EP3469179B1 - Sectional door and guide rail arrangement - Google Patents

Description

The invention relates to a sectional door with a closing position closing a wall opening, in which it is arranged approximately parallel to the direction of gravity, along a path predetermined by a guide rail arrangement into an opening position, in which it is arranged essentially overhead, and a plurality with respect to door leaf elements which can be tilted relative to one another and approximately perpendicular to the direction of gravity, the guide rail arrangement comprising at least one guide rail with at least one vertical segment extending approximately in the direction of gravity, an overhead segment arranged overhead and an arc segment connecting the vertical segment and the overhead segment has, and a guide rail arrangement for such a sectional door.

Gates of this type are used, for example, in the form of garage doors, factory gates or hall gates. The door leaf is usually formed in several parts in the manner described above, it being aligned in the closed position approximately in a vertical plane and encircled by a frame frame. To open such a door, the door leaf is usually along one through the guide rail arrangement predetermined path moved in an overhead position. In the open position, the door leaf is usually arranged approximately parallel to the floor and approximately perpendicular to the wall opening to be closed with the door leaf in a horizontal plane. The movement of the door leaf is guided by means of the guide rail arrangement, which in the closed position of the door leaf runs approximately parallel to the lateral edges of the door leaf approximately in the direction of gravity, in the open position of the door leaf roughly parallel to the lateral edges of the door leaf and is arranged overhead Vertical segments and the arc segments connecting the overhead segments. The vertical segments running approximately in the vertical direction are usually attached to the frame spars fastened in the region of the reveal of the wall opening to be closed with the door leaf.

During an opening movement of the door leaf, the individual door leaf elements are first moved upwards along the vertical segments arranged in the direction of gravity, then deflected along the arc segment in order finally to be transferred into an overhead position predetermined by the overhead segments. This movement is made possible in the area of the arch segments by the fact that the door leaf has a plurality of door leaf elements which are arranged one behind the other in the direction of the door leaf movement and can be tilted relative to one another with respect to the tilt axes which are perpendicular to the direction of movement. Two door leaf elements arranged one above the other are connected to one another in a connection area. The door leaf elements can be connected to one another, for example, by a special configuration of the mutually adjacent edges of the door leaf elements arranged one above the other. However, it can also take place by means of hinge-like connection arrangements arranged on the door leaf elements.

With conventional sectional doors, damage has occurred in the past after a certain operating time in the transition area of successive door leaf elements. For example, chipping of the door leaf coating has occurred in the transition area of the door leaf elements, which has resulted in a deterioration in the optical appearance of the door leaf. Furthermore, damage to the door leaf elements in the transition region or damage to the connection arrangements connecting the door leaf elements, for example hinges, has also occurred. In some cases, the damage was so severe that the connection arrangements or even the door leaf elements had to be replaced in order to restore the functionality of the door. This has become an undesirable one Additional effort in the maintenance of conventional sectional doors and the generation of undesirable costs. This problem is also in the WO 94/25714 addressed. To solve this problem, the use of a guide rail arrangement is proposed, in which an upper running rail running overhead is designed as a whole and is mounted in such a way that it falls both forward and backward from an apex arranged approximately in the middle. In the EP 1170450 A1 guide rail arrangements for sectional doors are specified in which the arch segment has an elliptical course.

In view of these problems in the prior art, the invention has for its object to provide a sectional door and a guide rail arrangement for a sectional door, so that the risk of damage to the door leaf is reduced even with long-term use.

According to the invention the object is achieved by the further development of the known gates specified in the characterizing part of patent claim 1.

The invention is based on the finding that, by designing the overhead segment according to the invention, damage to the door leaf elements can be counteracted by the buckling which occurs when using conventional sectional doors and is described below.

The occurrence of the problem of buckling when using a conventional sectional door is explained below as an example. This problem occurs when the gate is in transition from the closed position to the open position. In the following, three door leaf elements arranged one above the other in the closed position are considered for explanation. According to their arrangement in the direction of gravity, the three door leaf elements are referred to as upper, middle and lower door leaf elements. In the closed position, the three door leaf elements are arranged approximately in one plane. When the door leaf moves from the closed position to the open position, the upper door leaf element is the leading door leaf element. The upper door leaf element is connected at its lower edge in the closed position in the direction of gravity to the upper edge of the central door leaf element in the closed position in the direction of gravity. The middle door leaf element runs after the upper door leaf element when the door leaf moves from the closed position into the open position. The middle door leaf element is at its lower edge in the direction of gravity with an upper edge in the direction of gravity connected to the lower door leaf element. When the door leaf moves from the closed position to the open position, the lower door leaf element follows the middle door leaf element.

