in which for pivoting the top door section from a closed position to a ventilation position, the top section 17 must be tilted by hand - see. Column 3, lines 61/62. In the further movement of the peat foot 18a and the section intermediate rollers 18 are first pushed up vertically and then pushed on a curved guide rail 27 in the direction of the horizontal guide rail 20 under the garage ceiling 21. If the peat foot 18a the in Fig. 4 has reached the position shown, this is moved backwards to the door opening and further up and describes an approximately right-angled curve - see. Column 3, lines 24 to 36. In order to close the gate again, therefore, the initially total horizontally mounted gate must be pushed further into the room as a whole, thus completing an opposite to the subsequent closing movement movement until the gate roll 18a in the curved guide rail course 27 can run for the remaining torrents 18. Although such a sectional door allows very complex movements in the area of the Torkopfes 18b and the Torfußes 18a, but these movements are not feasible with a motorized door drive.

PRESENTATION OF THE INVENTION

Against this background, the invention is intended to solve the problem of avoiding as far as possible the gates of the type mentioned wide displacement of Verschließelementes for complete gate opening. In addition, it is desirable if possible, with a simple door construction and the safest possible operation to allow a minimum space requirement of the door in the open state. These and other objects are achieved by a gate having the features of claim 1. Accordingly, there is provided a novel guide means for vertically lifting the peat foot in the height portion of the curved guide rail portion becomes. The gate does not need to be moved as far as in known sectional doors when opening (backwards) so as to nevertheless achieve a total horizontal position of the closing element. As a result, aesthetic aspects can be taken into account in a simple manner, since a comparatively inconspicuous drive and guide technology can be used. The invention can now be realized in a number of advantageous variants:

According to a first aspect of the invention ( Fig. 1 . 2 and 6 ), the peat guide means is realized such that the curved rail portion is open on its radially outer side and provided with a vertical guide portion forming a gusset portion with each other. Thereby, a guide element associated with the peat foot, such as a known guide roller, of the closing element becomes possible to move vertically also in the height portion of the curved guide rail area, while the higher guide elements of the closing element can follow the curved guide surface of the curved rail area. Depending on the type of drive of the door and the design of an optional weight compensation device, the guidance of the door head takes place on the side facing away from the vertical guide section:

In order to enable the further guiding of the Torkopfes even after its pivoting from a closed position to a pivot position, an upper guide member is connected on each door side with the closing element. This may be an arrangement of the upper guide element located directly near the door head ( Fig. 2 ), wherein said guide member does not perform any guiding task during the pivoting operation and is displaced in the gusset region between the vertical and curved guide rail sections until it comes into contact with the bent guide section in its uppermost area or already close to or on the horizontal rail area and the weight force at the door head wearing. Also, the opposite (facing Toraußenseite) side of this upper guide element can be advantageous be used, namely form a torkopfseitigen stop when reaching the vertical position of the VerschGeßelementes. It is particularly advantageous if the counter-stop is formed by the vertical rail section. One or both of the pairs of stops can be adjustable for fine adjustment. In the horizontal rail area of this upper guide element also counteracts an upward force, the z. B. may occur when a cover-side door drive, in particular in conjunction with a push rod or a Wickeiwellenantrieb between a drive rail and the Torkopf is provided, as is common in many cases. Thus, while the arcuate rail portion has a varying distance between the inner and outer guide stops along the arc, the vertical and horizontal loop portions are preferably provided in a conventional manner with parallel guide surfaces to face both inward and outward directions or to serve as a guide surface both in the upward and in the downward direction.

The upper guide elements can also be arranged in a manner known per se at the free end of each pivot lever ( Fig. 6 ), wherein the other pivot lever end or a pivot joint is pivotally mounted on the Verschüeßelement, and wherein the storage takes place in the case of multi-member locking elements on the uppermost closing element. Such pivot levers can with ( Fig. 6 ) and without ( Fig. 1 ) Forced adjustment. Examples of the former kind are in the German Utility Model Application No. 20 2005 008027 described. Examples of the second kind are in the WO 03/087504 , described. If such a pivot lever is provided, the guide element attached thereto is guided along the curved rail area. During pivoting between the vertical closed position and a pivoting position of the uppermost door section, the door head approaches the upper guide element when the pivot joint is provided below the Torkopfes on the upper door section. However, the pivot joint can also be provided at or near the Torkopfes when a pivot angle limit at approximately horizontal opening position of the upper door section prevents the lowering of the Torkopfes. A pivot angle limiting stop is also in other designs and arrangement of the pivot lever beneficial.

