Sectional door

Abstract

A sectional door for reversibly closing and opening a door opening, comprising: a first section element (14), a second section element (14') and a third section element (14"), wherein, when the sectional door (1) is closed, the first section element (14) is connected to the second section element (14') and the second section element (14') is connected to the third section element (14"), and the section elements (14, 14', 14") are displaceable at least partly in an opening direction, and wherein the second section element (14') comprises a separating device (22') for detaching the connection between the first section element (14) and the second section element (14'), and the third section element (14") comprises a separating device (22") for detaching the connection between the second section element (14') and the third section element (14'), and the separating device (22') of the second section element (14') can be actuated by the separating device (22") of the third section element (14").

Description

[0001] Sectional door

[0002] Description

[0003] The invention relates to a sectional door for closing a wall opening.

[0004] Sectional doors feature plate-shaped section elements that are guided in guide rails. When the sectional door is closed, the section elements are arranged one above the other and are connected to one another, for example, via a tongue and groove system. The sectional door is opened or the individual section elements are raised using a cable that is usually attached to the lowest section element. When the sectional door is opened, the section elements are pushed upwards in the guide rails and enter one after the other into a storage area that is arranged laterally offset from the wall opening. For this purpose, the individual section elements are separated from one another by a separating device.

[0005] Such a sectional door with several section elements guided in a guide rail is known from EP 2 047 054 A1, wherein two section elements can be separated from each other by a separating device. The separating device comprises a force transmission plate pivotally attached to the section element, at the end of which a force transmission roller is arranged. Before a section element enters the storage area, the force transmission roller engages a force introduction track formed on a separate sheet metal element. By moving the force transmission roller in the force introduction track, the force transmission plate is pivoted and the separating device is actuated. This solution has the disadvantage that a high degree of accuracy is required for the assembly and positioning of the sheet metal element relative to the guide rail.If the assembly tolerances are not adhered to or if the sheet metal part is worn, the separating device may become blocked or the travel speed may have to be reduced.

[0006] Based on this, the object of the present invention is to provide a sectional door that enables a secure separation of the section elements by means of a separating device in order to enable high travel speeds of the sectional door.

[0007] To achieve the object, a sectional door for reversibly closing and opening a door opening is proposed, comprising: a first section element, a second section element and a third section element, wherein in the closed state of the sectional door the first section element is connected to the second section element and the second section element is connected to the third section element, and the section elements are arranged to be displaceable at least in sections in an opening direction, and wherein the second section element comprises a separating device for separating the connection between the first section element and the second section element, and the third section element comprises a separating device for separating the connection between the second section element and the third section element, and wherein the separating device of the second section element can be actuated by the separating device of the third section element.

[0008] In one possible embodiment, the first section element can comprise a belt drive with a first belt. Alternatively or in combination, the separating device of the second section element can comprise a belt drive with a second belt. Furthermore, the separating device of the third section element can comprise a belt drive with a third belt. To actuate the separating device of the second section element, the second belt can be tensioned by the third belt.

[0009] The separating device of the second section element can comprise a pivot arm with a first actuator roller at a first end and with a second actuator roller at a second end. The first actuator roller can protrude beyond the first end of the pivot arm. The second actuator roller can protrude beyond the second end of the pivot arm. The pivot arm can be mounted on an end face of the second section element so as to be pivotable about a pivot axis. The separating device of the second section element can comprise a deflection roller that is mounted on the end face of the second section element so as to be rotatable about a rotation axis. The second belt can surround or wrap around the first actuator roller, the second actuator roller, and the deflection roller.

[0010] In another possible embodiment, the first section element can have a panel. The second section element can comprise a panel. In a non-actuated state of the separating device of the second section element, the panel of the first section element can be connected to the panel of the second section element. In an actuated state of the separating device of the second section element, the panel of the first section element can be separated from the panel of the second section element and spaced apart in the opening direction.

