EP3469179A1

EP3469179A1 - Sectional door and guide rail arrangement

Info

Publication number: EP3469179A1
Application number: EP17727103.8A
Authority: EP
Inventors: Michael Brinkmann
Original assignee: Hoermann KG Brockhagen
Current assignee: Hoermann KG Brockhagen
Priority date: 2016-06-14
Filing date: 2017-05-26
Publication date: 2019-04-17
Anticipated expiration: 2037-05-26
Also published as: WO2017215778A1; PL3469179T3; EP3469179B1; DE102016007222A1

Abstract

The invention relates to a sectional door (1) having a door leaf (10) that can be moved from a closed position, which closes a wall opening and in which it lies approximately parallel to the direction of gravity (SR), along a path predefined by a guide rail arrangement (20) into an open position, in which it is substantially overhead, and 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). 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. The sectional door is further developed according to the invention in that 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 (HR), and in that the buckle section (42) slopes downwards towards the curved region (34), starting from an end (46) adjoining the horizontal section (44).

Description

SECTIONAL TORCH AND GUIDE RAIL ARRANGEMENT

The invention relates to a sectional door with a closed by a wall opening closing position in which it is arranged approximately parallel to the direction of gravity, along a path predetermined by a guide rail arrangement in an open position in which it is arranged substantially overhead, convertible and a plurality relative to each other and in approximately perpendicular to the direction of gravity extending tilt axes against each other tiltable Torblattelemente having door leaf, the guide rail assembly at least one guide rail with at least one approximately in the gravity direction extending vertical segment, an overhead overhead segment and the vertical segment and the overhead segment interconnecting arc segment and a guide rail assembly for such a sectional door.

Gates of this type are used for example in the form of garage doors, factory gates or hall doors. In this case, the door leaf is usually formed in several parts in the manner described above, wherein it is aligned in the closed position approximately in a vertical plane and circulated by a frame frame. In order to open such a door, the door leaf is usually moved along a path through the guide rail. nenanordnung predetermined path moves in an overhead division. In the open position, the door leaf is usually arranged approximately parallel to the ground 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 thereby guided by means of the guide rail arrangement, which in the closed position of the door leaf approximately parallel to the lateral edges of the door leaf approximately in the direction of gravity vertical segments, in the open position of the door leaf approximately parallel to the lateral edges of the door above the head overhead overhead segments and the Vertical segments and the overhead segments interconnecting arc segments has. The vertical segments extending approximately in the vertical direction are usually attached to the frame beams fastened in the area of the soffit of the wall opening to be closed by the door leaf.

During an opening movement of the door leaf, the individual door leaf elements are first moved along the gravity segments arranged in the vertical segments upwards, then deflected along the arc segment, to be finally transferred to a predetermined by the overhead segments overhead division. This movement is made possible in the region of the arc segments by virtue of the fact that the door leaf has a plurality of door leaf elements arranged one behind the other in the door leaf movement direction and tiltable relative to one another relative to the direction of movement of the tilt axes. Two stacked door leaf elements are connected to each other in a connection area. The connection of the Torblattelemente each other can be done for example by a special configuration of the adjacent edges of the stacked door leaf elements. But it can also be done by arranged on the Torblattelementen possibly hinge-like connection arrangements.

With conventional sectional doors, damage has occurred in the past after a certain period of operation in the transition region of successive door leaf elements. For example, a chipping of the door leaf coating has occurred in the transition region of the door leaf elements, which has led to a deterioration of the visual appearance of the door leaf. Furthermore, damage to the door leaf elements in the transition area or damage to the door leaf elements interconnecting connecting arrangements, such as hinges 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 More overhead in the maintenance of conventional overhead doors and led to the generation of undesirable costs.

In view of these problems in the prior art, the object of the invention is 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 in that the overhead segment has a connected via an end region with the arc segment buckling and adjacent to the buckling portion and preferably approximately parallel to the horizontal horizontal section and the buckling portion of an adjacent to the horizontal portion of the end down on the bow area to fall off.