The three door leaf elements can each be tilted relative to one another with respect to a tilt axis that runs approximately parallel to the adjacent edges of adjacent door leaf elements. In the following, the inside of the door leaf or the inside of a door leaf element is the side of the door leaf or door leaf element that faces the space to be closed with the door leaf. Furthermore, θ denotes an angle which is enclosed by two planes E1 and E2, which are each enclosed parallel to the inner sides of adjoining door leaf elements. The connection of adjacent door leaf elements of sectional doors is now usually designed such that the angle θ can be in the range between 0 and 180 °. This ensures that, on the one hand, the door leaf elements can be transferred from the open position to the closed position and vice versa along the arch segment. On the other hand, it prevents the door leaf from being pressed in from the outside. This ensures that the space to be locked with the door leaf is securely closed. It also prevents body parts, in particular fingers, from being squeezed into the gap between two adjacent door leaf elements when the door leaf touches the outside. The condition that the angle θ, which is enclosed by the inner sides of adjacent door leaf elements, is not greater than 180 ° can be achieved, for example, by a special design of mutually facing edges of adjacent door leaf elements, such as in FIG EP 0 304 642 A or the EP 0 370 376 A is described, or guaranteed by a special configuration of the connection arrangements connecting the adjacent edges.

An overturn now means a situation in which the angle θ is increased to θ> 180 °. Such an overturning can occur in conventional sectional doors with conventional guide rail arrangements in the following case: Consider the situation below in which the door leaf is transferred from the closed position to the open position. In the situation under consideration, the upper and middle door leaf elements are said to have already passed through the arch segment and to have run into the overhead segment. Furthermore, the upper edge of the lower door leaf element is said to have just passed through the arch segment. In a short area, as will be explained further below, the upper edge of the lower door leaf element is in Compared to the plane in which the upper door leaf element and the middle door leaf element are arranged, raised. Because of the articulated connection between the lower and the middle door leaf element, the lower edge of the middle door leaf element is then also raised. The lower edge of the central door leaf element is then raised out of the plane in which the upper door leaf element and the upper edge of the central door leaf element are arranged. The angle θ between the inner surface of the upper door leaf element and the inner surface of the central door leaf element is thus greater than 180 °. The door leaf is therefore buckled. This creates stresses in the connection area between the upper and the middle door leaf element. In the long run, this leads to damage to the door leaf elements and / or the connection arrangements.

The raising of the upper edge of the lower door leaf element is due, among other things, to the fact that the guide arrangements guiding the door leaf elements, for example rollers, are arranged at a distance from the tilting axes of adjacent door leaf elements in the height direction of the door leaf elements which runs parallel to the direction of gravity in the closed position of the door leaf. This is explained below for the case in which the guide arrangements have rollers with roller axes A and the door leaf elements are connected to one another by hinges with hinge pivot points D. S is an intersection of a straight line that runs parallel to the door leaf element through the hinge pivot point D with a straight line that runs perpendicular to the door leaf element and through the roller axis A. The connecting line SAT is therefore equal to the projection of the connecting line THERE on a straight line perpendicular to the surface of the door leaf element to which the roller is attached and which runs through the roller axis A. Then there are the connecting lines SAT and SD the cathets and the connecting line THERE is the hypotenuse of the right triangle Δ SDA. The lengths of the sides of the triangle are denoted by d _DA , d _SD and d _SA , respectively. If the roller is arranged in the vertical segment or at a distance from the arc segment in the overhead segment, the distance of the upper edge of each door leaf element from the guide rail arrangement is determined by d _SA since SAT stands vertically on the door leaf element. On the other hand, if the roller arranged on the upper edge of the lower door leaf element has just passed through the arch segment, so that this door leaf element is arranged obliquely with respect to the overhead segment, then for a certain time THERE perpendicular to the guide rail, and the distance of the upper edge of the lower door leaf element from the guide rail arrangement is given by d _DA > d _SA . Because the hypotenuse of a right-angled triangle is always longer than its Cathets. The distance of the upper edge of the lower door leaf element from the overhead segment is thus given by d _DA , while the distance of the upper edge of the middle door leaf element from the overhead segment is given by d _SA <d _DA . The upper edge of the lower door leaf element is consequently raised relative to the upper edge of the middle door leaf element.