[0011] In the non-actuated state of the separating device of the second section element, the pivot arm can be arranged transversely to the opening direction. The second belt can wrap around the first actuator roller, the second actuator roller, and the deflection roller in a substantially triangular configuration. The corners of the triangle can be rounded.

[0012] In the actuated state of the separating device of the second section element, the pivot arm can be arranged parallel to the opening direction. The second belt can wrap around the first actuator roller and the deflection roller in a substantially rectangular pattern. The rectangle can be bounded by two parallel sides and two rounded sides.

[0013] The wrap length of the second belt may be the same in the actuated state and the non-actuated state of the separating device of the second section element.

[0014] The first actuator roller can be supported on the first section element by the actuation of the separating device of the second section element in such a way that, compared to the non-actuated state, the panel of the second section element is raised from the panel of the first section element by a stroke.

[0015] The panels of the first section element can comprise a tongue section. The panels of the second section element can comprise a groove section. In the non-actuated state of the separating device of the second section element, the tongue section can engage in the groove section. The stroke can be selected to be large enough that, in the actuated state of the separating device of the second section element, the tongue section is arranged at least partially outside the groove section, in particular completely outside the groove section.

[0016] A first guide roller and a second guide roller can be arranged on the end face of the second section element, each of which can be guided in a guide arrangement. The guide arrangement can extend parallel to the opening direction in a first section. The first guide roller can be arranged coaxially with the pivot axis of the pivot arm of the second section element. The second guide roller can be arranged coaxially with the deflection roller of the second section element.

[0017] An offset roller, which can be guided in an offset rail, can be arranged on the end face of the second section element. The offset rail can comprise an arcuate section that runs transversely to the opening direction. The offset roller (30') can be arranged coaxially with the first guide roller.

[0018] The separating device of the third section element can comprise a pivot arm with a first actuator roller at a first end and a second actuator roller at a second end. The first actuator roller can protrude beyond the first end of the pivot arm. The second actuator roller can protrude beyond the second end of the pivot arm. The pivot arm can be mounted on an end face of the third section element so as to be pivotable about a pivot axis. The separating device of the third section element can have a deflection roller that is mounted on the end face of the third section element so as to be rotatable about a rotation axis. The third belt can surround or wrap around the first actuator roller, the second actuator roller, and the deflection roller.In the actuated state of the separating device of the second section element, the belt of the separating device of the second section element can be supported on the first actuator roller of the separating device of the third section element.

[0019] The separating device of the first section element can comprise a roller for guiding the first belt, which is mounted on an end face of the first section element so as to be rotatable about a rotation axis. In the actuated state of the separating device of the second section element, the first actuator roller of the second section element can be supported on the roller of the first section element.

[0020] The first belt, the second belt, and / or the third belt can each be configured as a double-sided toothed belt or as a smooth belt. The separating device of the second section element can comprise a brake arrangement that engages and locks the second belt when the separating device of the second section element is actuated.

[0021] Possible embodiments are explained below using the figures. Herein:

[0022] Figure 1 is a perspective view of a sectional door in a first embodiment according to the invention;

[0023] Figure 2 is a side view of the sectional door from Figure 1;

[0024] Figure 3 is a perspective view of the first and second section elements of the sectional door of Figure 1 in a connected state;

[0025] Figure 4 is a side view of the arrangement of Figure 3;

[0026] Figure 5 is a front view of the arrangement of Figure 3;

[0027] Figure 6 is a perspective view of the first, second and third section elements of the sectional door of Figure 1, wherein the first and second section elements are shown in a separated state and the third section element is arranged in the storage area;

[0028] Figure 7 is a side view of the arrangement of Figure 6;

[0029] Figure 8 is a front view of the arrangement of Figure 6;

[0030] Figure 9 is a perspective view of a sectional door in a second embodiment according to the invention; and

[0031] Figure 10 is a perspective view of the first, second and third section elements of the sectional door of Figure 9, wherein the first and second section elements are shown in a separated state and the third section element is arranged in the storage area;