Alternatively, in this first aspect of the invention also a, preferably automatically acting, switch ( Fig.1 ) may be provided in the gusset region between the vertical guide portion and the curved guide portion, which is preferably curved or angled and has guide portions on two sides, one of which faces the bent and the other the vertical guide rail portion. In particular, such. Soft be designed as a two-armed lever and its pivoting in one direction by a peat near the guide member of the closing element are effected and in the opposite direction of a higher-level guide element closing element are reversed. As a result, the guide elements close to the peat foot follow the vertical guide section 5A and the higher guide elements follow the horizontal guide section 5B. Further guide elements preferably remain on one side of the switch and are therefore inactive for the switch adjustment.

In these and other embodiments of the invention, a traction means, such as a rope engaging near or at the peat foot, is deflected near the upper gate opening.

According to a further aspect of the invention, the pivoting of the at least one closing element during the closing operation is provided by a stop arrangement provided in the lower end region of the closing element to be pivoted ( Fig. 1 ; 4 ) causes. As a result, a small vertical movement of the (uppermost) closing element to be pivoted leads to a relatively large pivoting angle, so that the door head can be pivoted into a closing position even with relatively small gap dimensions, without any significant height change of the door head taking place. This embodiment is also independent of the features of claim 1 of independent inventive importance.

According to still further aspect of the invention ( Fig. 3 ; 5 ) it is provided that a guide element close to the peat foot is provided on a lower pivot lever such that this guide element retracts into the curved guide rail area when the peat foot is pivoted up from a vertical to an approximately horizontal opening position when opening the door, wherein the (lower) Closing element hinged via a pivot means pivot lever in this opening phase changes its pivot angle with respect to the closure element. This arrangement is used in a variant ( Fig. 3b ) as a guide means, with which the peat is raised in the height portion of the curved guide rail area substantially vertically or, is performed. In this solution, it is possible to dispense with a guide rail section extending vertically in the upper door region. If this makes the peat foot in the last phase of the opening movement passes through a slightly different from the vertical direction of movement curve, this is harmless, because persons or objects in this height portion of the door opening are usually not encountered and these movements of the peat to the inside or outside only relatively minor Nature are. In this aspect of the invention, a vertical upper guide rail section may additionally be provided, in which a guide element arranged directly on the peat foot in addition to the pivot lever can be guided.

According to yet another aspect of the invention ( Fig. 1 ; 3-6 ) is provided on the uppermost closure element a deflection means for the flexible traction means connected to the Torfuß such that upon pivoting of the at least upper closing element in the vertical Verschließposition the traction means is deflected in the pivoting direction. During the subsequent door opening by applying a tensile force on the traction means the previous Zugmittelauslenkung acts as a lateral force which pivots the uppermost closing element at the vertical closing position in a pivot position in the sense of a power drive without further force effects in the opening direction are required on Torkopf. According to this aspect of the invention, an above-mentioned and known per se upper pivot lever with end-side guide element is preferably used, wherein the articulation region of this lever to the closing element for the Zugmittelauslenkung can be used. Once the induced by the Zugmittelauslenkung transverse force has ceased to act, because the deflection is reduced to zero, other lateral forces can be used for further pivoting of the Torkopfes. Gravity can be used for this purpose. Likewise, forced guides or corresponding automatic actuators or the like are used for this purpose. The Zugmittelumlenkung this aspect of the invention is also independent of the features of claim 1 of independent inventive importance.

According to a still further aspect of the invention, as a guide means, with which the peat is vertically liftable in the height portion of the curved guide rail area, provided a substantially gate-high vertical guide rail, so that the peat as the case of a roller shutter door only vertically moves over the entire door height. This also minimizes the footprint of the open door. The combination of a gate-high vertical guide rail with a horizontal guide rail with subsequent arch area and subsequent vertical guide rail area, which does not necessarily have to reach to the lower edge of the door opening, is independent of the features of claim 1 of independent inventive importance.

Yet another aspect of the invention is one of two sections ( Fig. 3a; 3b ) existing closing element, so that even large gates, especially comparatively high goals can be extremely simple design and the lower section for the installation of passage doors is available. These can even be executed without a threshold. When these doors are closed, they form a unit with the remaining part of the lower door section, which can be lifted altogether and pivoted into a high horizontal opening position. For outward opening doors not even a door lock is absolutely necessary for this. This aspect of the invention is independent of the feature of claim 1 of independent inventive importance.