The invention is based on the finding that damage to the door leaf elements can be counteracted by the overbending occurring in the use of conventional sectional doors and described below as a result of the inventive design of the overhead segment.

The occurrence of the problem of overbending when using a conventional sectional door will be exemplified below. This problem occurs at the transition of the door from the closed position to the open position. For explanation, three door leaf elements arranged one above the other in the closed position are considered below. According to their arrangement in the direction of gravity, the three Torblattelemente be referred to as the upper, middle and lower Torblattelement. In the closed position, the three Torblattelemente are arranged approximately in a plane. During the movement of the door leaf from the closed position into 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 with the upper edge of the middle door leaf element in the closed position in the direction of gravity. The middle door leaf element travels during the movement of the door leaf from the closed position to the open position to the upper door leaf element. The middle door leaf element is connected at its lower edge in the direction of gravity with an upper edge of the lower door leaf element in the direction of gravity. During the movement of the door leaf from the closed position into the open position, the lower door leaf element follows the middle door leaf element. The three door leaf elements are each tiltable relative to each other with respect to an approximately parallel to the adjacent edges of adjacent Torblattelemente extending tilting axes. Hereinafter, as the inside of the door leaf or the inside of a door leaf element that side of the door leaf or the door leaf element is referred to, which faces the space to be closed with the door leaf. Further, Θ denotes an angle enclosed by two planes E1 and E2, which are respectively enclosed in parallel with 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 along the arc segment from the open position into the closed position and vice versa. On the other hand prevents the door leaf is pressed from the outside. This ensures a secure closure of the space to be closed with the door leaf. In addition, it is prevented that upon contact of the door leaf from the outside body parts, in particular fingers, can be squeezed in the gap between two adjacent Torblattelementen. The condition that the angle Θ which is enclosed by the inner sides of adjacent Torblattelemente not greater than 180 °, for example, by a special configuration of mutually facing edges of adjacent Torblattelemente, such as in EP 0 304 642 A or EP 0 370 376 A is described, or guaranteed by a special embodiment of the interconnecting the adjacent edges connecting arrangements.

An overbending is now a situation in which the angle Θ is increased to Θ> 180 °. Such a buckling may occur in conventional sectional doors with conventional guide rail arrangements in the following case: Let us consider in the following the situation in which the door leaf is transferred from the closed position to the open position. In the situation to be considered, the upper and middle door leaf element should have already passed through the arc segment and run into the overhead segment. Next is the upper edge of the lower door leaf element have just passed through the arc segment. In a short area, as will be explained below, the upper edge of the lower door leaf element is then raised in comparison to the plane in which the upper door leaf element and the middle door leaf element are arranged. Due to the articulated connection between the lower and the middle door leaf element is then the lower edge of the middle Door leaf element raised. The lower edge of the middle door leaf element is then raised from the plane in which the upper door leaf element and the upper edge of the middle door leaf element are arranged. Thus, the angle Θ between the inner surface of the upper Torblattelements and the inner surface of the middle Torblattelements is greater than 180 °. The door leaf is thus bent over. As a result, stresses are generated in the connection region between the upper and the middle door leaf element. These permanently lead 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 inter alia due to the fact that the guiding elements guiding the door leaf elements, for example rollers, are arranged spaced apart from the tilting axes of adjacent door leaf elements in the height direction of the door leaf elements extending parallel to the direction of gravity in the closed position of the door leaf. This will be explained in the following for the case in which the guide arrangements comprise rollers with roller axes A and the door leaf elements are connected to one another by hinges with hinge pivot points D. Let S denote an intersection of a straight line which runs parallel to the door leaf element through the hinge pivot point D, with a straight line which runs perpendicular to the door leaf element and through the roller axis A. The connecting line SÄ is therefore equal to the projection of the connecting line DA on a straight line perpendicular to the surface of the Torblattelements on which the roller is fixed, and which passes through the roller axis A. Then the connecting lines SÄ and SD are the catheters and the connecting line DÄ is the hypothenuse of the right triangle Δ SDA. The lengths of the sides of the triangle are denoted d _D A, d _S D and d _SA , respectively. If the roller is arranged in the vertical segment or spaced apart from the arch segment in the overhead segment, the distance of the upper edge of each door leaf element of the guide rail assembly by d _S A is determined because SÄ is perpendicular to the Torblattelement. If, however, the roller arranged on the upper edge of the lower door leaf element has just passed through the arc segment, so that this door leaf element is inclined relative to the overhead segment, then DÄ is perpendicular to the guide rail for a certain time, and the distance of the upper edge of the lower door leaf element from the Guide rail assembly is given by d _D A> d _S A. Because the hypotenuse of a right triangle is always longer than its catheters. The distance of the upper edge of the lower Torblattelements of the overhead segment is thus given by d _DA , while the distance of the upper edge of the middle Torblattelementes is given by the overhead segment by d _SA <d _D A. The upper edge of the lower Torblattelements is thus raised relative to the upper edge of the middle Torblattelements.