[0032] Figures 1 to 8, which are described together below, show a first embodiment of a sectional door 1 according to the invention with a plurality of section elements 14. The sectional door 1 can optionally close or open a wall opening. When the sectional door 1 is closed, the section elements 14 are arranged one above the other, essentially in a door plane. The door plane is oriented vertically in particular and is defined specifically by the wall opening. From this arrangement, the section elements 14 can be transferred into a storage area that is arranged laterally offset from the door plane. In this storage area, the section elements 14 are arranged next to one another in a direction transverse to, in particular orthogonal to, the door plane.

[0033] The sectional door 1 comprises a first section element 14, a second section element 14', and a third section element 14". The figures show that one or more additional section elements are provided depending on the height of the wall opening. The section elements 14, 14', 14" are guided in sections by a guide arrangement in a direction parallel to the door plane, which, away from a floor of the sectional door 1, can also be referred to as the opening direction. In order to open the wall opening or the sectional door 1, a cable (not shown), which can also be referred to as a drive belt, is connected to the lowest section element. The effective length of the cable can be reversibly shortened by a drive arrangement, so that the lowest section element displaces the other section elements in the opening direction along the guide arrangement.If the effective length of the rope is extended again by the drive arrangement, the section elements move in the guide arrangement following the force of gravity against the opening direction.

[0034] The section elements 14, 14', 14" of the sectional door 1 are identically designed. Therefore, the structure of the section elements 14, 14', 14" will be explained below using the first section element 14 as an example. What has been said with regard to the first section element 14 therefore applies analogously to the second section element 14' and the third section element 14'. Elements of the second section element 14' and the third section element 14" that are identical to elements of the first section element 14 are identified below with the same reference numerals, with elements of the second section element 14' additionally identified with one prime and elements of the third section element 14" with two primes.

[0035] The first section element 14 has a plate section, which can also be referred to as a panel 15. The panel 15 is essentially flat and, when the sectional door 1 is closed, is arranged parallel to the door plane.

[0036] The panel 15 has a first contact side 16, which, when the sectional door 1 is closed, is in contact with the sectional element arranged above it. In the present case, the first sectional element 14 is in contact with the second sectional element 14' on the first contact side 16. The first sectional element 14 has connecting means in the form of a spring section 17 on the first contact side 16, which, when the sectional door 1 is closed, engages with a groove section 19' of the sectional element arranged above it or the second sectional element 14'. The groove section 19' is formed on a second contact side 18' of the second sectional element 14'. It is understood that the first sectional element also has a groove section 19' on a second contact side 18. The panel 15 also has a first end face 20 and a second end face 21 facing away from the first end face.The first end face 20 and the second end face 21 extend substantially orthogonally to the gate plane and parallel to the opening direction.

[0037] The first section element 14 has a first guide roller 28 on the first end face 20, which is mounted on the panel 15 for rotation about the axis of rotation L28. The first section element 14 has a second guide roller 29 on the first end face 20, which is mounted on the panel 15 for rotation about the axis of rotation L29. The first section element 14 has an offset roller 30 on the first end face 20, which is mounted on the panel 15 for rotation about the axis of rotation L30. The axis of rotation L28 of the first guide roller 28 and the axis of rotation L30 of the offset roller 30 are arranged coaxially to one another. The first guide roller 28 and the offset roller 30 are mounted such that they can rotate independently of one another about their respective axes of rotation.

[0038] The first section element 14 has a separating device 22 on the first end face 20, which is designed to separate the first section element 14 from the section element arranged underneath it when the sectional door 1 is closed. The separating device 22 comprises an endless belt 23 that runs over a first actuator roller 25, a second actuator roller 26, and a deflection roller 27. The belt 23 is designed as a smooth belt and has a width. The first actuator roller 25 and the second actuator roller 26 are identically designed in this case and, in particular, have the same diameter. The deflection roller 27 can also be identically designed to the first actuator roller 25 and the second actuator roller 26. The width of the belt is selected such that the belts of two adjacent section elements are arranged to overlap one another in all operating states.