It is important to note that the features of the various aspects of the invention may also be used in combination with one another, particularly in combination with other embodiments of the invention, so as to achieve a wide variety of applications of the invention.

The above-mentioned and the claimed components to be used according to the invention described in the exemplary embodiments are not subject to special conditions of size, shape, material selection and technical design, so that the selection criteria known in the field of application can be used without restriction.

Further details, features and advantages of the subject matter of the invention will become apparent from the subclaims and from the following description of the accompanying drawings, in which - exemplary embodiments - preferred embodiments of the inventive arrangement of a gate are shown.

BRIEF DESCRIPTION OF THE FIGURES

Fig. 1

eine erste Ausführungsform eines Tores in vier Betriebspositionen: A = geschlossen, B = gekippt, C = halbgeöffnet und D = geöffnet;

Fig. 2

eine zweite Ausführungsform eines Tores in den Figur 1 entsprechenden Betriebsstellungen;

Fig.3a

eine dritte Ausführungsform eines Tors, wiederum in den vier Betriebsstellungen A bis D gemäß Fig. 1;

Fig.3b

ein Tor wie in Fig. 3a gezeigt, aber mit geändertem Torantrieb und größerer Sturzhöhe;

Fig. 4

eine vierter Ausführungsform eines Tores in den gleichen vier Betriebsstellungen A bis D wie in Figur 1 sowie in Fig. 4 E als Ansicht von hinten (Ansicht A gem. Fig.4A) und Fig. 4F in Ansicht von oben (Ansicht C gem. Fig.4A);

Fig. 5

eines fünfte Ausführungsform wiederum in den vier Betriebsstellungen A bis D gemäß Fig.1 sowie

Fig. 6

eine sechste Ausführungsform, wiederum in den vier Betriebsstellungen A bis D entsprechend Fig. 1.

In the drawing show:

Fig. 1

a first embodiment of a door in four operating positions: A = closed, B = tilted, C = half open and D = open;

Fig. 2

a second embodiment of a gate in the FIG. 1 corresponding operating positions;

3a

a third embodiment of a gate, again in the four operating positions A to D according to Fig. 1 ;

3b

a gate like in Fig. 3a shown, but with changed door drive and larger lintel height;

Fig. 4

A fourth embodiment of a gate in the same four operating positions A to D as in FIG. 1 as in Fig. 4 E as a view from behind (view A acc. Fig. 4A) and Fig. 4F in top view (view C acc. 4A );

Fig. 5

a fifth embodiment again in the four operating positions A to D according to Fig.1 such as

Fig. 6

a sixth embodiment, again in the four operating positions A to D accordingly Fig. 1 ,

DETAILED DESCRIPTION OF THE EMBODIMENTS

The sequence of FIG. 1 shows a two-part sectional door 10 with a lower section 10A and an upper section 10B. On both sides of the door is a guide rail assembly consisting of a vertical guide rail portion 7A, to which a curved rail portion 7B and this in turn is followed by a horizontal rail portion 7C. The gate has at its Torfuß 2 a guide element 2A in the form of a guide roller on each side, which runs in opening and closing of the door in the guide rail assembly 7. In the joint area between the two Torblattsektionen another guide element 3 is arranged in the form of a tandem guide roller, which also runs in the guide rail assembly 7. An upper guide member 4 in the form of a guide roller is provided on the upper section member (closing member 10B). It is located at the free end of a pivot lever 100, which is arranged vertically pivotable on each door side via a pivot joint 100A. A traction means 15 in the form of a steel wire rope engages the peat foot 2 and is deflected by a deflection roller 16 near the upper door opening to a drive, not shown. - In that regard, the arrangement is known.

The curved rail portion 7B is formed triangular or gore-shaped and has a curved radial outer side 7B 'as a guide roller bearing surface for the Guide elements 3 and 4 on. The gusset portion further comprises a vertical guide portion 7B "serving as a guide for the gate-side guide member 2A, In the gusset portion 6, a switch 5 having a substantially vertical guide portion 5A and having an approximately horizontal guide portion 5B is pivotally arranged about a horizontal axis. This switch is in the closed position ( Fig. 1A ) arranged in an obliquely downwardly facing position and shaped so that the central gate guide element 3 can enter the gate area in the gate area and abuts from below at the approximately horizontal guide section 5A and the switch 5 forcibly conveys a rearwardly facing Zwangsverschwenkung. In this, in Figure 1C In the swivel position shown, the switch opens towards the horizontal guide rail area. In this switch position, the turfußseitige guide element 2A on the turnout outside on further Toretzen drive upwards until it in the in FIG. 1D shown upper end position arrived at fully open gate. When Torschließen the process of automatic Weichenverstellung runs in the reverse direction, the switch adjustment is in turn caused by the middle guide element 3.