The present invention is based on the following finding: The lifting δ h of the lower edge of the middle door leaf element in comparison with 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 arc segment. In this case, δ h preferably designates the maximum increase resulting from consideration of the possible variations of d _S A and d _D A for the rollers mounted on successive door leaf elements. The farther the upper edge of the lower Torblattelements enters the overhead segment, the smaller is the increase δ h. After a traversed distance δ x in the overhead segment, the increase δ h has dropped to 0. The overbending of the Torblattelemente can thus, as claimed in the present invention, be counteracted by the fact that the overhead segment has to be increased from the bow portion of the horizontal portion to bending portion which is lowered relative to the horizontal portion so down that he δ the increase h the lower edge of the middle door leaf element over the upper edge of the middle Torblattelements compensated. Preferably, the buckling portion has at least the length δ x. More preferably, the horizontal portion is offset relative to the adjacent to the bending portion end of the arc area by at least δ h in the direction of gravity upwards. In this way, the lower edge of the middle door leaf element is always arranged below or at the same height as the upper edge of the middle 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 °.

The buckling portion can be formed straight. He is not limited to that. The horizontal section can run approximately parallel to the horizontal plane. But he can also include an acute angle with the horizontal. The horizontal section may be rectilinear. He is not limited to that.

In one embodiment of the invention, the height H in the direction of gravity of a trailing Torblattelement trailing Torblattelements be chosen so that the upper edge of the trailing Torblattelements, while its lower edge during the transition of the Torblatt from the closed position to the open position still arranged in the region of the vertical segment is still to be arranged in the region of the vertical segment, the sheet segment or the buckling section. Will the lowering of the adjusted lower edge of the kink portion relative to the horizontal section depending on the radius of the sheet segment and the height H, it can always be ensured in this way that the lower edge of the leading Torblattelements is arranged at any time below the upper edge of the leading Torblattelements. In other words, the height H of the trailing gate element is set smaller than the distance between the end region of the vertical segment adjoining the arc segment and the end region of the horizontal segment adjoining the bending section. Thus, it is avoided that, as is the case with conventional guide rail arrangements, the lower edge of the trailing Torblattelements is disposed in the region of the vertical segment and at the same time the upper edge of the trailing Torblattelements is arranged in the horizontal portion, which can lead to an overbending.