The present invention is based on the following finding: The increase δ h of the lower edge of the middle door leaf element in comparison to the upper edge of the middle door leaf element in the direction of gravity is greatest when the lower door leaf element has just left the arch segment. In this case, δ h preferably designates the maximum increase resulting from the possible variations of d _SA and d _DA for the rollers attached to successive door leaf elements. The further the upper edge of the lower door leaf element runs into the overhead segment, the smaller the increase δ h. After a distance δ x in the overhead segment, the increase δ h has dropped to 0. The kinking of the door leaf elements can thus be counteracted, as claimed in the present invention, in that the overhead segment has the kink section which rises from the arch area to the horizontal section and which is lowered relative to the horizontal section in such a way that it increases the elevation δ h of the lower edge of the middle door leaf element compared to the upper edge of the middle door leaf element. For this purpose, the kink section preferably has at least the length δ x. The horizontal section is furthermore preferably offset from the end of the arc region adjoining the kink section by at least δ h in the direction of gravity upwards. In this way, the lower edge of the central door leaf element is always arranged below or at the same height as the upper edge of the central door leaf element. Then the angle θ between the middle and the upper door leaf element is always in the range between 0 and 180 °.

According to the invention, the kink section is straight. The horizontal section is also linear in accordance with the invention. However, it is not limited to this.

In one embodiment of the invention, the height H in the direction of gravity of a door leaf element trailing a leading door leaf element can be selected such that the upper edge of the trailing door leaf element, while its lower edge during the transition of the door leaf from the closed position into the open position is arranged in the region of the vertical segment, can also be arranged in the region of the vertical segment, the arc segment or the kink section. If the lowering of the lower edge of the kink section compared to the horizontal section is adjusted accordingly depending on the radius of the arc segment and the height H, it can always be ensured in this way that the lower edge of the leading door leaf element is always below the upper edge of the leading door leaf element is arranged. In other words, the height H of the trailing door leaf element is set smaller than the distance between the end region of the vertical segment adjoining the arch segment and the end region of the horizontal segment adjoining the kink segment. It is thus avoided that, as is the case with conventional guide rail arrangements, the lower edge of the trailing door leaf element is arranged in the region of the vertical segment and, at the same time, the upper edge of the trailing door leaf element is arranged in the horizontal section, which can result in an overturning.

A sectional door according to the invention is preferably designed such that the kink section has a length in the range from 100 mm to 700 mm, preferably in the range from 150 mm to 650 mm and particularly preferably in the range from 200 mm to 580 mm. According to the invention, the kink section includes an angle α with an extension line of the horizontal section, α between 0.8 ° and 5.7 °, preferably between 0.88 ° and 3.8 ° and particularly preferably between 0.99 ° and 2, 9 °. Furthermore, starting from the end adjoining the horizontal section, the kink section can drop downward in the direction of gravity by a maximum of 15 mm, preferably a maximum of 10 mm and particularly preferably a maximum of 8 mm. If the angle α is too small or the drop in the buckling section in the direction of gravity is too small, the overturning of the door leaf elements cannot be counteracted to a satisfactory extent. If the angle α is too large, an edge can be formed in the transition region between the kink section and the horizontal section, which has a disruptive effect on the uniform movement of the door leaf. This can lead to disturbing noise when the door leaf moves from the open to the closed position and vice versa. In addition, undesirable forces can arise between the neighboring door leaf elements. If the articulated section has a length that is greater than 700 mm, or if the articulated section is designed such that it begins to drop more than 15 mm from the horizontal section, this can have a disadvantageous effect on the installation situation of the sectional door.

In a further embodiment of the invention, the kink section can merge into the horizontal section in an intermediate region adjacent to the horizontal section in an arc shape. This allows a more even transition of the door leaf elements from the kink section to the horizontal section. This is particularly desirable at large angles α. Thus, for example, an undesirable noise development, which is caused by a kink formed in the intermediate area between the kink section and the horizontal section, or a mechanical load on the connection of successive door leaf elements can be avoided.

In a further embodiment of the invention, the door leaf elements can be connected to one another by connection arrangements such that they can be tilted. The connection arrangements can have hinges which are arranged on the inside of the door leaf. However, the invention is not limited to this embodiment. For example, the door leaf elements can also be tilted towards one another by a special design of the adjoining upper and lower edges of adjacent door leaf elements. By designing the guide rail arrangement according to the invention, damage to the hinges can now be counteracted.

In a sectional door according to the invention, the door leaf can be guided along its predetermined path by guide arrangements arranged on the door leaf and interacting with the guide rail arrangement. The guide elements can have rollers. The guide arrangements can be arranged in the area of the hinges on the upper edge of a door leaf element. The guide arrangements or rollers can be attached to the door leaf elements separately from the connection arrangements or hinges. However, the hinges can also be designed as hinge roller holders holding the rollers. In this case, the rollers are attached directly to the hinge using the hinge roller holder.

A further embodiment of a sectional door according to the invention is characterized in that the roller can have a roller axis A and the hinge can have a hinge pivot point D and a length of a projection of a connecting line of the roller axis A with the hinge pivot point D, THERE , has a length d _SA on a straight line running orthogonally to the door leaf element having the roller, and the kink section starting from the horizontal section at least d _DA - d _SA falls down, where d _{DA is} a length of the connecting line THERE is.