[0039] The first actuator roller 25 is rotatably mounted on a first end of a pivot arm 24. The first actuator roller 25 is mounted on the first end of the pivot arm 24 such that the first actuator roller 25 projects beyond the first end of the pivot arm 24 in the longitudinal direction of the pivot arm 24. The second actuator roller 26 is rotatably mounted on a second end of the pivot arm 24. The second actuator roller 26 is mounted on the second end of the pivot arm 24 such that the second actuator roller 26 projects beyond the second end of the pivot arm 24 in the longitudinal direction of the pivot arm 24. The pivot arm 24 is pivotally mounted on the panel 15 about a pivot axis that is arranged coaxially to the rotational axis L28 of the first guide roller 28 and / or the rotational axis L30 of the offset roller 30. The rotation axes of the first actuator roller 25 and the second actuator roller 26 are at the same distance from the pivot axis.In other words, the first actuator roller 25 and the second actuator roller 26 are mounted on a common circular path around the pivot axis.

[0040] The belt 23, the first actuator roller 25, the second actuator roller 26 and the deflection roller 27 are arranged in a belt plane E_R which is transverse, in particular orthogonal, to the gate plane.

[0041] When the sectional door 1 is closed, as shown, for example, in Figure 4, the pivot arm 24 is pivoted such that the pivot arm 24 is arranged transversely to the door plane. In other words, when the sectional door 1 is closed, the pivot arm 24 is pivoted such that the pivot arm 24 is arranged transversely to the panels 15. Thus, when the sectional door 1 is closed, the first actuator roller 25 is arranged on an inner side of the panels 15, while the second actuator roller 26 is arranged on an outer side of the panels 15. When the sectional door 1 is closed, the belt 23 wraps around the first actuator roller 25, the second actuator roller 26, and the deflection roller 27 essentially in a triangular shape.

[0042] In the closed state of the sectional door 1, the deflection roller 27 of the first section element 14 holds the first actuator roller 25' of the overlying second section element 14' in position. This establishes the triangular path of the belt 23' of the separating device 22 of the second section element 14'. For this purpose, the first actuator roller 25' is in indirect contact with the deflection roller 27 via the belt 23' and the belt 23. The first actuator roller 25' is also arranged axially offset from the deflection roller 27 in the opening direction, with the first actuator roller 25' and deflection roller 27 overlapping in a direction transverse to the opening direction. The guide arrangement comprises an inner rail element with an inner guide rail 2, an outer rail element with an outer guide rail 6, and an offset rail element with an offset rail 10.

[0043] The inner guide rail 2 has a linear section 3, which is designed as a straight rail section and arranged parallel to the door plane. At the transition S_4, the linear section 3 is adjoined by a curved section 4, which is designed as a curved rail section and runs away from the door plane in the opening direction. The curved section 4 transitions into a storage section 5, which is designed as a straight rail section and is arranged transversely, in particular orthogonally, to the door plane.

[0044] The outer guide rail 6 has a linear section 7, which is designed as a straight rail section and arranged parallel to the door plane. Adjoining the linear section 7 at the transition S_8 is a curved section 8, which is designed as a curved rail section and runs away from the door plane in the opening direction. The curved section 8 transitions into a storage section 9, which is designed as a straight rail section and is arranged transversely, in particular orthogonally, to the door plane.

[0045] The linear section 3 of the inner guide rail 2 and the linear section 7 of the outer guide rail 6 are arranged parallel to one another. The linear section 3 of the inner guide rail 2 is shorter than the linear section 7 of the outer guide rail 6. The linear section 7 of the outer guide rail 6 protrudes beyond the linear section 3 of the inner guide rail 2 in the opening direction. The area in which the linear section 3 of the inner guide rail 2 and the linear section 7 of the outer guide rail 6 overlap serves to jointly guide a first guide roller 28 and a second guide roller 29 of the section elements 14, 14', 14".