A sectional door according to the invention is preferably designed such that the buckling section has a length in the range of 100 mm to 700 mm, preferably in the range of 150 mm to 650 mm and particularly preferably in the range of 200 mm to 580 mm. In this case, the buckling section with an extension line of the horizontal section include an angle α, where α between 0.8 ° and 5.7 °, preferably between 0.88 ° and 3.8 ° and more preferably between 0.99 ° and 2.9 ° is. Furthermore, starting from the end adjacent to the horizontal section, the buckling section can drop downwards by a maximum of 15 mm, preferably a maximum of 10 mm and particularly preferably a maximum of 8 mm in the direction of gravity. If the angle α is too small or the drop of the buckling section in the direction of gravity too low, the overbending of the Torblattelemente can not be counteracted to a satisfactory extent. If the angle α is too large, then in the transition region between the bending portion and the horizontal portion, an edge may be formed, which interferes with the uniform movement of the door leaf. This can lead to a disturbing noise during the movement of the door leaf from the open to the closed position and vice versa. In addition, undesirable forces can arise between the adjacent Torblattelementen. If the buckling section has a length which is greater than 700 mm, or if the buckling section is designed such that it drops more than 15 mm starting 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 buckling portion in an intermediate region adjacent to the horizontal portion in an arcuate shape in go over the horizontal section. This allows a more uniform transition of the door leaf elements of the buckling section in the horizontal section. This is desirable especially at high angles α. Thus, for example, an undesirable noise, which is caused by a formed in the intermediate region between the bending portion and the horizontal portion kink, or mechanical stress on the connection of successive Torblattelemente be avoided.

In a further embodiment of the invention, the Torblattelemente can be connected by connecting arrangements against each other tilted together. The connection arrangements can have hinges which are arranged on the door leaf inside. The invention is not limited to this embodiment. Thus, the Torblattelemente can also be tilted by a special configuration of the adjacent upper and lower edges of adjacent Torblattelemente against each other. Due to the inventive design of the guide rail assembly now the damage of the hinges can 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 cooperating with the guide rail arrangement. The guide elements may have rollers. The guide arrangements can be arranged in the region of the hinges at the upper edge of a door leaf element. The guide assemblies or rollers can be fastened separately from the connection arrangements or hinges on the door leaf elements. The hinges can also be designed as the rollers holding hinge-roll holder. In this case, the rollers are attached directly to the hinge via the hinge roller holder.

Another embodiment of a sectional door according to the invention is characterized in that the roller may have a roller axis A and the hinge may have a hinge pivot point D and a length of a projection of a line connecting the roller axis A with the hinge pivot point D, DA, to an orthogonal to the Running roller having Torblattelement extending straight line has a length d _SA and the buckling section, starting from the horizontal section at least d _DA - CI _SA falls downwards, where d _{DA is} a length of the connecting line DA. Already in the context of the explanation of the phenomenon of buckling was explained above that the triangle Δ SDA is rectangular, where S is an intersection of a straight line parallel to the Torblattelement by the hinge pivot point D, with a straight line perpendicular to the Torblattelement and through the Caster axle A runs, designated. Where DÄ is the hypotenuse and SÄ is a catheter of the right triangle Δ SDA. It has also been explained above that the maximum elevation of the upper edge of the lower door leaf element (and thus also the maximum elevation of the lower edge of the middle door leaf element) relative to the upper edge of the middle door leaf element is 5h = d _D A -d _S A. Thus, if the buckling portion descends downward from the horizontal portion opposite its end adjacent to the bow portion at least by (d _D A - d _S A) max, the lower edge of the middle door leaf member is always located below the upper edge of the middle door leaf member, and it does not over bend. In this case, (d _D A -d _S A) max designates the maximum difference for the door leaf of a sectional door according to the invention, which is the result above, taking into account the variations of the roller attachment.

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

Incidentally, the inventive concept can also be used for side section doors, in which the guide rails are arranged overall in horizontal planes and the tilting axes extend approximately in the direction of gravity, with the buckling sections in this case likewise extending from the arc segment into the space to be closed by the door leaf.