Already in the context of the explanation of the phenomenon of overturning, it was explained above that the triangle Δ SDA is rectangular, where S is an intersection of a straight line that runs parallel to the door leaf element through the hinge pivot point D with a straight line that is perpendicular to the door leaf element and through the Roller axis A runs, designated. It is THERE the hypotenuse and SAT a catheter of the right triangle Δ SDA. It was further explained above that the maximum increase in the upper edge of the lower door leaf element (and thus also the maximum increase in the lower edge of the central door leaf element) compared to the upper edge of the central door leaf element is δh = d _DA - d _SA . If, therefore, the kink section, starting from the horizontal section, falls at least by (d _DA - d _SA ) _max downwards from its end adjacent to the arch section, the lower edge of the central door leaf element is always arranged below the upper edge of the central door leaf element, and it comes not to buckle. Here, (d _DA - d _SA ) _max denotes the maximum difference for the door leaf of a sectional door according to the invention, which results above taking into account the variations in the roller mounting.

In addition to the sectional door described above, a guide rail arrangement for the sectional door described above should also be protected.

The idea of the invention can also be used for side sectional doors in which the guide rails are arranged overall in horizontal planes and the tilting axes run approximately in the direction of gravity, in which case the articulated sections also extend from the arch segment into the space to be closed with the door leaf.

Figur 1a

eine Seitenansicht eines herkömmlichen Sektionaltors beim Übergang von der Schließstellung in die Öffnungsstellung, wobei in einem Verbindungsbereich eines bei der Öffnungsbewegung vorderen und eines mittleren Torblattelements eine Überknickung auftritt,

Figur 1b

eine Seitenansicht des in Figur 1 dargestellten herkömmlichen Sektionaltors, wobei das in Figur 1a gezeigte bei der Öffnungsbewegung hintere Torblattelement in einem Vertikalsegment der Führungsschienenanordnung angeordnet ist,

Figur 1c

eine Seitenansicht des in Figur 1a dargestellten herkömmlichen Sektionaltors, wobei das in Figur 1a gezeigte bei der Öffnungsbewegung hintere Torblattelement in das Überkopfsegment einläuft,

Figur 2

eine Seitenansicht eines herkömmlichen Sektionaltors, wobei Bereiche, in denen durch die Überknickung Schäden entstehen, mit Pfeilen gekennzeichnet sind,

Figur 3a

eine Darstellung eines durch Überknickung beschädigten Torblatts,

Figur 3b

eine Darstellung durch Überknickung beschädigter Bestandteile von Scharnieren,

Figur 4

einen Ausschnitt eines erfindungsgemäßen Überkopfsegments mit einem Knickabschnitt und einem Horizontalabschnitt,

Figur 5

eine Darstellung, welche die Verringerung oder Vermeidung einer Überknickung der Torblattelemente bei einem erfindungsgemäßen Sektionaltor darstellt.

The invention is explained below with reference to the drawing, to which reference is expressly made with regard to all details that are essential to the invention and are not detailed in the description. The drawing shows:

Figure 1a

a side view of a conventional sectional door in the transition from the closed position to the open position, wherein in a connecting area of a front and a central door leaf element during the opening movement a kink occurs

Figure 1b

a side view of the in Figure 1 shown conventional sectional gate, which in Figure 1a the door leaf element shown in the opening movement is arranged in a vertical segment of the guide rail arrangement,

Figure 1c

a side view of the in Figure 1a shown conventional sectional gate, which in Figure 1a the door leaf element shown in the opening movement runs into the overhead segment,

Figure 2

a side view of a conventional sectional door, areas in which damage is caused by the buckling are marked with arrows,

Figure 3a

a representation of a door leaf damaged by kinking,

Figure 3b

a representation of damaged components of hinges by buckling,

Figure 4

a section of an overhead segment according to the invention with a kink section and a horizontal section,

Figure 5

a representation which represents the reduction or avoidance of kinking of the door leaf elements in a sectional door according to the invention.

The above-mentioned problem of overturning, which occurs in conventional sectional doors, is explained below with reference to FIG Figures 1a to 1c explained.

Figure 1a shows a section of a conventional sectional door 1 during the transition from the closed position to the open position. The illustration shows the overhead segment 40 of a guide rail 30 of a guide rail arrangement 20. Furthermore, the figure shows three door leaf elements 12, 14, 16 arranged one behind the other. According to their arrangement in the direction of gravity SR in the closed position, the door leaf elements are referred to as upper door leaf element 16, middle door leaf element 14 and lower door leaf element 12. When the door leaf 10 is moved in the opening direction x, the middle door leaf element 14 runs after the upper door leaf element 16. Likewise, the lower door leaf element 12 runs the middle door leaf element 14 to. The upper door leaf element 16 borders on its lower edge 16b in a transition region to the upper edge 14a of the central door leaf element 14. The middle door leaf element 14 borders on its lower edge 14b in a transition region to the upper edge 12a of the lower door leaf element 12. The door leaf elements 12 and 14 can be connected via a connection arrangement 50. The connection arrangement 50 can have a hinge 52, for example.