[0046] The area of ​​the linear section 7 of the outer guide rail 6 that extends beyond the linear section 3 of the inner guide rail 2 serves to guide the second guide roller 29 when the first guide roller 28 is lifted from the outer guide rail 6, as explained further below. The curved section 8 adjoins the linear section 7 of the outer guide rail 6 at the transition S_8. The curved section 8 of the outer guide rail 6 is bent concurrently with the curved section 4 of the inner guide rail 2.

[0047] The offset rail 10 has an inlet section 11, which is designed as a curved rail section. The inlet section 11 is arranged such that it increasingly approaches the inner guide rail 2 in the opening direction. The inlet section 11 is followed by a curved section 12, which is designed as a curved rail section and runs away from the door plane. The curved section 12 of the offset rail 10 is bent in the same direction as the curved section 4 of the inner guide rail 2. Thus, an offset channel is formed between the curved section 4 of the inner guide rail 2 and the curved section 12 of the offset rail 10, in which the offset roller 30 can be guided. The curved section 12 of the offset rail 10 is bent in the same direction as the curved section 8 of the outer guide rail 6.

[0048] In the opening direction, the beginning S_4 of the curved section 4 of the inner guide rail 2 and the beginning S_12 of the curved section 12 of the offset rail 10 are at the same height. However, it is also conceivable that the beginning S_4 of the curved section 4 of the inner guide rail 2 is lower in the opening direction than the beginning S_12 of the curved section 12 of the offset rail 10.

[0049] The inner guide rail 2 and the outer guide rail 6 are arranged in a guide plane E_F, which is transverse, in particular orthogonal, to the door plane. The guide rollers 28, 29 of the respective section elements 14, 14', 14" are also arranged in this guide plane E_F. The offset rail 10 is arranged in an offset plane E_V, which is transverse, in particular orthogonal, to the door plane. The offset roller 30 of the respective section elements 14, 14', 14" is also arranged in this offset plane E_V. The guide plane E_F and the offset plane E_V are arranged parallel to each other at a distance. In the present case, the guide plane E_F is arranged between the offset plane E_V and a panel of the respective section element 14, 14', 14". However, it is also conceivable that the offset plane E_V is arranged between the guide plane E_F and the panel of the respective section element 14, 14', 14".In the present case, the belt plane E_R is arranged between the offset plane E_V or the guide plane E_F and a panel of the respective section element 14, 14', 14". It is understood that the belt plane E_R can also be arranged between the offset plane E_V and the guide plane E_F or on the side of the offset plane E_V and the guide plane E_F facing away from the panel 15.

[0050] Starting from the closed state of the sectional door 1, the functioning of the separating device is explained below using the example of the separation of the first section element 14 and the second section element 14'.

[0051] The second section element 14' is initially moved in the opening direction, with the first guide roller 28' and the second guide roller 29' being guided by the guide arrangement in the region of the linear section 3 of the inner guide rail 2 and the linear section 7 of the outer guide rail 6. During this movement, the third section element 14" is first separated from the second section element 14' and arranged laterally offset from the door level in the storage area. Thus, the second section element 14" can be guided past the third section element 14" in the door level.

[0052] The third section element 14" is subjected to force by a pressure plate 13 in a direction transverse to the opening direction toward the outer guide rail 6. The third section element 14" and the second section element 14' are thus held in contact with one another. The belt 23" of the third section element 14" and the belt 23' of the second section element 14' thus bear against one another. The belt 23' is pressed toward the panels 15' by the separating device 22" of the third section element 14" or by the belt 23", respectively. In particular, the force is exerted on the belt 23' by the first actuator roller 15" of the separating device 22" of the third section element 14". Due to the tension induced in the belt 23', the pivot arm 24' of the second section element 14' is pivoted until it is aligned parallel to the panel 15'.