The invention will be explained with reference to the drawing, to which reference is expressly made with respect to all essential to the invention and in the description unspecified highlighted details. In the drawing shows:

FIG. 1 a shows a side view of a conventional sectional door during the transition from the closed position into the open position, wherein an overbending occurs in a connecting area of a front and a middle door leaf element during the opening movement,

FIG. 1 b shows a side view of the conventional sectional door shown in FIG. 1, the door panel element shown in FIG. 1a during the opening movement being arranged in a vertical segment of the guide rail arrangement,

2 a side view of the conventional sectional door shown in FIG. 1 a, wherein the door panel element shown in FIG. 1 a enters the overhead segment during the opening movement,

a side view of a conventional sectional door, with areas where damage is caused by the overbending, marked with arrows,

a representation of a damaged by overbending door leaf, a representation by overbending damaged components of hinges,

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

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

The above-mentioned problem of overbending occurring in conventional sectional doors will be explained below with reference to Figs. 1a to 1c.

FIG. 1a shows a section of a conventional sectional door 1 during the transition from the closed position into the open position. In the figure, the overhead segment 40 of a guide rail 30 of a guide rail assembly 20 is shown. In addition, the figure shows three successively arranged door leaf elements 12, 14, 16. 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 follows the upper door leaf element 16. Likewise, the lower door leaf element 12 follows the middle door leaf element 14. The upper door leaf element 16 abuts at its lower edge 16b in a transition region to the upper edge 14a of the middle door leaf element 14. The middle The door leaf element 14 adjoins the upper edge 12a of the lower door leaf element 12 at its lower edge 14b in a transition region. The connection of the door leaf elements 2 and 14 can take place via a connection arrangement 50. For example, the connection assembly 50 may include a hinge 52.

The door leaf elements 16, 14, 12 can be guided by guide arrangements 60 with respect to a guide rail 30. The guide assemblies 60 may include rollers 62. This case is shown in FIGS. 1a to 1c. The rollers 62 have roller axles 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 they are not limited to this arrangement.

In Figure 1a, only the overhead segment 40 of the guide rail assembly 20 is shown. However, the guide rail assembly 20 also has a vertical segment 32 (see FIG. 1 b) 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 substantially rectilinear. In FIG. 1 a, the overhead segment 40 is arranged approximately parallel to the horizontal direction HR. The space to be closed with the door leaf 10 is arranged below and to the right of the door leaf elements 12, 14, 16 in FIG. 1a.

The Torblattelemente 12, 14, 16 are mutually tiltable with respect to each other parallel to each other and approximately perpendicular to the direction of gravity SR tilting axes. If the pivot points of the hinges are denoted by D, the tilting axes can be made e.g. correspond to the horizontally extending connecting lines of the hinge pivot points D.

To explain the phenomenon of overbending, three distances are introduced below. First, the distance of the hinge pivot point D and the roller axis A is denoted by d _DA . The projection of the connecting line DA onto a straight line which 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 S. The point of intersection S also lies on a straight line which is perpendicular to the door leaf element 12, 14, 16 and extends through the roller axis A. The distance between the point of intersection S and the roller axis A, d _S A, can be understood as the component of the connecting line DA perpendicular to the door leaf element 12, 14, 16. The connecting lines S ^~ Ö and SÄ are perpendicular to each other. The distance between the Hinge pivot point D and the intersection S is referred to as d _D s. The distances d _S A and d _D A are now used to explain the phenomenon of overbending. FIG. 1 b shows a situation in which the upper edge 12 a of the lower door leaf element 12 is arranged in the vertical segment 32 of the guide rail arrangement 20. The connecting line SÄ is arranged parallel to the horizontal direction HR and perpendicular to the gravity direction SR. In particular, the connecting line SA is perpendicular to the vertical segment 32 of the guide rail 30. The distance d _S A thus specifies the distance of the upper edge 12 a of the lower door leaf element 12 from the guide rail arrangement 20.

FIG. 1c now shows a situation 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, the connection line DA is 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 assembly 20, is predetermined by the distance d _D A. As shown in the explanations above, 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 catheters of the triangle. Consequently, the distance of the upper edge 12a of the bottom Torblattelementes 12 of the guide rail assembly 20 is thus at a time, in which the upper edge enters 12a of the lower Torblattelementes 12 in the overhead segment 40 applies d _D ^A> D _S A, greater than the Timing in which the upper edge 12 a of the lower Torblattelementes 12 is arranged in the vertical segment 32.