The door leaf elements 16, 14, 12 can be guided by guide arrangements 60 with respect to a guide rail 30. The guide arrangements 60 can have rollers 62. This case is in Figure 1a to 1c shown. The rollers 62 have roller axes A. In the present case, the rollers 62 are arranged on the upper edges 12a, 14a, 16a of the door leaf elements 12, 14, 16. But you are not limited to this arrangement.

In Figure 1a only the overhead segment 40 of the guide rail arrangement 20 is shown. However, the guide rail arrangement 20 also has a vertical segment 32 (see Figure 1b ) and an arc segment 34 connecting the vertical segment 32 and the overhead segment 40. The overhead segment 40 of a conventional sectional door 1 is designed essentially in a straight line. In Figure 1a the overhead segment 40 is arranged approximately parallel to the horizontal direction HR. The space to be closed with the door leaf 10 is in Figure 1a arranged below and to the right of the door leaf elements 12, 14, 16.

The door leaf elements 12, 14, 16 can be tilted relative to one another with respect to tilting axes that run parallel to one another and approximately perpendicular to the direction of gravity SR. If you designate the pivot points of the hinges with D, the tilt axes can e.g. correspond to the horizontal connecting lines of the hinge pivot points D.

To explain the phenomenon of buckling, three distances are introduced below. First, the distance between the hinge pivot D and the roller axis A is denoted by d _DA . The projection of the connecting line THERE on a straight line that intersects the roller axis A and is perpendicular to the door leaf element 12, 14, 16, on which the roller 62 is arranged, defines an intersection point S. The intersection point S also lies on a straight line that is on the door leaf element 12, 14, 16 is vertical and runs through the roller axis A. The distance between the intersection S and the roller axis A, d _SA , can be used as the component of the connecting line THERE be understood perpendicular to the door leaf element 12, 14, 16. The connecting lines SD and SAT are perpendicular to each other. The distance between the hinge pivot point D and the intersection point S is referred to as d _DS . The distances d _SA and d _DA are now used to explain the phenomenon of kinking. Figure 1b shows a situation in which the upper edge 12a of the lower door leaf element 12 is arranged in the vertical segment 32 of the guide rail arrangement 20. The connecting line SAT is arranged parallel to the horizontal direction HR and perpendicular to the direction of gravity SR. In particular, the connecting line SAT perpendicular to the vertical segment 32 of the guide rail 30. The distance d _SA thus specifies the distance of the upper edge 12a of the lower door leaf element 12 from the guide rail arrangement 20.

In Figure 1c a situation is now shown in which the upper edge 12a of the lower door leaf element 12 has run into the overhead segment 40 of the guide rail arrangement 20. Now is the connecting line THERE perpendicular to the overhead segment 40. The distance between the upper edge 12a of the lower door leaf element 12 and the overhead segment 40, and thus the guide rail arrangement 20, is predetermined by the distance d _DA . As can be seen from the above explanations, the triangle Δ SDA is rectangular. The side DA of the triangle is the hypotenuse of the triangle Δ SDA, and the sides SA and SD are the cathets of the triangle. Hence d _DA > d _SA . The distance of the upper edge 12a of the lower door leaf element 12 from the guide rail arrangement 20 is thus greater at a time when the upper edge 12a of the lower door leaf element 12 runs into the overhead segment 40 than at the time when the upper edge 12a of the lower Door leaf element 12 is arranged in the vertical segment 32.

In Figure 1a A situation is now shown in which the upper edge 14a of the middle door leaf element 14 has already run a good way into the overhead segment 40. Relative to the upper edge 14a of the middle door leaf element 14, the connecting line SA is again perpendicular to the guide rail arrangement 20. Thus, the distance between the upper edge 14a of the door leaf element 14 and the guide rail arrangement 20, ie the overhead segment 40, by the distance d _SA specified. On the other hand, it's like Figure 1a it can be seen that the distance of the upper edge 12a of the door leaf element 12 from the guide rail arrangement 20 is predetermined by d _DA > d _SA . As a result, the upper edge 12a of the lower door leaf element 12 is raised compared to the upper edge 14a of the central door leaf element 14. Because of The connection of the door leaf elements 12, 14 thus raises the lower edge 14b of the middle door leaf element 14 in comparison to the lower edge 16b of the upper door leaf element 16.