[0053] By pivoting the pivot arm 24' of the second section element 14', the first actuator roller 25' is transferred into the gate plane and presses itself against the deflection roller 27 of the first separating device 22 of the first section element 14 via the belt 23' and the belt 23. As a result, the second section element 14 is lifted from the first section element 14 by the stroke H. The spring section 17 of the first section element 14 protrudes from the groove section 19' of the second section element 14', allowing an offset between the first section element 14 and the second section element 14.

[0054] If the second section element 14' is moved further in the opening direction, the offset roller 30' engages with the curved section 12 of the offset rail 10. The second guide roller 29' engages with the curved section 8 of the outer guide rail 6. The second section element 14' is then offset transversely to the door plane. The first guide roller 28' lifts off the outer guide rail 6 and is guided in the offset channel.

[0055] The opening characteristics of the separating device can be varied by selecting the ratio of distance D_R between the rotational axis L30 of the offset roller 30 and the rotational axis L29 of the second guide roller 29, as well as the distance D_S between the transition S_8 of the outer guide rail 6 and the transition S_12 of the offset rail 10. The respective distances can be determined in the opening direction. If the distance D_R is equal to the distance D_S, the panel 15 remains essentially parallel to the door plane during the offset towards the storage area. If the distance D_R is greater than the distance D_S, the upper end of the panel is pivoted away from the door plane upon contact of the second guide roller 29 with the curved section 8, which leads to a temporary reduction in the force acting on the belt 23.If the distance D_S is greater than the distance D_R, the lower end of the panels 15 is pivoted away from the gate plane upon contact of the offset roller 30 with the curved section 12, which leads to a faster increase in the force acting on the belt 23.

[0056] After the second section element 14' enters the storage area, the first guide roller 28' is arranged on the storage section 5 of the inner guide rail 2 and the second guide roller 29' is in contact with the storage section 9 of the outer guide rail 6. In the present case, the storage section 5 of the inner guide rail 2 is arranged orthogonally to the gate plane or to the linear section 3. The storage section 9 of the outer guide rail 6 is arranged orthogonally to the gate plane or to the linear section 7. It is also conceivable that the storage section 5 of the inner guide rail 2 is arranged at an acute angle to the gate plane or to the linear section 3. The storage section 9 of the outer guide rail 6 can be arranged at the same acute angle to the gate plane or to the linear section 7.In this case, the weight force of the section elements arranged in the storage area acts in the direction of the pressure plate 13, so that in case of failure of the drive belt and the pressure plate 13, the corresponding section elements cannot accidentally fall back into the gate plane.

[0057] Figures 9 and 10, which are described together below, show a second embodiment of a sectional door 1 according to the invention with several identical section elements 14. This differs from the embodiment shown in Figures 1 to 8 in that the belt 23 of the section elements 14 is designed as a belt with teeth on both sides. The first actuator roller 25, the second actuator roller 26, and the deflection roller 27 are correspondingly also toothed.

[0058] During the movement of the section element 14 in the opening direction, it is guided past a section element arranged offset in the storage area, with the toothed outer sides of the two contacting belts interlocking. The belt 23 of the section element 14 rotates around the first actuator roller 25, the second actuator roller 26, and the deflection roller 27 during the movement in the opening direction.

[0059] Furthermore, the separating device 22 comprises a brake arrangement with a brake element 31 spring-mounted on the pivot arm. As long as the movement of the section element 14 in the opening direction is not completely completed and, for example, the second guide roller 29 is not in contact with the storage section 9 of the outer guide rail 6, the brake element 31 is outside the effective range of the belt 23, so that the belt 23 can continue to run around the first actuator roller 25, the second actuator roller 26 and the deflection roller 27.

[0060] The braking element 31 engages the inside of the belt 23 when the section element 14 has completely completed its movement in the opening direction and, for example, the second guide roller 29 is in contact with the storage section 9 of the outer guide rail 6 and the pivot arm 24 is aligned parallel to the panel 15. This prevents the belt 23 from rotating around the first actuator roller 25, the second actuator roller 26, and the deflection roller 27.