FIG. 1a now shows a situation in which the upper edge 14a of the central door leaf element 14 has already run a good distance into the overhead segment 40. With reference 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, is defined by the Distance d _SA specified. In contrast, the distance of the upper edge 12a of the Torblattelementes 12 is as shown in Figure 1a, defined by the guide rail assembly 20 by _D d A> DSA. Consequently, the upper edge 12 a of the lower Torblattelementes 12 is raised compared to the upper edge 14 a of the middle Torblattelements 14. Due to the connection of the Torblattelemente 12, 14 is thus the lower edge 14b of the middle Torblattelementes 14 compared to the lower edge 16b of the upper door leaf element 16 is raised.

Hereinafter, E1 is a plane parallel to the surface of the center door leaf member 14 facing 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. Further, let als be the intersection angle of the planes E1 and E2. Adjacent Torblattelemente 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 arc segment 34 from the open position into the closed position and vice versa. On the other hand, is prevented by this choice of the angle Θ that the door leaf 10 is pressed from the outside. However, in the present case, if 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 overbending of the door leaf elements 14, 16.

Experience has shown that the angle Θ is about 3 ° maximum. But even this small angle can lead to significant damage to the door leaf elements 14, 16 and to the connecting assemblies 50, 52. Such damage is shown in Figures 3a and 3b. FIG. 3a shows a damage of the upper edge 14a of the central door leaf element 14. In FIG. 3b, components of hinges 52 damaged by the overbending are shown.

The development of the damage shown in FIGS. 3a and 3b can be understood with reference to FIG. In FIG. 2, regions in which additional forces occur due to the overbending are indicated by arrows. On the one hand, the arrows P ₁₄ and P ₁₆ indicate regions on the middle door leaf element 14 and the upper door leaf element 16, respectively, which are exposed to additional forces due to the overbending. Due to these forces, the attachment of the hinges 52 to the door leaf elements 14, 16 can be relaxed and in the worst case completely dissolve. In addition, the interlocking Torblattelemente 14, 16 in the area indicated by the arrow P _A additional stresses from be set. This can lead to damage of the door leaf elements 14, 16 in this area.

It should be noted that the overbending is caused inter alia by the hinge pivot point D being disposed in the thickness direction DR of the door leaf members between the outer surface and the inner surface of the door leaf members 12, 14, 16, and further, the caster mount being disposed below the hinge pivot point D. and spaced from the door leaf elements 12, 14, 16. The arrangement of the hinge pivot point D between the door leaf elements 12, 14, 16 in the thickness direction is therefore desirable in order to avoid that when passing the door leaf elements 12, 14, 6 from the open to the closed position and vice versa, a large gap between the adjacent lower and upper edges of adjacent Torblattelemente 12, 14, 16 is formed, whereby the risk of unwrapping of body parts, in particular of fingers, arises. A spacing of the rollers 62 from the door leaf elements 12, 14, 16 is necessary in order to avoid that the Torblattelemente 12, 14, 16 grind on a arranged on the frame seal assembly. The maximum increase 5h _{max of} the lower edge 14b of the middle Torblattelements 14 relative to the upper edge 14a of the middle Torblattelements 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 as well as the total height of the sectional door 1 are decisive for the maximum elevation δ _{max of} the lower edge 14 b of the middle door leaf element 14.

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

The horizontal section 44 can extend approximately parallel to the horizontal direction HR. The horizontal portion 44 may, as shown in Figure 4, be formed in a straight line. He is not limited to that. The horizontal section 44 may further include an acute angle with the horizontal direction HR instead of its orientation approximately parallel to the horizontal direction HR. The kink portion 42 drops down from an end 46 adjacent to the horizontal portion 44 to the sheet segment 34 (not shown). In order to counteract or prevent overbending of the door leaf elements 12, 14, 16, the drop of the kink section 42 is preferably configured as follows relative to the horizontal section 44. As can be seen from FIG. 1a, the maximum increase is 5h _{max of} the lower edge 14b of the middle one Door leaf element 14 compared to the upper edge 14a of the central door leaf element 14 by 5h _max = d _DA - dsA> 0 given. Because the hypotenuse of a right triangle is always longer than its catheters. If h is 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, the condition h> öh _max is preferably fulfilled. As a result, the overbending of the door leaf elements 14, 16 can be reduced or even completely prevented.