In the following, E1 is a plane which is parallel to the surface of the central door leaf element 14 which faces the space to be closed with the door leaf 10. E2 denotes a plane which runs parallel to the surface of the upper door leaf element 16 which faces the space to be closed with the door leaf 10. The intersection angle of the planes E1 and E2 is also referred to as θ. Adjacent door leaf elements 12, 14, 16 of sectional doors 1 are usually designed such that the angle θ is in the range between 0 and 180 °. This ensures, on the one hand, that the door leaf elements 12, 14, 16 can be transferred along the curved segment 34 from the open position to the closed position and vice versa. On the other hand, this choice of the angle θ prevents the door leaf 10 from being pressed in from the outside. However, if in the present case the lower edge 14b of the middle door leaf element 14 is raised in comparison to the upper edge 14a of the middle door leaf element 14 and thus also in comparison to the lower edge 16b of the upper door leaf element 16, the angle θ is greater than 180 °. One speaks of an overturning of the door leaf elements 14, 16.

Experience has shown that the angle θ is approximately a maximum of 3 °. But even this small angle can lead to considerable damage to the door leaf elements 14, 16 and to the connection arrangements 50, 52. Such damage is in the Figures 3a and 3b shown. Figure 3a shows damage to the upper edge 14a of the central door leaf element 14. In Figure 3b components of hinges 52 damaged by the buckling are shown.

The emergence of in the Figures 3a and 3b damage shown may be with reference to Figure 2 be understood. In Figure 2 areas in which additional forces occur due to the buckling are indicated by arrows. On the one hand, the arrows P ₁₄ and P ₁₆ denote areas on the middle door leaf element 14 and the upper door leaf element 16 which are subjected to additional forces due to the overturning. Because of these forces, the attachment of the hinges 52 to the door leaf elements 14, 16 can be loosened and, in the worst case, can be completely loosened. In addition, the interlocking door leaf elements 14, 16 can be subjected to additional stresses in the area indicated by the arrow P _A be. This can damage the door leaf elements 14, 16 in this area.

It should be noted that the buckling is caused, among other things, by the fact that the hinge pivot point D is arranged in the thickness direction DR of the door leaf elements between the outer surface and the inner surface of the door leaf elements 12, 14, 16, and that the roller fastening is arranged below the hinge pivot point D. and is spaced from the door leaf elements 12, 14, 16. The arrangement of the hinge pivot D between the door leaf elements 12, 14, 16 in the thickness direction is therefore desirable in order to avoid that when the door leaf elements 12, 14, 16 transition from the open to the closed position and vice versa, a large gap between the adjoining lower ones and upper edges of adjacent door leaf elements 12, 14, 16, which creates the risk of body parts, especially fingers, being pinched. A spacing of the rollers 62 from the door leaf elements 12, 14, 16 is necessary in order to prevent the door leaf elements 12, 14, 16 from rubbing against a sealing arrangement arranged on the frame. The maximum increase δh _{max of} the lower edge 14b of the middle door leaf element 14 compared to the upper edge 14a of the middle door leaf element 14 thus depends on the arrangement of the roller 62 and the arrangement of the hinge pivot point D. In addition, the height H of the individual door leaf elements 12, 14, 16 and the overall height of the sectional door 1 are decisive for the maximum increase δh _{max of} the lower edge 14b of the middle door leaf element 14.

In Figure 4 An overhead segment 40 of a sectional door 1 according to the invention or a guide rail arrangement 20 according to the invention is shown. The overhead segment 40 has a horizontal section 44 and a kink section 42. In an installation situation, the bent section 42 is connected to the curved segment 34 at its end region 41.

The horizontal section 44 can run approximately parallel to the horizontal direction HR. The horizontal section 44 can, as it is in Figure 4 is shown to be rectilinear. However, it is not limited to this. The horizontal section 44 can further include an acute angle with the horizontal direction HR instead of its approximately parallel orientation to the horizontal direction HR.

The kink section 42 slopes downward from an end 46 adjoining the horizontal section 44 towards the arch segment 34 (not shown). In order to counteract an overturning of the door leaf elements 12, 14, 16 or to prevent them altogether, the drop of the folding section 42 with respect to the horizontal section 44 is preferably configured as follows: Figure 1a it can be seen that the maximum increase δh _{max of} the lower edge 14b of the middle door leaf element 14 compared to the upper edge 14a of the middle door leaf element 14 is given by δh _max = d _DA - d _SA > 0. Because the hypotenuse of a right-angled triangle is always longer than its cathete. If h is now the distance of the end region 41 of the kink section 42 from the extension line of the lower edge of the horizontal section 44 in the direction of gravity SR, then the condition h> δh _max is preferably met. As a result, the kinking of the door leaf elements 14, 16 can be reduced or even completely prevented.