[0061] The section elements arranged in the storage area are clamped between the pressure plate 13 and the drive belt and support each other. This eliminates the need for the storage section 5 of the inner guide rail 2. This reduces the assembly accuracy requirements, particularly between the inner guide rail 2 and the outer guide rail 6.

[0062] In Figures 1 to 10, the elements for guiding the sectional door and for actuating the separating devices are each formed on only one end face. It is understood that these elements can also be formed on both ends, so that the sectional door is symmetrical with respect to a mirror plane.

[0063] List of reference symbols

[0064] 1 sectional door

[0065] 2 guide rails

[0066] 3 Linear section

[0067] 4 arch section

[0068] 5 Storage section

[0069] 6 Guide rail

[0070] 7 Linear section

[0071] 8 arch section

[0072] 9 Storage section

[0073] 10 offset rail

[0074] 11 Inlet section

[0075] 12 arch sections

[0076] 13 Printing plate

[0077] 14 Section element

[0078] 15 panels

[0079] 16 Contact page

[0080] 17 spring section

[0081] 18 Contact page

[0082] 19 Groove section

[0083] 20 front side

[0084] 21 Front side

[0085] 22 Separation device

[0086] 23 belts

[0087] 24 swivel arm

[0088] 25 Actuator roller

[0089] 26 Actuator roller

[0090] 27 Deflection pulley 28 Guide pulley

[0091] 29 Leadership role

[0092] 30 offset roller

[0093] B Belt width

[0094] D_R Distance guide rollers

[0095] D_S Distance guide rails

[0096] H stroke

Claims

Claims 1. Sectional door for the reversible closing and opening of a door opening, comprising: a first section element (14), a second section element (14') and a third section element (14"), wherein in the closed state of the sectional door (1), the first section element (14) is connected to the second section element (14') and the second section element (14') is connected to the third section element (14"), and the section elements (14, 14', 14") are arranged to be displaceable at least in sections in an opening direction, and wherein the second section element (14') comprises a separating device (22') for separating the connection between the first section element (14) and the second section element (14'), and the third section element (14") comprises a separating device (22") for separating the connection between the second section element (14') and the third section element (14'), characterized marked,that the separating device (22') of the second section element (14') can be actuated by the separating device (22") of the third section element (14")., 2. Sectional door according to claim 1, characterized in that the first section element (14) comprises a belt drive with a first belt (23), and / or that the separating device (22') of the second section element (14') comprises a belt drive with a second belt (23'), and / or that the separating device (22") of the third section element (14") comprises a belt drive with a third belt (23"), wherein for actuating the separating device (22') of the second section element (14') the second belt (23') is tensioned by the third belt (23").

3. Sectional door according to claim 2, characterized in that the separating device (22') of the second sectional element (14') comprises a pivot arm (24') with a first actuator roller (25') at a first end and with a second actuator roller (26') at a second end, wherein the pivot arm (24') is mounted on an end face (20') of the second sectional element (14') so as to be pivotable about a pivot axis, and a deflection roller (27') which is mounted on the end face (20') of the second sectional element (14') so as to be rotatable about a rotation axis, wherein the second belt (23') surrounds the first actuator roller (25'), the second actuator roller (26") and the deflection roller (27).

4. Sectional door according to one of claims 1 to 3, characterized in that the first section element (14) comprises a panel (15) and the second section element (14') comprises a panel (15'), and that in a non-actuated state of the separating device (22') of the second section element (14'), the panel (15) of the first section element (14) is connected to the panel (15') of the second section element (14'), and that in an actuated state of the separating device (22') of the second section element (14'), the panel (15) of the first section element (14) is separated from the panel (15') of the second section element (14') and is spaced apart in the opening direction.