In the following, a concrete example of the configuration of the buckling 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. 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 portion 42 is greater than the maximum increase öh _max = 7.88 mm of the lower The length of the buckling portion L _K is preferably set in a range of 200 to 580 mm and is set to L = 550 mm in the example given.

The embodiment of the overhead segment 40 depicted in FIG. 4 is characterized in that the bending section 42 merges into the horizontal section 44 in an arcuate region adjacent to the horizontal section 44. The arc has a radius R. As a result, a more uniform transition of the door leaf elements 12, 14, 16 is made possible by the bending section 42 in the horizontal section 44. This can be counteracted, for example, an undesirable noise, which may be due to a formed in the intermediate region 48 between the bending portion 42 and the horizontal portion 44 kink. Furthermore, an additional mechanical loading of the connection of successive door leaf elements 12, 14, 16 is counteracted.

By means of the illustration shown in FIG. 5, it can be seen how the use of an overhead segment 40 of the sectional door 1 according to the invention or FIG Guide rail assembly 20 according to the invention with a kink portion 42 and a horizontal portion 44 of the overbending of the Torblattelemente 12, 14, 16 can be counteracted or this can even be completely prevented. FIG. 6 differs from the situation shown in FIG. 1 a in that instead of the over-head segment 40 used in FIG. 1, an overhead segment 40 having a bending section 42 and a horizontal section 44 is used. As explained above with reference to FIG. 1a, the raising of the lower edge 14b of the middle door leaf element 14 in a region in which the lower edge 14b of the central door leaf element 14 has just left the arc segment 34 of the guide rail 30 is greatest. The further the lower edge 14b of the middle door leaf element 14 moves in the horizontal direction HR, the smaller the elevation of the lower edge 14b of the middle door leaf element 14 is compared to the upper edge 14a of the middle door leaf element 14. As can be seen from FIG According to the invention, the overhead segment 40 is formed with a buckling section 42 which rises from the end region 41 adjoining the arc segment 34 in the direction of the horizontal section 44. The adjacent to the bottom segment 34 end portion 41 of the kink portion 42 is thus lowered in comparison to the adjacent to the horizontal portion 44 of the end 46 of the kink portion 42 by a height h in the direction of gravity SR. The buckling section 42 thereby encloses an angle α with the horizontal HR. As a result, the lower edge 14b of the middle door leaf element 14 is lowered in the direction of gravity SR in a region of the guide rail assembly 20 in which it would be overbending by raising the lower edge 14b of the middle door leaf element 14 in a conventional sectional door. The lower edge 14b of the central 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. This ensures 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 °. The occurring in conventional sectional doors 1 overbending is thereby prevented.

A sectional door according to the invention and a guide rail arrangement according to the invention for a sectional door are therefore distinguished by the fact that the risk of damage to the door leaf is reduced even with long-term use. LIST OF REFERENCE SIGNS

I sectional door

10 door leaf

I I 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

20 guide rail assembly

30 guide rail

32 vertical segment

34 arc segment

40 overhead segment

41 end area

42 kink section

44 horizontal section

46 adjacent to the horizontal section end

48 intermediate area

50 connection arrangement

52 hinge

54 Hinge Roll Holder

60 leadership arrangement

62 roller

SR gravity direction

HR horizontal direction

DR thickness direction

A caster axle

D hinge pivot

S intersection

d _D A Hinge pivot point distance - Caster axle dsA distance of the point of intersection S from the roller axis A

d _SD distance of the point of intersection from the hinge pivot point D

H height of a Torblattelements

R Radius of the intermediate area

α angle between the buckling section and the extension line of the horizontal section