A specific example of the configuration of the bent section 42 of an overhead segment 40 of a sectional door 1 according to the invention or of a guide rail arrangement 20 according to the invention is given below. In the example, the distance d _DA = 43.51 mm, the distance d _SA = 35.63 mm, so that the reduction h = 10 mm of the kink section 42 is greater than the maximum increase δh _max = 7.88 mm of the lower one Edge 14b of the central door leaf element 40. The length of the bent section L _K is preferably set in a range from 200 to 580 mm and is set to L _K = 550 mm in the example given.

The embodiment of the in Figure 4 The overhead segment 40 shown is characterized in that the kink section 42 merges into the horizontal section 44 in an intermediate area 48 adjacent to the horizontal section 44. The arc has a radius R. This enables a more even transition of the door leaf elements 12, 14, 16 from the kink section 42 into the horizontal section 44. This can counteract, for example, undesired noise generation, which can be caused by a kink formed in the intermediate region 48 between the kink section 42 and the horizontal section 44. An additional mechanical load on the connection of successive door leaf elements 12, 14, 16 is counteracted.

By means of the Figure 5 The illustration shown can be seen how the use of an overhead segment 40 of the sectional door 1 according to the invention or the Guide rail arrangement 20 according to the invention with a kink section 42 and a horizontal section 44 of the overturning of the door leaf elements 12, 14, 16 can be counteracted or this can even be prevented entirely. Figure 6 differs from that in Figure 1a shown situation in that instead of in Figure 1 overhead segment 40 running parallel to the horizontal direction HR, an overhead segment 40 according to the invention with a kink section 42 and a horizontal section 44 is used. As above with reference to Figure 1a has been explained, the raising of the lower edge 14b of the central door leaf element 14 is greatest in an area in which the lower edge 14b of the central door leaf element 14 has just run out of the curved segment 34 of the guide rail 30. The further the lower edge 14b of the middle door leaf element 14 moves in the horizontal direction HR, the smaller the increase in the lower edge 14b of the middle door leaf element 14 compared to the upper edge 14a of the middle door leaf element 14. As can be seen from FIG the overhead segment 40 is designed according to the invention with a kink section 42 which rises from the end region 41 adjoining the arch segment 34 in the direction of the horizontal section 44. The end region 41 of the kink section 42 adjoining the bottom segment 34 is therefore lowered by a height h in the direction of gravity SR compared to the end 46 of the kink section 42 adjoining the horizontal section 44. The kink section 42 thereby forms an angle α with the horizontal HR. As a result, the lower edge 14b of the central door leaf element 14 is lowered in the direction of gravity SR in a region of the guide rail arrangement 20 in which an increase in the lower edge 14b of the central door leaf element 14 would result in an overturning in a conventional sectional door. The lower edge 14b of the middle door leaf element 14 is then always arranged below or at the same height as the upper edge 14a of the middle door leaf element 14. It is thereby achieved that the angle θ between the inner surface of the door leaf element 14 and the inner surface of the door leaf element 16 is always less than 180 °. This prevents the overturning occurring in conventional sectional doors 1.

A sectional door according to the invention and a guide rail arrangement according to the invention for a sectional door are thus characterized in that the risk of damage to the door leaf is reduced even when used for a long time.

LIST OF REFERENCES

1

Sectional gate

10th

Door leaf

11

Tilt axis

12

lower door leaf element

12a

upper edge of the lower door leaf element

12b

lower edge of the lower door leaf element

14

middle door leaf element

14a

upper edge of the middle door leaf element

14b

lower edge of the middle door leaf element

16

upper door leaf element

16a

upper edge of the upper door leaf element

16b

lower edge of the upper door leaf element

20th

Guide rail arrangement

30th

Guide rail

32

Vertical segment

34

Arc segment

40

Overhead segment

41

End area

42

Buckling section

44

Horizontal section

46

end adjacent to the horizontal section

48

Intermediate area

50

Connection arrangement

52

hinge

54

Hinge roll holder

60

Guide arrangement

62

Roller

SR

Gravity

MR

Horizontal direction

DR

Thickness direction

A

Roller axle

D

Hinge pivot

S

Intersection

d _DA

Distance hinge pivot point - roller axis

d _SA

Distance of the intersection S from the roller axis A

d _SD

Distance of the intersection from the hinge pivot D

H

Height of a door leaf element

R

Radius of the intermediate area

α

Angle between the buckling section and the extension line of the horizontal section

θ

angle enclosed by adjacent door leaf elements

H

Lowering of the kink section

x

Opening direction of the gate

L _K

Length of the buckling section

Claims (13)