5. Sectional door according to claim 4, characterized in that in the non-actuated state of the separating device (22') of the second sectional element (14'), the pivot arm (24') is arranged transversely to the opening direction, wherein the second belt (23') wraps around the first actuator roller (25'), the second actuator roller (26") and the deflection roller (27), in particular in a substantially triangular course.

6. Sectional door according to one of claims 4 or 5, characterized in that in the actuated state of the separating device (22') of the second sectional element (14') the pivot arm (24') is arranged parallel to the opening direction, wherein the second belt (23') wraps around the first actuator roller (25') and the deflection roller (27), in particular in a substantially rectangular course.

7. Sectional door according to one of claims 4 to 6, characterized in that the wrap length of the second belt (15') is the same in the actuated state and the non-actuated state of the separating device (22') of the second sectional element (14').

8. Sectional door according to one of claims 4 to 7, characterized in that the first actuator roller (25') is supported on the first section element (14) by the actuation of the separating device (22') of the second section element (14') in such a way that, compared to the non-actuated state, the panel (15') of the second section element (14') is lifted by a stroke (H) from the panel (15) of the first section element (14).

9. Sectional door according to claim 8, characterized in that the panel (15) of the first section element (14) comprises a tongue section (17), and that the panel (15') of the second section element (14') comprises a groove section (19'), wherein in the non-actuated state of the separating device (22') of the second section element (14') the tongue section (17) engages in the groove section (19'), and that the stroke (H) is so large that in the actuated state of the separating device (22') of the second section element (14') the tongue section (17) is arranged outside the groove section (19'), in particular completely outside the groove section (19').

10. Sectional door according to one of claims 3 to 9, characterized in that a first guide roller (28') and a second guide roller (29') are arranged on the end face (20') of the second section element (14'), each of which can be guided in a guide arrangement (2, 6) which extends in a first section (3, 7) parallel to the opening direction, and in that the first guide roller (28') is arranged coaxially to the pivot axis of the pivot arm (24') of the second section element (14'), and in that the second guide roller (29') is arranged coaxially to the deflection roller (27') of the second section element (14').

11. Sectional door according to one of claims 3 to 10, characterized in that an offset roller (30') is arranged on the end face (20') of the second sectional element (14'), which can be guided in an offset rail (10) which comprises an arcuate section (12) which runs transversely to the opening direction, and in that the offset roller (30') is arranged in particular coaxially to the first guide roller (28').

12. Sectional door according to one of claims 2 to 11, characterized in that the separating device (22") of the third section element (14") comprises a pivot arm (24") with a first actuator roller (25") at a first end and with a second actuator roller (26") at a second end, wherein the pivot arm (24") is mounted on an end face (20") of the third section element (14") so as to be pivotable about a pivot axis, and a deflection pulley (27") which is mounted on the end face (20") of the third section element (14") so as to be rotatable about an axis of rotation, wherein the third belt (23") surrounds the first actuator pulley (25"), the second actuator pulley (26") and the deflection pulley (27").

13. Sectional door according to claim 12, characterized in that in the actuated state of the separating device (22') of the second section element (14'), the second belt (23') of the separating device (22') of the second section element (14') is supported on the first actuator roller (25") of the separating device (22") of the third section element (14").

14. Sectional door according to one of claims 2 to 13, characterized in that the separating device (22) of the first section element (14) comprises a roller (27) for guiding the first belt (23), which roller is mounted on an end face (20) of the first section element (14) so ​​as to be rotatable about an axis of rotation, wherein in the actuated state of the separating device (22') of the second section element (14'), the first actuator roller (28') of the second section element (14') is supported on the roller (27).

15. Sectional door according to one of claims 1 to 13, characterized in that the first belt (23) and / or the second belt (23') and / or the third belt (23") are designed as a toothed belt on both sides, wherein the separating device (22') of the second section element (14') comprises a brake arrangement which, in the actuated state of the separating device (22') of the second section element (14'), engages in the second belt (23') and fixes it.

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