Winkel angle enclosed by adjacent door leaf elements

h lowering of the kink section

x Opening direction of the gate

I_ _K Length of the kink section

Claims

EXPECTATIONS

1. Sectional door with a closed position closing a wall opening, in which it is arranged approximately parallel to the direction of gravity (SR), along a path predetermined by a guide rail arrangement (20) into an open position, in which it is arranged essentially overhead, transferable and a plurality of tilting axes (11) which can be tilted relative to one another and which are parallel to one another and approximately perpendicular to the direction of gravity (SR) (12, 14, 16). at least one vertical segment (32) extending approximately in the direction of gravity (SR), an overhead segment (40) arranged overhead and an arc segment (34) connecting the vertical segment (32) and the overhead segment (40) with one another, characterized in that the overhead segment (40) has a bend section (42) connected to the arch segment (34) via an end region (41) and a horizontal section (44) adjacent to the bend section (42) and preferably running approximately parallel to the horizontal (HR), and the bend section (42) slopes downwards towards the arch area (34) from an end (46) adjacent to the horizontal section (44).

2. Sectional door according to claim 1, characterized in that the height H in the direction of gravity of a door leaf element (12) trailing a leading door leaf element (14) is selected so that the upper edge (12a) of the trailing door leaf element (12), while its lower Edge (12b) is still arranged in the area of the vertical segment (32) when the door leaf (10) transitions from the closed position to the open position, is still arranged in the area of the vertical segment (32), the arch segment (34) or the bend section (42). .

3. Sectional door according to one of the preceding claims, characterized in that the bending section (42) has a length (LK) 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.

4. Sectional door according to one of the preceding claims, characterized in that the bend section (42) forms an angle α with an extension line of the horizontal section (44), where α is between 0.8 ° and 5.7 °, preferably between 0.88 ° and 3.8° and particularly preferably between 0.99° and 2.9°.

5. Sectional door according to one of the preceding claims, characterized in that the bending section (42), starting from the end adjacent to the horizontal section (44), is a maximum of 15 mm, preferably a maximum of 10 mm and particularly preferably a maximum of 8 mm in the direction of gravity (SR). falls off at the bottom.

6. Sectional door according to one of the preceding claims, characterized in that the bend section (42) merges into the horizontal section (44) in an arc shape in an intermediate area (48) adjacent to the horizontal section (44).

7. Sectional door according to one of the preceding claims, characterized in that the door leaf elements (12, 14, 16) are connected to one another so that they can be tilted relative to one another by connecting arrangements (50).

8. Sectional door according to claim 7, characterized in that the connecting arrangements (50) have hinges (52) which are arranged on the inside of the door leaf.

9. Sectional door according to one of the preceding claims, characterized in that the door leaf (10) is guided along its predetermined path by guide arrangements (60) arranged on the door leaf (10) and cooperating with the guide rail arrangement (20).

10. Sectional door according to claim 9, characterized in that the guide arrangements (60) have rollers (62).

11. Sectional door according to one of claims 9 or 10, characterized in that the guide arrangements (60) are arranged in the area of the hinges (52) on the upper edge (12a, 14a, 16a) of a door leaf element (12, 14, 16).

12. Sectional door according to one of claims 1 or 12, characterized in that the hinges are designed as hinge roller holders holding the rollers.

13. Sectional door according to one of claims 10 to 12, 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 connecting line DA Roller axis (A) with the hinge pivot point (D) on a straight line running orthogonally to the door leaf element (12, 1, 16) having the roller (62) has a length d _S A and the bend section (42) starts from the horizontal section (44) at least (d _DA - d _S A)max falls downwards, where d _DA is a length of the connecting line DA, where (d _DA - d _S A)max is the maximum difference for the door leaf of a door leaf according to the invention, taking into account the variations in the roller attachment sectional door.

14. Guide rail arrangement for a sectional door (1) according to one of the preceding claims.