1. A sectional door having a door leaf (10) that can be moved, along a path predefined by a guide rail arrangement (20), from a closed position, which closes a wall opening and in which it lies approximately parallel to the direction of gravity (SR), into an open position, in which it is substantially overhead, wherein said door leaf has a plurality of door leaf elements (12, 14, 16), which can be tilted relative to one other in relation to tilting axes (11) running in parallel and approximately perpendicular to the direction of gravity (SR), wherein the guide rail arrangement (20) has at least one guide rail (30) with at least one vertical segment (32), extending approximately in the direction of gravity (SR), one overhead segment (40), which is overhead, and a curved segment (34), which connects the vertical segment (32) and the overhead segment (40) to each other, and wherein the overhead segment (40) has a buckle section (42), which is connected to the curved segment (34) via an end region (41), and a horizontal section (44), which adjoins the buckle section (42) and runs preferably approximately parallel to the horizontal direction (HR), and the buckle section (42) slopes downwards towards the curved segment (34), starting from an end (46) adjoining the horizontal section (44), characterised in that the buckle section and the horizontal section are arranged in a straight line and the buckle section (42) forms an angle α with an extension line of the horizontal section (44), wherein α is between 0.8° and 5.7°, preferably between 0.88° and 3.8° and particularly preferably between 0.99° and 2.9°.
2. The sectional door according to claim 1, characterised in that the height H, in the direction of gravity, of a door leaf element (12) trailing a leading door leaf element (14) is chosen so that the top edge (12a) of the trailing door leaf element (12) is still in the area of the vertical segment (32), curved segment (34) or buckle section (42) as the door leaf (10) moves from the closed position to the open position, whereas the bottom edge (12b) is still located in the area of the vertical segment (32).
3. The sectional door according to one of the preceding claims, characterised in that the buckle section (42) has a length (LK) within a range of 100 mm to 700 mm, preferably within a range of 150 mm to 650 mm and particularly preferably within a range of 200 mm to 580 mm.
4. The sectional door according to one of the preceding claims, characterised in that the buckle section (42), starting from an end adjoining the horizontal section (44), slopes downwards in the direction of gravity (SR) by a maximum of 15 mm, preferably by a maximum of 10 mm and preferably by a maximum of 8 mm.
5. The sectional door according to one of the preceding claims, characterised in that the buckle section (42) transitions into the horizontal section (44) in an intermediate region (48) in a curved shape adjoining the horizontal section (44).
6. The sectional door according to one of the preceding claims, characterised in that the door leaf elements (12, 14, 16) are connected to each other with connecting arrangements (50) so that they can be tilted relative to one other.
7. The sectional door according to claim 6, characterised in that the connecting arrangements (50) comprise hinges (52) that are located on the inside of the door leaf.
8. The sectional door according to one of the preceding claims, characterised in that the door leaf (10) is guided, along its predefined path, by guiding arrangements (60) located on the door leaf (10) and acting together with the guide rail arrangement (20).
9. The sectional door according to claim 8, characterised in that the guiding arrangements (60) have rollers (62).
10. The sectional door according to claim 8 or 9, characterized in that the guiding arrangements (60) are located in the area of the hinges (52) at the top edge (12a, 14a, 16a) of a door leaf element (12, 14, 16).
11. The sectional door according to claim 10 or 11, characterized in that the hinges are designed as hinged roller holders holding the rollers.
12. The sectional door according to one of claims 9 to 11, characterized in that the roller (62) has a roller axis (A) and the hinge (52) has a hinge pivot point (D), a length of a projection of a line DA connecting the roller axis (A) with the hinge pivot point (D) along a straight line running orthogonally to the door leaf element (12, 14, 16) having the roller (62) corresponds to a length d_SA and the buckle section (42) slopes downwards by at least (d_DA - d_SA)_max starting from the horizontal section (44), wherein d_DA is a length of the connecting line DA and (d_DA - d_SA)_max designates the maximum difference, for the door leaf of a sectional door according to the invention, obtained taking into account the variations in the positioning of the rollers.
13. The guide rail arrangement for a sectional door (1), wherein the guide rail arrangement (20) has at least one guide rail (30) with at least one vertical segment (32), extending approximately in the direction of gravity (SR), one overhead segment (40), which is overhead, and a curved segment (34), which connects the vertical segment (32) and the overhead segment (40) to each other, and wherein the overhead segment (40) has a buckle section (42), which is connected to the curved segment (34) via an end region (41), and a horizontal section (44), which adjoins the buckle section (42) and runs preferably approximately parallel to the horizontal direction (HR), and the buckle section (42) slopes downwards towards the curved segment (34), starting from an end (46) adjoining the horizontal section (44), characterised in that the buckle section and the horizontal section are arranged in a straight line and the buckle section (42) forms an angle α with an extension line of the horizontal section (44), wherein α is between 0.8° and 5.7°, preferably between 0.88° and 3.8° and particularly preferably between 0.99° and 2.9°.

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