FIG. 1 shows, moreover, a stop arrangement 12, 12A, 12B, which when Torschließen the compulsory pivoting of the door section 12B of the in FIG. 1B tilt position shown in the in Figure 1A shown closed position causes. For this purpose, a pivot arm 12A is attached to the upper end portion of the upper door section 10B at this and comes with the beginning of Zwangsschließweges with a torrahmenfesten bolt as a stop 12B in Appendix. Another Torsenken thereby leads to Zwangsverschwenkung the upper door section in the vertical closed position.

Also shows FIG. 1 an automatic power drive for tilting the upper door section 10B from the closed position to the tilted position. For this purpose, a deflection of the traction means 15 in the closed position is used. For this purpose, the deflection roller 16 is arranged offset to the rear from the door opening so that the traction means 15 is deflected forwards when the door is closed (FIG. Fig. 1A ). One serving for this deflection 13 is provided at or near the pivot joint 100A at each torrent and engages the traction means 15 automatically. Due to the gravity driven forced closing when closing the gate, the traction means is therefore deflected towards the door opening. Now, when the door opening the traction means 15 in a suitable manner (see below) wound or otherwise pulled backwards, it exerts on the deflection means 13 directed towards the Torinneren force, which leads to the inward pivoting of the upper door section 10B.

The gusset-like design of the curved rail portion 7B is also in the embodiments of FIG. 2 and FIG. 6 apparent: The forced closure with the stop assembly 12 is also in the embodiment according to FIG. 4 realized. The Seilauslenkung for tipping the upper door section when opening is also in the embodiments according to FIGS. 3b to 6 realized.

FIG. 2 shows in contrast to FIG. 1 a conventional push rod drive 9 for door opening and door closing. For this purpose, a known drive rail 9B, the z. B. tormittig on the ceiling or in the upper space z. B. a garage is attached and a push rod 9A can move back and forth, the remote end of the push rod acts approximately in the area of the Torkopfes 8. Here, a special simple gate opening and door closing and tipping over and tilting of the upper door section is made possible without further aids while still standing on the ground peat foot. As weight compensation, a known torsion spring arrangement can be used, which helps to lift the peat 2 via a flexible traction means 15 and so relieves the door drive.

A push rod drive as in FIG. 2 is also in the embodiment according to Fig. 3a realized. The torsion spring arrangements for weight compensation in Figures 2 and Fig. 3a can also be replaced by a horizontal Zugfederanordnung, as shown there by way of example.

FIG. 3a / b shows the peculiarity of a lower pivot lever 20, which, with the door closed to the rear, pointing downwards at the lower door section 10B is pivotally attached to each torrent and at its free end a guide element 20A 'in the form of a guide roller which moves in the continuous guide rail 7 instead of the guide element 2A from the other embodiments. This eliminates, inter alia, a forced operation peat nut 2. When the door is open, the lower pivot lever 20 is pivoted away from the door section 10B down obliquely.

Fig. 3b shows an embodiment of this gate, with a winding drive. For this purpose, a drive motor 19 is fixedly disposed under the ceiling, which can pull the traction cable 15 and on.

FIG. 4 shows a further embodiment in which a vertical guide rail 14 near the door opening occupies approximately the entire available height and the peat guide via the guide element 2A over the entire opening path vertically. Behind the vertical rail area 7A ', a second guide rail is arranged with a vertical area 7A, an arc area 7B and a horizontal area 7C, wherein the vertical area does not have to be led to the floor. The middle and upper guide elements 3 and 4 are guided in the latter guide rail.

Figures 4E and 4F show passage doors 18 which are installed in the lower closing element 10A. With a corresponding door opening height and only a few, in particular two, door sections, therefore, the through doors 18 are limited solely to the lower closure element 10A, which constitutes a frame in which one or more of the passage doors 18 are held pivotable about vertical axes. As far as shows FIG. 4F four such doors in the form of two double doors that open almost the entire door width as a passage area with otherwise closed gate.

FIG. 5 shows a variant of the two-rail arrangement of FIG. 4 , in which the rear guide rail also led to the ground in its vertical area is. In addition, the embodiment has a lower pivot lever 20, as in connection with FIG. 3a / b was shown and explained.

FIG. 6 shows in a modification of the embodiment according to FIG. 2 a Zugseilantrieb as he also in connection with FIGS. 1 . 4 and 5 is shown. The peculiarity of this embodiment consists in a device 11 for forced adjustment of the upper closing element 10B between the closed position ( Fig. 6A ) and the tilt position ( Fig. 6B ). Serves this purpose a power drive in the form of a pivoting drive, which is effective between the upper door section 10B and the pivot lever 100 to change the angle between the pivot lever 100 and the upper door section, thereby achieving a tilting of this door section between the two mentioned positions. Upon further opening, the pivot lever 100 can be folded even closer to the upper closure element 10B, as seen from Fig. 6C seen. When closing the movement is reversed.

LIST OF REFERENCE NUMBERS

1

guide means

2

Torfuß

2A

guide element

3

guide element

4

guide element

5

switch

5A

guide section

5B

guide section

6

interstitial region

7

Track assembly

7A

vertical rail area

7A '

vertical rail area

7B

curved rail area

7B '

radial outside

7B "

vertical outside

7C

horizontal guide rail area

8th

Torkopf

9

linear actuator

9A

pushrod

9B

drive rail

10

closure element

10A

closure element

10B

closure element

11

Forced adjustment facility

12

stop assembly

12A

Schwenkauslager at the gate

12B

Fixed rash on the goal frame

13

deflecting

14

vertical guide rail

15

traction means

16

idler pulley

17

Torsichtungsfederanordnung

19

drive motor

20

lower pivot lever

20A

pivot

20A '

guide element

100

pivoting lever

100A

pivot

A

view

C

view

Claims (11)

1. Door

   - with lateral guide rail arrangements (7) comprising vertical (7A), curved (7B) and horizontal (7C) rail regions, wherein the curved guide rail region is situated in an upper height section of the door aperture,

   - with an at least single-member (single-section) closing element (10; 10A, 10B) for a door aperture, said closing element comprising a door foot (2) and a door head (8), which on opening and closing is provided to be forcibly pivotable between a vertical closed position and a pivoted position - and vice versa - by means of an automatic power drive for tilting,

   - with at least two guide elements (2A) per door side for guiding the closing element on the associated guide rail arrangement,

   - with at least one power-driven flexible traction means (15) which engages at the door foot or close to the door foot and is deflected close to the upper door aperture,

   - with a motor-powered door drive having a traction means drive for the traction means (15) or having a pushing rod which engages at the uppermost door section, characterised in that

   - a vertical guide rail (14) is provided which is essentially the height of the door,

   - the door foot can be raised and lowered approximately vertically by means of the traction means (15) in the height section of the curved guide rail region with a power drive, and

   - the door foot is guided parallel to the rail in the vertical guide rail which is the height of the door.
2. Door according to claim 1, characterised in that the tilting of the at least one closing element (10; 10B) is brought about by a stop arrangement (12, 12A, 12B) provided in the lower end region of the closing element (10; 10B) to be pivoted.
3. Door according to claim 1 or 2, characterised in that a guide element (20A') is provided on a lower pivot lever (20) close to the door foot (2).
4. Door according to one of the claims 1 to 3, characterised in that a deflecting means is provided at the uppermost closing element (10B) for the flexible traction means (15) connected to the door foot such that, during pivoting of the at least upper closing element into the vertical closed position thereof, the traction means is deflected in the pivoting direction.
5. Door according to one of the claims 1 to 4, characterised in that the guide means for the door foot (2) is provided with a curved guide rail region (7B) which is open at the radial outer side (7B') thereof, and with a vertical guide rail region (7B''), which form a spandrel region (6) with one another.
6. Door according to claim 5, characterised in that, in the spandrel region, a switch (5) or a switching arrangement is provided between the vertical guide rail region (7B'') and the curved guide rail region (7B').
7. Door according to claim 6, characterised in that the switch has guide sections on two sides, of which one faces toward the curved guide rail region and the other faces toward the vertical guide rail region.
8. Door according to claim 6 or 7, characterised in that, in addition to the switch (5), further guide elements are provided.
9. Door according to one of the claims 1 to 8, characterised in that a per se known pivot lever is provided pivotably articulated on or close to the door head and, fastened to said pivot lever, a guide element which is guided along the curved guide rail region.
10. Door according to claim 9, characterised in that a pivot angle limiter is provided which prevents the upper door section in the approximately horizontal open position from lowering of the door head.
11. Door according to one of the claims 1 to 10, characterised in that the closing element (10A, 10B) comprises two sections and the lower section accommodates at least one access door (18).

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